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Merge branch 'for-4.20/google' into for-linus 

Whisker device specific fixes to hid-google driver
This commit is contained in:
Jiri Kosina 2018-10-23 13:19:54 +02:00
parent d19031d32c 23e542e5ba
commit a600ffe6ec
741 changed files with 7611 additions and 4071 deletions
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9
Documentation/ABI/stable/sysfs-devices-system-xen_memory
View File

@ -75,3 +75,12 @@ Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
Amount (in KiB) of low (or normal) memory in the
balloon.
What: /sys/devices/system/xen_memory/xen_memory0/scrub_pages
Date: September 2018
KernelVersion: 4.20
Contact: xen-devel@lists.xenproject.org
Description:
Control scrubbing pages before returning them to Xen for others domains
use. Can be set with xen_scrub_pages cmdline
parameter. Default value controlled with CONFIG_XEN_SCRUB_PAGES_DEFAULT.

6
Documentation/admin-guide/kernel-parameters.txt
View File

@ -5000,6 +5000,12 @@
Disables the PV optimizations forcing the HVM guest to
run as generic HVM guest with no PV drivers.
xen_scrub_pages= [XEN]
Boolean option to control scrubbing pages before giving them back
to Xen, for use by other domains. Can be also changed at runtime
with /sys/devices/system/xen_memory/xen_memory0/scrub_pages.
Default value controlled with CONFIG_XEN_SCRUB_PAGES_DEFAULT.
xirc2ps_cs= [NET,PCMCIA]
Format:
<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]

4
Documentation/device-mapper/dm-raid.txt
View File

@ -348,3 +348,7 @@ Version History
1.13.1 Fix deadlock caused by early md_stop_writes(). Also fix size an
state races.
1.13.2 Fix raid redundancy validation and avoid keeping raid set frozen
1.14.0 Fix reshape race on small devices. Fix stripe adding reshape
deadlock/potential data corruption. Update superblock when
specific devices are requested via rebuild. Fix RAID leg
rebuild errors.

2
Documentation/devicetree/bindings/input/gpio-keys.txt
View File

@ -1,4 +1,4 @@
Device-Tree bindings for input/gpio_keys.c keyboard driver
Device-Tree bindings for input/keyboard/gpio_keys.c keyboard driver
Required properties:
- compatible = "gpio-keys";

1
Documentation/devicetree/bindings/net/macb.txt
View File

@ -10,6 +10,7 @@ Required properties:
Use "cdns,pc302-gem" for Picochip picoXcell pc302 and later devices based on
the Cadence GEM, or the generic form: "cdns,gem".
Use "atmel,sama5d2-gem" for the GEM IP (10/100) available on Atmel sama5d2 SoCs.
Use "atmel,sama5d3-macb" for the 10/100Mbit IP available on Atmel sama5d3 SoCs.
Use "atmel,sama5d3-gem" for the Gigabit IP available on Atmel sama5d3 SoCs.
Use "atmel,sama5d4-gem" for the GEM IP (10/100) available on Atmel sama5d4 SoCs.
Use "cdns,zynq-gem" Xilinx Zynq-7xxx SoC.

5
Documentation/fb/uvesafb.txt
View File

@ -15,7 +15,8 @@ than x86. Check the v86d documentation for a list of currently supported
arches.
v86d source code can be downloaded from the following website:
http://dev.gentoo.org/~spock/projects/uvesafb
https://github.com/mjanusz/v86d
Please refer to the v86d documentation for detailed configuration and
installation instructions.
@ -177,7 +178,7 @@ from the Video BIOS if you set pixclock to 0 in fb_var_screeninfo.
--
Michal Januszewski <spock@gentoo.org>
Last updated: 2009-03-30
Last updated: 2017-10-10
Documentation of the uvesafb options is loosely based on vesafb.txt.

21
Documentation/filesystems/vfs.txt
View File

@ -848,7 +848,7 @@ struct file_operations
----------------------
This describes how the VFS can manipulate an open file. As of kernel
4.1, the following members are defined:
4.18, the following members are defined:
struct file_operations {
struct module *owner;
@ -858,11 +858,11 @@ struct file_operations {
ssize_t (*read_iter) (struct kiocb *, struct iov_iter *);
ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);
int (*iterate) (struct file *, struct dir_context *);
int (*iterate_shared) (struct file *, struct dir_context *);
__poll_t (*poll) (struct file *, struct poll_table_struct *);
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
int (*mremap)(struct file *, struct vm_area_struct *);
int (*open) (struct inode *, struct file *);
int (*flush) (struct file *, fl_owner_t id);
int (*release) (struct inode *, struct file *);
@ -882,6 +882,10 @@ struct file_operations {
#ifndef CONFIG_MMU
unsigned (*mmap_capabilities)(struct file *);
#endif
ssize_t (*copy_file_range)(struct file *, loff_t, struct file *, loff_t, size_t, unsigned int);
int (*clone_file_range)(struct file *, loff_t, struct file *, loff_t, u64);
int (*dedupe_file_range)(struct file *, loff_t, struct file *, loff_t, u64);
int (*fadvise)(struct file *, loff_t, loff_t, int);
};
Again, all methods are called without any locks being held, unless
@ -899,6 +903,9 @@ otherwise noted.
iterate: called when the VFS needs to read the directory contents
iterate_shared: called when the VFS needs to read the directory contents
when filesystem supports concurrent dir iterators
poll: called by the VFS when a process wants to check if there is
activity on this file and (optionally) go to sleep until there
is activity. Called by the select(2) and poll(2) system calls
@ -951,6 +958,16 @@ otherwise noted.
fallocate: called by the VFS to preallocate blocks or punch a hole.
copy_file_range: called by the copy_file_range(2) system call.
clone_file_range: called by the ioctl(2) system call for FICLONERANGE and
FICLONE commands.
dedupe_file_range: called by the ioctl(2) system call for FIDEDUPERANGE
command.
fadvise: possibly called by the fadvise64() system call.
Note that the file operations are implemented by the specific
filesystem in which the inode resides. When opening a device node
(character or block special) most filesystems will call special

1
Documentation/media/uapi/dvb/video_function_calls.rst
View File

@ -33,4 +33,3 @@ Video Function Calls
video-clear-buffer
video-set-streamtype
video-set-format
video-set-attributes

81
Documentation/process/code-of-conduct.rst Normal file
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@ -0,0 +1,81 @@
Contributor Covenant Code of Conduct
++++++++++++++++++++++++++++++++++++
Our Pledge
==========
In the interest of fostering an open and welcoming environment, we as
contributors and maintainers pledge to making participation in our project and
our community a harassment-free experience for everyone, regardless of age, body
size, disability, ethnicity, sex characteristics, gender identity and
expression, level of experience, education, socio-economic status, nationality,
personal appearance, race, religion, or sexual identity and orientation.
Our Standards
=============
Examples of behavior that contributes to creating a positive environment
include:
* Using welcoming and inclusive language
* Being respectful of differing viewpoints and experiences
* Gracefully accepting constructive criticism
* Focusing on what is best for the community
* Showing empathy towards other community members
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery and unwelcome sexual attention or
advances
* Trolling, insulting/derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others’ private information, such as a physical or electronic
address, without explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
Our Responsibilities
====================
Maintainers are responsible for clarifying the standards of acceptable behavior
and are expected to take appropriate and fair corrective action in response to
any instances of unacceptable behavior.
Maintainers have the right and responsibility to remove, edit, or reject
comments, commits, code, wiki edits, issues, and other contributions that are
not aligned to this Code of Conduct, or to ban temporarily or permanently any
contributor for other behaviors that they deem inappropriate, threatening,
offensive, or harmful.
Scope
=====
This Code of Conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community. Examples of
representing a project or community include using an official project e-mail
address, posting via an official social media account, or acting as an appointed
representative at an online or offline event. Representation of a project may be
further defined and clarified by project maintainers.
Enforcement
===========
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported by contacting the Technical Advisory Board (TAB) at
<tab@lists.linux-foundation.org>. All complaints will be reviewed and
investigated and will result in a response that is deemed necessary and
appropriate to the circumstances. The TAB is obligated to maintain
confidentiality with regard to the reporter of an incident. Further details of
specific enforcement policies may be posted separately.
Maintainers who do not follow or enforce the Code of Conduct in good faith may
face temporary or permanent repercussions as determined by other members of the
project’s leadership.
Attribution
===========
This Code of Conduct is adapted from the Contributor Covenant, version 1.4,
available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html

28
Documentation/process/code-of-conflict.rst
View File

@ -1,28 +0,0 @@
Code of Conflict
----------------
The Linux kernel development effort is a very personal process compared
to "traditional" ways of developing software. Your code and ideas
behind it will be carefully reviewed, often resulting in critique and
criticism. The review will almost always require improvements to the
code before it can be included in the kernel. Know that this happens
because everyone involved wants to see the best possible solution for
the overall success of Linux. This development process has been proven
to create the most robust operating system kernel ever, and we do not
want to do anything to cause the quality of submission and eventual
result to ever decrease.
If however, anyone feels personally abused, threatened, or otherwise
uncomfortable due to this process, that is not acceptable. If so,
please contact the Linux Foundation's Technical Advisory Board at
<tab@lists.linux-foundation.org>, or the individual members, and they
will work to resolve the issue to the best of their ability. For more
information on who is on the Technical Advisory Board and what their
role is, please see:
- http://www.linuxfoundation.org/projects/linux/tab
As a reviewer of code, please strive to keep things civil and focused on
the technical issues involved. We are all humans, and frustrations can
be high on both sides of the process. Try to keep in mind the immortal
words of Bill and Ted, "Be excellent to each other."

2
Documentation/process/index.rst
View File

@ -20,7 +20,7 @@ Below are the essential guides that every developer should read.
:maxdepth: 1
howto
code-of-conflict
code-of-conduct
development-process
submitting-patches
coding-style

12
Documentation/virtual/kvm/api.txt
View File

@ -4510,7 +4510,8 @@ Do not enable KVM_FEATURE_PV_UNHALT if you disable HLT exits.
Architectures: s390
Parameters: none
Returns: 0 on success, -EINVAL if hpage module parameter was not set
or cmma is enabled
or cmma is enabled, or the VM has the KVM_VM_S390_UCONTROL
flag set
With this capability the KVM support for memory backing with 1m pages
through hugetlbfs can be enabled for a VM. After the capability is
@ -4521,6 +4522,15 @@ hpage module parameter is not set to 1, -EINVAL is returned.
While it is generally possible to create a huge page backed VM without
this capability, the VM will not be able to run.
7.14 KVM_CAP_MSR_PLATFORM_INFO
Architectures: x86
Parameters: args[0] whether feature should be enabled or not
With this capability, a guest may read the MSR_PLATFORM_INFO MSR. Otherwise,
a #GP would be raised when the guest tries to access. Currently, this
capability does not enable write permissions of this MSR for the guest.
8. Other capabilities.
----------------------

25
Documentation/x86/earlyprintk.txt
View File

@ -35,25 +35,25 @@ and two USB cables, connected like this:
( If your system does not list a debug port capability then you probably
won't be able to use the USB debug key. )
b.) You also need a Netchip USB debug cable/key:
b.) You also need a NetChip USB debug cable/key:
http://www.plxtech.com/products/NET2000/NET20DC/default.asp
This is a small blue plastic connector with two USB connections,
This is a small blue plastic connector with two USB connections;
it draws power from its USB connections.
c.) You need a second client/console system with a high speed USB 2.0
port.
d.) The Netchip device must be plugged directly into the physical
d.) The NetChip device must be plugged directly into the physical
debug port on the "host/target" system. You cannot use a USB hub in
between the physical debug port and the "host/target" system.
The EHCI debug controller is bound to a specific physical USB
port and the Netchip device will only work as an early printk
port and the NetChip device will only work as an early printk
device in this port. The EHCI host controllers are electrically
wired such that the EHCI debug controller is hooked up to the
first physical and there is no way to change this via software.
first physical port and there is no way to change this via software.
You can find the physical port through experimentation by trying
each physical port on the system and rebooting. Or you can try
and use lsusb or look at the kernel info messages emitted by the
@ -65,9 +65,9 @@ and two USB cables, connected like this:
to the hardware vendor, because there is no reason not to wire
this port into one of the physically accessible ports.
e.) It is also important to note, that many versions of the Netchip
e.) It is also important to note, that many versions of the NetChip
device require the "client/console" system to be plugged into the
right and side of the device (with the product logo facing up and
right hand side of the device (with the product logo facing up and
readable left to right). The reason being is that the 5 volt
power supply is taken from only one side of the device and it
must be the side that does not get rebooted.
@ -81,13 +81,18 @@ and two USB cables, connected like this:
CONFIG_EARLY_PRINTK_DBGP=y
And you need to add the boot command line: "earlyprintk=dbgp".
(If you are using Grub, append it to the 'kernel' line in
/etc/grub.conf)
/etc/grub.conf. If you are using Grub2 on a BIOS firmware system,
append it to the 'linux' line in /boot/grub2/grub.cfg. If you are
using Grub2 on an EFI firmware system, append it to the 'linux'
or 'linuxefi' line in /boot/grub2/grub.cfg or
/boot/efi/EFI/<distro>/grub.cfg.)
On systems with more than one EHCI debug controller you must
specify the correct EHCI debug controller number. The ordering
comes from the PCI bus enumeration of the EHCI controllers. The
default with no number argument is "0" the first EHCI debug
default with no number argument is "0" or the first EHCI debug
controller. To use the second EHCI debug controller, you would
use the command line: "earlyprintk=dbgp1"
@ -111,7 +116,7 @@ and two USB cables, connected like this:
see the raw output.
c.) On Nvidia Southbridge based systems: the kernel will try to probe
and find out which port has debug device connected.
and find out which port has a debug device connected.
3. Testing that it works fine:

