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Merge branch 'master' into for-4.9

This commit is contained in:
Tejun Heo 2016-09-06 12:35:56 -04:00
parent 7d36dd00ab bc4dee5aa7
commit 2536524a91
1047 changed files with 11984 additions and 5885 deletions
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2
.mailmap
View File

@ -158,6 +158,8 @@ Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Viresh Kumar <vireshk@kernel.org> <viresh.kumar@st.com>
Viresh Kumar <vireshk@kernel.org> <viresh.linux@gmail.com>
Viresh Kumar <vireshk@kernel.org> <viresh.kumar2@arm.com>
Vladimir Davydov <vdavydov.dev@gmail.com> <vdavydov@virtuozzo.com>
Vladimir Davydov <vdavydov.dev@gmail.com> <vdavydov@parallels.com>
Takashi YOSHII <takashi.yoshii.zj@renesas.com>
Yusuke Goda <goda.yusuke@renesas.com>
Gustavo Padovan <gustavo@las.ic.unicamp.br>

2
Documentation/ABI/stable/sysfs-devices
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@ -1,7 +1,7 @@
# Note: This documents additional properties of any device beyond what
# is documented in Documentation/sysfs-rules.txt
What: /sys/devices/*/of_path
What: /sys/devices/*/of_node
Date: February 2015
Contact: Device Tree mailing list <devicetree@vger.kernel.org>
Description:

24
Documentation/PCI/MSI-HOWTO.txt
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@ -94,14 +94,11 @@ has a requirements for a minimum number of vectors the driver can pass a
min_vecs argument set to this limit, and the PCI core will return -ENOSPC
if it can't meet the minimum number of vectors.
The flags argument should normally be set to 0, but can be used to pass the
PCI_IRQ_NOMSI and PCI_IRQ_NOMSIX flag in case a device claims to support
MSI or MSI-X, but the support is broken, or to pass PCI_IRQ_NOLEGACY in
case the device does not support legacy interrupt lines.
By default this function will spread the interrupts around the available
CPUs, but this feature can be disabled by passing the PCI_IRQ_NOAFFINITY
flag.
The flags argument is used to specify which type of interrupt can be used
by the device and the driver (PCI_IRQ_LEGACY, PCI_IRQ_MSI, PCI_IRQ_MSIX).
A convenient short-hand (PCI_IRQ_ALL_TYPES) is also available to ask for
any possible kind of interrupt. If the PCI_IRQ_AFFINITY flag is set,
pci_alloc_irq_vectors() will spread the interrupts around the available CPUs.
To get the Linux IRQ numbers passed to request_irq() and free_irq() and the
vectors, use the following function:
@ -131,7 +128,7 @@ larger than the number supported by the device it will automatically be
capped to the supported limit, so there is no need to query the number of
vectors supported beforehand:
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, 0);
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_ALL_TYPES)
if (nvec < 0)
goto out_err;
@ -140,7 +137,7 @@ interrupts it can request a particular number of interrupts by passing that
number to pci_alloc_irq_vectors() function as both 'min_vecs' and
'max_vecs' parameters:
ret = pci_alloc_irq_vectors(pdev, nvec, nvec, 0);
ret = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_ALL_TYPES);
if (ret < 0)
goto out_err;
@ -148,15 +145,14 @@ The most notorious example of the request type described above is enabling
the single MSI mode for a device. It could be done by passing two 1s as
'min_vecs' and 'max_vecs':
ret = pci_alloc_irq_vectors(pdev, 1, 1, 0);
ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
if (ret < 0)
goto out_err;
Some devices might not support using legacy line interrupts, in which case
the PCI_IRQ_NOLEGACY flag can be used to fail the request if the platform
can't provide MSI or MSI-X interrupts:
the driver can specify that only MSI or MSI-X is acceptable:
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_NOLEGACY);
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_MSI | PCI_IRQ_MSIX);
if (nvec < 0)
goto out_err;

1
Documentation/PCI/pci.txt
View File

@ -124,7 +124,6 @@ initialization with a pointer to a structure describing the driver
The ID table is an array of struct pci_device_id entries ending with an
all-zero entry. Definitions with static const are generally preferred.
Use of the deprecated macro DEFINE_PCI_DEVICE_TABLE should be avoided.
Each entry consists of:

1
Documentation/arm64/silicon-errata.txt
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@ -53,6 +53,7 @@ stable kernels.
| ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_832075 |
| ARM | Cortex-A57 | #852523 | N/A |
| ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_834220 |
| ARM | Cortex-A72 | #853709 | N/A |
| ARM | MMU-500 | #841119,#826419 | N/A |
| | | | |
| Cavium | ThunderX ITS | #22375, #24313 | CAVIUM_ERRATUM_22375 |

18
Documentation/block/queue-sysfs.txt
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@ -14,6 +14,12 @@ add_random (RW)
This file allows to turn off the disk entropy contribution. Default
value of this file is '1'(on).
dax (RO)
--------
This file indicates whether the device supports Direct Access (DAX),
used by CPU-addressable storage to bypass the pagecache. It shows '1'
if true, '0' if not.
discard_granularity (RO)
-----------------------
This shows the size of internal allocation of the device in bytes, if
@ -46,6 +52,12 @@ hw_sector_size (RO)
-------------------
This is the hardware sector size of the device, in bytes.
io_poll (RW)
------------
When read, this file shows the total number of block IO polls and how
many returned success. Writing '0' to this file will disable polling
for this device. Writing any non-zero value will enable this feature.
iostats (RW)
-------------
This file is used to control (on/off) the iostats accounting of the
@ -151,5 +163,11 @@ device state. This means that it might not be safe to toggle the
setting from "write back" to "write through", since that will also
eliminate cache flushes issued by the kernel.
write_same_max_bytes (RO)
-------------------------
This is the number of bytes the device can write in a single write-same
command. A value of '0' means write-same is not supported by this
device.
Jens Axboe <jens.axboe@oracle.com>, February 2009

2
Documentation/conf.py
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@ -131,7 +131,7 @@ pygments_style = 'sphinx'
todo_include_todos = False
primary_domain = 'C'
highlight_language = 'C'
highlight_language = 'guess'
# -- Options for HTML output ----------------------------------------------

7
Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
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@ -16,6 +16,11 @@ Required properties:
- vref-supply: The regulator supply ADC reference voltage.
- #io-channel-cells: Should be 1, see ../iio-bindings.txt
Optional properties:
- resets: Must contain an entry for each entry in reset-names if need support
this option. See ../reset/reset.txt for details.
- reset-names: Must include the name "saradc-apb".
Example:
saradc: saradc@2006c000 {
compatible = "rockchip,saradc";
@ -23,6 +28,8 @@ Example:
interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
clock-names = "saradc", "apb_pclk";
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
#io-channel-cells = <1>;
vref-supply = <&vcc18>;
};

19
Documentation/devicetree/bindings/serial/8250.txt
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@ -42,9 +42,6 @@ Optional properties:
- auto-flow-control: one way to enable automatic flow control support. The
driver is allowed to detect support for the capability even without this
property.
- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD
line respectively. It will use specified GPIO instead of the peripheral
function pin for the UART feature. If unsure, don't specify this property.
Note:
* fsl,ns16550:
@ -66,19 +63,3 @@ Example:
interrupts = <10>;
reg-shift = <2>;
};
Example for OMAP UART using GPIO-based modem control signals:
uart4: serial@49042000 {
compatible = "ti,omap3-uart";
reg = <0x49042000 0x400>;
interrupts = <80>;
ti,hwmods = "uart4";
clock-frequency = <48000000>;
cts-gpios = <&gpio3 5 GPIO_ACTIVE_LOW>;
rts-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>;
dtr-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
dsr-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>;
dcd-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
rng-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
};

10
Documentation/devicetree/bindings/sound/omap-mcpdm.txt
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@ -8,8 +8,6 @@ Required properties:
- interrupts: Interrupt number for McPDM
- interrupt-parent: The parent interrupt controller
- ti,hwmods: Name of the hwmod associated to the McPDM
- clocks: phandle for the pdmclk provider, likely <&twl6040>
- clock-names: Must be "pdmclk"
Example:
@ -21,11 +19,3 @@ mcpdm: mcpdm@40132000 {
interrupt-parent = <&gic>;
ti,hwmods = "mcpdm";
};
In board DTS file the pdmclk needs to be added:
&mcpdm {
clocks = <&twl6040>;
clock-names = "pdmclk";
status = "okay";
};

10
Documentation/devicetree/bindings/thermal/thermal.txt
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@ -62,7 +62,7 @@ For more examples of cooling devices, refer to the example sections below.
Required properties:
- #cooling-cells: Used to provide cooling device specific information
Type: unsigned while referring to it. Must be at least 2, in order
Size: one cell to specify minimum and maximum cooling state used
Size: one cell to specify minimum and maximum cooling state used
in the reference. The first cell is the minimum
cooling state requested and the second cell is
the maximum cooling state requested in the reference.
@ -119,7 +119,7 @@ Required properties:
Optional property:
- contribution: The cooling contribution to the thermal zone of the
Type: unsigned referred cooling device at the referred trip point.
Size: one cell The contribution is a ratio of the sum
Size: one cell The contribution is a ratio of the sum
of all cooling contributions within a thermal zone.
Note: Using the THERMAL_NO_LIMIT (-1UL) constant in the cooling-device phandle
@ -145,7 +145,7 @@ Required properties:
Size: one cell
- thermal-sensors: A list of thermal sensor phandles and sensor specifier
Type: list of used while monitoring the thermal zone.
Type: list of used while monitoring the thermal zone.
phandles + sensor
specifier
@ -473,7 +473,7 @@ thermal-zones {
<&adc>; /* pcb north */
/* hotspot = 100 * bandgap - 120 * adc + 484 */
coefficients = <100 -120 484>;
coefficients = <100 -120 484>;
trips {
...
@ -502,7 +502,7 @@ from the ADC sensor. The binding would be then:
thermal-sensors = <&adc>;
/* hotspot = 1 * adc + 6000 */
coefficients = <1 6000>;
coefficients = <1 6000>;
(d) - Board thermal

8
Documentation/filesystems/overlayfs.txt
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@ -183,12 +183,10 @@ The copy_up operation essentially creates a new, identical file and
moves it over to the old name. The new file may be on a different
filesystem, so both st_dev and st_ino of the file may change.
Any open files referring to this inode will access the old data and
metadata. Similarly any file locks obtained before copy_up will not
apply to the copied up file.
Any open files referring to this inode will access the old data.
On a file opened with O_RDONLY fchmod(2), fchown(2), futimesat(2) and
fsetxattr(2) will fail with EROFS.
Any file locks (and leases) obtained before copy_up will not apply
to the copied up file.
If a file with multiple hard links is copied up, then this will
"break" the link. Changes will not be propagated to other names

