mirror of https://gitee.com/openkylin/linux.git
27226 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Linus Torvalds
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89cbec71fe |
Merge branch 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull uacess-unaligned removal from Al Viro:
"That stuff had just one user, and an exotic one, at that - binfmt_flat
on arm and m68k"
* 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
kill {__,}{get,put}_user_unaligned()
binfmt_flat: flat_{get,put}_addr_from_rp() should be able to fail
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Linus Torvalds
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4ecd4ff55a |
Merge branch 'for-linus-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML updates from Richard Weinberger: "Mostly fixes for UML: - First round of fixes for PTRACE_GETRESET/SETREGSET - A printf vs printk cleanup - Minor improvements" * 'for-linus-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: Correctly check for PTRACE_GETRESET/SETREGSET um: v2: Use generic NOTES macro um: Add kerneldoc for userspace_tramp() and start_userspace() um: Add kerneldoc for segv_handler um: stub-data.h: remove superfluous include um: userspace - be more verbose in ptrace set regs error um: add dummy ioremap and iounmap functions um: Allow building and running on older hosts um: Avoid longjmp/setjmp symbol clashes with libpthread.a um: console: Ignore console= option um: Use os_warn to print out pre-boot warning/error messages um: Add os_warn() for pre-boot warning/error messages um: Use os_info for the messages on normal path um: Add os_info() for pre-boot information messages um: Use printk instead of printf in make_uml_dir |
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Linus Torvalds
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e37a07e0c2 |
Second batch of KVM updates for v4.13
Common: - add uevents for VM creation/destruction - annotate and properly access RCU-protected objects s390: - rename IOCTL added in the first v4.13 merge x86: - emulate VMLOAD VMSAVE feature in SVM - support paravirtual asynchronous page fault while nested - add Hyper-V userspace interfaces for better migration - improve master clock corner cases - extend internal error reporting after EPT misconfig - correct single-stepping of emulated instructions in SVM - handle MCE during VM entry - fix nVMX VM entry checks and nVMX VMCS shadowing -----BEGIN PGP SIGNATURE----- iQEcBAABCAAGBQJZaOm6AAoJEED/6hsPKofoqO8H/3breVIyVv9mwg7A5+o+6LTq GzV/YXHSC8NtfxZn8ViS/TCziYiBSFv7XiPSodkXbOgYSz8Yya5x9D+dbEH+xgG7 l+LsZEqdSFbHCkvKrMiwSsoXtsT5WygA56+KZiBmu8cvlwqSyXWHFn3ZJ1wKzGq/ zivlkfCoh2m6bGdNmrG9pHUSgxvDh94pXesaVBKy4hgeovY1qjzby3Lo+HuIUzai exuEU1EKRlUIfLK1B2Anp5IIv5Q1lFnMSvD6YSiWYywZb95dN/adsX1bv+MKeOdt TIAgotsWjaAuT9JolAJjfVPHG0+uMBMsWg4Zh9Ra/gPPaSh3KEC2h1++zEYKjvw= =1zII -----END PGP SIGNATURE----- Merge tag 'kvm-4.13-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull more KVM updates from Radim Krčmář: "Second batch of KVM updates for v4.13 Common: - add uevents for VM creation/destruction - annotate and properly access RCU-protected objects s390: - rename IOCTL added in the first v4.13 merge x86: - emulate VMLOAD VMSAVE feature in SVM - support paravirtual asynchronous page fault while nested - add Hyper-V userspace interfaces for better migration - improve master clock corner cases - extend internal error reporting after EPT misconfig - correct single-stepping of emulated instructions in SVM - handle MCE during VM entry - fix nVMX VM entry checks and nVMX VMCS shadowing" * tag 'kvm-4.13-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits) kvm: x86: hyperv: make VP_INDEX managed by userspace KVM: async_pf: Let guest support delivery of async_pf from guest mode KVM: async_pf: Force a nested vmexit if the injected #PF is async_pf KVM: async_pf: Add L1 guest async_pf #PF vmexit handler KVM: x86: Simplify kvm_x86_ops->queue_exception parameter list kvm: x86: hyperv: add KVM_CAP_HYPERV_SYNIC2 KVM: x86: make backwards_tsc_observed a per-VM variable KVM: trigger uevents when creating or destroying a VM KVM: SVM: Enable Virtual VMLOAD VMSAVE feature KVM: SVM: Add Virtual VMLOAD VMSAVE feature definition KVM: SVM: Rename lbr_ctl field in the vmcb control area KVM: SVM: Prepare for new bit definition in lbr_ctl KVM: SVM: handle singlestep exception when skipping emulated instructions KVM: x86: take slots_lock in kvm_free_pit KVM: s390: Fix KVM_S390_GET_CMMA_BITS ioctl definition kvm: vmx: Properly handle machine check during VM-entry KVM: x86: update master clock before computing kvmclock_offset kvm: nVMX: Shadow "high" parts of shadowed 64-bit VMCS fields kvm: nVMX: Fix nested_vmx_check_msr_bitmap_controls kvm: nVMX: Validate the I/O bitmaps on nested VM-entry ... |