66
MAINTAINERS
View File

@ -1251,7 +1251,7 @@ N: meson
ARM/Annapurna Labs ALPINE ARCHITECTURE
M: Tsahee Zidenberg <tsahee@annapurnalabs.com>
M: Antoine Tenart <antoine.tenart@free-electrons.com>
M: Antoine Tenart <antoine.tenart@bootlin.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: arch/arm/mach-alpine/
@ -5625,6 +5625,8 @@ F: lib/fault-inject.c
FBTFT Framebuffer drivers
M: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
L: dri-devel@lists.freedesktop.org
L: linux-fbdev@vger.kernel.org
S: Maintained
F: drivers/staging/fbtft/
@ -6060,7 +6062,7 @@ F: Documentation/gcc-plugins.txt
GASKET DRIVER FRAMEWORK
M: Rob Springer <rspringer@google.com>
M: John Joseph <jnjoseph@google.com>
M: Todd Poynor <toddpoynor@google.com>
M: Ben Chan <benchan@chromium.org>
S: Maintained
F: drivers/staging/gasket/
@ -7016,6 +7018,20 @@ F: drivers/crypto/vmx/aes*
F: drivers/crypto/vmx/ghash*
F: drivers/crypto/vmx/ppc-xlate.pl
IBM Power PCI Hotplug Driver for RPA-compliant PPC64 platform
M: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
L: linux-pci@vger.kernel.org
L: linuxppc-dev@lists.ozlabs.org
S: Supported
F: drivers/pci/hotplug/rpaphp*
IBM Power IO DLPAR Driver for RPA-compliant PPC64 platform
M: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
L: linux-pci@vger.kernel.org
L: linuxppc-dev@lists.ozlabs.org
S: Supported
F: drivers/pci/hotplug/rpadlpar*
IBM ServeRAID RAID DRIVER
S: Orphan
F: drivers/scsi/ips.*
@ -8300,7 +8316,7 @@ F: include/linux/libata.h
F: Documentation/devicetree/bindings/ata/
LIBLOCKDEP
M: Sasha Levin <alexander.levin@verizon.com>
M: Sasha Levin <alexander.levin@microsoft.com>
S: Maintained
F: tools/lib/lockdep/
@ -9700,13 +9716,6 @@ Q: http://patchwork.linuxtv.org/project/linux-media/list/
S: Maintained
F: drivers/media/dvb-frontends/mn88473*
PCI DRIVER FOR MOBIVEIL PCIE IP
M: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
L: linux-pci@vger.kernel.org
S: Supported
F: Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
F: drivers/pci/controller/pcie-mobiveil.c
MODULE SUPPORT
M: Jessica Yu <jeyu@kernel.org>
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux.git modules-next
@ -10933,7 +10942,7 @@ M: Willy Tarreau <willy@haproxy.com>
M: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
S: Odd Fixes
F: Documentation/auxdisplay/lcd-panel-cgram.txt
F: drivers/misc/panel.c
F: drivers/auxdisplay/panel.c
PARALLEL PORT SUBSYSTEM
M: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
@ -11121,6 +11130,13 @@ F: include/uapi/linux/switchtec_ioctl.h
F: include/linux/switchtec.h
F: drivers/ntb/hw/mscc/
PCI DRIVER FOR MOBIVEIL PCIE IP
M: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
L: linux-pci@vger.kernel.org
S: Supported
F: Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
F: drivers/pci/controller/pcie-mobiveil.c
PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
M: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
M: Jason Cooper <jason@lakedaemon.net>
@ -11154,7 +11170,7 @@ F: drivers/pci/controller/dwc/pci-exynos.c
PCI DRIVER FOR SYNOPSYS DESIGNWARE
M: Jingoo Han <jingoohan1@gmail.com>
M: Joao Pinto <Joao.Pinto@synopsys.com>
M: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
L: linux-pci@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/pci/designware-pcie.txt
@ -11187,8 +11203,14 @@ F: tools/pci/
PCI ENHANCED ERROR HANDLING (EEH) FOR POWERPC
M: Russell Currey <ruscur@russell.cc>
M: Sam Bobroff <sbobroff@linux.ibm.com>
M: Oliver O'Halloran <oohall@gmail.com>
L: linuxppc-dev@lists.ozlabs.org
S: Supported
F: Documentation/PCI/pci-error-recovery.txt
F: drivers/pci/pcie/aer.c
F: drivers/pci/pcie/dpc.c
F: drivers/pci/pcie/err.c
F: Documentation/powerpc/eeh-pci-error-recovery.txt
F: arch/powerpc/kernel/eeh*.c
F: arch/powerpc/platforms/*/eeh*.c
@ -11346,10 +11368,10 @@ S: Maintained
F: drivers/platform/x86/peaq-wmi.c
PER-CPU MEMORY ALLOCATOR
M: Dennis Zhou <dennis@kernel.org>
M: Tejun Heo <tj@kernel.org>
M: Christoph Lameter <cl@linux.com>
M: Dennis Zhou <dennisszhou@gmail.com>
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu.git
S: Maintained
F: include/linux/percpu*.h
F: mm/percpu*.c
@ -12244,6 +12266,7 @@ F: Documentation/networking/rds.txt
RDT - RESOURCE ALLOCATION
M: Fenghua Yu <fenghua.yu@intel.com>
M: Reinette Chatre <reinette.chatre@intel.com>
L: linux-kernel@vger.kernel.org
S: Supported
F: arch/x86/kernel/cpu/intel_rdt*
@ -13433,9 +13456,8 @@ F: drivers/i2c/busses/i2c-synquacer.c
F: Documentation/devicetree/bindings/i2c/i2c-synquacer.txt
SOCIONEXT UNIPHIER SOUND DRIVER
M: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Maintained
S: Orphan
F: sound/soc/uniphier/
SOEKRIS NET48XX LED SUPPORT
@ -15373,7 +15395,7 @@ S: Maintained
UVESAFB DRIVER
M: Michal Januszewski <spock@gentoo.org>
L: linux-fbdev@vger.kernel.org
W: http://dev.gentoo.org/~spock/projects/uvesafb/
W: https://github.com/mjanusz/v86d
S: Maintained
F: Documentation/fb/uvesafb.txt
F: drivers/video/fbdev/uvesafb.*
@ -15897,6 +15919,7 @@ F: net/x25/
X86 ARCHITECTURE (32-BIT AND 64-BIT)
M: Thomas Gleixner <tglx@linutronix.de>
M: Ingo Molnar <mingo@redhat.com>
M: Borislav Petkov <bp@alien8.de>
R: "H. Peter Anvin" <hpa@zytor.com>
M: x86@kernel.org
L: linux-kernel@vger.kernel.org
@ -15925,6 +15948,15 @@ M: Borislav Petkov <bp@alien8.de>
S: Maintained
F: arch/x86/kernel/cpu/microcode/*
X86 MM
M: Dave Hansen <dave.hansen@linux.intel.com>
M: Andy Lutomirski <luto@kernel.org>
M: Peter Zijlstra <peterz@infradead.org>
L: linux-kernel@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/mm
S: Maintained
F: arch/x86/mm/
X86 PLATFORM DRIVERS
M: Darren Hart <dvhart@infradead.org>
M: Andy Shevchenko <andy@infradead.org>

24
Makefile
View File

@ -2,7 +2,7 @@
VERSION = 4
PATCHLEVEL = 19
SUBLEVEL = 0
EXTRAVERSION = -rc3
EXTRAVERSION = -rc6
NAME = Merciless Moray
# *DOCUMENTATION*
@ -299,19 +299,7 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
# SUBARCH tells the usermode build what the underlying arch is. That is set
# first, and if a usermode build is happening, the "ARCH=um" on the command
# line overrides the setting of ARCH below. If a native build is happening,
# then ARCH is assigned, getting whatever value it gets normally, and
# SUBARCH is subsequently ignored.
SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
-e s/sun4u/sparc64/ \
-e s/arm.*/arm/ -e s/sa110/arm/ \
-e s/s390x/s390/ -e s/parisc64/parisc/ \
-e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
-e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \
-e s/riscv.*/riscv/)
include scripts/subarch.include
# Cross compiling and selecting different set of gcc/bin-utils
# ---------------------------------------------------------------------------
@ -616,6 +604,11 @@ CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \
$(call cc-disable-warning,maybe-uninitialized,)
export CFLAGS_GCOV
# The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later.
ifdef CONFIG_FUNCTION_TRACER
CC_FLAGS_FTRACE := -pg
endif
# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
# values of the respective KBUILD_* variables
ARCH_CPPFLAGS :=
@ -755,9 +748,6 @@ KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
endif
ifdef CONFIG_FUNCTION_TRACER
ifndef CC_FLAGS_FTRACE
CC_FLAGS_FTRACE := -pg
endif
ifdef CONFIG_FTRACE_MCOUNT_RECORD
# gcc 5 supports generating the mcount tables directly
ifeq ($(call cc-option-yn,-mrecord-mcount),y)

2
arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
View File

@ -11,6 +11,7 @@
#include "sama5d2-pinfunc.h"
#include <dt-bindings/mfd/atmel-flexcom.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/at91.h>
/ {
model = "Atmel SAMA5D2 PTC EK";
@ -299,6 +300,7 @@ re_we_data {
<PIN_PA30__NWE_NANDWE>,
<PIN_PB2__NRD_NANDOE>;
bias-pull-up;
atmel,drive-strength = <ATMEL_PIO_DRVSTR_ME>;
};
ale_cle_rdy_cs {

14
arch/arm/boot/dts/bcm63138.dtsi
View File

@ -106,21 +106,23 @@ gic: interrupt-controller@1e100 {
global_timer: timer@1e200 {
compatible = "arm,cortex-a9-global-timer";
reg = <0x1e200 0x20>;
interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
interrupts = <GIC_PPI 11 IRQ_TYPE_EDGE_RISING>;
clocks = <&axi_clk>;
};
local_timer: local-timer@1e600 {
compatible = "arm,cortex-a9-twd-timer";
reg = <0x1e600 0x20>;
interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_HIGH>;
interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) |
IRQ_TYPE_EDGE_RISING)>;
clocks = <&axi_clk>;
};
twd_watchdog: watchdog@1e620 {
compatible = "arm,cortex-a9-twd-wdt";
reg = <0x1e620 0x20>;
interrupts = <GIC_PPI 14 IRQ_TYPE_LEVEL_HIGH>;
interrupts = <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) |
IRQ_TYPE_LEVEL_HIGH)>;
};
armpll: armpll {
@ -158,7 +160,7 @@ timer: timer@80 {
serial0: serial@600 {
compatible = "brcm,bcm6345-uart";
reg = <0x600 0x1b>;
interrupts = <GIC_SPI 32 0>;
interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&periph_clk>;
clock-names = "periph";
status = "disabled";
@ -167,7 +169,7 @@ serial0: serial@600 {
serial1: serial@620 {
compatible = "brcm,bcm6345-uart";
reg = <0x620 0x1b>;
interrupts = <GIC_SPI 33 0>;
interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&periph_clk>;
clock-names = "periph";
status = "disabled";
@ -180,7 +182,7 @@ nand: nand@2000 {
reg = <0x2000 0x600>, <0xf0 0x10>;
reg-names = "nand", "nand-int-base";
status = "disabled";
interrupts = <GIC_SPI 38 0>;
interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "nand";
};

2
arch/arm/boot/dts/sama5d3_emac.dtsi
View File

@ -41,7 +41,7 @@ macb1_clk: macb1_clk {
};
macb1: ethernet@f802c000 {
compatible = "cdns,at91sam9260-macb", "cdns,macb";
compatible = "atmel,sama5d3-macb", "cdns,at91sam9260-macb", "cdns,macb";
reg = <0xf802c000 0x100>;
interrupts = <35 IRQ_TYPE_LEVEL_HIGH 3>;
pinctrl-names = "default";

4
arch/arm/boot/dts/stm32mp157c.dtsi
View File

@ -1078,8 +1078,8 @@ spi6: spi@5c001000 {
interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&rcc SPI6_K>;
resets = <&rcc SPI6_R>;
dmas = <&mdma1 34 0x0 0x40008 0x0 0x0 0>,
<&mdma1 35 0x0 0x40002 0x0 0x0 0>;
dmas = <&mdma1 34 0x0 0x40008 0x0 0x0>,
<&mdma1 35 0x0 0x40002 0x0 0x0>;
dma-names = "rx", "tx";
status = "disabled";
};

3
arch/arm/boot/dts/sun8i-r40.dtsi
View File

@ -800,8 +800,7 @@ hdmi_out: port@1 {
};
hdmi_phy: hdmi-phy@1ef0000 {
compatible = "allwinner,sun8i-r40-hdmi-phy",
"allwinner,sun50i-a64-hdmi-phy";
compatible = "allwinner,sun8i-r40-hdmi-phy";
reg = <0x01ef0000 0x10000>;
clocks = <&ccu CLK_BUS_HDMI1>, <&ccu CLK_HDMI_SLOW>,
<&ccu 7>, <&ccu 16>;

4
arch/arm64/include/asm/jump_label.h
View File

@ -28,7 +28,7 @@
static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
asm goto("1: nop\n\t"
asm_volatile_goto("1: nop\n\t"
".pushsection __jump_table, \"aw\"\n\t"
".align 3\n\t"
".quad 1b, %l[l_yes], %c0\n\t"
@ -42,7 +42,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool bran
static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
{
asm goto("1: b %l[l_yes]\n\t"
asm_volatile_goto("1: b %l[l_yes]\n\t"
".pushsection __jump_table, \"aw\"\n\t"
".align 3\n\t"
".quad 1b, %l[l_yes], %c0\n\t"

1
arch/arm64/kernel/Makefile
View File

@ -54,6 +54,7 @@ arm64-obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o \
arm64-obj-$(CONFIG_ARM64_RELOC_TEST) += arm64-reloc-test.o
arm64-reloc-test-y := reloc_test_core.o reloc_test_syms.o
arm64-obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
arm64-obj-$(CONFIG_CRASH_CORE) += crash_core.o
arm64-obj-$(CONFIG_ARM_SDE_INTERFACE) += sdei.o
arm64-obj-$(CONFIG_ARM64_SSBD) += ssbd.o

19
arch/arm64/kernel/crash_core.c Normal file
View File

@ -0,0 +1,19 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) Linaro.
* Copyright (C) Huawei Futurewei Technologies.
*/
#include <linux/crash_core.h>
#include <asm/memory.h>
void arch_crash_save_vmcoreinfo(void)
{
VMCOREINFO_NUMBER(VA_BITS);
/* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */
vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n",
kimage_voffset);
vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n",
PHYS_OFFSET);
vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
}

11
arch/arm64/kernel/machine_kexec.c
View File

@ -358,14 +358,3 @@ void crash_free_reserved_phys_range(unsigned long begin, unsigned long end)
}
}
#endif /* CONFIG_HIBERNATION */
void arch_crash_save_vmcoreinfo(void)
{
VMCOREINFO_NUMBER(VA_BITS);
/* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */
vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n",
kimage_voffset);
vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n",
PHYS_OFFSET);
vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
}

55
arch/arm64/kvm/guest.c
View File

@ -57,6 +57,45 @@ static u64 core_reg_offset_from_id(u64 id)
return id & ~(KVM_REG_ARCH_MASK | KVM_REG_SIZE_MASK | KVM_REG_ARM_CORE);
}
static int validate_core_offset(const struct kvm_one_reg *reg)
{
u64 off = core_reg_offset_from_id(reg->id);
int size;
switch (off) {
case KVM_REG_ARM_CORE_REG(regs.regs[0]) ...
KVM_REG_ARM_CORE_REG(regs.regs[30]):
case KVM_REG_ARM_CORE_REG(regs.sp):
case KVM_REG_ARM_CORE_REG(regs.pc):
case KVM_REG_ARM_CORE_REG(regs.pstate):
case KVM_REG_ARM_CORE_REG(sp_el1):
case KVM_REG_ARM_CORE_REG(elr_el1):
case KVM_REG_ARM_CORE_REG(spsr[0]) ...
KVM_REG_ARM_CORE_REG(spsr[KVM_NR_SPSR - 1]):
size = sizeof(__u64);
break;
case KVM_REG_ARM_CORE_REG(fp_regs.vregs[0]) ...
KVM_REG_ARM_CORE_REG(fp_regs.vregs[31]):
size = sizeof(__uint128_t);
break;
case KVM_REG_ARM_CORE_REG(fp_regs.fpsr):
case KVM_REG_ARM_CORE_REG(fp_regs.fpcr):
size = sizeof(__u32);
break;
default:
return -EINVAL;
}
if (KVM_REG_SIZE(reg->id) == size &&
IS_ALIGNED(off, size / sizeof(__u32)))
return 0;
return -EINVAL;
}
static int get_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
{
/*
@ -76,6 +115,9 @@ static int get_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
(off + (KVM_REG_SIZE(reg->id) / sizeof(__u32))) >= nr_regs)
return -ENOENT;
if (validate_core_offset(reg))
return -EINVAL;
if (copy_to_user(uaddr, ((u32 *)regs) + off, KVM_REG_SIZE(reg->id)))
return -EFAULT;
@ -98,6 +140,9 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
(off + (KVM_REG_SIZE(reg->id) / sizeof(__u32))) >= nr_regs)
return -ENOENT;
if (validate_core_offset(reg))
return -EINVAL;
if (KVM_REG_SIZE(reg->id) > sizeof(tmp))
return -EINVAL;
@ -107,17 +152,25 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
}
if (off == KVM_REG_ARM_CORE_REG(regs.pstate)) {
u32 mode = (*(u32 *)valp) & PSR_AA32_MODE_MASK;
u64 mode = (*(u64 *)valp) & PSR_AA32_MODE_MASK;
switch (mode) {
case PSR_AA32_MODE_USR:
if (!system_supports_32bit_el0())
return -EINVAL;
break;
case PSR_AA32_MODE_FIQ:
case PSR_AA32_MODE_IRQ:
case PSR_AA32_MODE_SVC:
case PSR_AA32_MODE_ABT:
case PSR_AA32_MODE_UND:
if (!vcpu_el1_is_32bit(vcpu))
return -EINVAL;
break;
case PSR_MODE_EL0t:
case PSR_MODE_EL1t:
case PSR_MODE_EL1h:
if (vcpu_el1_is_32bit(vcpu))
return -EINVAL;
break;
default:
err = -EINVAL;