4
Documentation/hwmon/ftsteutates
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@ -19,5 +19,5 @@ enhancements. It can monitor up to 4 voltages, 16 temperatures and
implemented in this driver.
Specification of the chip can be found here:
ftp:///pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/BMC-Teutates_Specification_V1.21.pdf
ftp:///pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/Fujitsu_mainboards-1-Sensors_HowTo-en-US.pdf
ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/BMC-Teutates_Specification_V1.21.pdf
ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/Fujitsu_mainboards-1-Sensors_HowTo-en-US.pdf

6
Documentation/kernel-documentation.rst
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@ -366,8 +366,6 @@ Domain`_ references.
Cross-referencing from reStructuredText
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. highlight:: none
To cross-reference the functions and types defined in the kernel-doc comments
from reStructuredText documents, please use the `Sphinx C Domain`_
references. For example::
@ -390,8 +388,6 @@ For further details, please refer to the `Sphinx C Domain`_ documentation.
Function documentation
----------------------
.. highlight:: c
The general format of a function and function-like macro kernel-doc comment is::
/**
@ -572,8 +568,6 @@ DocBook XML [DEPRECATED]
Converting DocBook to Sphinx
----------------------------
.. highlight:: none
Over time, we expect all of the documents under ``Documentation/DocBook`` to be
converted to Sphinx and reStructuredText. For most DocBook XML documents, a good
enough solution is to use the simple ``Documentation/sphinx/tmplcvt`` script,

4
Documentation/kernel-parameters.txt
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@ -3032,6 +3032,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
PAGE_SIZE is used as alignment.
PCI-PCI bridge can be specified, if resource
windows need to be expanded.
To specify the alignment for several
instances of a device, the PCI vendor,
device, subvendor, and subdevice may be
specified, e.g., 4096@pci:8086:9c22:103c:198f
ecrc= Enable/disable PCIe ECRC (transaction layer
end-to-end CRC checking).
bios: Use BIOS/firmware settings. This is the

20
Documentation/networking/dsa/dsa.txt
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@ -587,26 +587,6 @@ of DSA, would be the its port-based VLAN, used by the associated bridge device.
TODO
====
The platform device problem
---------------------------
DSA is currently implemented as a platform device driver which is far from ideal
as was discussed in this thread:
http://permalink.gmane.org/gmane.linux.network/329848
This basically prevents the device driver model to be properly used and applied,
and support non-MDIO, non-MMIO Ethernet connected switches.
Another problem with the platform device driver approach is that it prevents the
use of a modular switch drivers build due to a circular dependency, illustrated
here:
http://comments.gmane.org/gmane.linux.network/345803
Attempts of reworking this has been done here:
https://lwn.net/Articles/643149/
Making SWITCHDEV and DSA converge towards an unified codebase
-------------------------------------------------------------

21
Documentation/networking/rxrpc.txt
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@ -790,13 +790,12 @@ The kernel interface functions are as follows:
Data messages can have their contents extracted with the usual bunch of
socket buffer manipulation functions. A data message can be determined to
be the last one in a sequence with rxrpc_kernel_is_data_last(). When a
data message has been used up, rxrpc_kernel_data_delivered() should be
called on it..
data message has been used up, rxrpc_kernel_data_consumed() should be
called on it.
Non-data messages should be handled to rxrpc_kernel_free_skb() to dispose
of. It is possible to get extra refs on all types of message for later
freeing, but this may pin the state of a call until the message is finally
freed.
Messages should be handled to rxrpc_kernel_free_skb() to dispose of. It
is possible to get extra refs on all types of message for later freeing,
but this may pin the state of a call until the message is finally freed.
(*) Accept an incoming call.
@ -821,12 +820,14 @@ The kernel interface functions are as follows:
Other errors may be returned if the call had been aborted (-ECONNABORTED)
or had timed out (-ETIME).
(*) Record the delivery of a data message and free it.
(*) Record the delivery of a data message.
void rxrpc_kernel_data_delivered(struct sk_buff *skb);
void rxrpc_kernel_data_consumed(struct rxrpc_call *call,
struct sk_buff *skb);
This is used to record a data message as having been delivered and to
update the ACK state for the call. The socket buffer will be freed.
This is used to record a data message as having been consumed and to
update the ACK state for the call. The message must still be passed to
rxrpc_kernel_free_skb() for disposal by the caller.
(*) Free a message.

27
Documentation/power/basic-pm-debugging.txt
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@ -164,7 +164,32 @@ load n/2 modules more and try again.
Again, if you find the offending module(s), it(they) must be unloaded every time
before hibernation, and please report the problem with it(them).
c) Advanced debugging
c) Using the "test_resume" hibernation option
/sys/power/disk generally tells the kernel what to do after creating a
hibernation image. One of the available options is "test_resume" which
causes the just created image to be used for immediate restoration. Namely,
after doing:
# echo test_resume > /sys/power/disk
# echo disk > /sys/power/state
a hibernation image will be created and a resume from it will be triggered
immediately without involving the platform firmware in any way.
That test can be used to check if failures to resume from hibernation are
related to bad interactions with the platform firmware. That is, if the above
works every time, but resume from actual hibernation does not work or is
unreliable, the platform firmware may be responsible for the failures.
On architectures and platforms that support using different kernels to restore
hibernation images (that is, the kernel used to read the image from storage and
load it into memory is different from the one included in the image) or support
kernel address space randomization, it also can be used to check if failures
to resume may be related to the differences between the restore and image
kernels.
d) Advanced debugging
In case that hibernation does not work on your system even in the minimal
configuration and compiling more drivers as modules is not practical or some

117
Documentation/power/interface.txt
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@ -1,75 +1,76 @@
Power Management Interface
Power Management Interface for System Sleep
Copyright (c) 2016 Intel Corp., Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The power management subsystem provides a unified sysfs interface to
userspace, regardless of what architecture or platform one is
running. The interface exists in /sys/power/ directory (assuming sysfs
is mounted at /sys).
The power management subsystem provides userspace with a unified sysfs interface
for system sleep regardless of the underlying system architecture or platform.
The interface is located in the /sys/power/ directory (assuming that sysfs is
mounted at /sys).
/sys/power/state controls system power state. Reading from this file
returns what states are supported, which is hard-coded to 'freeze',
'standby' (Power-On Suspend), 'mem' (Suspend-to-RAM), and 'disk'
(Suspend-to-Disk).
/sys/power/state is the system sleep state control file.
Writing to this file one of those strings causes the system to
transition into that state. Please see the file
Documentation/power/states.txt for a description of each of those
states.
Reading from it returns a list of supported sleep states, encoded as:
'freeze' (Suspend-to-Idle)
'standby' (Power-On Suspend)
'mem' (Suspend-to-RAM)
'disk' (Suspend-to-Disk)
/sys/power/disk controls the operating mode of the suspend-to-disk
mechanism. Suspend-to-disk can be handled in several ways. We have a
few options for putting the system to sleep - using the platform driver
(e.g. ACPI or other suspend_ops), powering off the system or rebooting the
system (for testing).
Suspend-to-Idle is always supported. Suspend-to-Disk is always supported
too as long the kernel has been configured to support hibernation at all
(ie. CONFIG_HIBERNATION is set in the kernel configuration file). Support
for Suspend-to-RAM and Power-On Suspend depends on the capabilities of the
platform.
Additionally, /sys/power/disk can be used to turn on one of the two testing
modes of the suspend-to-disk mechanism: 'testproc' or 'test'. If the
suspend-to-disk mechanism is in the 'testproc' mode, writing 'disk' to
/sys/power/state will cause the kernel to disable nonboot CPUs and freeze
tasks, wait for 5 seconds, unfreeze tasks and enable nonboot CPUs. If it is
in the 'test' mode, writing 'disk' to /sys/power/state will cause the kernel
to disable nonboot CPUs and freeze tasks, shrink memory, suspend devices, wait
for 5 seconds, resume devices, unfreeze tasks and enable nonboot CPUs. Then,
we are able to look in the log messages and work out, for example, which code
is being slow and which device drivers are misbehaving.
If one of the strings listed in /sys/power/state is written to it, the system
will attempt to transition into the corresponding sleep state. Refer to
Documentation/power/states.txt for a description of each of those states.
Reading from this file will display all supported modes and the currently
selected one in brackets, for example
/sys/power/disk controls the operating mode of hibernation (Suspend-to-Disk).
Specifically, it tells the kernel what to do after creating a hibernation image.
[shutdown] reboot test testproc
Reading from it returns a list of supported options encoded as:
Writing to this file will accept one of
'platform' (put the system into sleep using a platform-provided method)
'shutdown' (shut the system down)
'reboot' (reboot the system)
'suspend' (trigger a Suspend-to-RAM transition)
'test_resume' (resume-after-hibernation test mode)
'platform' (only if the platform supports it)
'shutdown'
'reboot'
'testproc'
'test'
The currently selected option is printed in square brackets.
/sys/power/image_size controls the size of the image created by
the suspend-to-disk mechanism. It can be written a string
representing a non-negative integer that will be used as an upper
limit of the image size, in bytes. The suspend-to-disk mechanism will
do its best to ensure the image size will not exceed that number. However,
if this turns out to be impossible, it will try to suspend anyway using the
smallest image possible. In particular, if "0" is written to this file, the
suspend image will be as small as possible.
The 'platform' option is only available if the platform provides a special
mechanism to put the system to sleep after creating a hibernation image (ACPI
does that, for example). The 'suspend' option is available if Suspend-to-RAM
is supported. Refer to Documentation/power/basic_pm_debugging.txt for the
description of the 'test_resume' option.
Reading from this file will display the current image size limit, which
is set to 2/5 of available RAM by default.
To select an option, write the string representing it to /sys/power/disk.
/sys/power/pm_trace controls the code which saves the last PM event point in
the RTC across reboots, so that you can debug a machine that just hangs
during suspend (or more commonly, during resume). Namely, the RTC is only
used to save the last PM event point if this file contains '1'. Initially it
contains '0' which may be changed to '1' by writing a string representing a
nonzero integer into it.
/sys/power/image_size controls the size of hibernation images.
To use this debugging feature you should attempt to suspend the machine, then
reboot it and run
It can be written a string representing a non-negative integer that will be
used as a best-effort upper limit of the image size, in bytes. The hibernation
core will do its best to ensure that the image size will not exceed that number.
However, if that turns out to be impossible to achieve, a hibernation image will
still be created and its size will be as small as possible. In particular,
writing '0' to this file will enforce hibernation images to be as small as
possible.
dmesg -s 1000000 | grep 'hash matches'
Reading from this file returns the current image size limit, which is set to
around 2/5 of available RAM by default.
CAUTION: Using it will cause your machine's real-time (CMOS) clock to be
set to a random invalid time after a resume.
/sys/power/pm_trace controls the PM trace mechanism saving the last suspend
or resume event point in the RTC across reboots.
It helps to debug hard lockups or reboots due to device driver failures that
occur during system suspend or resume (which is more common) more effectively.
If /sys/power/pm_trace contains '1', the fingerprint of each suspend/resume
event point in turn will be stored in the RTC memory (overwriting the actual
RTC information), so it will survive a system crash if one occurs right after
storing it and it can be used later to identify the driver that caused the crash
to happen (see Documentation/power/s2ram.txt for more information).
Initially it contains '0' which may be changed to '1' by writing a string
representing a nonzero integer into it.