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Linus Torvalds
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dcf903d0c9 |
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
- fix new compiler warnings in cavium
- set post-op IV properly in caam (this fixes chaining)
- fix potential use-after-free in atmel in case of EBUSY
- fix sleeping in softirq path in chcr
- disable buggy sha1-avx2 driver (may overread and page fault)
- fix use-after-free on signals in caam
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: cavium - make several functions static
crypto: chcr - Avoid algo allocation in softirq.
crypto: caam - properly set IV after {en,de}crypt
crypto: atmel - only treat EBUSY as transient if backlog
crypto: af_alg - Avoid sock_graft call warning
crypto: caam - fix signals handling
crypto: sha1-ssse3 - Disable avx2
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Roman Kagan
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d3457c877b |
kvm: x86: hyperv: make VP_INDEX managed by userspace
Hyper-V identifies vCPUs by Virtual Processor Index, which can be queried via HV_X64_MSR_VP_INDEX msr. It is defined by the spec as a sequential number which can't exceed the maximum number of vCPUs per VM. APIC ids can be sparse and thus aren't a valid replacement for VP indices. Current KVM uses its internal vcpu index as VP_INDEX. However, to make it predictable and persistent across VM migrations, the userspace has to control the value of VP_INDEX. This patch achieves that, by storing vp_index explicitly on vcpu, and allowing HV_X64_MSR_VP_INDEX to be set from the host side. For compatibility it's initialized to KVM vcpu index. Also a few variables are renamed to make clear distinction betweed this Hyper-V vp_index and KVM vcpu_id (== APIC id). Besides, a new capability, KVM_CAP_HYPERV_VP_INDEX, is added to allow the userspace to skip attempting msr writes where unsupported, to avoid spamming error logs. Signed-off-by: Roman Kagan <rkagan@virtuozzo.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Wanpeng Li
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52a5c155cf |
KVM: async_pf: Let guest support delivery of async_pf from guest mode
Adds another flag bit (bit 2) to MSR_KVM_ASYNC_PF_EN. If bit 2 is 1, async page faults are delivered to L1 as #PF vmexits; if bit 2 is 0, kvm_can_do_async_pf returns 0 if in guest mode. This is similar to what svm.c wanted to do all along, but it is only enabled for Linux as L1 hypervisor. Foreign hypervisors must never receive async page faults as vmexits, because they'd probably be very confused about that. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Wanpeng Li
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adfe20fb48 |
KVM: async_pf: Force a nested vmexit if the injected #PF is async_pf
Add an nested_apf field to vcpu->arch.exception to identify an async page fault, and constructs the expected vm-exit information fields. Force a nested VM exit from nested_vmx_check_exception() if the injected #PF is async page fault. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Wanpeng Li
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1261bfa326 |
KVM: async_pf: Add L1 guest async_pf #PF vmexit handler
This patch adds the L1 guest async page fault #PF vmexit handler, such by L1 similar to ordinary async page fault. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> [Passed insn parameters to kvm_mmu_page_fault().] Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Wanpeng Li
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cfcd20e5ca |
KVM: x86: Simplify kvm_x86_ops->queue_exception parameter list
This patch removes all arguments except the first in kvm_x86_ops->queue_exception since they can extract the arguments from vcpu->arch.exception themselves. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Roman Kagan
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efc479e690 |
kvm: x86: hyperv: add KVM_CAP_HYPERV_SYNIC2