52
arch/arm64/mm/hugetlbpage.c
View File

@ -117,11 +117,14 @@ static pte_t get_clear_flush(struct mm_struct *mm,
/*
* If HW_AFDBM is enabled, then the HW could turn on
* the dirty bit for any page in the set, so check
* them all. All hugetlb entries are already young.
* the dirty or accessed bit for any page in the set,
* so check them all.
*/
if (pte_dirty(pte))
orig_pte = pte_mkdirty(orig_pte);
if (pte_young(pte))
orig_pte = pte_mkyoung(orig_pte);
}
if (valid) {
@ -320,11 +323,40 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
return get_clear_flush(mm, addr, ptep, pgsize, ncontig);
}
/*
* huge_ptep_set_access_flags will update access flags (dirty, accesssed)
* and write permission.
*
* For a contiguous huge pte range we need to check whether or not write
* permission has to change only on the first pte in the set. Then for
* all the contiguous ptes we need to check whether or not there is a
* discrepancy between dirty or young.
*/
static int __cont_access_flags_changed(pte_t *ptep, pte_t pte, int ncontig)
{
int i;
if (pte_write(pte) != pte_write(huge_ptep_get(ptep)))
return 1;
for (i = 0; i < ncontig; i++) {
pte_t orig_pte = huge_ptep_get(ptep + i);
if (pte_dirty(pte) != pte_dirty(orig_pte))
return 1;
if (pte_young(pte) != pte_young(orig_pte))
return 1;
}
return 0;
}
int huge_ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep,
pte_t pte, int dirty)
{
int ncontig, i, changed = 0;
int ncontig, i;
size_t pgsize = 0;
unsigned long pfn = pte_pfn(pte), dpfn;
pgprot_t hugeprot;
@ -336,19 +368,23 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma,
ncontig = find_num_contig(vma->vm_mm, addr, ptep, &pgsize);
dpfn = pgsize >> PAGE_SHIFT;
orig_pte = get_clear_flush(vma->vm_mm, addr, ptep, pgsize, ncontig);
if (!pte_same(orig_pte, pte))
changed = 1;
if (!__cont_access_flags_changed(ptep, pte, ncontig))
return 0;
/* Make sure we don't lose the dirty state */
orig_pte = get_clear_flush(vma->vm_mm, addr, ptep, pgsize, ncontig);
/* Make sure we don't lose the dirty or young state */
if (pte_dirty(orig_pte))
pte = pte_mkdirty(pte);
if (pte_young(orig_pte))
pte = pte_mkyoung(pte);
hugeprot = pte_pgprot(pte);
for (i = 0; i < ncontig; i++, ptep++, addr += pgsize, pfn += dpfn)
set_pte_at(vma->vm_mm, addr, ptep, pfn_pte(pfn, hugeprot));
return changed;
return 1;
}
void huge_ptep_set_wrprotect(struct mm_struct *mm,

4
arch/hexagon/include/asm/bitops.h
View File

@ -211,7 +211,7 @@ static inline long ffz(int x)
* This is defined the same way as ffs.
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
*/
static inline long fls(int x)
static inline int fls(int x)
{
int r;
@ -232,7 +232,7 @@ static inline long fls(int x)
* the libc and compiler builtin ffs routines, therefore
* differs in spirit from the above ffz (man ffs).
*/
static inline long ffs(int x)
static inline int ffs(int x)
{
int r;

2
arch/hexagon/kernel/dma.c
View File

@ -60,7 +60,7 @@ static void *hexagon_dma_alloc_coherent(struct device *dev, size_t size,
panic("Can't create %s() memory pool!", __func__);
else
gen_pool_add(coherent_pool,
pfn_to_virt(max_low_pfn),
(unsigned long)pfn_to_virt(max_low_pfn),
hexagon_coherent_pool_size, -1);
}

1
arch/mips/include/asm/mach-lantiq/xway/xway_dma.h
View File

@ -40,6 +40,7 @@ struct ltq_dma_channel {
int desc; /* the current descriptor */
struct ltq_dma_desc *desc_base; /* the descriptor base */
int phys; /* physical addr */
struct device *dev;
};
enum {

4
arch/mips/lantiq/xway/dma.c
View File

@ -130,7 +130,7 @@ ltq_dma_alloc(struct ltq_dma_channel *ch)
unsigned long flags;
ch->desc = 0;
ch->desc_base = dma_zalloc_coherent(NULL,
ch->desc_base = dma_zalloc_coherent(ch->dev,
LTQ_DESC_NUM * LTQ_DESC_SIZE,
&ch->phys, GFP_ATOMIC);
@ -182,7 +182,7 @@ ltq_dma_free(struct ltq_dma_channel *ch)
if (!ch->desc_base)
return;
ltq_dma_close(ch);
dma_free_coherent(NULL, LTQ_DESC_NUM * LTQ_DESC_SIZE,
dma_free_coherent(ch->dev, LTQ_DESC_NUM * LTQ_DESC_SIZE,
ch->desc_base, ch->phys);
}
EXPORT_SYMBOL_GPL(ltq_dma_free);

1
arch/powerpc/include/asm/book3s/64/pgtable.h
View File

@ -1051,7 +1051,6 @@ static inline void vmemmap_remove_mapping(unsigned long start,
return hash__vmemmap_remove_mapping(start, page_size);
}
#endif
struct page *realmode_pfn_to_page(unsigned long pfn);
static inline pte_t pmd_pte(pmd_t pmd)
{

2
arch/powerpc/include/asm/iommu.h
View File

@ -220,8 +220,6 @@ extern void iommu_del_device(struct device *dev);
extern int __init tce_iommu_bus_notifier_init(void);
extern long iommu_tce_xchg(struct iommu_table *tbl, unsigned long entry,
unsigned long *hpa, enum dma_data_direction *direction);
extern long iommu_tce_xchg_rm(struct iommu_table *tbl, unsigned long entry,
unsigned long *hpa, enum dma_data_direction *direction);
#else
static inline void iommu_register_group(struct iommu_table_group *table_group,
int pci_domain_number,

1
arch/powerpc/include/asm/mmu_context.h
View File

@ -38,6 +38,7 @@ extern long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem,
unsigned long ua, unsigned int pageshift, unsigned long *hpa);
extern long mm_iommu_ua_to_hpa_rm(struct mm_iommu_table_group_mem_t *mem,
unsigned long ua, unsigned int pageshift, unsigned long *hpa);
extern void mm_iommu_ua_mark_dirty_rm(struct mm_struct *mm, unsigned long ua);
extern long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem);
extern void mm_iommu_mapped_dec(struct mm_iommu_table_group_mem_t *mem);
#endif

1
arch/powerpc/include/asm/setup.h
View File

@ -9,6 +9,7 @@ extern void ppc_printk_progress(char *s, unsigned short hex);
extern unsigned int rtas_data;
extern unsigned long long memory_limit;
extern bool init_mem_is_free;
extern unsigned long klimit;
extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);

4
arch/powerpc/kernel/exceptions-64s.S
View File

@ -1314,9 +1314,7 @@ EXC_REAL_BEGIN(denorm_exception_hv, 0x1500, 0x100)
#ifdef CONFIG_PPC_DENORMALISATION
mfspr r10,SPRN_HSRR1
mfspr r11,SPRN_HSRR0 /* save HSRR0 */
andis. r10,r10,(HSRR1_DENORM)@h /* denorm? */
addi r11,r11,-4 /* HSRR0 is next instruction */
bne+ denorm_assist
#endif
@ -1382,6 +1380,8 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
*/
XVCPSGNDP32(32)
denorm_done:
mfspr r11,SPRN_HSRR0
subi r11,r11,4
mtspr SPRN_HSRR0,r11
mtcrf 0x80,r9
ld r9,PACA_EXGEN+EX_R9(r13)

25
arch/powerpc/kernel/iommu.c
View File

@ -1013,31 +1013,6 @@ long iommu_tce_xchg(struct iommu_table *tbl, unsigned long entry,
}
EXPORT_SYMBOL_GPL(iommu_tce_xchg);
#ifdef CONFIG_PPC_BOOK3S_64
long iommu_tce_xchg_rm(struct iommu_table *tbl, unsigned long entry,
unsigned long *hpa, enum dma_data_direction *direction)
{
long ret;
ret = tbl->it_ops->exchange_rm(tbl, entry, hpa, direction);
if (!ret && ((*direction == DMA_FROM_DEVICE) ||
(*direction == DMA_BIDIRECTIONAL))) {
struct page *pg = realmode_pfn_to_page(*hpa >> PAGE_SHIFT);
if (likely(pg)) {
SetPageDirty(pg);
} else {
tbl->it_ops->exchange_rm(tbl, entry, hpa, direction);
ret = -EFAULT;
}
}
return ret;
}
EXPORT_SYMBOL_GPL(iommu_tce_xchg_rm);
#endif
int iommu_take_ownership(struct iommu_table *tbl)
{
unsigned long flags, i, sz = (tbl->it_size + 7) >> 3;

20
arch/powerpc/kernel/tm.S
View File

@ -176,13 +176,27 @@ _GLOBAL(tm_reclaim)
std r1, PACATMSCRATCH(r13)
ld r1, PACAR1(r13)
/* Store the PPR in r11 and reset to decent value */
std r11, GPR11(r1) /* Temporary stash */
/*
* Move the saved user r1 to the kernel stack in case PACATMSCRATCH is
* clobbered by an exception once we turn on MSR_RI below.
*/
ld r11, PACATMSCRATCH(r13)
std r11, GPR1(r1)
/*
* Store r13 away so we can free up the scratch SPR for the SLB fault
* handler (needed once we start accessing the thread_struct).
*/
GET_SCRATCH0(r11)
std r11, GPR13(r1)
/* Reset MSR RI so we can take SLB faults again */
li r11, MSR_RI
mtmsrd r11, 1
/* Store the PPR in r11 and reset to decent value */
mfspr r11, SPRN_PPR
HMT_MEDIUM
@ -207,11 +221,11 @@ _GLOBAL(tm_reclaim)
SAVE_GPR(8, r7) /* user r8 */
SAVE_GPR(9, r7) /* user r9 */
SAVE_GPR(10, r7) /* user r10 */
ld r3, PACATMSCRATCH(r13) /* user r1 */
ld r3, GPR1(r1) /* user r1 */
ld r4, GPR7(r1) /* user r7 */
ld r5, GPR11(r1) /* user r11 */
ld r6, GPR12(r1) /* user r12 */
GET_SCRATCH0(8) /* user r13 */
ld r8, GPR13(r1) /* user r13 */
std r3, GPR1(r7)
std r4, GPR7(r7)
std r5, GPR11(r7)

91
arch/powerpc/kvm/book3s_64_mmu_radix.c
View File

@ -525,8 +525,8 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned long ea, unsigned long dsisr)
{
struct kvm *kvm = vcpu->kvm;
unsigned long mmu_seq, pte_size;
unsigned long gpa, gfn, hva, pfn;
unsigned long mmu_seq;
unsigned long gpa, gfn, hva;
struct kvm_memory_slot *memslot;
struct page *page = NULL;
long ret;
@ -623,9 +623,10 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
*/
hva = gfn_to_hva_memslot(memslot, gfn);
if (upgrade_p && __get_user_pages_fast(hva, 1, 1, &page) == 1) {
pfn = page_to_pfn(page);
upgrade_write = true;
} else {
unsigned long pfn;
/* Call KVM generic code to do the slow-path check */
pfn = __gfn_to_pfn_memslot(memslot, gfn, false, NULL,
writing, upgrade_p);
@ -639,61 +640,43 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
}
}
/* See if we can insert a 1GB or 2MB large PTE here */
level = 0;
if (page && PageCompound(page)) {
pte_size = PAGE_SIZE << compound_order(compound_head(page));
if (pte_size >= PUD_SIZE &&
(gpa & (PUD_SIZE - PAGE_SIZE)) ==
(hva & (PUD_SIZE - PAGE_SIZE))) {
level = 2;
pfn &= ~((PUD_SIZE >> PAGE_SHIFT) - 1);
} else if (pte_size >= PMD_SIZE &&
(gpa & (PMD_SIZE - PAGE_SIZE)) ==
(hva & (PMD_SIZE - PAGE_SIZE))) {
level = 1;
pfn &= ~((PMD_SIZE >> PAGE_SHIFT) - 1);
/*
* Read the PTE from the process' radix tree and use that
* so we get the shift and attribute bits.
*/
local_irq_disable();
ptep = __find_linux_pte(vcpu->arch.pgdir, hva, NULL, &shift);
pte = *ptep;
local_irq_enable();
/* Get pte level from shift/size */
if (shift == PUD_SHIFT &&
(gpa & (PUD_SIZE - PAGE_SIZE)) ==
(hva & (PUD_SIZE - PAGE_SIZE))) {
level = 2;
} else if (shift == PMD_SHIFT &&
(gpa & (PMD_SIZE - PAGE_SIZE)) ==
(hva & (PMD_SIZE - PAGE_SIZE))) {
level = 1;
} else {
level = 0;
if (shift > PAGE_SHIFT) {
/*
* If the pte maps more than one page, bring over
* bits from the virtual address to get the real
* address of the specific single page we want.
*/
unsigned long rpnmask = (1ul << shift) - PAGE_SIZE;
pte = __pte(pte_val(pte) | (hva & rpnmask));
}
}
/*
* Compute the PTE value that we need to insert.
*/
if (page) {
pgflags = _PAGE_READ | _PAGE_EXEC | _PAGE_PRESENT | _PAGE_PTE |
_PAGE_ACCESSED;
if (writing || upgrade_write)
pgflags |= _PAGE_WRITE | _PAGE_DIRTY;
pte = pfn_pte(pfn, __pgprot(pgflags));
pte = __pte(pte_val(pte) | _PAGE_EXEC | _PAGE_ACCESSED);
if (writing || upgrade_write) {
if (pte_val(pte) & _PAGE_WRITE)
pte = __pte(pte_val(pte) | _PAGE_DIRTY);
} else {
/*
* Read the PTE from the process' radix tree and use that
* so we get the attribute bits.
*/
local_irq_disable();
ptep = __find_linux_pte(vcpu->arch.pgdir, hva, NULL, &shift);
pte = *ptep;
local_irq_enable();
if (shift == PUD_SHIFT &&
(gpa & (PUD_SIZE - PAGE_SIZE)) ==
(hva & (PUD_SIZE - PAGE_SIZE))) {
level = 2;
} else if (shift == PMD_SHIFT &&
(gpa & (PMD_SIZE - PAGE_SIZE)) ==
(hva & (PMD_SIZE - PAGE_SIZE))) {
level = 1;
} else if (shift && shift != PAGE_SHIFT) {
/* Adjust PFN */
unsigned long mask = (1ul << shift) - PAGE_SIZE;
pte = __pte(pte_val(pte) | (hva & mask));
}
pte = __pte(pte_val(pte) | _PAGE_EXEC | _PAGE_ACCESSED);
if (writing || upgrade_write) {
if (pte_val(pte) & _PAGE_WRITE)
pte = __pte(pte_val(pte) | _PAGE_DIRTY);
} else {
pte = __pte(pte_val(pte) & ~(_PAGE_WRITE | _PAGE_DIRTY));
}
pte = __pte(pte_val(pte) & ~(_PAGE_WRITE | _PAGE_DIRTY));
}
/* Allocate space in the tree and write the PTE */