2
Documentation/powerpc/transactional_memory.txt
View File

@ -167,6 +167,8 @@ signal will be rolled back anyway.
For signals taken in non-TM or suspended mode, we use the
normal/non-checkpointed stack pointer.
Any transaction initiated inside a sighandler and suspended on return
from the sighandler to the kernel will get reclaimed and discarded.
Failure cause codes used by kernel
==================================

4
Documentation/rapidio/mport_cdev.txt
View File

@ -80,6 +80,10 @@ functionality of their platform when planning to use this driver:
III. Module parameters
- 'dma_timeout' - DMA transfer completion timeout (in msec, default value 3000).
This parameter set a maximum completion wait time for SYNC mode DMA
transfer requests and for RIO_WAIT_FOR_ASYNC ioctl requests.
- 'dbg_level' - This parameter allows to control amount of debug information
generated by this device driver. This parameter is formed by set of
bit masks that correspond to the specific functional blocks.

3
Documentation/sphinx-static/theme_overrides.css
View File

@ -42,11 +42,12 @@
caption a.headerlink { opacity: 0; }
caption a.headerlink:hover { opacity: 1; }
/* inline literal: drop the borderbox and red color */
/* inline literal: drop the borderbox, padding and red color */
code, .rst-content tt, .rst-content code {
color: inherit;
border: none;
padding: unset;
background: inherit;
font-size: 85%;
}

29
MAINTAINERS
View File

@ -798,6 +798,7 @@ M: Laura Abbott <labbott@redhat.com>
M: Sumit Semwal <sumit.semwal@linaro.org>
L: devel@driverdev.osuosl.org
S: Supported
F: Documentation/devicetree/bindings/staging/ion/
F: drivers/staging/android/ion
F: drivers/staging/android/uapi/ion.h
F: drivers/staging/android/uapi/ion_test.h
@ -881,6 +882,15 @@ S: Supported
F: drivers/gpu/drm/arc/
F: Documentation/devicetree/bindings/display/snps,arcpgu.txt
ARM ARCHITECTED TIMER DRIVER
M: Mark Rutland <mark.rutland@arm.com>
M: Marc Zyngier <marc.zyngier@arm.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: arch/arm/include/asm/arch_timer.h
F: arch/arm64/include/asm/arch_timer.h
F: drivers/clocksource/arm_arch_timer.c
ARM HDLCD DRM DRIVER
M: Liviu Dudau <liviu.dudau@arm.com>
S: Supported
@ -1004,6 +1014,7 @@ N: meson
ARM/Annapurna Labs ALPINE ARCHITECTURE
M: Tsahee Zidenberg <tsahee@annapurnalabs.com>
M: Antoine Tenart <antoine.tenart@free-electrons.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: arch/arm/mach-alpine/
F: arch/arm/boot/dts/alpine*
@ -3237,7 +3248,7 @@ F: kernel/cpuset.c
CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG)
M: Johannes Weiner <hannes@cmpxchg.org>
M: Michal Hocko <mhocko@kernel.org>
M: Vladimir Davydov <vdavydov@virtuozzo.com>
M: Vladimir Davydov <vdavydov.dev@gmail.com>
L: cgroups@vger.kernel.org
L: linux-mm@kvack.org
S: Maintained
@ -4524,6 +4535,12 @@ L: linux-edac@vger.kernel.org
S: Maintained
F: drivers/edac/sb_edac.c
EDAC-SKYLAKE
M: Tony Luck <tony.luck@intel.com>
L: linux-edac@vger.kernel.org
S: Maintained
F: drivers/edac/skx_edac.c
EDAC-XGENE
APPLIED MICRO (APM) X-GENE SOC EDAC
M: Loc Ho <lho@apm.com>
@ -7654,7 +7671,7 @@ L: linux-rdma@vger.kernel.org
S: Supported
W: https://github.com/SoftRoCE/rxe-dev/wiki/rxe-dev:-Home
Q: http://patchwork.kernel.org/project/linux-rdma/list/
F: drivers/infiniband/hw/rxe/
F: drivers/infiniband/sw/rxe/
F: include/uapi/rdma/rdma_user_rxe.h
MEMBARRIER SUPPORT
@ -11216,12 +11233,8 @@ S: Odd Fixes
F: drivers/staging/vt665?/
STAGING - WILC1000 WIFI DRIVER
M: Johnny Kim <johnny.kim@atmel.com>
M: Austin Shin <austin.shin@atmel.com>
M: Chris Park <chris.park@atmel.com>
M: Tony Cho <tony.cho@atmel.com>
M: Glen Lee <glen.lee@atmel.com>
M: Leo Kim <leo.kim@atmel.com>
M: Aditya Shankar <aditya.shankar@microchip.com>
M: Ganesh Krishna <ganesh.krishna@microchip.com>
L: linux-wireless@vger.kernel.org
S: Supported
F: drivers/staging/wilc1000/

9
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 4
PATCHLEVEL = 8
SUBLEVEL = 0
EXTRAVERSION = -rc1
EXTRAVERSION = -rc5
NAME = Psychotic Stoned Sheep
# *DOCUMENTATION*
@ -635,13 +635,6 @@ endif
# Tell gcc to never replace conditional load with a non-conditional one
KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
PHONY += gcc-plugins
gcc-plugins: scripts_basic
ifdef CONFIG_GCC_PLUGINS
$(Q)$(MAKE) $(build)=scripts/gcc-plugins
endif
@:
include scripts/Makefile.gcc-plugins
ifdef CONFIG_READABLE_ASM

9
arch/Kconfig
View File

@ -461,6 +461,15 @@ config CC_STACKPROTECTOR_STRONG
endchoice
config HAVE_ARCH_WITHIN_STACK_FRAMES
bool
help
An architecture should select this if it can walk the kernel stack
frames to determine if an object is part of either the arguments
or local variables (i.e. that it excludes saved return addresses,
and similar) by implementing an inline arch_within_stack_frames(),
which is used by CONFIG_HARDENED_USERCOPY.
config HAVE_CONTEXT_TRACKING
bool
help

4
arch/arc/include/asm/entry.h
View File

@ -142,7 +142,7 @@
#ifdef CONFIG_ARC_CURR_IN_REG
; Retrieve orig r25 and save it with rest of callee_regs
ld.as r12, [r12, PT_user_r25]
ld r12, [r12, PT_user_r25]
PUSH r12
#else
PUSH r25
@ -198,7 +198,7 @@
; SP is back to start of pt_regs
#ifdef CONFIG_ARC_CURR_IN_REG
st.as r12, [sp, PT_user_r25]
st r12, [sp, PT_user_r25]
#endif
.endm

2
arch/arc/include/asm/irqflags-compact.h
View File

@ -188,10 +188,10 @@ static inline int arch_irqs_disabled(void)
.endm
.macro IRQ_ENABLE scratch
TRACE_ASM_IRQ_ENABLE
lr \scratch, [status32]
or \scratch, \scratch, (STATUS_E1_MASK | STATUS_E2_MASK)
flag \scratch
TRACE_ASM_IRQ_ENABLE
.endm
#endif /* __ASSEMBLY__ */

2
arch/arc/include/asm/pgtable.h
View File

@ -280,7 +280,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
#define pte_page(pte) pfn_to_page(pte_pfn(pte))
#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot)
#define pfn_pte(pfn, prot) (__pte(((pte_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot)))
#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
/* Don't use virt_to_pfn for macros below: could cause truncations for PAE40*/
#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT)

11
arch/arc/include/uapi/asm/elf.h
View File

@ -13,8 +13,15 @@
/* Machine specific ELF Hdr flags */
#define EF_ARC_OSABI_MSK 0x00000f00
#define EF_ARC_OSABI_ORIG 0x00000000 /* MUST be zero for back-compat */
#define EF_ARC_OSABI_CURRENT 0x00000300 /* v3 (no legacy syscalls) */
#define EF_ARC_OSABI_V3 0x00000300 /* v3 (no legacy syscalls) */
#define EF_ARC_OSABI_V4 0x00000400 /* v4 (64bit data any reg align) */
#if __GNUC__ < 6
#define EF_ARC_OSABI_CURRENT EF_ARC_OSABI_V3
#else
#define EF_ARC_OSABI_CURRENT EF_ARC_OSABI_V4
#endif
typedef unsigned long elf_greg_t;
typedef unsigned long elf_fpregset_t;

2
arch/arc/kernel/arcksyms.c
View File

@ -28,6 +28,7 @@ extern void __muldf3(void);
extern void __divdf3(void);
extern void __floatunsidf(void);
extern void __floatunsisf(void);
extern void __udivdi3(void);
EXPORT_SYMBOL(__ashldi3);
EXPORT_SYMBOL(__ashrdi3);
@ -45,6 +46,7 @@ EXPORT_SYMBOL(__muldf3);
EXPORT_SYMBOL(__divdf3);
EXPORT_SYMBOL(__floatunsidf);
EXPORT_SYMBOL(__floatunsisf);
EXPORT_SYMBOL(__udivdi3);
/* ARC optimised assembler routines */
EXPORT_SYMBOL(memset);

2
arch/arc/kernel/process.c
View File

@ -199,7 +199,7 @@ int elf_check_arch(const struct elf32_hdr *x)
}
eflags = x->e_flags;
if ((eflags & EF_ARC_OSABI_MSK) < EF_ARC_OSABI_CURRENT) {
if ((eflags & EF_ARC_OSABI_MSK) != EF_ARC_OSABI_CURRENT) {
pr_err("ABI mismatch - you need newer toolchain\n");
force_sigsegv(SIGSEGV, current);
return 0;