There is a flaw in the Hyper-V SynIC implementation in KVM: when message page or event flags page is enabled by setting the corresponding msr, KVM zeroes it out. This is problematic because on migration the corresponding MSRs are loaded on the destination, so the content of those pages is lost. This went unnoticed so far because the only user of those pages was in-KVM hyperv synic timers, which could continue working despite that zeroing. Newer QEMU uses those pages for Hyper-V VMBus implementation, and zeroing them breaks the migration. Besides, in newer QEMU the content of those pages is fully managed by QEMU, so zeroing them is undesirable even when writing the MSRs from the guest side. To support this new scheme, introduce a new capability, KVM_CAP_HYPERV_SYNIC2, which, when enabled, makes sure that the synic pages aren't zeroed out in KVM. Signed-off-by: Roman Kagan <rkagan@virtuozzo.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Ladi Prosek
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a826faf108 |
KVM: x86: make backwards_tsc_observed a per-VM variable
The backwards_tsc_observed global introduced in commit
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Joe Perches
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0825f49f22 |
x86/efi: move asmlinkage before return type
Make the code like the rest of the kernel. Link: http://lkml.kernel.org/r/1cd3d401626e51ea0e2333a860e76e80bc560a4c.1499284835.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Rik van Riel
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c204d21f22 |
x86/mmap: properly account for stack randomization in mmap_base
When RLIMIT_STACK is, for example, 256MB, the current code results in a gap between the top of the task and mmap_base of 256MB, failing to take into account the amount by which the stack address was randomized. In other words, the stack gets less than RLIMIT_STACK space. Ensure that the gap between the stack and mmap_base always takes stack randomization and the stack guard gap into account. Obtained from Daniel Micay's linux-hardened tree. Link: http://lkml.kernel.org/r/20170622200033.25714-2-riel@redhat.com Signed-off-by: Daniel Micay <danielmicay@gmail.com> Signed-off-by: Rik van Riel <riel@redhat.com> Reported-by: Florian Weimer <fweimer@redhat.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Daniel Micay <danielmicay@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Hugh Dickins <hughd@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Rik van Riel
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bf9eb54438 |
x86: ascii armor the x86_64 boot init stack canary
Use the ascii-armor canary to prevent unterminated C string overflows from being able to successfully overwrite the canary, even if they somehow obtain the canary value. Inspired by execshield ascii-armor and Daniel Micay's linux-hardened tree. Link: http://lkml.kernel.org/r/20170524155751.424-4-riel@redhat.com Signed-off-by: Rik van Riel <riel@redhat.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Daniel Micay <danielmicay@gmail.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Ingo Molnar <mingo@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Daniel Micay
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6974f0c455 |
include/linux/string.h: add the option of fortified string.h functions
This adds support for compiling with a rough equivalent to the glibc _FORTIFY_SOURCE=1 feature, providing compile-time and runtime buffer overflow checks for string.h functions when the compiler determines the size of the source or destination buffer at compile-time. Unlike glibc, it covers buffer reads in addition to writes. GNU C __builtin_*_chk intrinsics are avoided because they would force a much more complex implementation. They aren't designed to detect read overflows and offer no real benefit when using an implementation based on inline checks. Inline checks don't add up to much code size and allow full use of the regular string intrinsics while avoiding the need for a bunch of _chk functions and per-arch assembly to avoid wrapper overhead. This detects various overflows at compile-time in various drivers and some non-x86 core kernel code. There will likely be issues caught in regular use at runtime too. Future improvements left out of initial implementation for simplicity, as it's all quite optional and can be done incrementally: * Some of the fortified string functions (strncpy, strcat), don't yet place a limit on reads from the source based on __builtin_object_size of the source buffer. * Extending coverage to more string functions like strlcat. * It should be possible to optionally use __builtin_object_size(x, 1) for some functions (C strings) to detect intra-object overflows (like glibc's _FORTIFY_SOURCE=2), but for now this takes the conservative approach to avoid