39
arch/powerpc/kvm/book3s_64_vio_hv.c
View File

@ -187,12 +187,35 @@ long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa,
EXPORT_SYMBOL_GPL(kvmppc_gpa_to_ua);
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
static void kvmppc_rm_clear_tce(struct iommu_table *tbl, unsigned long entry)
static long iommu_tce_xchg_rm(struct mm_struct *mm, struct iommu_table *tbl,
unsigned long entry, unsigned long *hpa,
enum dma_data_direction *direction)
{
long ret;
ret = tbl->it_ops->exchange_rm(tbl, entry, hpa, direction);
if (!ret && ((*direction == DMA_FROM_DEVICE) ||
(*direction == DMA_BIDIRECTIONAL))) {
__be64 *pua = IOMMU_TABLE_USERSPACE_ENTRY_RM(tbl, entry);
/*
* kvmppc_rm_tce_iommu_do_map() updates the UA cache after
* calling this so we still get here a valid UA.
*/
if (pua && *pua)
mm_iommu_ua_mark_dirty_rm(mm, be64_to_cpu(*pua));
}
return ret;
}
static void kvmppc_rm_clear_tce(struct kvm *kvm, struct iommu_table *tbl,
unsigned long entry)
{
unsigned long hpa = 0;
enum dma_data_direction dir = DMA_NONE;
iommu_tce_xchg_rm(tbl, entry, &hpa, &dir);
iommu_tce_xchg_rm(kvm->mm, tbl, entry, &hpa, &dir);
}
static long kvmppc_rm_tce_iommu_mapped_dec(struct kvm *kvm,
@ -224,7 +247,7 @@ static long kvmppc_rm_tce_iommu_do_unmap(struct kvm *kvm,
unsigned long hpa = 0;
long ret;
if (iommu_tce_xchg_rm(tbl, entry, &hpa, &dir))
if (iommu_tce_xchg_rm(kvm->mm, tbl, entry, &hpa, &dir))
/*
* real mode xchg can fail if struct page crosses
* a page boundary
@ -236,7 +259,7 @@ static long kvmppc_rm_tce_iommu_do_unmap(struct kvm *kvm,
ret = kvmppc_rm_tce_iommu_mapped_dec(kvm, tbl, entry);
if (ret)
iommu_tce_xchg_rm(tbl, entry, &hpa, &dir);
iommu_tce_xchg_rm(kvm->mm, tbl, entry, &hpa, &dir);
return ret;
}
@ -282,7 +305,7 @@ static long kvmppc_rm_tce_iommu_do_map(struct kvm *kvm, struct iommu_table *tbl,
if (WARN_ON_ONCE_RM(mm_iommu_mapped_inc(mem)))
return H_CLOSED;
ret = iommu_tce_xchg_rm(tbl, entry, &hpa, &dir);
ret = iommu_tce_xchg_rm(kvm->mm, tbl, entry, &hpa, &dir);
if (ret) {
mm_iommu_mapped_dec(mem);
/*
@ -371,7 +394,7 @@ long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
return ret;
WARN_ON_ONCE_RM(1);
kvmppc_rm_clear_tce(stit->tbl, entry);
kvmppc_rm_clear_tce(vcpu->kvm, stit->tbl, entry);
}
kvmppc_tce_put(stt, entry, tce);
@ -520,7 +543,7 @@ long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
goto unlock_exit;
WARN_ON_ONCE_RM(1);
kvmppc_rm_clear_tce(stit->tbl, entry);
kvmppc_rm_clear_tce(vcpu->kvm, stit->tbl, entry);
}
kvmppc_tce_put(stt, entry + i, tce);
@ -571,7 +594,7 @@ long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
return ret;
WARN_ON_ONCE_RM(1);
kvmppc_rm_clear_tce(stit->tbl, entry);
kvmppc_rm_clear_tce(vcpu->kvm, stit->tbl, entry);
}
}

3
arch/powerpc/lib/checksum_64.S
View File

@ -443,6 +443,9 @@ _GLOBAL(csum_ipv6_magic)
addc r0, r8, r9
ld r10, 0(r4)
ld r11, 8(r4)
#ifdef CONFIG_CPU_LITTLE_ENDIAN
rotldi r5, r5, 8
#endif
adde r0, r0, r10
add r5, r5, r7
adde r0, r0, r11

6
arch/powerpc/lib/code-patching.c
View File

@ -28,6 +28,12 @@ static int __patch_instruction(unsigned int *exec_addr, unsigned int instr,
{
int err;
/* Make sure we aren't patching a freed init section */
if (init_mem_is_free && init_section_contains(exec_addr, 4)) {
pr_debug("Skipping init section patching addr: 0x%px\n", exec_addr);
return 0;
}
__put_user_size(instr, patch_addr, 4, err);
if (err)
return err;

49
arch/powerpc/mm/init_64.c
View File

@ -308,55 +308,6 @@ void register_page_bootmem_memmap(unsigned long section_nr,
{
}
/*
* We do not have access to the sparsemem vmemmap, so we fallback to
* walking the list of sparsemem blocks which we already maintain for
* the sake of crashdump. In the long run, we might want to maintain
* a tree if performance of that linear walk becomes a problem.
*
* realmode_pfn_to_page functions can fail due to:
* 1) As real sparsemem blocks do not lay in RAM continously (they
* are in virtual address space which is not available in the real mode),
* the requested page struct can be split between blocks so get_page/put_page
* may fail.
* 2) When huge pages are used, the get_page/put_page API will fail
* in real mode as the linked addresses in the page struct are virtual
* too.
*/
struct page *realmode_pfn_to_page(unsigned long pfn)
{
struct vmemmap_backing *vmem_back;
struct page *page;
unsigned long page_size = 1 << mmu_psize_defs[mmu_vmemmap_psize].shift;
unsigned long pg_va = (unsigned long) pfn_to_page(pfn);
for (vmem_back = vmemmap_list; vmem_back; vmem_back = vmem_back->list) {
if (pg_va < vmem_back->virt_addr)
continue;
/* After vmemmap_list entry free is possible, need check all */
if ((pg_va + sizeof(struct page)) <=
(vmem_back->virt_addr + page_size)) {
page = (struct page *) (vmem_back->phys + pg_va -
vmem_back->virt_addr);
return page;
}
}
/* Probably that page struct is split between real pages */
return NULL;
}
EXPORT_SYMBOL_GPL(realmode_pfn_to_page);
#else
struct page *realmode_pfn_to_page(unsigned long pfn)
{
struct page *page = pfn_to_page(pfn);
return page;
}
EXPORT_SYMBOL_GPL(realmode_pfn_to_page);
#endif /* CONFIG_SPARSEMEM_VMEMMAP */
#ifdef CONFIG_PPC_BOOK3S_64

2
arch/powerpc/mm/mem.c
View File

@ -63,6 +63,7 @@
#endif
unsigned long long memory_limit;
bool init_mem_is_free;
#ifdef CONFIG_HIGHMEM
pte_t *kmap_pte;
@ -396,6 +397,7 @@ void free_initmem(void)
{
ppc_md.progress = ppc_printk_progress;
mark_initmem_nx();
init_mem_is_free = true;
free_initmem_default(POISON_FREE_INITMEM);
}

34
arch/powerpc/mm/mmu_context_iommu.c
View File

@ -18,11 +18,15 @@
#include <linux/migrate.h>
#include <linux/hugetlb.h>
#include <linux/swap.h>
#include <linux/sizes.h>
#include <asm/mmu_context.h>
#include <asm/pte-walk.h>
static DEFINE_MUTEX(mem_list_mutex);
#define MM_IOMMU_TABLE_GROUP_PAGE_DIRTY 0x1
#define MM_IOMMU_TABLE_GROUP_PAGE_MASK ~(SZ_4K - 1)
struct mm_iommu_table_group_mem_t {
struct list_head next;
struct rcu_head rcu;
@ -263,6 +267,9 @@ static void mm_iommu_unpin(struct mm_iommu_table_group_mem_t *mem)
if (!page)
continue;
if (mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY)
SetPageDirty(page);
put_page(page);
mem->hpas[i] = 0;
}
@ -360,7 +367,6 @@ struct mm_iommu_table_group_mem_t *mm_iommu_lookup_rm(struct mm_struct *mm,
return ret;
}
EXPORT_SYMBOL_GPL(mm_iommu_lookup_rm);
struct mm_iommu_table_group_mem_t *mm_iommu_find(struct mm_struct *mm,
unsigned long ua, unsigned long entries)
@ -390,7 +396,7 @@ long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem,
if (pageshift > mem->pageshift)
return -EFAULT;
*hpa = *va | (ua & ~PAGE_MASK);
*hpa = (*va & MM_IOMMU_TABLE_GROUP_PAGE_MASK) | (ua & ~PAGE_MASK);
return 0;
}
@ -413,11 +419,31 @@ long mm_iommu_ua_to_hpa_rm(struct mm_iommu_table_group_mem_t *mem,
if (!pa)
return -EFAULT;
*hpa = *pa | (ua & ~PAGE_MASK);
*hpa = (*pa & MM_IOMMU_TABLE_GROUP_PAGE_MASK) | (ua & ~PAGE_MASK);
return 0;
}
EXPORT_SYMBOL_GPL(mm_iommu_ua_to_hpa_rm);
extern void mm_iommu_ua_mark_dirty_rm(struct mm_struct *mm, unsigned long ua)
{
struct mm_iommu_table_group_mem_t *mem;
long entry;
void *va;
unsigned long *pa;
mem = mm_iommu_lookup_rm(mm, ua, PAGE_SIZE);
if (!mem)
return;
entry = (ua - mem->ua) >> PAGE_SHIFT;
va = &mem->hpas[entry];
pa = (void *) vmalloc_to_phys(va);
if (!pa)
return;
*pa |= MM_IOMMU_TABLE_GROUP_PAGE_DIRTY;
}
long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem)
{

7
arch/powerpc/mm/numa.c
View File

@ -1204,7 +1204,9 @@ int find_and_online_cpu_nid(int cpu)
int new_nid;
/* Use associativity from first thread for all siblings */
vphn_get_associativity(cpu, associativity);
if (vphn_get_associativity(cpu, associativity))
return cpu_to_node(cpu);
new_nid = associativity_to_nid(associativity);
if (new_nid < 0 || !node_possible(new_nid))
new_nid = first_online_node;
@ -1452,7 +1454,8 @@ static struct timer_list topology_timer;
static void reset_topology_timer(void)
{
mod_timer(&topology_timer, jiffies + topology_timer_secs * HZ);
if (vphn_enabled)
mod_timer(&topology_timer, jiffies + topology_timer_secs * HZ);
}
#ifdef CONFIG_SMP

2
arch/powerpc/mm/pkeys.c
View File

@ -45,7 +45,7 @@ static void scan_pkey_feature(void)
* Since any pkey can be used for data or execute, we will just treat
* all keys as equal and track them as one entity.
*/
pkeys_total = be32_to_cpu(vals[0]);
pkeys_total = vals[0];
pkeys_devtree_defined = true;
}

2
arch/powerpc/platforms/powernv/pci-ioda-tce.c
View File

@ -276,7 +276,7 @@ long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset,
level_shift = entries_shift + 3;
level_shift = max_t(unsigned int, level_shift, PAGE_SHIFT);
if ((level_shift - 3) * levels + page_shift >= 60)
if ((level_shift - 3) * levels + page_shift >= 55)
return -EINVAL;
/* Allocate TCE table */

7
arch/riscv/include/asm/asm-prototypes.h Normal file
View File

@ -0,0 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_RISCV_PROTOTYPES_H
#include <linux/ftrace.h>
#include <asm-generic/asm-prototypes.h>
#endif /* _ASM_RISCV_PROTOTYPES_H */

7
arch/riscv/kernel/setup.c
View File

@ -85,15 +85,8 @@ atomic_t hart_lottery;
#ifdef CONFIG_BLK_DEV_INITRD
static void __init setup_initrd(void)
{
extern char __initramfs_start[];
extern unsigned long __initramfs_size;
unsigned long size;
if (__initramfs_size > 0) {
initrd_start = (unsigned long)(&__initramfs_start);
initrd_end = initrd_start + __initramfs_size;
}
if (initrd_start >= initrd_end) {
printk(KERN_INFO "initrd not found or empty");
goto disable;

2
arch/s390/crypto/paes_s390.c
View File

@ -208,7 +208,7 @@ static int cbc_paes_crypt(struct blkcipher_desc *desc, unsigned long modifier,
walk->dst.virt.addr, walk->src.virt.addr, n);
if (k)
ret = blkcipher_walk_done(desc, walk, nbytes - k);
if (n < k) {
if (k < n) {
if (__cbc_paes_set_key(ctx) != 0)
return blkcipher_walk_done(desc, walk, -EIO);
memcpy(param.key, ctx->pk.protkey, MAXPROTKEYSIZE);

4
arch/s390/kvm/kvm-s390.c
View File

@ -481,7 +481,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
break;
case KVM_CAP_S390_HPAGE_1M:
r = 0;
if (hpage)
if (hpage && !kvm_is_ucontrol(kvm))
r = 1;
break;
case KVM_CAP_S390_MEM_OP:
@ -691,7 +691,7 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
mutex_lock(&kvm->lock);
if (kvm->created_vcpus)
r = -EBUSY;
else if (!hpage || kvm->arch.use_cmma)
else if (!hpage || kvm->arch.use_cmma || kvm_is_ucontrol(kvm))
r = -EINVAL;
else {
r = 0;

4
arch/s390/mm/gmap.c
View File

@ -708,11 +708,13 @@ void gmap_discard(struct gmap *gmap, unsigned long from, unsigned long to)
vmaddr |= gaddr & ~PMD_MASK;
/* Find vma in the parent mm */
vma = find_vma(gmap->mm, vmaddr);
if (!vma)
continue;
/*
* We do not discard pages that are backed by
* hugetlbfs, so we don't have to refault them.
*/
if (vma && is_vm_hugetlb_page(vma))
if (is_vm_hugetlb_page(vma))
continue;
size = min(to - gaddr, PMD_SIZE - (gaddr & ~PMD_MASK));
zap_page_range(vma, vmaddr, size);

19
arch/x86/boot/compressed/mem_encrypt.S
View File

@ -25,20 +25,6 @@ ENTRY(get_sev_encryption_bit)
push %ebx
push %ecx
push %edx
push %edi
/*
* RIP-relative addressing is needed to access the encryption bit
* variable. Since we are running in 32-bit mode we need this call/pop
* sequence to get the proper relative addressing.
*/
call 1f
1: popl %edi
subl $1b, %edi
movl enc_bit(%edi), %eax
cmpl $0, %eax
jge .Lsev_exit
/* Check if running under a hypervisor */
movl $1, %eax
@ -69,15 +55,12 @@ ENTRY(get_sev_encryption_bit)
movl %ebx, %eax
andl $0x3f, %eax /* Return the encryption bit location */
movl %eax, enc_bit(%edi)
jmp .Lsev_exit
.Lno_sev:
xor %eax, %eax
movl %eax, enc_bit(%edi)
.Lsev_exit:
pop %edi
pop %edx
pop %ecx
pop %ebx
@ -113,8 +96,6 @@ ENTRY(set_sev_encryption_mask)
ENDPROC(set_sev_encryption_mask)
.data
enc_bit:
.int 0xffffffff
#ifdef CONFIG_AMD_MEM_ENCRYPT
.balign 8

1
arch/x86/crypto/aegis128-aesni-glue.c
View File

@ -379,7 +379,6 @@ static int __init crypto_aegis128_aesni_module_init(void)
{
if (!boot_cpu_has(X86_FEATURE_XMM2) ||
!boot_cpu_has(X86_FEATURE_AES) ||
!boot_cpu_has(X86_FEATURE_OSXSAVE) ||
!cpu_has_xfeatures(XFEATURE_MASK_SSE, NULL))
return -ENODEV;

1
arch/x86/crypto/aegis128l-aesni-glue.c
View File

@ -379,7 +379,6 @@ static int __init crypto_aegis128l_aesni_module_init(void)
{
if (!boot_cpu_has(X86_FEATURE_XMM2) ||
!boot_cpu_has(X86_FEATURE_AES) ||
!boot_cpu_has(X86_FEATURE_OSXSAVE) ||
!cpu_has_xfeatures(XFEATURE_MASK_SSE, NULL))
return -ENODEV;

1
arch/x86/crypto/aegis256-aesni-glue.c
View File

@ -379,7 +379,6 @@ static int __init crypto_aegis256_aesni_module_init(void)
{
if (!boot_cpu_has(X86_FEATURE_XMM2) ||
!boot_cpu_has(X86_FEATURE_AES) ||
!boot_cpu_has(X86_FEATURE_OSXSAVE) ||
!cpu_has_xfeatures(XFEATURE_MASK_SSE, NULL))
return -ENODEV;