6
arch/arc/kernel/setup.c
View File

@ -291,8 +291,10 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
cpu->dccm.base_addr, TO_KB(cpu->dccm.sz),
cpu->iccm.base_addr, TO_KB(cpu->iccm.sz));
n += scnprintf(buf + n, len - n,
"OS ABI [v3]\t: no-legacy-syscalls\n");
n += scnprintf(buf + n, len - n, "OS ABI [v%d]\t: %s\n",
EF_ARC_OSABI_CURRENT >> 8,
EF_ARC_OSABI_CURRENT == EF_ARC_OSABI_V3 ?
"no-legacy-syscalls" : "64-bit data any register aligned");
return buf;
}

9
arch/arc/mm/cache.c
View File

@ -921,6 +921,15 @@ void arc_cache_init(void)
printk(arc_cache_mumbojumbo(0, str, sizeof(str)));
/*
* Only master CPU needs to execute rest of function:
* - Assume SMP so all cores will have same cache config so
* any geomtry checks will be same for all
* - IOC setup / dma callbacks only need to be setup once
*/
if (cpu)
return;
if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) {
struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache;

1
arch/arc/mm/highmem.c
View File

@ -61,6 +61,7 @@ void *kmap(struct page *page)
return kmap_high(page);
}
EXPORT_SYMBOL(kmap);
void *kmap_atomic(struct page *page)
{

1
arch/arm/Kconfig
View File

@ -35,6 +35,7 @@ config ARM
select HARDIRQS_SW_RESEND
select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
select HAVE_ARCH_HARDENED_USERCOPY
select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU
select HAVE_ARCH_MMAP_RND_BITS if MMU

2
arch/arm/Makefile
View File

@ -260,12 +260,14 @@ machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
ifeq ($(KBUILD_SRC),)
KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
else
KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
endif
endif
endif
export TEXT_OFFSET GZFLAGS MMUEXT

9
arch/arm/boot/dts/arm-realview-pbx-a9.dts
View File

@ -70,13 +70,12 @@ L2: l2-cache {
* associativity as these may be erroneously set
* up by boot loader(s).
*/
cache-size = <1048576>; // 1MB
cache-sets = <4096>;
cache-size = <131072>; // 128KB
cache-sets = <512>;
cache-line-size = <32>;
arm,parity-disable;
arm,tag-latency = <1>;
arm,data-latency = <1 1>;
arm,dirty-latency = <1>;
arm,tag-latency = <1 1 1>;
arm,data-latency = <1 1 1>;
};
scu: scu@1f000000 {

2
arch/arm/boot/dts/integratorap.dts
View File

@ -42,7 +42,7 @@ uartclk: uartclk@14.74M {
};
syscon {
compatible = "arm,integrator-ap-syscon";
compatible = "arm,integrator-ap-syscon", "syscon";
reg = <0x11000000 0x100>;
interrupt-parent = <&pic>;
/* These are the logical module IRQs */

2
arch/arm/boot/dts/integratorcp.dts
View File

@ -94,7 +94,7 @@ timclk: timclk@1M {
};
syscon {
compatible = "arm,integrator-cp-syscon";
compatible = "arm,integrator-cp-syscon", "syscon";
reg = <0xcb000000 0x100>;
};

8
arch/arm/boot/dts/keystone.dtsi
View File

@ -70,14 +70,6 @@ psci {
cpu_on = <0x84000003>;
};
psci {
compatible = "arm,psci";
method = "smc";
cpu_suspend = <0x84000001>;
cpu_off = <0x84000002>;
cpu_on = <0x84000003>;
};
soc {
#address-cells = <1>;
#size-cells = <1>;

2
arch/arm/boot/dts/rk3066a.dtsi
View File

@ -197,6 +197,8 @@ tsadc: tsadc@20060000 {
clock-names = "saradc", "apb_pclk";
interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
#io-channel-cells = <1>;
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
status = "disabled";
};

2
arch/arm/boot/dts/rk3288.dtsi
View File

@ -279,6 +279,8 @@ saradc: saradc@ff100000 {
#io-channel-cells = <1>;
clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
clock-names = "saradc", "apb_pclk";
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
status = "disabled";
};

2
arch/arm/boot/dts/rk3xxx.dtsi
View File

@ -399,6 +399,8 @@ saradc: saradc@2006c000 {
#io-channel-cells = <1>;
clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
clock-names = "saradc", "apb_pclk";
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
status = "disabled";
};

4
arch/arm/boot/dts/tegra124-jetson-tk1.dts
View File

@ -1382,7 +1382,7 @@ dsi_b {
* Pin 41: BR_UART1_TXD
* Pin 44: BR_UART1_RXD
*/
serial@70006000 {
serial@0,70006000 {
compatible = "nvidia,tegra124-hsuart", "nvidia,tegra30-hsuart";
status = "okay";
};
@ -1394,7 +1394,7 @@ serial@70006000 {
* Pin 71: UART2_CTS_L
* Pin 74: UART2_RTS_L
*/
serial@70006040 {
serial@0,70006040 {
compatible = "nvidia,tegra124-hsuart", "nvidia,tegra30-hsuart";
status = "okay";
};

2
arch/arm/configs/aspeed_g4_defconfig
View File

@ -58,7 +58,7 @@ CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_FANOTIFY=y
CONFIG_PRINTK_TIME=1
CONFIG_PRINTK_TIME=y
CONFIG_DYNAMIC_DEBUG=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_PAGE_POISONING=y

2
arch/arm/configs/aspeed_g5_defconfig
View File

@ -59,7 +59,7 @@ CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_FANOTIFY=y
CONFIG_PRINTK_TIME=1
CONFIG_PRINTK_TIME=y
CONFIG_DYNAMIC_DEBUG=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_PAGE_POISONING=y

11
arch/arm/include/asm/uaccess.h
View File

@ -480,7 +480,10 @@ arm_copy_from_user(void *to, const void __user *from, unsigned long n);
static inline unsigned long __must_check
__copy_from_user(void *to, const void __user *from, unsigned long n)
{
unsigned int __ua_flags = uaccess_save_and_enable();
unsigned int __ua_flags;
check_object_size(to, n, false);
__ua_flags = uaccess_save_and_enable();
n = arm_copy_from_user(to, from, n);
uaccess_restore(__ua_flags);
return n;
@ -495,11 +498,15 @@ static inline unsigned long __must_check
__copy_to_user(void __user *to, const void *from, unsigned long n)
{
#ifndef CONFIG_UACCESS_WITH_MEMCPY
unsigned int __ua_flags = uaccess_save_and_enable();
unsigned int __ua_flags;
check_object_size(from, n, true);
__ua_flags = uaccess_save_and_enable();
n = arm_copy_to_user(to, from, n);
uaccess_restore(__ua_flags);
return n;
#else
check_object_size(from, n, true);
return arm_copy_to_user(to, from, n);
#endif
}

1
arch/arm/kernel/entry-armv.S
View File

@ -295,6 +295,7 @@ __und_svc_fault:
bl __und_fault
__und_svc_finish:
get_thread_info tsk
ldr r5, [sp, #S_PSR] @ Get SVC cpsr
svc_exit r5 @ return from exception
UNWIND(.fnend )

8
arch/arm/kernel/sys_oabi-compat.c
View File

@ -279,8 +279,12 @@ asmlinkage long sys_oabi_epoll_wait(int epfd,
mm_segment_t fs;
long ret, err, i;
if (maxevents <= 0 || maxevents > (INT_MAX/sizeof(struct epoll_event)))
if (maxevents <= 0 ||
maxevents > (INT_MAX/sizeof(*kbuf)) ||
maxevents > (INT_MAX/sizeof(*events)))
return -EINVAL;
if (!access_ok(VERIFY_WRITE, events, sizeof(*events) * maxevents))
return -EFAULT;
kbuf = kmalloc(sizeof(*kbuf) * maxevents, GFP_KERNEL);
if (!kbuf)
return -ENOMEM;
@ -317,6 +321,8 @@ asmlinkage long sys_oabi_semtimedop(int semid,
if (nsops < 1 || nsops > SEMOPM)
return -EINVAL;
if (!access_ok(VERIFY_READ, tsops, sizeof(*tsops) * nsops))
return -EFAULT;
sops = kmalloc(sizeof(*sops) * nsops, GFP_KERNEL);
if (!sops)
return -ENOMEM;

6
arch/arm/kvm/arm.c
View File

@ -1009,9 +1009,13 @@ long kvm_arch_vm_ioctl(struct file *filp,
switch (ioctl) {
case KVM_CREATE_IRQCHIP: {
int ret;
if (!vgic_present)
return -ENXIO;
return kvm_vgic_create(kvm, KVM_DEV_TYPE_ARM_VGIC_V2);
mutex_lock(&kvm->lock);
ret = kvm_vgic_create(kvm, KVM_DEV_TYPE_ARM_VGIC_V2);
mutex_unlock(&kvm->lock);
return ret;
}
case KVM_ARM_SET_DEVICE_ADDR: {
struct kvm_arm_device_addr dev_addr;

2
arch/arm/kvm/mmu.c
View File

@ -1309,7 +1309,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
smp_rmb();
pfn = gfn_to_pfn_prot(kvm, gfn, write_fault, &writable);
if (is_error_pfn(pfn))
if (is_error_noslot_pfn(pfn))
return -EFAULT;
if (kvm_is_device_pfn(pfn)) {

2
arch/arm/mach-clps711x/Kconfig
View File

@ -1,13 +1,13 @@
menuconfig ARCH_CLPS711X
bool "Cirrus Logic EP721x/EP731x-based"
depends on ARCH_MULTI_V4T
select ARCH_REQUIRE_GPIOLIB
select AUTO_ZRELADDR
select CLKSRC_OF
select CLPS711X_TIMER
select COMMON_CLK
select CPU_ARM720T
select GENERIC_CLOCKEVENTS
select GPIOLIB
select MFD_SYSCON
select OF_IRQ
select USE_OF

6
arch/arm/mach-imx/gpc.c
View File

@ -271,6 +271,12 @@ static int __init imx_gpc_init(struct device_node *node,
for (i = 0; i < IMR_NUM; i++)
writel_relaxed(~0, gpc_base + GPC_IMR1 + i * 4);
/*
* Clear the OF_POPULATED flag set in of_irq_init so that
* later the GPC power domain driver will not be skipped.
*/
of_node_clear_flag(node, OF_POPULATED);
return 0;
}
IRQCHIP_DECLARE(imx_gpc, "fsl,imx6q-gpc", imx_gpc_init);

3
arch/arm/mach-mvebu/Makefile
View File

@ -1,5 +1,4 @@
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
-I$(srctree)/arch/arm/plat-orion/include
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/arch/arm/plat-orion/include
AFLAGS_coherency_ll.o := -Wa,-march=armv7-a
CFLAGS_pmsu.o := -march=armv7-a