likely compatibility issues. * The compile-time checks should be made available via a separate config option which can be enabled by default (or always enabled) once enough time has passed to get the issues it catches fixed. Kees said: "This is great to have. While it was out-of-tree code, it would have blocked at least CVE-2016-3858 from being exploitable (improper size argument to strlcpy()). I've sent a number of fixes for out-of-bounds-reads that this detected upstream already" [arnd@arndb.de: x86: fix fortified memcpy] Link: http://lkml.kernel.org/r/20170627150047.660360-1-arnd@arndb.de [keescook@chromium.org: avoid panic() in favor of BUG()] Link: http://lkml.kernel.org/r/20170626235122.GA25261@beast [keescook@chromium.org: move from -mm, add ARCH_HAS_FORTIFY_SOURCE, tweak Kconfig help] Link: http://lkml.kernel.org/r/20170526095404.20439-1-danielmicay@gmail.com Link: http://lkml.kernel.org/r/1497903987-21002-8-git-send-email-keescook@chromium.org Signed-off-by: Daniel Micay <danielmicay@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Kees Cook <keescook@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Daniel Axtens <dja@axtens.net> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Nicholas Piggin
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05a4a95279 |
kernel/watchdog: split up config options
Split SOFTLOCKUP_DETECTOR from LOCKUP_DETECTOR, and split HARDLOCKUP_DETECTOR_PERF from HARDLOCKUP_DETECTOR. LOCKUP_DETECTOR implies the general boot, sysctl, and programming interfaces for the lockup detectors. An architecture that wants to use a hard lockup detector must define HAVE_HARDLOCKUP_DETECTOR_PERF or HAVE_HARDLOCKUP_DETECTOR_ARCH. Alternatively an arch can define HAVE_NMI_WATCHDOG, which provides the minimum arch_touch_nmi_watchdog, and it otherwise does its own thing and does not implement the LOCKUP_DETECTOR interfaces. sparc is unusual in that it has started to implement some of the interfaces, but not fully yet. It should probably be converted to a full HAVE_HARDLOCKUP_DETECTOR_ARCH. [npiggin@gmail.com: fix] Link: http://lkml.kernel.org/r/20170617223522.66c0ad88@roar.ozlabs.ibm.com Link: http://lkml.kernel.org/r/20170616065715.18390-4-npiggin@gmail.com Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Don Zickus <dzickus@redhat.com> Reviewed-by: Babu Moger <babu.moger@oracle.com> Tested-by: Babu Moger <babu.moger@oracle.com> [sparc] Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Xunlei Pang
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203e9e4121 |
kexec: move vmcoreinfo out of the kernel's .bss section
As Eric said, "what we need to do is move the variable vmcoreinfo_note out of the kernel's .bss section. And modify the code to regenerate and keep this information in something like the control page. Definitely something like this needs a page all to itself, and ideally far away from any other kernel data structures. I clearly was not watching closely the data someone decided to keep this silly thing in the kernel's .bss section." This patch allocates extra pages for these vmcoreinfo_XXX variables, one advantage is that it enhances some safety of vmcoreinfo, because vmcoreinfo now is kept far away from other kernel data structures. Link: http://lkml.kernel.org/r/1493281021-20737-1-git-send-email-xlpang@redhat.com Signed-off-by: Xunlei Pang <xlpang@redhat.com> Tested-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Reviewed-by: Juergen Gross <jgross@suse.com> Suggested-by: Eric Biederman <ebiederm@xmission.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Dave Young <dyoung@redhat.com> Cc: Hari Bathini <hbathini@linux.vnet.ibm.com> Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Janakarajan Natarajan
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89c8a4984f |
KVM: SVM: Enable Virtual VMLOAD VMSAVE feature
Enable the Virtual VMLOAD VMSAVE feature. This is done by setting bit 1 at position B8h in the vmcb. The processor must have nested paging enabled, be in 64-bit mode and have support for the Virtual VMLOAD VMSAVE feature for the bit to be set in the vmcb. Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Janakarajan Natarajan
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76ff359249 |
KVM: SVM: Add Virtual VMLOAD VMSAVE feature definition
Define a new cpufeature definition for Virtual VMLOAD VMSAVE. Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Janakarajan Natarajan
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0dc92119b5 |
KVM: SVM: Rename lbr_ctl field in the vmcb control area