1
arch/x86/crypto/morus1280-sse2-glue.c
View File

@ -40,7 +40,6 @@ MORUS1280_DECLARE_ALGS(sse2, "morus1280-sse2", 350);
static int __init crypto_morus1280_sse2_module_init(void)
{
if (!boot_cpu_has(X86_FEATURE_XMM2) ||
!boot_cpu_has(X86_FEATURE_OSXSAVE) ||
!cpu_has_xfeatures(XFEATURE_MASK_SSE, NULL))
return -ENODEV;

1
arch/x86/crypto/morus640-sse2-glue.c
View File

@ -40,7 +40,6 @@ MORUS640_DECLARE_ALGS(sse2, "morus640-sse2", 400);
static int __init crypto_morus640_sse2_module_init(void)
{
if (!boot_cpu_has(X86_FEATURE_XMM2) ||
!boot_cpu_has(X86_FEATURE_OSXSAVE) ||
!cpu_has_xfeatures(XFEATURE_MASK_SSE, NULL))
return -ENODEV;

4
arch/x86/events/intel/lbr.c
View File

@ -1272,4 +1272,8 @@ void intel_pmu_lbr_init_knl(void)
x86_pmu.lbr_sel_mask = LBR_SEL_MASK;
x86_pmu.lbr_sel_map = snb_lbr_sel_map;
/* Knights Landing does have MISPREDICT bit */
if (x86_pmu.intel_cap.lbr_format == LBR_FORMAT_LIP)
x86_pmu.intel_cap.lbr_format = LBR_FORMAT_EIP_FLAGS;
}

8
arch/x86/hyperv/hv_apic.c
View File

@ -95,8 +95,8 @@ static void hv_apic_eoi_write(u32 reg, u32 val)
*/
static bool __send_ipi_mask_ex(const struct cpumask *mask, int vector)
{
struct ipi_arg_ex **arg;
struct ipi_arg_ex *ipi_arg;
struct hv_send_ipi_ex **arg;
struct hv_send_ipi_ex *ipi_arg;
unsigned long flags;
int nr_bank = 0;
int ret = 1;
@ -105,7 +105,7 @@ static bool __send_ipi_mask_ex(const struct cpumask *mask, int vector)
return false;
local_irq_save(flags);
arg = (struct ipi_arg_ex **)this_cpu_ptr(hyperv_pcpu_input_arg);
arg = (struct hv_send_ipi_ex **)this_cpu_ptr(hyperv_pcpu_input_arg);
ipi_arg = *arg;
if (unlikely(!ipi_arg))
@ -135,7 +135,7 @@ static bool __send_ipi_mask_ex(const struct cpumask *mask, int vector)
static bool __send_ipi_mask(const struct cpumask *mask, int vector)
{
int cur_cpu, vcpu;
struct ipi_arg_non_ex ipi_arg;
struct hv_send_ipi ipi_arg;
int ret = 1;
trace_hyperv_send_ipi_mask(mask, vector);

10
arch/x86/include/asm/fixmap.h
View File

@ -14,6 +14,16 @@
#ifndef _ASM_X86_FIXMAP_H
#define _ASM_X86_FIXMAP_H
/*
* Exposed to assembly code for setting up initial page tables. Cannot be
* calculated in assembly code (fixmap entries are an enum), but is sanity
* checked in the actual fixmap C code to make sure that the fixmap is
* covered fully.
*/
#define FIXMAP_PMD_NUM 2
/* fixmap starts downwards from the 507th entry in level2_fixmap_pgt */
#define FIXMAP_PMD_TOP 507
#ifndef __ASSEMBLY__
#include <linux/kernel.h>
#include <asm/acpi.h>

16
arch/x86/include/asm/hyperv-tlfs.h
View File

@ -726,19 +726,21 @@ struct hv_enlightened_vmcs {
#define HV_STIMER_AUTOENABLE (1ULL << 3)
#define HV_STIMER_SINT(config) (__u8)(((config) >> 16) & 0x0F)
struct ipi_arg_non_ex {
u32 vector;
u32 reserved;
u64 cpu_mask;
};
struct hv_vpset {
u64 format;
u64 valid_bank_mask;
u64 bank_contents[];
};
struct ipi_arg_ex {
/* HvCallSendSyntheticClusterIpi hypercall */
struct hv_send_ipi {
u32 vector;
u32 reserved;
u64 cpu_mask;
};
/* HvCallSendSyntheticClusterIpiEx hypercall */
struct hv_send_ipi_ex {
u32 vector;
u32 reserved;
struct hv_vpset vp_set;

5
arch/x86/include/asm/kvm_host.h
View File

@ -869,6 +869,8 @@ struct kvm_arch {
bool x2apic_format;
bool x2apic_broadcast_quirk_disabled;
bool guest_can_read_msr_platform_info;
};
struct kvm_vm_stat {
@ -1022,6 +1024,7 @@ struct kvm_x86_ops {
void (*refresh_apicv_exec_ctrl)(struct kvm_vcpu *vcpu);
void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
void (*hwapic_isr_update)(struct kvm_vcpu *vcpu, int isr);
bool (*guest_apic_has_interrupt)(struct kvm_vcpu *vcpu);
void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
void (*set_virtual_apic_mode)(struct kvm_vcpu *vcpu);
void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa);
@ -1055,6 +1058,7 @@ struct kvm_x86_ops {
bool (*umip_emulated)(void);
int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr);
void (*request_immediate_exit)(struct kvm_vcpu *vcpu);
void (*sched_in)(struct kvm_vcpu *kvm, int cpu);
@ -1482,6 +1486,7 @@ extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
int kvm_skip_emulated_instruction(struct kvm_vcpu *vcpu);
int kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
void __kvm_request_immediate_exit(struct kvm_vcpu *vcpu);
int kvm_is_in_guest(void);

7
arch/x86/include/asm/mem_encrypt.h
View File

@ -48,10 +48,13 @@ int __init early_set_memory_encrypted(unsigned long vaddr, unsigned long size);
/* Architecture __weak replacement functions */
void __init mem_encrypt_init(void);
void __init mem_encrypt_free_decrypted_mem(void);
bool sme_active(void);
bool sev_active(void);
#define __bss_decrypted __attribute__((__section__(".bss..decrypted")))
#else /* !CONFIG_AMD_MEM_ENCRYPT */
#define sme_me_mask 0ULL
@ -77,6 +80,8 @@ early_set_memory_decrypted(unsigned long vaddr, unsigned long size) { return 0;
static inline int __init
early_set_memory_encrypted(unsigned long vaddr, unsigned long size) { return 0; }
#define __bss_decrypted
#endif /* CONFIG_AMD_MEM_ENCRYPT */
/*
@ -88,6 +93,8 @@ early_set_memory_encrypted(unsigned long vaddr, unsigned long size) { return 0;
#define __sme_pa(x) (__pa(x) | sme_me_mask)
#define __sme_pa_nodebug(x) (__pa_nodebug(x) | sme_me_mask)
extern char __start_bss_decrypted[], __end_bss_decrypted[], __start_bss_decrypted_unused[];
#endif /* __ASSEMBLY__ */
#endif /* __X86_MEM_ENCRYPT_H__ */

9
arch/x86/include/asm/pgtable-2level.h
View File

@ -19,9 +19,6 @@ static inline void native_set_pte(pte_t *ptep , pte_t pte)
static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
{
#ifdef CONFIG_PAGE_TABLE_ISOLATION
pmd.pud.p4d.pgd = pti_set_user_pgtbl(&pmdp->pud.p4d.pgd, pmd.pud.p4d.pgd);
#endif
*pmdp = pmd;
}
@ -61,9 +58,6 @@ static inline pte_t native_ptep_get_and_clear(pte_t *xp)
#ifdef CONFIG_SMP
static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp)
{
#ifdef CONFIG_PAGE_TABLE_ISOLATION
pti_set_user_pgtbl(&xp->pud.p4d.pgd, __pgd(0));
#endif
return __pmd(xchg((pmdval_t *)xp, 0));
}
#else
@ -73,9 +67,6 @@ static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp)
#ifdef CONFIG_SMP
static inline pud_t native_pudp_get_and_clear(pud_t *xp)
{
#ifdef CONFIG_PAGE_TABLE_ISOLATION
pti_set_user_pgtbl(&xp->p4d.pgd, __pgd(0));
#endif
return __pud(xchg((pudval_t *)xp, 0));
}
#else

3
arch/x86/include/asm/pgtable_64.h
View File

@ -14,6 +14,7 @@
#include <asm/processor.h>
#include <linux/bitops.h>
#include <linux/threads.h>
#include <asm/fixmap.h>
extern p4d_t level4_kernel_pgt[512];
extern p4d_t level4_ident_pgt[512];
@ -22,7 +23,7 @@ extern pud_t level3_ident_pgt[512];
extern pmd_t level2_kernel_pgt[512];
extern pmd_t level2_fixmap_pgt[512];
extern pmd_t level2_ident_pgt[512];
extern pte_t level1_fixmap_pgt[512];
extern pte_t level1_fixmap_pgt[512 * FIXMAP_PMD_NUM];
extern pgd_t init_top_pgt[];
#define swapper_pg_dir init_top_pgt

1
arch/x86/include/uapi/asm/kvm.h
View File

@ -377,6 +377,7 @@ struct kvm_sync_regs {
#define KVM_X86_QUIRK_LINT0_REENABLED (1 << 0)
#define KVM_X86_QUIRK_CD_NW_CLEARED (1 << 1)
#define KVM_X86_QUIRK_LAPIC_MMIO_HOLE (1 << 2)
#define KVM_STATE_NESTED_GUEST_MODE 0x00000001
#define KVM_STATE_NESTED_RUN_PENDING 0x00000002

2
arch/x86/kernel/apm_32.c
View File

@ -1640,6 +1640,7 @@ static int do_open(struct inode *inode, struct file *filp)
return 0;
}
#ifdef CONFIG_PROC_FS
static int proc_apm_show(struct seq_file *m, void *v)
{
unsigned short bx;
@ -1719,6 +1720,7 @@ static int proc_apm_show(struct seq_file *m, void *v)
units);
return 0;
}
#endif
static int apm(void *unused)
{

17
arch/x86/kernel/cpu/intel_rdt.h
View File

@ -382,6 +382,11 @@ static inline bool is_mbm_event(int e)
e <= QOS_L3_MBM_LOCAL_EVENT_ID);
}
struct rdt_parse_data {
struct rdtgroup *rdtgrp;
char *buf;
};
/**
* struct rdt_resource - attributes of an RDT resource
* @rid: The index of the resource
@ -423,16 +428,19 @@ struct rdt_resource {
struct rdt_cache cache;
struct rdt_membw membw;
const char *format_str;
int (*parse_ctrlval) (void *data, struct rdt_resource *r,
struct rdt_domain *d);
int (*parse_ctrlval)(struct rdt_parse_data *data,
struct rdt_resource *r,
struct rdt_domain *d);
struct list_head evt_list;
int num_rmid;
unsigned int mon_scale;
unsigned long fflags;
};
int parse_cbm(void *_data, struct rdt_resource *r, struct rdt_domain *d);
int parse_bw(void *_buf, struct rdt_resource *r, struct rdt_domain *d);
int parse_cbm(struct rdt_parse_data *data, struct rdt_resource *r,
struct rdt_domain *d);
int parse_bw(struct rdt_parse_data *data, struct rdt_resource *r,
struct rdt_domain *d);
extern struct mutex rdtgroup_mutex;
@ -536,6 +544,7 @@ int rdtgroup_pseudo_lock_create(struct rdtgroup *rdtgrp);
void rdtgroup_pseudo_lock_remove(struct rdtgroup *rdtgrp);
struct rdt_domain *get_domain_from_cpu(int cpu, struct rdt_resource *r);
int update_domains(struct rdt_resource *r, int closid);
int closids_supported(void);
void closid_free(int closid);
int alloc_rmid(void);
void free_rmid(u32 rmid);

27
arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c
View File

@ -64,19 +64,19 @@ static bool bw_validate(char *buf, unsigned long *data, struct rdt_resource *r)
return true;
}
int parse_bw(void *_buf, struct rdt_resource *r, struct rdt_domain *d)
int parse_bw(struct rdt_parse_data *data, struct rdt_resource *r,
struct rdt_domain *d)
{
unsigned long data;
char *buf = _buf;
unsigned long bw_val;
if (d->have_new_ctrl) {
rdt_last_cmd_printf("duplicate domain %d\n", d->id);
return -EINVAL;
}
if (!bw_validate(buf, &data, r))
if (!bw_validate(data->buf, &bw_val, r))
return -EINVAL;
d->new_ctrl = data;
d->new_ctrl = bw_val;
d->have_new_ctrl = true;
return 0;
@ -123,18 +123,13 @@ static bool cbm_validate(char *buf, u32 *data, struct rdt_resource *r)
return true;
}
struct rdt_cbm_parse_data {
struct rdtgroup *rdtgrp;
char *buf;
};
/*
* Read one cache bit mask (hex). Check that it is valid for the current
* resource type.
*/
int parse_cbm(void *_data, struct rdt_resource *r, struct rdt_domain *d)
int parse_cbm(struct rdt_parse_data *data, struct rdt_resource *r,
struct rdt_domain *d)
{
struct rdt_cbm_parse_data *data = _data;
struct rdtgroup *rdtgrp = data->rdtgrp;
u32 cbm_val;
@ -195,11 +190,17 @@ int parse_cbm(void *_data, struct rdt_resource *r, struct rdt_domain *d)
static int parse_line(char *line, struct rdt_resource *r,
struct rdtgroup *rdtgrp)
{
struct rdt_cbm_parse_data data;
struct rdt_parse_data data;
char *dom = NULL, *id;
struct rdt_domain *d;
unsigned long dom_id;
if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP &&
r->rid == RDT_RESOURCE_MBA) {
rdt_last_cmd_puts("Cannot pseudo-lock MBA resource\n");
return -EINVAL;
}
next:
if (!line || line[0] == '\0')
return 0;