2
arch/arm/mach-oxnas/Kconfig
View File

@ -11,11 +11,13 @@ if ARCH_OXNAS
config MACH_OX810SE
bool "Support OX810SE Based Products"
select ARCH_HAS_RESET_CONTROLLER
select COMMON_CLK_OXNAS
select CPU_ARM926T
select MFD_SYSCON
select OXNAS_RPS_TIMER
select PINCTRL_OXNAS
select RESET_CONTROLLER
select RESET_OXNAS
select VERSATILE_FPGA_IRQ
help

1
arch/arm/mach-pxa/corgi.c
View File

@ -13,6 +13,7 @@
*/
#include <linux/kernel.h>
#include <linux/module.h> /* symbol_get ; symbol_put */
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/major.h>

3
arch/arm/mach-pxa/idp.c
View File

@ -83,7 +83,8 @@ static struct resource smc91x_resources[] = {
};
static struct smc91x_platdata smc91x_platdata = {
.flags = SMC91X_USE_32BIT | SMC91X_USE_DMA | SMC91X_NOWAIT,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_USE_DMA | SMC91X_NOWAIT,
};
static struct platform_device smc91x_device = {

1
arch/arm/mach-pxa/spitz.c
View File

@ -13,6 +13,7 @@
*/
#include <linux/kernel.h>
#include <linux/module.h> /* symbol_get ; symbol_put */
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio_keys.h>

3
arch/arm/mach-pxa/xcep.c
View File

@ -120,7 +120,8 @@ static struct resource smc91x_resources[] = {
};
static struct smc91x_platdata xcep_smc91x_info = {
.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_NOWAIT | SMC91X_USE_DMA,
};
static struct platform_device smc91x_device = {

3
arch/arm/mach-realview/Makefile
View File

@ -1,8 +1,7 @@
#
# Makefile for the linux kernel.
#
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
-I$(srctree)/arch/arm/plat-versatile/include
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/arch/arm/plat-versatile/include
obj-y := core.o
obj-$(CONFIG_REALVIEW_DT) += realview-dt.o

3
arch/arm/mach-realview/core.c
View File

@ -93,7 +93,8 @@ static struct smsc911x_platform_config smsc911x_config = {
};
static struct smc91x_platdata smc91x_platdata = {
.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_NOWAIT,
};
static struct platform_device realview_eth_device = {

2
arch/arm/mach-s5pv210/Makefile
View File

@ -5,7 +5,7 @@
#
# Licensed under GPLv2
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) += -I$(srctree)/$(src)/include -I$(srctree)/arch/arm/plat-samsung/include
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) += -I$(srctree)/arch/arm/plat-samsung/include
# Core

2
arch/arm/mach-sa1100/pleb.c
View File

@ -45,7 +45,7 @@ static struct resource smc91x_resources[] = {
};
static struct smc91x_platdata smc91x_platdata = {
.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
.flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT,
};
static struct platform_device smc91x_device = {

3
arch/arm/mach-shmobile/platsmp.c
View File

@ -40,5 +40,8 @@ bool shmobile_smp_cpu_can_disable(unsigned int cpu)
bool __init shmobile_smp_init_fallback_ops(void)
{
/* fallback on PSCI/smp_ops if no other DT based method is detected */
if (!IS_ENABLED(CONFIG_SMP))
return false;
return platform_can_secondary_boot() ? true : false;
}

21
arch/arm/mm/mmu.c
View File

@ -728,7 +728,8 @@ static void *__init late_alloc(unsigned long sz)
{
void *ptr = (void *)__get_free_pages(PGALLOC_GFP, get_order(sz));
BUG_ON(!ptr);
if (!ptr || !pgtable_page_ctor(virt_to_page(ptr)))
BUG();
return ptr;
}
@ -1155,10 +1156,19 @@ void __init sanity_check_meminfo(void)
{
phys_addr_t memblock_limit = 0;
int highmem = 0;
phys_addr_t vmalloc_limit = __pa(vmalloc_min - 1) + 1;
u64 vmalloc_limit;
struct memblock_region *reg;
bool should_use_highmem = false;
/*
* Let's use our own (unoptimized) equivalent of __pa() that is
* not affected by wrap-arounds when sizeof(phys_addr_t) == 4.
* The result is used as the upper bound on physical memory address
* and may itself be outside the valid range for which phys_addr_t
* and therefore __pa() is defined.
*/
vmalloc_limit = (u64)(uintptr_t)vmalloc_min - PAGE_OFFSET + PHYS_OFFSET;
for_each_memblock(memory, reg) {
phys_addr_t block_start = reg->base;
phys_addr_t block_end = reg->base + reg->size;
@ -1183,10 +1193,11 @@ void __init sanity_check_meminfo(void)
if (reg->size > size_limit) {
phys_addr_t overlap_size = reg->size - size_limit;
pr_notice("Truncating RAM at %pa-%pa to -%pa",
&block_start, &block_end, &vmalloc_limit);
memblock_remove(vmalloc_limit, overlap_size);
pr_notice("Truncating RAM at %pa-%pa",
&block_start, &block_end);
block_end = vmalloc_limit;
pr_cont(" to -%pa", &block_end);
memblock_remove(vmalloc_limit, overlap_size);
should_use_highmem = true;
}
}

2
arch/arm/xen/enlighten.c
View File

@ -50,7 +50,7 @@ DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
static struct vcpu_info __percpu *xen_vcpu_info;
/* Linux <-> Xen vCPU id mapping */
DEFINE_PER_CPU(int, xen_vcpu_id) = -1;
DEFINE_PER_CPU(uint32_t, xen_vcpu_id);
EXPORT_PER_CPU_SYMBOL(xen_vcpu_id);
/* These are unused until we support booting "pre-ballooned" */

1
arch/arm64/Kconfig
View File

@ -54,6 +54,7 @@ config ARM64
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_BITREVERSE
select HAVE_ARCH_HARDENED_USERCOPY
select HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48)

4
arch/arm64/Kconfig.platforms
View File

@ -8,7 +8,7 @@ config ARCH_SUNXI
config ARCH_ALPINE
bool "Annapurna Labs Alpine platform"
select ALPINE_MSI
select ALPINE_MSI if PCI
help
This enables support for the Annapurna Labs Alpine
Soc family.
@ -66,7 +66,7 @@ config ARCH_LG1K
config ARCH_HISI
bool "Hisilicon SoC Family"
select ARM_TIMER_SP804
select HISILICON_IRQ_MBIGEN
select HISILICON_IRQ_MBIGEN if PCI
help
This enables support for Hisilicon ARMv8 SoC family

3
arch/arm64/boot/dts/exynos/exynos7-espresso.dts
View File

@ -12,6 +12,7 @@
/dts-v1/;
#include "exynos7.dtsi"
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/clock/samsung,s2mps11.h>
/ {
model = "Samsung Exynos7 Espresso board based on EXYNOS7";
@ -43,6 +44,8 @@ &serial_2 {
&rtc {
status = "okay";
clocks = <&clock_ccore PCLK_RTC>, <&s2mps15_osc S2MPS11_CLK_AP>;
clock-names = "rtc", "rtc_src";
};
&watchdog {

2
arch/arm64/boot/dts/rockchip/rk3368.dtsi
View File

@ -270,6 +270,8 @@ saradc: saradc@ff100000 {
#io-channel-cells = <1>;
clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
clock-names = "saradc", "apb_pclk";
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
status = "disabled";
};

53
arch/arm64/configs/defconfig
View File

@ -1,4 +1,3 @@
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_AUDIT=y
@ -15,10 +14,14 @@ CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
CONFIG_BLK_CGROUP=y
CONFIG_CGROUP_PIDS=y
CONFIG_CGROUP_HUGETLB=y
# CONFIG_UTS_NS is not set
# CONFIG_IPC_NS is not set
# CONFIG_NET_NS is not set
CONFIG_CPUSETS=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_CGROUP_PERF=y
CONFIG_USER_NS=y
CONFIG_SCHED_AUTOGROUP=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_KALLSYMS_ALL=y
@ -71,6 +74,7 @@ CONFIG_PREEMPT=y
CONFIG_KSM=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_CMA=y
CONFIG_SECCOMP=y
CONFIG_XEN=y
CONFIG_KEXEC=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
@ -84,10 +88,37 @@ CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
# CONFIG_IPV6 is not set
CONFIG_IPV6=m
CONFIG_NETFILTER=y
CONFIG_NF_CONNTRACK=m
CONFIG_NF_CONNTRACK_EVENTS=y
CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
CONFIG_NETFILTER_XT_TARGET_LOG=m
CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
CONFIG_NF_CONNTRACK_IPV4=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_FILTER=m
CONFIG_IP_NF_TARGET_REJECT=m
CONFIG_IP_NF_NAT=m
CONFIG_IP_NF_TARGET_MASQUERADE=m
CONFIG_IP_NF_MANGLE=m
CONFIG_NF_CONNTRACK_IPV6=m
CONFIG_IP6_NF_IPTABLES=m
CONFIG_IP6_NF_FILTER=m
CONFIG_IP6_NF_TARGET_REJECT=m
CONFIG_IP6_NF_MANGLE=m
CONFIG_IP6_NF_NAT=m
CONFIG_IP6_NF_TARGET_MASQUERADE=m
CONFIG_BRIDGE=m
CONFIG_BRIDGE_VLAN_FILTERING=y
CONFIG_VLAN_8021Q=m
CONFIG_VLAN_8021Q_GVRP=y
CONFIG_VLAN_8021Q_MVRP=y
CONFIG_BPF_JIT=y
CONFIG_CFG80211=m
CONFIG_MAC80211=m
@ -103,6 +134,7 @@ CONFIG_MTD=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_SPI_NOR=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_NBD=m
CONFIG_VIRTIO_BLK=y
CONFIG_SRAM=y
# CONFIG_SCSI_PROC_FS is not set
@ -120,7 +152,10 @@ CONFIG_SATA_SIL24=y
CONFIG_PATA_PLATFORM=y
CONFIG_PATA_OF_PLATFORM=y
CONFIG_NETDEVICES=y
CONFIG_MACVLAN=m
CONFIG_MACVTAP=m
CONFIG_TUN=y
CONFIG_VETH=m
CONFIG_VIRTIO_NET=y
CONFIG_AMD_XGBE=y
CONFIG_NET_XGENE=y
@ -350,12 +385,16 @@ CONFIG_EXYNOS_ADC=y
CONFIG_PWM_SAMSUNG=y
CONFIG_EXT2_FS=y
CONFIG_EXT3_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_BTRFS_FS=m
CONFIG_BTRFS_FS_POSIX_ACL=y
CONFIG_FANOTIFY=y
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
CONFIG_QUOTA=y
CONFIG_AUTOFS4_FS=y
CONFIG_FUSE_FS=y
CONFIG_CUSE=y
CONFIG_FUSE_FS=m
CONFIG_CUSE=m
CONFIG_OVERLAY_FS=m
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
CONFIG_HUGETLBFS=y