Rename the lbr_ctl variable to better reflect the purpose of the field - provide support for virtualization extensions. Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Janakarajan Natarajan
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8a77e90966 |
KVM: SVM: Prepare for new bit definition in lbr_ctl
The lbr_ctl variable in the vmcb control area is used to enable or disable Last Branch Record (LBR) virtualization. However, this is to be done using only bit 0 of the variable. To correct this and to prepare for a new feature, change the current usage to work only on a particular bit. Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Ladi Prosek
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b742c1e6e7 |
KVM: SVM: handle singlestep exception when skipping emulated instructions
kvm_skip_emulated_instruction handles the singlestep debug exception which is something we almost always want. This commit (specifically the change in rdmsr_interception) makes the debug.flat KVM unit test pass on AMD. Two call sites still call skip_emulated_instruction directly: * In svm_queue_exception where it's used only for moving the rip forward * In task_switch_interception which is analogous to handle_task_switch in VMX Signed-off-by: Ladi Prosek <lprosek@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Radim Krčmář
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fb5307298e |
KVM: x86: take slots_lock in kvm_free_pit
kvm_vm_release() did not have slots_lock when calling
kvm_io_bus_unregister_dev() and this went unnoticed until
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Jim Mattson
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48ae0fb49b |
kvm: vmx: Properly handle machine check during VM-entry
vmx_complete_atomic_exit should call kvm_machine_check for any VM-entry failure due to a machine-check event. Such an exit should be recognized solely by its basic exit reason (i.e. the low 16 bits of the VMCS exit reason field). None of the other VMCS exit information fields contain valid information when the VM-exit is due to "VM-entry failure due to machine-check event". Signed-off-by: Jim Mattson <jmattson@google.com> Reviewed-by: Xiao Guangrong <xiaoguangrong@tencent.com> [Changed VM_EXIT_INTR_INFO condition to better describe its reason.] Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Radim Krčmář
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0bc48bea36 |
KVM: x86: update master clock before computing kvmclock_offset
kvm master clock usually has a different frequency than the kernel boot clock. This is not a problem until the master clock is updated; update uses the current kernel boot clock to compute new kvm clock, which erases any kvm clock cycles that might have built up due to frequency difference over a long period. KVM_SET_CLOCK is one of places where we can safely update master clock as the guest-visible clock is going to be shifted anyway. The problem with current code is that it updates the kvm master clock after updating the offset. If the master clock was enabled before calling KVM_SET_CLOCK, then it might have built up a significant delta from kernel boot clock. In the worst case, the time set by userspace would be shifted by so much that it couldn't have been set at any point during KVM_SET_CLOCK. To fix this, move kvm_gen_update_masterclock() before computing kvmclock_offset, which means that the master clock and kernel boot clock will be sufficiently close together. Another solution would be to replace get_kvmclock_ns() with "ktime_get_boot_ns() + ka->kvmclock_offset", which is marginally more accurate, but would break symmetry with KVM_GET_CLOCK. Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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Jim Mattson
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85fd514e24 |
kvm: nVMX: Shadow "high" parts of shadowed 64-bit VMCS fields
Inconsistencies result from shadowing only accesses to the full 64-bits of a 64-bit VMCS field, but not shadowing accesses to the high 32-bits of the field. The "high" part of a 64-bit field should be shadowed whenever the full 64-bit field is shadowed. Signed-off-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Jim Mattson
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5fa99cbe7b |
kvm: nVMX: Fix nested_vmx_check_msr_bitmap_controls
Allow the L1 guest to specify the last page of addressable guest
physical memory for an L2 MSR permission bitmap. Also remove the
vmcs12_read_any() check that should never fail.