53
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
View File

@ -97,6 +97,12 @@ void rdt_last_cmd_printf(const char *fmt, ...)
* limited as the number of resources grows.
*/
static int closid_free_map;
static int closid_free_map_len;
int closids_supported(void)
{
return closid_free_map_len;
}
static void closid_init(void)
{
@ -111,6 +117,7 @@ static void closid_init(void)
/* CLOSID 0 is always reserved for the default group */
closid_free_map &= ~1;
closid_free_map_len = rdt_min_closid;
}
static int closid_alloc(void)
@ -802,7 +809,7 @@ static int rdt_bit_usage_show(struct kernfs_open_file *of,
sw_shareable = 0;
exclusive = 0;
seq_printf(seq, "%d=", dom->id);
for (i = 0; i < r->num_closid; i++, ctrl++) {
for (i = 0; i < closids_supported(); i++, ctrl++) {
if (!closid_allocated(i))
continue;
mode = rdtgroup_mode_by_closid(i);
@ -989,7 +996,7 @@ bool rdtgroup_cbm_overlaps(struct rdt_resource *r, struct rdt_domain *d,
/* Check for overlap with other resource groups */
ctrl = d->ctrl_val;
for (i = 0; i < r->num_closid; i++, ctrl++) {
for (i = 0; i < closids_supported(); i++, ctrl++) {
ctrl_b = (unsigned long *)ctrl;
mode = rdtgroup_mode_by_closid(i);
if (closid_allocated(i) && i != closid &&
@ -1024,16 +1031,27 @@ static bool rdtgroup_mode_test_exclusive(struct rdtgroup *rdtgrp)
{
int closid = rdtgrp->closid;
struct rdt_resource *r;
bool has_cache = false;
struct rdt_domain *d;
for_each_alloc_enabled_rdt_resource(r) {
if (r->rid == RDT_RESOURCE_MBA)
continue;
has_cache = true;
list_for_each_entry(d, &r->domains, list) {
if (rdtgroup_cbm_overlaps(r, d, d->ctrl_val[closid],
rdtgrp->closid, false))
rdtgrp->closid, false)) {
rdt_last_cmd_puts("schemata overlaps\n");
return false;
}
}
}
if (!has_cache) {
rdt_last_cmd_puts("cannot be exclusive without CAT/CDP\n");
return false;
}
return true;
}
@ -1085,7 +1103,6 @@ static ssize_t rdtgroup_mode_write(struct kernfs_open_file *of,
rdtgrp->mode = RDT_MODE_SHAREABLE;
} else if (!strcmp(buf, "exclusive")) {
if (!rdtgroup_mode_test_exclusive(rdtgrp)) {
rdt_last_cmd_printf("schemata overlaps\n");
ret = -EINVAL;
goto out;
}
@ -1155,8 +1172,8 @@ static int rdtgroup_size_show(struct kernfs_open_file *of,
struct rdt_resource *r;
struct rdt_domain *d;
unsigned int size;
bool sep = false;
u32 cbm;
bool sep;
u32 ctrl;
rdtgrp = rdtgroup_kn_lock_live(of->kn);
if (!rdtgrp) {
@ -1174,6 +1191,7 @@ static int rdtgroup_size_show(struct kernfs_open_file *of,
}
for_each_alloc_enabled_rdt_resource(r) {
sep = false;
seq_printf(s, "%*s:", max_name_width, r->name);
list_for_each_entry(d, &r->domains, list) {
if (sep)
@ -1181,8 +1199,13 @@ static int rdtgroup_size_show(struct kernfs_open_file *of,
if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP) {
size = 0;
} else {
cbm = d->ctrl_val[rdtgrp->closid];
size = rdtgroup_cbm_to_size(r, d, cbm);
ctrl = (!is_mba_sc(r) ?
d->ctrl_val[rdtgrp->closid] :
d->mbps_val[rdtgrp->closid]);
if (r->rid == RDT_RESOURCE_MBA)
size = ctrl;
else
size = rdtgroup_cbm_to_size(r, d, ctrl);
}
seq_printf(s, "%d=%u", d->id, size);
sep = true;
@ -2336,12 +2359,18 @@ static int rdtgroup_init_alloc(struct rdtgroup *rdtgrp)
u32 *ctrl;
for_each_alloc_enabled_rdt_resource(r) {
/*
* Only initialize default allocations for CBM cache
* resources
*/
if (r->rid == RDT_RESOURCE_MBA)
continue;
list_for_each_entry(d, &r->domains, list) {
d->have_new_ctrl = false;
d->new_ctrl = r->cache.shareable_bits;
used_b = r->cache.shareable_bits;
ctrl = d->ctrl_val;
for (i = 0; i < r->num_closid; i++, ctrl++) {
for (i = 0; i < closids_supported(); i++, ctrl++) {
if (closid_allocated(i) && i != closid) {
mode = rdtgroup_mode_by_closid(i);
if (mode == RDT_MODE_PSEUDO_LOCKSETUP)
@ -2373,6 +2402,12 @@ static int rdtgroup_init_alloc(struct rdtgroup *rdtgrp)
}
for_each_alloc_enabled_rdt_resource(r) {
/*
* Only initialize default allocations for CBM cache
* resources
*/
if (r->rid == RDT_RESOURCE_MBA)
continue;
ret = update_domains(r, rdtgrp->closid);
if (ret < 0) {
rdt_last_cmd_puts("failed to initialize allocations\n");

10
arch/x86/kernel/eisa.c
View File

@ -7,11 +7,17 @@
#include <linux/eisa.h>
#include <linux/io.h>
#include <xen/xen.h>
static __init int eisa_bus_probe(void)
{
void __iomem *p = ioremap(0x0FFFD9, 4);
void __iomem *p;
if (readl(p) == 'E' + ('I'<<8) + ('S'<<16) + ('A'<<24))
if (xen_pv_domain() && !xen_initial_domain())
return 0;
p = ioremap(0x0FFFD9, 4);
if (p && readl(p) == 'E' + ('I' << 8) + ('S' << 16) + ('A' << 24))
EISA_bus = 1;
iounmap(p);
return 0;

20
arch/x86/kernel/head64.c
View File

@ -35,6 +35,7 @@
#include <asm/bootparam_utils.h>
#include <asm/microcode.h>
#include <asm/kasan.h>
#include <asm/fixmap.h>
/*
* Manage page tables very early on.
@ -112,6 +113,7 @@ static bool __head check_la57_support(unsigned long physaddr)
unsigned long __head __startup_64(unsigned long physaddr,
struct boot_params *bp)
{
unsigned long vaddr, vaddr_end;
unsigned long load_delta, *p;
unsigned long pgtable_flags;
pgdval_t *pgd;
@ -165,7 +167,8 @@ unsigned long __head __startup_64(unsigned long physaddr,
pud[511] += load_delta;
pmd = fixup_pointer(level2_fixmap_pgt, physaddr);
pmd[506] += load_delta;
for (i = FIXMAP_PMD_TOP; i > FIXMAP_PMD_TOP - FIXMAP_PMD_NUM; i--)
pmd[i] += load_delta;
/*
* Set up the identity mapping for the switchover. These
@ -234,6 +237,21 @@ unsigned long __head __startup_64(unsigned long physaddr,
/* Encrypt the kernel and related (if SME is active) */
sme_encrypt_kernel(bp);
/*
* Clear the memory encryption mask from the .bss..decrypted section.
* The bss section will be memset to zero later in the initialization so
* there is no need to zero it after changing the memory encryption
* attribute.
*/
if (mem_encrypt_active()) {
vaddr = (unsigned long)__start_bss_decrypted;
vaddr_end = (unsigned long)__end_bss_decrypted;
for (; vaddr < vaddr_end; vaddr += PMD_SIZE) {
i = pmd_index(vaddr);
pmd[i] -= sme_get_me_mask();
}
}
/*
* Return the SME encryption mask (if SME is active) to be used as a
* modifier for the initial pgdir entry programmed into CR3.

16
arch/x86/kernel/head_64.S
View File

@ -24,6 +24,7 @@
#include "../entry/calling.h"
#include <asm/export.h>
#include <asm/nospec-branch.h>
#include <asm/fixmap.h>
#ifdef CONFIG_PARAVIRT
#include <asm/asm-offsets.h>
@ -445,13 +446,20 @@ NEXT_PAGE(level2_kernel_pgt)
KERNEL_IMAGE_SIZE/PMD_SIZE)
NEXT_PAGE(level2_fixmap_pgt)
.fill 506,8,0
.quad level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE_NOENC
/* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */
.fill 5,8,0
.fill (512 - 4 - FIXMAP_PMD_NUM),8,0
pgtno = 0
.rept (FIXMAP_PMD_NUM)
.quad level1_fixmap_pgt + (pgtno << PAGE_SHIFT) - __START_KERNEL_map \
+ _PAGE_TABLE_NOENC;
pgtno = pgtno + 1
.endr
/* 6 MB reserved space + a 2MB hole */
.fill 4,8,0
NEXT_PAGE(level1_fixmap_pgt)
.rept (FIXMAP_PMD_NUM)
.fill 512,8,0
.endr
#undef PMDS

52
arch/x86/kernel/kvmclock.c
View File

@ -28,6 +28,7 @@
#include <linux/sched/clock.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/set_memory.h>
#include <asm/hypervisor.h>
#include <asm/mem_encrypt.h>
@ -61,9 +62,10 @@ early_param("no-kvmclock-vsyscall", parse_no_kvmclock_vsyscall);
(PAGE_SIZE / sizeof(struct pvclock_vsyscall_time_info))
static struct pvclock_vsyscall_time_info
hv_clock_boot[HVC_BOOT_ARRAY_SIZE] __aligned(PAGE_SIZE);
static struct pvclock_wall_clock wall_clock;
hv_clock_boot[HVC_BOOT_ARRAY_SIZE] __bss_decrypted __aligned(PAGE_SIZE);
static struct pvclock_wall_clock wall_clock __bss_decrypted;
static DEFINE_PER_CPU(struct pvclock_vsyscall_time_info *, hv_clock_per_cpu);
static struct pvclock_vsyscall_time_info *hvclock_mem;
static inline struct pvclock_vcpu_time_info *this_cpu_pvti(void)
{
@ -236,6 +238,45 @@ static void kvm_shutdown(void)
native_machine_shutdown();
}
static void __init kvmclock_init_mem(void)
{
unsigned long ncpus;
unsigned int order;
struct page *p;
int r;
if (HVC_BOOT_ARRAY_SIZE >= num_possible_cpus())
return;
ncpus = num_possible_cpus() - HVC_BOOT_ARRAY_SIZE;
order = get_order(ncpus * sizeof(*hvclock_mem));
p = alloc_pages(GFP_KERNEL, order);
if (!p) {
pr_warn("%s: failed to alloc %d pages", __func__, (1U << order));
return;
}
hvclock_mem = page_address(p);
/*
* hvclock is shared between the guest and the hypervisor, must
* be mapped decrypted.
*/
if (sev_active()) {
r = set_memory_decrypted((unsigned long) hvclock_mem,
1UL << order);
if (r) {
__free_pages(p, order);
hvclock_mem = NULL;
pr_warn("kvmclock: set_memory_decrypted() failed. Disabling\n");
return;
}
}
memset(hvclock_mem, 0, PAGE_SIZE << order);
}
static int __init kvm_setup_vsyscall_timeinfo(void)
{
#ifdef CONFIG_X86_64
@ -250,6 +291,9 @@ static int __init kvm_setup_vsyscall_timeinfo(void)
kvm_clock.archdata.vclock_mode = VCLOCK_PVCLOCK;
#endif
kvmclock_init_mem();
return 0;
}
early_initcall(kvm_setup_vsyscall_timeinfo);
@ -269,8 +313,10 @@ static int kvmclock_setup_percpu(unsigned int cpu)
/* Use the static page for the first CPUs, allocate otherwise */
if (cpu < HVC_BOOT_ARRAY_SIZE)
p = &hv_clock_boot[cpu];
else if (hvclock_mem)
p = hvclock_mem + cpu - HVC_BOOT_ARRAY_SIZE;
else
p = kzalloc(sizeof(*p), GFP_KERNEL);
return -ENOMEM;
per_cpu(hv_clock_per_cpu, cpu) = p;
return p ? 0 : -ENOMEM;

4
arch/x86/kernel/paravirt.c
View File

@ -91,7 +91,7 @@ unsigned paravirt_patch_call(void *insnbuf,
if (len < 5) {
#ifdef CONFIG_RETPOLINE
WARN_ONCE("Failing to patch indirect CALL in %ps\n", (void *)addr);
WARN_ONCE(1, "Failing to patch indirect CALL in %ps\n", (void *)addr);
#endif
return len; /* call too long for patch site */
}
@ -111,7 +111,7 @@ unsigned paravirt_patch_jmp(void *insnbuf, const void *target,
if (len < 5) {
#ifdef CONFIG_RETPOLINE
WARN_ONCE("Failing to patch indirect JMP in %ps\n", (void *)addr);
WARN_ONCE(1, "Failing to patch indirect JMP in %ps\n", (void *)addr);
#endif
return len; /* call too long for patch site */
}

4
arch/x86/kernel/topology.c
View File

@ -111,8 +111,10 @@ int arch_register_cpu(int num)
/*
* Currently CPU0 is only hotpluggable on Intel platforms. Other
* vendors can add hotplug support later.
* Xen PV guests don't support CPU0 hotplug at all.
*/
if (c->x86_vendor != X86_VENDOR_INTEL)
if (c->x86_vendor != X86_VENDOR_INTEL ||
boot_cpu_has(X86_FEATURE_XENPV))
cpu0_hotpluggable = 0;
/*

19
arch/x86/kernel/vmlinux.lds.S
View File

@ -65,6 +65,23 @@ jiffies_64 = jiffies;
#define ALIGN_ENTRY_TEXT_BEGIN . = ALIGN(PMD_SIZE);
#define ALIGN_ENTRY_TEXT_END . = ALIGN(PMD_SIZE);
/*
* This section contains data which will be mapped as decrypted. Memory
* encryption operates on a page basis. Make this section PMD-aligned
* to avoid splitting the pages while mapping the section early.
*
* Note: We use a separate section so that only this section gets
* decrypted to avoid exposing more than we wish.
*/
#define BSS_DECRYPTED \
. = ALIGN(PMD_SIZE); \
__start_bss_decrypted = .; \
*(.bss..decrypted); \
. = ALIGN(PAGE_SIZE); \
__start_bss_decrypted_unused = .; \
. = ALIGN(PMD_SIZE); \
__end_bss_decrypted = .; \
#else
#define X86_ALIGN_RODATA_BEGIN
@ -74,6 +91,7 @@ jiffies_64 = jiffies;
#define ALIGN_ENTRY_TEXT_BEGIN
#define ALIGN_ENTRY_TEXT_END
#define BSS_DECRYPTED
#endif
@ -355,6 +373,7 @@ SECTIONS
__bss_start = .;
*(.bss..page_aligned)
*(.bss)
BSS_DECRYPTED
. = ALIGN(PAGE_SIZE);
__bss_stop = .;
}

22
arch/x86/kvm/lapic.c
View File

@ -1344,9 +1344,8 @@ EXPORT_SYMBOL_GPL(kvm_lapic_reg_read);
static int apic_mmio_in_range(struct kvm_lapic *apic, gpa_t addr)
{
return kvm_apic_hw_enabled(apic) &&
addr >= apic->base_address &&
addr < apic->base_address + LAPIC_MMIO_LENGTH;
return addr >= apic->base_address &&
addr < apic->base_address + LAPIC_MMIO_LENGTH;
}
static int apic_mmio_read(struct kvm_vcpu *vcpu, struct kvm_io_device *this,
@ -1358,6 +1357,15 @@ static int apic_mmio_read(struct kvm_vcpu *vcpu, struct kvm_io_device *this,
if (!apic_mmio_in_range(apic, address))
return -EOPNOTSUPP;
if (!kvm_apic_hw_enabled(apic) || apic_x2apic_mode(apic)) {
if (!kvm_check_has_quirk(vcpu->kvm,
KVM_X86_QUIRK_LAPIC_MMIO_HOLE))
return -EOPNOTSUPP;
memset(data, 0xff, len);
return 0;
}
kvm_lapic_reg_read(apic, offset, len, data);
return 0;
@ -1917,6 +1925,14 @@ static int apic_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *this,
if (!apic_mmio_in_range(apic, address))
return -EOPNOTSUPP;
if (!kvm_apic_hw_enabled(apic) || apic_x2apic_mode(apic)) {
if (!kvm_check_has_quirk(vcpu->kvm,
KVM_X86_QUIRK_LAPIC_MMIO_HOLE))
return -EOPNOTSUPP;
return 0;
}
/*
* APIC register must be aligned on 128-bits boundary.
* 32/64/128 bits registers must be accessed thru 32 bits.