2
arch/arm64/include/asm/kprobes.h
View File

@ -22,7 +22,6 @@
#define __ARCH_WANT_KPROBES_INSN_SLOT
#define MAX_INSN_SIZE 1
#define MAX_STACK_SIZE 128
#define flush_insn_slot(p) do { } while (0)
#define kretprobe_blacklist_size 0
@ -47,7 +46,6 @@ struct kprobe_ctlblk {
struct prev_kprobe prev_kprobe;
struct kprobe_step_ctx ss_ctx;
struct pt_regs jprobe_saved_regs;
char jprobes_stack[MAX_STACK_SIZE];
};
void arch_remove_kprobe(struct kprobe *);

15
arch/arm64/include/asm/uaccess.h
View File

@ -265,22 +265,25 @@ extern unsigned long __must_check __clear_user(void __user *addr, unsigned long
static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
{
kasan_check_write(to, n);
return __arch_copy_from_user(to, from, n);
check_object_size(to, n, false);
return __arch_copy_from_user(to, from, n);
}
static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
{
kasan_check_read(from, n);
return __arch_copy_to_user(to, from, n);
check_object_size(from, n, true);
return __arch_copy_to_user(to, from, n);
}
static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
{
kasan_check_write(to, n);
if (access_ok(VERIFY_READ, from, n))
if (access_ok(VERIFY_READ, from, n)) {
check_object_size(to, n, false);
n = __arch_copy_from_user(to, from, n);
else /* security hole - plug it */
} else /* security hole - plug it */
memset(to, 0, n);
return n;
}
@ -289,8 +292,10 @@ static inline unsigned long __must_check copy_to_user(void __user *to, const voi
{
kasan_check_read(from, n);
if (access_ok(VERIFY_WRITE, to, n))
if (access_ok(VERIFY_WRITE, to, n)) {
check_object_size(from, n, true);
n = __arch_copy_to_user(to, from, n);
}
return n;
}

7
arch/arm64/kernel/entry.S
View File

@ -353,6 +353,8 @@ el1_sync:
lsr x24, x1, #ESR_ELx_EC_SHIFT // exception class
cmp x24, #ESR_ELx_EC_DABT_CUR // data abort in EL1
b.eq el1_da
cmp x24, #ESR_ELx_EC_IABT_CUR // instruction abort in EL1
b.eq el1_ia
cmp x24, #ESR_ELx_EC_SYS64 // configurable trap
b.eq el1_undef
cmp x24, #ESR_ELx_EC_SP_ALIGN // stack alignment exception
@ -364,6 +366,11 @@ el1_sync:
cmp x24, #ESR_ELx_EC_BREAKPT_CUR // debug exception in EL1
b.ge el1_dbg
b el1_inv
el1_ia:
/*
* Fall through to the Data abort case
*/
el1_da:
/*
* Data abort handling

3
arch/arm64/kernel/head.S
View File

@ -757,6 +757,9 @@ ENTRY(__enable_mmu)
isb
bl __create_page_tables // recreate kernel mapping
tlbi vmalle1 // Remove any stale TLB entries
dsb nsh
msr sctlr_el1, x19 // re-enable the MMU
isb
ic iallu // flush instructions fetched

82
arch/arm64/kernel/hibernate.c
View File

@ -35,6 +35,7 @@
#include <asm/sections.h>
#include <asm/smp.h>
#include <asm/suspend.h>
#include <asm/sysreg.h>
#include <asm/virt.h>
/*
@ -217,12 +218,22 @@ static int create_safe_exec_page(void *src_start, size_t length,
set_pte(pte, __pte(virt_to_phys((void *)dst) |
pgprot_val(PAGE_KERNEL_EXEC)));
/* Load our new page tables */
asm volatile("msr ttbr0_el1, %0;"
"isb;"
"tlbi vmalle1is;"
"dsb ish;"
"isb" : : "r"(virt_to_phys(pgd)));
/*
* Load our new page tables. A strict BBM approach requires that we
* ensure that TLBs are free of any entries that may overlap with the
* global mappings we are about to install.
*
* For a real hibernate/resume cycle TTBR0 currently points to a zero
* page, but TLBs may contain stale ASID-tagged entries (e.g. for EFI
* runtime services), while for a userspace-driven test_resume cycle it
* points to userspace page tables (and we must point it at a zero page
* ourselves). Elsewhere we only (un)install the idmap with preemption
* disabled, so T0SZ should be as required regardless.
*/
cpu_set_reserved_ttbr0();
local_flush_tlb_all();
write_sysreg(virt_to_phys(pgd), ttbr0_el1);
isb();
*phys_dst_addr = virt_to_phys((void *)dst);
@ -393,6 +404,38 @@ int swsusp_arch_resume(void)
void __noreturn (*hibernate_exit)(phys_addr_t, phys_addr_t, void *,
void *, phys_addr_t, phys_addr_t);
/*
* Restoring the memory image will overwrite the ttbr1 page tables.
* Create a second copy of just the linear map, and use this when
* restoring.
*/
tmp_pg_dir = (pgd_t *)get_safe_page(GFP_ATOMIC);
if (!tmp_pg_dir) {
pr_err("Failed to allocate memory for temporary page tables.");
rc = -ENOMEM;
goto out;
}
rc = copy_page_tables(tmp_pg_dir, PAGE_OFFSET, 0);
if (rc)
goto out;
/*
* Since we only copied the linear map, we need to find restore_pblist's
* linear map address.
*/
lm_restore_pblist = LMADDR(restore_pblist);
/*
* We need a zero page that is zero before & after resume in order to
* to break before make on the ttbr1 page tables.
*/
zero_page = (void *)get_safe_page(GFP_ATOMIC);
if (!zero_page) {
pr_err("Failed to allocate zero page.");
rc = -ENOMEM;
goto out;
}
/*
* Locate the exit code in the bottom-but-one page, so that *NULL
* still has disastrous affects.
@ -418,27 +461,6 @@ int swsusp_arch_resume(void)
*/
__flush_dcache_area(hibernate_exit, exit_size);
/*
* Restoring the memory image will overwrite the ttbr1 page tables.
* Create a second copy of just the linear map, and use this when
* restoring.
*/
tmp_pg_dir = (pgd_t *)get_safe_page(GFP_ATOMIC);
if (!tmp_pg_dir) {
pr_err("Failed to allocate memory for temporary page tables.");
rc = -ENOMEM;
goto out;
}
rc = copy_page_tables(tmp_pg_dir, PAGE_OFFSET, 0);
if (rc)
goto out;
/*
* Since we only copied the linear map, we need to find restore_pblist's
* linear map address.
*/
lm_restore_pblist = LMADDR(restore_pblist);
/*
* KASLR will cause the el2 vectors to be in a different location in
* the resumed kernel. Load hibernate's temporary copy into el2.
@ -453,12 +475,6 @@ int swsusp_arch_resume(void)
__hyp_set_vectors(el2_vectors);
}
/*
* We need a zero page that is zero before & after resume in order to
* to break before make on the ttbr1 page tables.
*/
zero_page = (void *)get_safe_page(GFP_ATOMIC);
hibernate_exit(virt_to_phys(tmp_pg_dir), resume_hdr.ttbr1_el1,
resume_hdr.reenter_kernel, lm_restore_pblist,
resume_hdr.__hyp_stub_vectors, virt_to_phys(zero_page));

31
arch/arm64/kernel/probes/kprobes.c
View File

@ -41,18 +41,6 @@ DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
static void __kprobes
post_kprobe_handler(struct kprobe_ctlblk *, struct pt_regs *);
static inline unsigned long min_stack_size(unsigned long addr)
{
unsigned long size;
if (on_irq_stack(addr, raw_smp_processor_id()))
size = IRQ_STACK_PTR(raw_smp_processor_id()) - addr;
else
size = (unsigned long)current_thread_info() + THREAD_START_SP - addr;
return min(size, FIELD_SIZEOF(struct kprobe_ctlblk, jprobes_stack));
}
static void __kprobes arch_prepare_ss_slot(struct kprobe *p)
{
/* prepare insn slot */
@ -489,20 +477,15 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
{
struct jprobe *jp = container_of(p, struct jprobe, kp);
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
long stack_ptr = kernel_stack_pointer(regs);
kcb->jprobe_saved_regs = *regs;
/*
* As Linus pointed out, gcc assumes that the callee
* owns the argument space and could overwrite it, e.g.
* tailcall optimization. So, to be absolutely safe
* we also save and restore enough stack bytes to cover
* the argument area.
* Since we can't be sure where in the stack frame "stacked"
* pass-by-value arguments are stored we just don't try to
* duplicate any of the stack. Do not use jprobes on functions that
* use more than 64 bytes (after padding each to an 8 byte boundary)
* of arguments, or pass individual arguments larger than 16 bytes.
*/
kasan_disable_current();
memcpy(kcb->jprobes_stack, (void *)stack_ptr,
min_stack_size(stack_ptr));
kasan_enable_current();
instruction_pointer_set(regs, (unsigned long) jp->entry);
preempt_disable();
@ -554,10 +537,6 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
}
unpause_graph_tracing();
*regs = kcb->jprobe_saved_regs;
kasan_disable_current();
memcpy((void *)stack_addr, kcb->jprobes_stack,
min_stack_size(stack_addr));
kasan_enable_current();
preempt_enable_no_resched();
return 1;
}

10
arch/arm64/kernel/sleep.S
View File

@ -101,12 +101,20 @@ ENTRY(cpu_resume)
bl el2_setup // if in EL2 drop to EL1 cleanly
/* enable the MMU early - so we can access sleep_save_stash by va */
adr_l lr, __enable_mmu /* __cpu_setup will return here */
ldr x27, =_cpu_resume /* __enable_mmu will branch here */
adr_l x27, _resume_switched /* __enable_mmu will branch here */
adrp x25, idmap_pg_dir
adrp x26, swapper_pg_dir
b __cpu_setup
ENDPROC(cpu_resume)
.pushsection ".idmap.text", "ax"
_resume_switched:
ldr x8, =_cpu_resume
br x8
ENDPROC(_resume_switched)
.ltorg
.popsection
ENTRY(_cpu_resume)
mrs x1, mpidr_el1
adrp x8, mpidr_hash

8
arch/arm64/kernel/smp.c
View File

@ -661,9 +661,9 @@ void __init smp_init_cpus(void)
acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
acpi_parse_gic_cpu_interface, 0);
if (cpu_count > NR_CPUS)
pr_warn("no. of cores (%d) greater than configured maximum of %d - clipping\n",
cpu_count, NR_CPUS);
if (cpu_count > nr_cpu_ids)
pr_warn("Number of cores (%d) exceeds configured maximum of %d - clipping\n",
cpu_count, nr_cpu_ids);
if (!bootcpu_valid) {
pr_err("missing boot CPU MPIDR, not enabling secondaries\n");
@ -677,7 +677,7 @@ void __init smp_init_cpus(void)
* with entries in cpu_logical_map while initializing the cpus.
* If the cpu set-up fails, invalidate the cpu_logical_map entry.
*/
for (i = 1; i < NR_CPUS; i++) {
for (i = 1; i < nr_cpu_ids; i++) {
if (cpu_logical_map(i) != INVALID_HWID) {
if (smp_cpu_setup(i))
cpu_logical_map(i) = INVALID_HWID;

2
arch/arm64/kvm/hyp/switch.c
View File

@ -256,7 +256,7 @@ static int __hyp_text __guest_run(struct kvm_vcpu *vcpu)
/*
* We must restore the 32-bit state before the sysregs, thanks
* to Cortex-A57 erratum #852523.
* to erratum #852523 (Cortex-A57) or #853709 (Cortex-A72).
*/
__sysreg32_restore_state(vcpu);
__sysreg_restore_guest_state(guest_ctxt);

10
arch/arm64/kvm/sys_regs.c
View File

@ -823,14 +823,6 @@ static bool access_pmuserenr(struct kvm_vcpu *vcpu, struct sys_reg_params *p,
* Architected system registers.
* Important: Must be sorted ascending by Op0, Op1, CRn, CRm, Op2
*
* We could trap ID_DFR0 and tell the guest we don't support performance
* monitoring. Unfortunately the patch to make the kernel check ID_DFR0 was
* NAKed, so it will read the PMCR anyway.
*
* Therefore we tell the guest we have 0 counters. Unfortunately, we
* must always support PMCCNTR (the cycle counter): we just RAZ/WI for
* all PM registers, which doesn't crash the guest kernel at least.
*
* Debug handling: We do trap most, if not all debug related system
* registers. The implementation is good enough to ensure that a guest
* can use these with minimal performance degradation. The drawback is
@ -1360,7 +1352,7 @@ static const struct sys_reg_desc cp15_regs[] = {
{ Op1( 0), CRn(10), CRm( 3), Op2( 1), access_vm_reg, NULL, c10_AMAIR1 },
/* ICC_SRE */
{ Op1( 0), CRn(12), CRm(12), Op2( 5), trap_raz_wi },
{ Op1( 0), CRn(12), CRm(12), Op2( 5), access_gic_sre },
{ Op1( 0), CRn(13), CRm( 0), Op2( 1), access_vm_reg, NULL, c13_CID },

6
arch/arm64/mm/dump.c
View File

@ -242,7 +242,7 @@ static void note_page(struct pg_state *st, unsigned long addr, unsigned level,
static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start)
{
pte_t *pte = pte_offset_kernel(pmd, 0);
pte_t *pte = pte_offset_kernel(pmd, 0UL);
unsigned long addr;
unsigned i;
@ -254,7 +254,7 @@ static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start)
static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
{
pmd_t *pmd = pmd_offset(pud, 0);
pmd_t *pmd = pmd_offset(pud, 0UL);
unsigned long addr;
unsigned i;
@ -271,7 +271,7 @@ static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
{
pud_t *pud = pud_offset(pgd, 0);
pud_t *pud = pud_offset(pgd, 0UL);
unsigned long addr;
unsigned i;

14
arch/arm64/mm/fault.c
View File

@ -153,6 +153,11 @@ int ptep_set_access_flags(struct vm_area_struct *vma,
}
#endif
static bool is_el1_instruction_abort(unsigned int esr)
{
return ESR_ELx_EC(esr) == ESR_ELx_EC_IABT_CUR;
}
/*
* The kernel tried to access some page that wasn't present.
*/
@ -161,8 +166,9 @@ static void __do_kernel_fault(struct mm_struct *mm, unsigned long addr,
{
/*
* Are we prepared to handle this kernel fault?
* We are almost certainly not prepared to handle instruction faults.
*/
if (fixup_exception(regs))
if (!is_el1_instruction_abort(esr) && fixup_exception(regs))
return;
/*
@ -267,7 +273,8 @@ static inline bool is_permission_fault(unsigned int esr)
unsigned int ec = ESR_ELx_EC(esr);
unsigned int fsc_type = esr & ESR_ELx_FSC_TYPE;
return (ec == ESR_ELx_EC_DABT_CUR && fsc_type == ESR_ELx_FSC_PERM);
return (ec == ESR_ELx_EC_DABT_CUR && fsc_type == ESR_ELx_FSC_PERM) ||
(ec == ESR_ELx_EC_IABT_CUR && fsc_type == ESR_ELx_FSC_PERM);
}
static bool is_el0_instruction_abort(unsigned int esr)
@ -312,6 +319,9 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr,
if (regs->orig_addr_limit == KERNEL_DS)
die("Accessing user space memory with fs=KERNEL_DS", regs, esr);
if (is_el1_instruction_abort(esr))
die("Attempting to execute userspace memory", regs, esr);
if (!search_exception_tables(regs->pc))
die("Accessing user space memory outside uaccess.h routines", regs, esr);
}

2
arch/arm64/mm/numa.c
View File

@ -23,6 +23,8 @@
#include <linux/module.h>
#include <linux/of.h>
#include <asm/acpi.h>
struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
EXPORT_SYMBOL(node_data);
nodemask_t numa_nodes_parsed __initdata;

9
arch/arm64/mm/proc.S
View File

@ -100,7 +100,16 @@ ENTRY(cpu_do_resume)
msr tcr_el1, x8
msr vbar_el1, x9
/*
* __cpu_setup() cleared MDSCR_EL1.MDE and friends, before unmasking
* debug exceptions. By restoring MDSCR_EL1 here, we may take a debug
* exception. Mask them until local_dbg_restore() in cpu_suspend()
* resets them.
*/
disable_dbg
msr mdscr_el1, x10
msr sctlr_el1, x12
/*
* Restore oslsr_el1 by writing oslar_el1

3
arch/blackfin/mach-bf561/boards/cm_bf561.c
View File

@ -146,7 +146,8 @@ static struct platform_device hitachi_fb_device = {
#include <linux/smc91x.h>
static struct smc91x_platdata smc91x_info = {
.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_NOWAIT,
.leda = RPC_LED_100_10,
.ledb = RPC_LED_TX_RX,
};

3
arch/blackfin/mach-bf561/boards/ezkit.c
View File

@ -134,7 +134,8 @@ static struct platform_device net2272_bfin_device = {
#include <linux/smc91x.h>
static struct smc91x_platdata smc91x_info = {
.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_NOWAIT,
.leda = RPC_LED_100_10,
.ledb = RPC_LED_TX_RX,
};

2
arch/h8300/include/asm/io.h
View File

@ -3,6 +3,8 @@
#ifdef __KERNEL__
#include <linux/types.h>
/* H8/300 internal I/O functions */
#define __raw_readb __raw_readb

1
arch/ia64/Kconfig
View File

@ -52,6 +52,7 @@ config IA64
select MODULES_USE_ELF_RELA
select ARCH_USE_CMPXCHG_LOCKREF
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_HARDENED_USERCOPY
default y
help
The Itanium Processor Family is Intel's 64-bit successor to

18
arch/ia64/include/asm/uaccess.h
View File

@ -241,12 +241,18 @@ extern unsigned long __must_check __copy_user (void __user *to, const void __use
static inline unsigned long
__copy_to_user (void __user *to, const void *from, unsigned long count)
{
if (!__builtin_constant_p(count))
check_object_size(from, count, true);
return __copy_user(to, (__force void __user *) from, count);
}
static inline unsigned long
__copy_from_user (void *to, const void __user *from, unsigned long count)
{
if (!__builtin_constant_p(count))
check_object_size(to, count, false);
return __copy_user((__force void __user *) to, from, count);
}
@ -258,8 +264,11 @@ __copy_from_user (void *to, const void __user *from, unsigned long count)
const void *__cu_from = (from); \
long __cu_len = (n); \
\
if (__access_ok(__cu_to, __cu_len, get_fs())) \
__cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \
if (__access_ok(__cu_to, __cu_len, get_fs())) { \
if (!__builtin_constant_p(n)) \
check_object_size(__cu_from, __cu_len, true); \
__cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \
} \
__cu_len; \
})
@ -270,8 +279,11 @@ __copy_from_user (void *to, const void __user *from, unsigned long count)
long __cu_len = (n); \
\
__chk_user_ptr(__cu_from); \
if (__access_ok(__cu_from, __cu_len, get_fs())) \
if (__access_ok(__cu_from, __cu_len, get_fs())) { \
if (!__builtin_constant_p(n)) \
check_object_size(__cu_to, __cu_len, false); \
__cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \
} \
__cu_len; \
})

1
arch/m68k/kernel/signal.c
View File

@ -213,7 +213,6 @@ static inline int frame_extra_sizes(int f)
static inline void adjustformat(struct pt_regs *regs)
{
((struct switch_stack *)regs - 1)->a5 = current->mm->start_data;
/*
* set format byte to make stack appear modulo 4, which it will
* be when doing the rte

1
arch/metag/mm/init.c
View File

@ -390,7 +390,6 @@ void __init mem_init(void)
free_all_bootmem();
mem_init_print_info(NULL);
show_mem(0);
}
void free_initmem(void)

4
arch/mips/include/asm/page.h
View File

@ -164,7 +164,7 @@ typedef struct { unsigned long pgprot; } pgprot_t;
*/
static inline unsigned long ___pa(unsigned long x)
{
if (config_enabled(CONFIG_64BIT)) {
if (IS_ENABLED(CONFIG_64BIT)) {
/*
* For MIPS64 the virtual address may either be in one of
* the compatibility segements ckseg0 or ckseg1, or it may
@ -173,7 +173,7 @@ static inline unsigned long ___pa(unsigned long x)
return x < CKSEG0 ? XPHYSADDR(x) : CPHYSADDR(x);
}
if (!config_enabled(CONFIG_EVA)) {
if (!IS_ENABLED(CONFIG_EVA)) {
/*
* We're using the standard MIPS32 legacy memory map, ie.
* the address x is going to be in kseg0 or kseg1. We can