9
arch/x86/kvm/mmu.c
View File

@ -899,7 +899,7 @@ static void walk_shadow_page_lockless_end(struct kvm_vcpu *vcpu)
{
/*
* Make sure the write to vcpu->mode is not reordered in front of
* reads to sptes. If it does, kvm_commit_zap_page() can see us
* reads to sptes. If it does, kvm_mmu_commit_zap_page() can see us
* OUTSIDE_GUEST_MODE and proceed to free the shadow page table.
*/
smp_store_release(&vcpu->mode, OUTSIDE_GUEST_MODE);
@ -5417,7 +5417,12 @@ void kvm_mmu_setup(struct kvm_vcpu *vcpu)
{
MMU_WARN_ON(VALID_PAGE(vcpu->arch.mmu.root_hpa));
kvm_init_mmu(vcpu, true);
/*
* kvm_mmu_setup() is called only on vCPU initialization.
* Therefore, no need to reset mmu roots as they are not yet
* initialized.
*/
kvm_init_mmu(vcpu, false);
}
static void kvm_mmu_invalidate_zap_pages_in_memslot(struct kvm *kvm,

7
arch/x86/kvm/svm.c
View File

@ -1226,8 +1226,7 @@ static __init int sev_hardware_setup(void)
min_sev_asid = cpuid_edx(0x8000001F);
/* Initialize SEV ASID bitmap */
sev_asid_bitmap = kcalloc(BITS_TO_LONGS(max_sev_asid),
sizeof(unsigned long), GFP_KERNEL);
sev_asid_bitmap = bitmap_zalloc(max_sev_asid, GFP_KERNEL);
if (!sev_asid_bitmap)
return 1;
@ -1405,7 +1404,7 @@ static __exit void svm_hardware_unsetup(void)
int cpu;
if (svm_sev_enabled())
kfree(sev_asid_bitmap);
bitmap_free(sev_asid_bitmap);
for_each_possible_cpu(cpu)
svm_cpu_uninit(cpu);
@ -7149,6 +7148,8 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.check_intercept = svm_check_intercept,
.handle_external_intr = svm_handle_external_intr,
.request_immediate_exit = __kvm_request_immediate_exit,
.sched_in = svm_sched_in,
.pmu_ops = &amd_pmu_ops,

138
arch/x86/kvm/vmx.c
View File

@ -397,6 +397,7 @@ struct loaded_vmcs {
int cpu;
bool launched;
bool nmi_known_unmasked;
bool hv_timer_armed;
/* Support for vnmi-less CPUs */
int soft_vnmi_blocked;
ktime_t entry_time;
@ -1019,6 +1020,8 @@ struct vcpu_vmx {
int ple_window;
bool ple_window_dirty;
bool req_immediate_exit;
/* Support for PML */
#define PML_ENTITY_NUM 512
struct page *pml_pg;
@ -2864,6 +2867,8 @@ static void vmx_prepare_switch_to_guest(struct kvm_vcpu *vcpu)
u16 fs_sel, gs_sel;
int i;
vmx->req_immediate_exit = false;
if (vmx->loaded_cpu_state)
return;
@ -5393,9 +5398,10 @@ static int vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
* To use VMXON (and later other VMX instructions), a guest
* must first be able to turn on cr4.VMXE (see handle_vmon()).
* So basically the check on whether to allow nested VMX
* is here.
* is here. We operate under the default treatment of SMM,
* so VMX cannot be enabled under SMM.
*/
if (!nested_vmx_allowed(vcpu))
if (!nested_vmx_allowed(vcpu) || is_smm(vcpu))
return 1;
}
@ -6183,6 +6189,27 @@ static void vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
nested_mark_vmcs12_pages_dirty(vcpu);
}
static bool vmx_guest_apic_has_interrupt(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
void *vapic_page;
u32 vppr;
int rvi;
if (WARN_ON_ONCE(!is_guest_mode(vcpu)) ||
!nested_cpu_has_vid(get_vmcs12(vcpu)) ||
WARN_ON_ONCE(!vmx->nested.virtual_apic_page))
return false;
rvi = vmcs_read16(GUEST_INTR_STATUS) & 0xff;
vapic_page = kmap(vmx->nested.virtual_apic_page);
vppr = *((u32 *)(vapic_page + APIC_PROCPRI));
kunmap(vmx->nested.virtual_apic_page);
return ((rvi & 0xf0) > (vppr & 0xf0));
}
static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu,
bool nested)
{
@ -7966,6 +7993,9 @@ static __init int hardware_setup(void)
kvm_x86_ops->enable_log_dirty_pt_masked = NULL;
}
if (!cpu_has_vmx_preemption_timer())
kvm_x86_ops->request_immediate_exit = __kvm_request_immediate_exit;
if (cpu_has_vmx_preemption_timer() && enable_preemption_timer) {
u64 vmx_msr;
@ -9208,7 +9238,8 @@ static int handle_pml_full(struct kvm_vcpu *vcpu)
static int handle_preemption_timer(struct kvm_vcpu *vcpu)
{
kvm_lapic_expired_hv_timer(vcpu);
if (!to_vmx(vcpu)->req_immediate_exit)
kvm_lapic_expired_hv_timer(vcpu);
return 1;
}
@ -10595,24 +10626,43 @@ static void atomic_switch_perf_msrs(struct vcpu_vmx *vmx)
msrs[i].host, false);
}
static void vmx_arm_hv_timer(struct kvm_vcpu *vcpu)
static void vmx_arm_hv_timer(struct vcpu_vmx *vmx, u32 val)
{
vmcs_write32(VMX_PREEMPTION_TIMER_VALUE, val);
if (!vmx->loaded_vmcs->hv_timer_armed)
vmcs_set_bits(PIN_BASED_VM_EXEC_CONTROL,
PIN_BASED_VMX_PREEMPTION_TIMER);
vmx->loaded_vmcs->hv_timer_armed = true;
}
static void vmx_update_hv_timer(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
u64 tscl;
u32 delta_tsc;
if (vmx->hv_deadline_tsc == -1)
if (vmx->req_immediate_exit) {
vmx_arm_hv_timer(vmx, 0);
return;
}
tscl = rdtsc();
if (vmx->hv_deadline_tsc > tscl)
/* sure to be 32 bit only because checked on set_hv_timer */
delta_tsc = (u32)((vmx->hv_deadline_tsc - tscl) >>
cpu_preemption_timer_multi);
else
delta_tsc = 0;
if (vmx->hv_deadline_tsc != -1) {
tscl = rdtsc();
if (vmx->hv_deadline_tsc > tscl)
/* set_hv_timer ensures the delta fits in 32-bits */
delta_tsc = (u32)((vmx->hv_deadline_tsc - tscl) >>
cpu_preemption_timer_multi);
else
delta_tsc = 0;
vmcs_write32(VMX_PREEMPTION_TIMER_VALUE, delta_tsc);
vmx_arm_hv_timer(vmx, delta_tsc);
return;
}
if (vmx->loaded_vmcs->hv_timer_armed)
vmcs_clear_bits(PIN_BASED_VM_EXEC_CONTROL,
PIN_BASED_VMX_PREEMPTION_TIMER);
vmx->loaded_vmcs->hv_timer_armed = false;
}
static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
@ -10672,7 +10722,7 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
atomic_switch_perf_msrs(vmx);
vmx_arm_hv_timer(vcpu);
vmx_update_hv_timer(vcpu);
/*
* If this vCPU has touched SPEC_CTRL, restore the guest's value if
@ -11427,16 +11477,18 @@ static void vmx_start_preemption_timer(struct kvm_vcpu *vcpu)
u64 preemption_timeout = get_vmcs12(vcpu)->vmx_preemption_timer_value;
struct vcpu_vmx *vmx = to_vmx(vcpu);
if (vcpu->arch.virtual_tsc_khz == 0)
return;
/* Make sure short timeouts reliably trigger an immediate vmexit.
* hrtimer_start does not guarantee this. */
if (preemption_timeout <= 1) {
/*
* A timer value of zero is architecturally guaranteed to cause
* a VMExit prior to executing any instructions in the guest.
*/
if (preemption_timeout == 0) {
vmx_preemption_timer_fn(&vmx->nested.preemption_timer);
return;
}
if (vcpu->arch.virtual_tsc_khz == 0)
return;
preemption_timeout <<= VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE;
preemption_timeout *= 1000000;
do_div(preemption_timeout, vcpu->arch.virtual_tsc_khz);
@ -11646,11 +11698,15 @@ static int nested_vmx_check_apicv_controls(struct kvm_vcpu *vcpu,
* bits 15:8 should be zero in posted_intr_nv,
* the descriptor address has been already checked
* in nested_get_vmcs12_pages.
*
* bits 5:0 of posted_intr_desc_addr should be zero.
*/
if (nested_cpu_has_posted_intr(vmcs12) &&
(!nested_cpu_has_vid(vmcs12) ||
!nested_exit_intr_ack_set(vcpu) ||
vmcs12->posted_intr_nv & 0xff00))
(vmcs12->posted_intr_nv & 0xff00) ||
(vmcs12->posted_intr_desc_addr & 0x3f) ||
(!page_address_valid(vcpu, vmcs12->posted_intr_desc_addr))))
return -EINVAL;
/* tpr shadow is needed by all apicv features. */
@ -12076,11 +12132,10 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
exec_control = vmcs12->pin_based_vm_exec_control;
/* Preemption timer setting is only taken from vmcs01. */
exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
/* Preemption timer setting is computed directly in vmx_vcpu_run. */
exec_control |= vmcs_config.pin_based_exec_ctrl;
if (vmx->hv_deadline_tsc == -1)
exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
vmx->loaded_vmcs->hv_timer_armed = false;
/* Posted interrupts setting is only taken from vmcs12. */
if (nested_cpu_has_posted_intr(vmcs12)) {
@ -12318,6 +12373,9 @@ static int check_vmentry_prereqs(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
vmcs12->guest_activity_state != GUEST_ACTIVITY_HLT)
return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
if (nested_cpu_has_vpid(vmcs12) && !vmcs12->virtual_processor_id)
return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
if (nested_vmx_check_io_bitmap_controls(vcpu, vmcs12))
return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
@ -12863,6 +12921,11 @@ static int vmx_check_nested_events(struct kvm_vcpu *vcpu, bool external_intr)
return 0;
}
static void vmx_request_immediate_exit(struct kvm_vcpu *vcpu)
{
to_vmx(vcpu)->req_immediate_exit = true;
}
static u32 vmx_get_preemption_timer_value(struct kvm_vcpu *vcpu)
{
ktime_t remaining =
@ -13253,12 +13316,7 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, vmx->msr_autoload.host.nr);
vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
vmcs_write64(TSC_OFFSET, vcpu->arch.tsc_offset);
if (vmx->hv_deadline_tsc == -1)
vmcs_clear_bits(PIN_BASED_VM_EXEC_CONTROL,
PIN_BASED_VMX_PREEMPTION_TIMER);
else
vmcs_set_bits(PIN_BASED_VM_EXEC_CONTROL,
PIN_BASED_VMX_PREEMPTION_TIMER);
if (kvm_has_tsc_control)
decache_tsc_multiplier(vmx);
@ -13462,18 +13520,12 @@ static int vmx_set_hv_timer(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc)
return -ERANGE;
vmx->hv_deadline_tsc = tscl + delta_tsc;
vmcs_set_bits(PIN_BASED_VM_EXEC_CONTROL,
PIN_BASED_VMX_PREEMPTION_TIMER);
return delta_tsc == 0;
}
static void vmx_cancel_hv_timer(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
vmx->hv_deadline_tsc = -1;
vmcs_clear_bits(PIN_BASED_VM_EXEC_CONTROL,
PIN_BASED_VMX_PREEMPTION_TIMER);
to_vmx(vcpu)->hv_deadline_tsc = -1;
}
#endif
@ -13954,6 +14006,14 @@ static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
~(KVM_STATE_NESTED_SMM_GUEST_MODE | KVM_STATE_NESTED_SMM_VMXON))
return -EINVAL;
/*
* SMM temporarily disables VMX, so we cannot be in guest mode,
* nor can VMLAUNCH/VMRESUME be pending. Outside SMM, SMM flags
* must be zero.
*/
if (is_smm(vcpu) ? kvm_state->flags : kvm_state->vmx.smm.flags)
return -EINVAL;
if ((kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_GUEST_MODE) &&
!(kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_VMXON))
return -EINVAL;
@ -14097,6 +14157,7 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.apicv_post_state_restore = vmx_apicv_post_state_restore,
.hwapic_irr_update = vmx_hwapic_irr_update,
.hwapic_isr_update = vmx_hwapic_isr_update,
.guest_apic_has_interrupt = vmx_guest_apic_has_interrupt,
.sync_pir_to_irr = vmx_sync_pir_to_irr,
.deliver_posted_interrupt = vmx_deliver_posted_interrupt,
@ -14130,6 +14191,7 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.umip_emulated = vmx_umip_emulated,
.check_nested_events = vmx_check_nested_events,
.request_immediate_exit = vmx_request_immediate_exit,
.sched_in = vmx_sched_in,

101
arch/x86/kvm/x86.c
View File

@ -628,7 +628,7 @@ bool pdptrs_changed(struct kvm_vcpu *vcpu)
gfn_t gfn;
int r;
if (is_long_mode(vcpu) || !is_pae(vcpu))
if (is_long_mode(vcpu) || !is_pae(vcpu) || !is_paging(vcpu))
return false;
if (!test_bit(VCPU_EXREG_PDPTR,
@ -2537,7 +2537,6 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
break;
case MSR_PLATFORM_INFO:
if (!msr_info->host_initiated ||
data & ~MSR_PLATFORM_INFO_CPUID_FAULT ||
(!(data & MSR_PLATFORM_INFO_CPUID_FAULT) &&
cpuid_fault_enabled(vcpu)))
return 1;
@ -2780,6 +2779,9 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
msr_info->data = vcpu->arch.osvw.status;
break;
case MSR_PLATFORM_INFO:
if (!msr_info->host_initiated &&
!vcpu->kvm->arch.guest_can_read_msr_platform_info)
return 1;
msr_info->data = vcpu->arch.msr_platform_info;
break;
case MSR_MISC_FEATURES_ENABLES:
@ -2927,6 +2929,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_SPLIT_IRQCHIP:
case KVM_CAP_IMMEDIATE_EXIT:
case KVM_CAP_GET_MSR_FEATURES:
case KVM_CAP_MSR_PLATFORM_INFO:
r = 1;
break;
case KVM_CAP_SYNC_REGS:
@ -4007,19 +4010,23 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
break;
BUILD_BUG_ON(sizeof(user_data_size) != sizeof(user_kvm_nested_state->size));
r = -EFAULT;
if (get_user(user_data_size, &user_kvm_nested_state->size))
return -EFAULT;
break;
r = kvm_x86_ops->get_nested_state(vcpu, user_kvm_nested_state,
user_data_size);
if (r < 0)
return r;
break;
if (r > user_data_size) {
if (put_user(r, &user_kvm_nested_state->size))
return -EFAULT;
return -E2BIG;
r = -EFAULT;
else
r = -E2BIG;
break;
}
r = 0;
break;
}
@ -4031,19 +4038,21 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
if (!kvm_x86_ops->set_nested_state)
break;
r = -EFAULT;
if (copy_from_user(&kvm_state, user_kvm_nested_state, sizeof(kvm_state)))
return -EFAULT;
break;
r = -EINVAL;
if (kvm_state.size < sizeof(kvm_state))
return -EINVAL;
break;
if (kvm_state.flags &
~(KVM_STATE_NESTED_RUN_PENDING | KVM_STATE_NESTED_GUEST_MODE))
return -EINVAL;
break;
/* nested_run_pending implies guest_mode. */
if (kvm_state.flags == KVM_STATE_NESTED_RUN_PENDING)
return -EINVAL;
break;
r = kvm_x86_ops->set_nested_state(vcpu, user_kvm_nested_state, &kvm_state);
break;
@ -4350,6 +4359,10 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
kvm->arch.pause_in_guest = true;
r = 0;
break;
case KVM_CAP_MSR_PLATFORM_INFO:
kvm->arch.guest_can_read_msr_platform_info = cap->args[0];
r = 0;
break;
default:
r = -EINVAL;
break;
@ -7361,6 +7374,12 @@ void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu)
}
EXPORT_SYMBOL_GPL(kvm_vcpu_reload_apic_access_page);
void __kvm_request_immediate_exit(struct kvm_vcpu *vcpu)
{
smp_send_reschedule(vcpu->cpu);
}
EXPORT_SYMBOL_GPL(__kvm_request_immediate_exit);
/*
* Returns 1 to let vcpu_run() continue the guest execution loop without
* exiting to the userspace. Otherwise, the value will be returned to the
@ -7565,7 +7584,7 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
if (req_immediate_exit) {
kvm_make_request(KVM_REQ_EVENT, vcpu);
smp_send_reschedule(vcpu->cpu);
kvm_x86_ops->request_immediate_exit(vcpu);
}
trace_kvm_entry(vcpu->vcpu_id);
@ -7829,6 +7848,29 @@ static int complete_emulated_mmio(struct kvm_vcpu *vcpu)
return 0;
}
/* Swap (qemu) user FPU context for the guest FPU context. */
static void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
{
preempt_disable();
copy_fpregs_to_fpstate(&vcpu->arch.user_fpu);
/* PKRU is separately restored in kvm_x86_ops->run. */
__copy_kernel_to_fpregs(&vcpu->arch.guest_fpu.state,
~XFEATURE_MASK_PKRU);
preempt_enable();
trace_kvm_fpu(1);
}
/* When vcpu_run ends, restore user space FPU context. */
static void kvm_put_guest_fpu(struct kvm_vcpu *vcpu)
{
preempt_disable();
copy_fpregs_to_fpstate(&vcpu->arch.guest_fpu);
copy_kernel_to_fpregs(&vcpu->arch.user_fpu.state);
preempt_enable();
++vcpu->stat.fpu_reload;
trace_kvm_fpu(0);
}
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
int r;
@ -8177,7 +8219,7 @@ static int __set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
kvm_update_cpuid(vcpu);
idx = srcu_read_lock(&vcpu->kvm->srcu);
if (!is_long_mode(vcpu) && is_pae(vcpu)) {
if (!is_long_mode(vcpu) && is_pae(vcpu) && is_paging(vcpu)) {
load_pdptrs(vcpu, vcpu->arch.walk_mmu, kvm_read_cr3(vcpu));
mmu_reset_needed = 1;
}
@ -8406,29 +8448,6 @@ static void fx_init(struct kvm_vcpu *vcpu)
vcpu->arch.cr0 |= X86_CR0_ET;
}
/* Swap (qemu) user FPU context for the guest FPU context. */
void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
{
preempt_disable();
copy_fpregs_to_fpstate(&vcpu->arch.user_fpu);
/* PKRU is separately restored in kvm_x86_ops->run. */
__copy_kernel_to_fpregs(&vcpu->arch.guest_fpu.state,
~XFEATURE_MASK_PKRU);
preempt_enable();
trace_kvm_fpu(1);
}
/* When vcpu_run ends, restore user space FPU context. */
void kvm_put_guest_fpu(struct kvm_vcpu *vcpu)
{
preempt_disable();
copy_fpregs_to_fpstate(&vcpu->arch.guest_fpu);
copy_kernel_to_fpregs(&vcpu->arch.user_fpu.state);
preempt_enable();
++vcpu->stat.fpu_reload;
trace_kvm_fpu(0);
}
void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
{
void *wbinvd_dirty_mask = vcpu->arch.wbinvd_dirty_mask;
@ -8852,6 +8871,8 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
kvm->arch.kvmclock_offset = -ktime_get_boot_ns();
pvclock_update_vm_gtod_copy(kvm);
kvm->arch.guest_can_read_msr_platform_info = true;
INIT_DELAYED_WORK(&kvm->arch.kvmclock_update_work, kvmclock_update_fn);
INIT_DELAYED_WORK(&kvm->arch.kvmclock_sync_work, kvmclock_sync_fn);
@ -9200,6 +9221,13 @@ void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
kvm_page_track_flush_slot(kvm, slot);
}
static inline bool kvm_guest_apic_has_interrupt(struct kvm_vcpu *vcpu)
{
return (is_guest_mode(vcpu) &&
kvm_x86_ops->guest_apic_has_interrupt &&
kvm_x86_ops->guest_apic_has_interrupt(vcpu));
}
static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)
{
if (!list_empty_careful(&vcpu->async_pf.done))
@ -9224,7 +9252,8 @@ static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)
return true;
if (kvm_arch_interrupt_allowed(vcpu) &&
kvm_cpu_has_interrupt(vcpu))
(kvm_cpu_has_interrupt(vcpu) ||
kvm_guest_apic_has_interrupt(vcpu)))
return true;
if (kvm_hv_has_stimer_pending(vcpu))

4
arch/x86/mm/init.c
View File

@ -815,10 +815,14 @@ void free_kernel_image_pages(void *begin, void *end)
set_memory_np_noalias(begin_ul, len_pages);
}
void __weak mem_encrypt_free_decrypted_mem(void) { }
void __ref free_initmem(void)
{
e820__reallocate_tables();
mem_encrypt_free_decrypted_mem();
free_kernel_image_pages(&__init_begin, &__init_end);
}

24
arch/x86/mm/mem_encrypt.c
View File

@ -348,6 +348,30 @@ bool sev_active(void)
EXPORT_SYMBOL(sev_active);
/* Architecture __weak replacement functions */
void __init mem_encrypt_free_decrypted_mem(void)
{
unsigned long vaddr, vaddr_end, npages;
int r;
vaddr = (unsigned long)__start_bss_decrypted_unused;
vaddr_end = (unsigned long)__end_bss_decrypted;
npages = (vaddr_end - vaddr) >> PAGE_SHIFT;
/*
* The unused memory range was mapped decrypted, change the encryption
* attribute from decrypted to encrypted before freeing it.
*/
if (mem_encrypt_active()) {
r = set_memory_encrypted(vaddr, npages);
if (r) {
pr_warn("failed to free unused decrypted pages\n");
return;
}
}
free_init_pages("unused decrypted", vaddr, vaddr_end);
}
void __init mem_encrypt_init(void)
{
if (!sme_me_mask)

9
arch/x86/mm/pgtable.c
View File

@ -637,6 +637,15 @@ void __native_set_fixmap(enum fixed_addresses idx, pte_t pte)
{
unsigned long address = __fix_to_virt(idx);
#ifdef CONFIG_X86_64
/*
* Ensure that the static initial page tables are covering the
* fixmap completely.
*/
BUILD_BUG_ON(__end_of_permanent_fixed_addresses >
(FIXMAP_PMD_NUM * PTRS_PER_PTE));
#endif
if (idx >= __end_of_fixed_addresses) {
BUG();
return;

3
arch/x86/platform/efi/efi_32.c
View File

@ -85,10 +85,9 @@ pgd_t * __init efi_call_phys_prolog(void)
void __init efi_call_phys_epilog(pgd_t *save_pgd)
{
load_fixmap_gdt(0);
load_cr3(save_pgd);
__flush_tlb_all();
load_fixmap_gdt(0);
}
void __init efi_runtime_update_mappings(void)

8
arch/x86/xen/mmu_pv.c
View File

@ -1907,7 +1907,7 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn)
/* L3_k[511] -> level2_fixmap_pgt */
convert_pfn_mfn(level3_kernel_pgt);
/* L3_k[511][506] -> level1_fixmap_pgt */
/* L3_k[511][508-FIXMAP_PMD_NUM ... 507] -> level1_fixmap_pgt */
convert_pfn_mfn(level2_fixmap_pgt);
/* We get [511][511] and have Xen's version of level2_kernel_pgt */
@ -1952,7 +1952,11 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn)
set_page_prot(level2_ident_pgt, PAGE_KERNEL_RO);
set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO);
set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO);
set_page_prot(level1_fixmap_pgt, PAGE_KERNEL_RO);
for (i = 0; i < FIXMAP_PMD_NUM; i++) {
set_page_prot(level1_fixmap_pgt + i * PTRS_PER_PTE,
PAGE_KERNEL_RO);
}
/* Pin down new L4 */
pin_pagetable_pfn(MMUEXT_PIN_L4_TABLE,

2
arch/x86/xen/pmu.c
View File

@ -478,7 +478,7 @@ static void xen_convert_regs(const struct xen_pmu_regs *xen_regs,
irqreturn_t xen_pmu_irq_handler(int irq, void *dev_id)
{
int err, ret = IRQ_NONE;
struct pt_regs regs;
struct pt_regs regs = {0};
const struct xen_pmu_data *xenpmu_data = get_xenpmu_data();
uint8_t xenpmu_flags = get_xenpmu_flags();

1
arch/xtensa/Kconfig
View File

@ -4,6 +4,7 @@ config ZONE_DMA
config XTENSA
def_bool y
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_NO_COHERENT_DMA_MMAP if !MMU

4
arch/xtensa/Makefile
View File

@ -64,11 +64,7 @@ endif
vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
ifeq ($(KBUILD_SRC),)
KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
else
KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
endif
KBUILD_DEFCONFIG := iss_defconfig

25
arch/xtensa/platforms/iss/setup.c
View File

@ -78,23 +78,28 @@ static struct notifier_block iss_panic_block = {
void __init platform_setup(char **p_cmdline)
{
static void *argv[COMMAND_LINE_SIZE / sizeof(void *)] __initdata;
static char cmdline[COMMAND_LINE_SIZE] __initdata;
int argc = simc_argc();
int argv_size = simc_argv_size();
if (argc > 1) {
void **argv = alloc_bootmem(argv_size);
char *cmdline = alloc_bootmem(argv_size);
int i;
if (argv_size > sizeof(argv)) {
pr_err("%s: command line too long: argv_size = %d\n",
__func__, argv_size);
} else {
int i;
cmdline[0] = 0;
simc_argv((void *)argv);
cmdline[0] = 0;
simc_argv((void *)argv);
for (i = 1; i < argc; ++i) {
if (i > 1)
strcat(cmdline, " ");
strcat(cmdline, argv[i]);
for (i = 1; i < argc; ++i) {
if (i > 1)
strcat(cmdline, " ");
strcat(cmdline, argv[i]);
}
*p_cmdline = cmdline;
}
*p_cmdline = cmdline;
}
atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);

2
block/bio.c
View File

@ -1684,7 +1684,7 @@ void generic_end_io_acct(struct request_queue *q, int req_op,
const int sgrp = op_stat_group(req_op);
int cpu = part_stat_lock();
part_stat_add(cpu, part, ticks[sgrp], duration);
part_stat_add(cpu, part, nsecs[sgrp], jiffies_to_nsecs(duration));
part_round_stats(q, cpu, part);
part_dec_in_flight(q, part, op_is_write(req_op));

4
block/blk-cgroup.c
View File

@ -1510,8 +1510,10 @@ int blkcg_policy_register(struct blkcg_policy *pol)
for (i = 0; i < BLKCG_MAX_POLS; i++)
if (!blkcg_policy[i])
break;
if (i >= BLKCG_MAX_POLS)
if (i >= BLKCG_MAX_POLS) {
pr_warn("blkcg_policy_register: BLKCG_MAX_POLS too small\n");
goto err_unlock;
}
/* Make sure cpd/pd_alloc_fn and cpd/pd_free_fn in pairs */
if ((!pol->cpd_alloc_fn ^ !pol->cpd_free_fn) ||

4
block/blk-core.c
View File

@ -2733,17 +2733,15 @@ void blk_account_io_done(struct request *req, u64 now)
* containing request is enough.
*/
if (blk_do_io_stat(req) && !(req->rq_flags & RQF_FLUSH_SEQ)) {
unsigned long duration;
const int sgrp = op_stat_group(req_op(req));
struct hd_struct *part;
int cpu;
duration = nsecs_to_jiffies(now - req->start_time_ns);
cpu = part_stat_lock();
part = req->part;
part_stat_inc(cpu, part, ios[sgrp]);
part_stat_add(cpu, part, ticks[sgrp], duration);
part_stat_add(cpu, part, nsecs[sgrp], now - req->start_time_ns);
part_round_stats(req->q, cpu, part);
part_dec_in_flight(req->q, part, rq_data_dir(req));

13
block/blk-mq-tag.c
View File

@ -322,16 +322,11 @@ void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_iter_fn *fn,
/*
* __blk_mq_update_nr_hw_queues will update the nr_hw_queues and
* queue_hw_ctx after freeze the queue. So we could use q_usage_counter
* to avoid race with it. __blk_mq_update_nr_hw_queues will users
* synchronize_rcu to ensure all of the users go out of the critical
* section below and see zeroed q_usage_counter.
* queue_hw_ctx after freeze the queue, so we use q_usage_counter
* to avoid race with it.
*/
rcu_read_lock();
if (percpu_ref_is_zero(&q->q_usage_counter)) {
rcu_read_unlock();
if (!percpu_ref_tryget(&q->q_usage_counter))
return;
}
queue_for_each_hw_ctx(q, hctx, i) {
struct blk_mq_tags *tags = hctx->tags;
@ -347,7 +342,7 @@ void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_iter_fn *fn,
bt_for_each(hctx, &tags->breserved_tags, fn, priv, true);
bt_for_each(hctx, &tags->bitmap_tags, fn, priv, false);
}
rcu_read_unlock();
blk_queue_exit(q);
}
static int bt_alloc(struct sbitmap_queue *bt, unsigned int depth,

4
block/blk-mq.c
View File

@ -1628,7 +1628,7 @@ void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule)
BUG_ON(!rq->q);
if (rq->mq_ctx != this_ctx) {
if (this_ctx) {
trace_block_unplug(this_q, depth, from_schedule);
trace_block_unplug(this_q, depth, !from_schedule);
blk_mq_sched_insert_requests(this_q, this_ctx,
&ctx_list,
from_schedule);
@ -1648,7 +1648,7 @@ void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule)
* on 'ctx_list'. Do those.
*/
if (this_ctx) {
trace_block_unplug(this_q, depth, from_schedule);
trace_block_unplug(this_q, depth, !from_schedule);
blk_mq_sched_insert_requests(this_q, this_ctx, &ctx_list,
from_schedule);
}

2
block/elevator.c
View File

@ -609,7 +609,7 @@ void elv_drain_elevator(struct request_queue *q)
while (e->type->ops.sq.elevator_dispatch_fn(q, 1))
;
if (q->nr_sorted && printed++ < 10) {
if (q->nr_sorted && !blk_queue_is_zoned(q) && printed++ < 10 ) {
printk(KERN_ERR "%s: forced dispatching is broken "
"(nr_sorted=%u), please report this\n",
q->elevator->type->elevator_name, q->nr_sorted);

6
block/genhd.c
View File

@ -1343,18 +1343,18 @@ static int diskstats_show(struct seq_file *seqf, void *v)
part_stat_read(hd, ios[STAT_READ]),
part_stat_read(hd, merges[STAT_READ]),
part_stat_read(hd, sectors[STAT_READ]),
jiffies_to_msecs(part_stat_read(hd, ticks[STAT_READ])),
(unsigned int)part_stat_read_msecs(hd, STAT_READ),
part_stat_read(hd, ios[STAT_WRITE]),
part_stat_read(hd, merges[STAT_WRITE]),
part_stat_read(hd, sectors[STAT_WRITE]),
jiffies_to_msecs(part_stat_read(hd, ticks[STAT_WRITE])),
(unsigned int)part_stat_read_msecs(hd, STAT_WRITE),
inflight[0],
jiffies_to_msecs(part_stat_read(hd, io_ticks)),
jiffies_to_msecs(part_stat_read(hd, time_in_queue)),
part_stat_read(hd, ios[STAT_DISCARD]),
part_stat_read(hd, merges[STAT_DISCARD]),
part_stat_read(hd, sectors[STAT_DISCARD]),
jiffies_to_msecs(part_stat_read(hd, ticks[STAT_DISCARD]))
(unsigned int)part_stat_read_msecs(hd, STAT_DISCARD)
);
}
disk_part_iter_exit(&piter);

6
block/partition-generic.c
View File

@ -136,18 +136,18 @@ ssize_t part_stat_show(struct device *dev,
part_stat_read(p, ios[STAT_READ]),
part_stat_read(p, merges[STAT_READ]),
(unsigned long long)part_stat_read(p, sectors[STAT_READ]),
jiffies_to_msecs(part_stat_read(p, ticks[STAT_READ])),
(unsigned int)part_stat_read_msecs(p, STAT_READ),
part_stat_read(p, ios[STAT_WRITE]),
part_stat_read(p, merges[STAT_WRITE]),
(unsigned long long)part_stat_read(p, sectors[STAT_WRITE]),
jiffies_to_msecs(part_stat_read(p, ticks[STAT_WRITE])),
(unsigned int)part_stat_read_msecs(p, STAT_WRITE),
inflight[0],
jiffies_to_msecs(part_stat_read(p, io_ticks)),
jiffies_to_msecs(part_stat_read(p, time_in_queue)),
part_stat_read(p, ios[STAT_DISCARD]),
part_stat_read(p, merges[STAT_DISCARD]),
(unsigned long long)part_stat_read(p, sectors[STAT_DISCARD]),
jiffies_to_msecs(part_stat_read(p, ticks[STAT_DISCARD])));
(unsigned int)part_stat_read_msecs(p, STAT_DISCARD));
}
ssize_t part_inflight_show(struct device *dev, struct device_attribute *attr,

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