35
arch/mips/kvm/emulate.c
View File

@ -1642,8 +1642,14 @@ enum emulation_result kvm_mips_emulate_cache(union mips_instruction inst,
preempt_disable();
if (KVM_GUEST_KSEGX(va) == KVM_GUEST_KSEG0) {
if (kvm_mips_host_tlb_lookup(vcpu, va) < 0)
kvm_mips_handle_kseg0_tlb_fault(va, vcpu);
if (kvm_mips_host_tlb_lookup(vcpu, va) < 0 &&
kvm_mips_handle_kseg0_tlb_fault(va, vcpu)) {
kvm_err("%s: handling mapped kseg0 tlb fault for %lx, vcpu: %p, ASID: %#lx\n",
__func__, va, vcpu, read_c0_entryhi());
er = EMULATE_FAIL;
preempt_enable();
goto done;
}
} else if ((KVM_GUEST_KSEGX(va) < KVM_GUEST_KSEG0) ||
KVM_GUEST_KSEGX(va) == KVM_GUEST_KSEG23) {
int index;
@ -1680,12 +1686,18 @@ enum emulation_result kvm_mips_emulate_cache(union mips_instruction inst,
run, vcpu);
preempt_enable();
goto dont_update_pc;
} else {
/*
* We fault an entry from the guest tlb to the
* shadow host TLB
*/
kvm_mips_handle_mapped_seg_tlb_fault(vcpu, tlb);
}
/*
* We fault an entry from the guest tlb to the
* shadow host TLB
*/
if (kvm_mips_handle_mapped_seg_tlb_fault(vcpu, tlb)) {
kvm_err("%s: handling mapped seg tlb fault for %lx, index: %u, vcpu: %p, ASID: %#lx\n",
__func__, va, index, vcpu,
read_c0_entryhi());
er = EMULATE_FAIL;
preempt_enable();
goto done;
}
}
} else {
@ -2659,7 +2671,12 @@ enum emulation_result kvm_mips_handle_tlbmiss(u32 cause,
* OK we have a Guest TLB entry, now inject it into the
* shadow host TLB
*/
kvm_mips_handle_mapped_seg_tlb_fault(vcpu, tlb);
if (kvm_mips_handle_mapped_seg_tlb_fault(vcpu, tlb)) {
kvm_err("%s: handling mapped seg tlb fault for %lx, index: %u, vcpu: %p, ASID: %#lx\n",
__func__, va, index, vcpu,
read_c0_entryhi());
er = EMULATE_FAIL;
}
}
}

66
arch/mips/kvm/mmu.c
View File

@ -40,7 +40,7 @@ static int kvm_mips_map_page(struct kvm *kvm, gfn_t gfn)
srcu_idx = srcu_read_lock(&kvm->srcu);
pfn = gfn_to_pfn(kvm, gfn);
if (is_error_pfn(pfn)) {
if (is_error_noslot_pfn(pfn)) {
kvm_err("Couldn't get pfn for gfn %#llx!\n", gfn);
err = -EFAULT;
goto out;
@ -99,7 +99,7 @@ int kvm_mips_handle_kseg0_tlb_fault(unsigned long badvaddr,
}
gfn = (KVM_GUEST_CPHYSADDR(badvaddr) >> PAGE_SHIFT);
if (gfn >= kvm->arch.guest_pmap_npages) {
if ((gfn | 1) >= kvm->arch.guest_pmap_npages) {
kvm_err("%s: Invalid gfn: %#llx, BadVaddr: %#lx\n", __func__,
gfn, badvaddr);
kvm_mips_dump_host_tlbs();
@ -138,35 +138,49 @@ int kvm_mips_handle_mapped_seg_tlb_fault(struct kvm_vcpu *vcpu,
unsigned long entryhi = 0, entrylo0 = 0, entrylo1 = 0;
struct kvm *kvm = vcpu->kvm;
kvm_pfn_t pfn0, pfn1;
gfn_t gfn0, gfn1;
long tlb_lo[2];
int ret;
if ((tlb->tlb_hi & VPN2_MASK) == 0) {
pfn0 = 0;
pfn1 = 0;
} else {
if (kvm_mips_map_page(kvm, mips3_tlbpfn_to_paddr(tlb->tlb_lo[0])
>> PAGE_SHIFT) < 0)
return -1;
tlb_lo[0] = tlb->tlb_lo[0];
tlb_lo[1] = tlb->tlb_lo[1];
if (kvm_mips_map_page(kvm, mips3_tlbpfn_to_paddr(tlb->tlb_lo[1])
>> PAGE_SHIFT) < 0)
return -1;
/*
* The commpage address must not be mapped to anything else if the guest
* TLB contains entries nearby, or commpage accesses will break.
*/
if (!((tlb->tlb_hi ^ KVM_GUEST_COMMPAGE_ADDR) &
VPN2_MASK & (PAGE_MASK << 1)))
tlb_lo[(KVM_GUEST_COMMPAGE_ADDR >> PAGE_SHIFT) & 1] = 0;
pfn0 = kvm->arch.guest_pmap[
mips3_tlbpfn_to_paddr(tlb->tlb_lo[0]) >> PAGE_SHIFT];
pfn1 = kvm->arch.guest_pmap[
mips3_tlbpfn_to_paddr(tlb->tlb_lo[1]) >> PAGE_SHIFT];
gfn0 = mips3_tlbpfn_to_paddr(tlb_lo[0]) >> PAGE_SHIFT;
gfn1 = mips3_tlbpfn_to_paddr(tlb_lo[1]) >> PAGE_SHIFT;
if (gfn0 >= kvm->arch.guest_pmap_npages ||
gfn1 >= kvm->arch.guest_pmap_npages) {
kvm_err("%s: Invalid gfn: [%#llx, %#llx], EHi: %#lx\n",
__func__, gfn0, gfn1, tlb->tlb_hi);
kvm_mips_dump_guest_tlbs(vcpu);
return -1;
}
if (kvm_mips_map_page(kvm, gfn0) < 0)
return -1;
if (kvm_mips_map_page(kvm, gfn1) < 0)
return -1;
pfn0 = kvm->arch.guest_pmap[gfn0];
pfn1 = kvm->arch.guest_pmap[gfn1];
/* Get attributes from the Guest TLB */
entrylo0 = mips3_paddr_to_tlbpfn(pfn0 << PAGE_SHIFT) |
((_page_cachable_default >> _CACHE_SHIFT) << ENTRYLO_C_SHIFT) |
(tlb->tlb_lo[0] & ENTRYLO_D) |
(tlb->tlb_lo[0] & ENTRYLO_V);
(tlb_lo[0] & ENTRYLO_D) |
(tlb_lo[0] & ENTRYLO_V);
entrylo1 = mips3_paddr_to_tlbpfn(pfn1 << PAGE_SHIFT) |
((_page_cachable_default >> _CACHE_SHIFT) << ENTRYLO_C_SHIFT) |
(tlb->tlb_lo[1] & ENTRYLO_D) |
(tlb->tlb_lo[1] & ENTRYLO_V);
(tlb_lo[1] & ENTRYLO_D) |
(tlb_lo[1] & ENTRYLO_V);
kvm_debug("@ %#lx tlb_lo0: 0x%08lx tlb_lo1: 0x%08lx\n", vcpu->arch.pc,
tlb->tlb_lo[0], tlb->tlb_lo[1]);
@ -354,9 +368,15 @@ u32 kvm_get_inst(u32 *opc, struct kvm_vcpu *vcpu)
local_irq_restore(flags);
return KVM_INVALID_INST;
}
kvm_mips_handle_mapped_seg_tlb_fault(vcpu,
&vcpu->arch.
guest_tlb[index]);
if (kvm_mips_handle_mapped_seg_tlb_fault(vcpu,
&vcpu->arch.guest_tlb[index])) {
kvm_err("%s: handling mapped seg tlb fault failed for %p, index: %u, vcpu: %p, ASID: %#lx\n",
__func__, opc, index, vcpu,
read_c0_entryhi());
kvm_mips_dump_guest_tlbs(vcpu);
local_irq_restore(flags);
return KVM_INVALID_INST;
}
inst = *(opc);
}
local_irq_restore(flags);

1
arch/parisc/Kconfig
View File

@ -1,6 +1,5 @@
config PARISC
def_bool y
select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
select ARCH_MIGHT_HAVE_PC_PARPORT
select HAVE_IDE
select HAVE_OPROFILE

1
arch/parisc/configs/c8000_defconfig
View File

@ -245,7 +245,6 @@ CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_PROVE_RCU_DELAY=y
CONFIG_DEBUG_BLOCK_EXT_DEVT=y
CONFIG_LATENCYTOP=y
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
CONFIG_KEYS=y
# CONFIG_CRYPTO_HW is not set
CONFIG_FONTS=y

1
arch/parisc/configs/generic-64bit_defconfig
View File

@ -291,7 +291,6 @@ CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y
# CONFIG_SCHED_DEBUG is not set
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_ECB=m
CONFIG_CRYPTO_PCBC=m

22
arch/parisc/include/asm/uaccess.h
View File

@ -208,13 +208,13 @@ unsigned long copy_in_user(void __user *dst, const void __user *src, unsigned lo
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
extern void copy_from_user_overflow(void)
#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
__compiletime_error("copy_from_user() buffer size is not provably correct")
#else
__compiletime_warning("copy_from_user() buffer size is not provably correct")
#endif
;
extern void __compiletime_error("usercopy buffer size is too small")
__bad_copy_user(void);
static inline void copy_user_overflow(int size, unsigned long count)
{
WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count);
}
static inline unsigned long __must_check copy_from_user(void *to,
const void __user *from,
@ -223,10 +223,12 @@ static inline unsigned long __must_check copy_from_user(void *to,
int sz = __compiletime_object_size(to);
int ret = -EFAULT;
if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n))
if (likely(sz == -1 || sz >= n))
ret = __copy_from_user(to, from, n);
else
copy_from_user_overflow();
else if (!__builtin_constant_p(n))
copy_user_overflow(sz, n);
else
__bad_copy_user();
return ret;
}

4
arch/parisc/include/uapi/asm/errno.h
View File

@ -97,10 +97,10 @@
#define ENOTCONN 235 /* Transport endpoint is not connected */
#define ESHUTDOWN 236 /* Cannot send after transport endpoint shutdown */
#define ETOOMANYREFS 237 /* Too many references: cannot splice */
#define EREFUSED ECONNREFUSED /* for HP's NFS apparently */
#define ETIMEDOUT 238 /* Connection timed out */
#define ECONNREFUSED 239 /* Connection refused */
#define EREMOTERELEASE 240 /* Remote peer released connection */
#define EREFUSED ECONNREFUSED /* for HP's NFS apparently */
#define EREMOTERELEASE 240 /* Remote peer released connection */
#define EHOSTDOWN 241 /* Host is down */
#define EHOSTUNREACH 242 /* No route to host */

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