Fixes:
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Jim Mattson
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56a205100d |
kvm: nVMX: Validate the I/O bitmaps on nested VM-entry
According to the SDM, if the "use I/O bitmaps" VM-execution control is 1, bits 11:0 of each I/O-bitmap address must be 0. Neither address should set any bits beyond the processor's physical-address width. Signed-off-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Jim Mattson
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7cdc2d62f9 |
kvm: nVMX: Don't set vmcs12 to "launched" when VMLAUNCH fails
The VMCS launch state is not set to "launched" unless the VMLAUNCH actually succeeds. VMLAUNCH failure includes VM-exits with bit 31 set. Note that this change does not address the general problem that a failure to launch/resume vmcs02 (i.e. vmx->fail) is not handled correctly. Signed-off-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Kees Cook
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eab09532d4 |
binfmt_elf: use ELF_ET_DYN_BASE only for PIE
The ELF_ET_DYN_BASE position was originally intended to keep loaders
away from ET_EXEC binaries. (For example, running "/lib/ld-linux.so.2
/bin/cat" might cause the subsequent load of /bin/cat into where the
loader had been loaded.)
With the advent of PIE (ET_DYN binaries with an INTERP Program Header),
ELF_ET_DYN_BASE continued to be used since the kernel was only looking
at ET_DYN. However, since ELF_ET_DYN_BASE is traditionally set at the
top 1/3rd of the TASK_SIZE, a substantial portion of the address space
is unused.
For 32-bit tasks when RLIMIT_STACK is set to RLIM_INFINITY, programs are
loaded above the mmap region. This means they can be made to collide
(CVE-2017-1000370) or nearly collide (CVE-2017-1000371) with
pathological stack regions.
Lowering ELF_ET_DYN_BASE solves both by moving programs below the mmap
region in all cases, and will now additionally avoid programs falling
back to the mmap region by enforcing MAP_FIXED for program loads (i.e.
if it would have collided with the stack, now it will fail to load
instead of falling back to the mmap region).
To allow for a lower ELF_ET_DYN_BASE, loaders (ET_DYN without INTERP)
are loaded into the mmap region, leaving space available for either an
ET_EXEC binary with a fixed location or PIE being loaded into mmap by
the loader. Only PIE programs are loaded offset from ELF_ET_DYN_BASE,
which means architectures can now safely lower their values without risk
of loaders colliding with their subsequently loaded programs.
For 64-bit, ELF_ET_DYN_BASE is best set to 4GB to allow runtimes to use
the entire 32-bit address space for 32-bit pointers.
Thanks to PaX Team, Daniel Micay, and Rik van Riel for inspiration and
suggestions on how to implement this solution.
Fixes:
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Andrey Ryabinin
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4d461333f1 |
x86/kasan: don't allocate extra shadow memory
We used to read several bytes of the shadow memory in advance. Therefore additional shadow memory mapped to prevent crash if speculative load would happen near the end of the mapped shadow memory. Now we don't have such speculative loads, so we no longer need to map additional shadow memory. Link: http://lkml.kernel.org/r/20170601162338.23540-2-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alexander Potapenko <glider@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Richard Weinberger
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61e8d46245 |
um: Correctly check for PTRACE_GETRESET/SETREGSET
When checking for PTRACE_GETRESET/SETREGSET, make sure that the correct header file is included. We need linux/ptrace.h which contains all ptrace UAPI related defines. Otherwise #if defined(PTRACE_GETRESET) is always false. Cc: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at> |
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Paolo Bonzini
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70bcd708df |
KVM: vmx: expose more information for KVM_INTERNAL_ERROR_DELIVERY_EV exits
This exit ended up being reported, but the currently exposed data does not provide much of a starting point for debugging. In the reported case, the vmexit was an EPT misconfiguration (MMIO access). Let userspace report ethe exit qualification and, if relevant, the GPA. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Linus Torvalds
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2b97620341 |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"The x86 updates contain:
- A fix for a longstanding PAT bug, where PAT was reported on CPUs
that do not support it, which leads to wrong caching attributes and
missing MTRR updates
- Prevent overwriting of the e820 firmware table, which causes kexec
kernels to lose the fake mptable which is stored there.
- Cleanup of the UV/BAU code, removing unused code and making local
functions static"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/e820: Introduce the bootloader provided e820_table_firmware[] table
x86/boot/e820: Rename the e820_table_firmware to e820_table_kexec
x86/boot/e820: Avoid overwriting e820_table_firmware
x86/mm/pat: Don't report PAT on CPUs that don't support it
x86/platform/uv/BAU: Minor cleanup, make some local functions static
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Linus Torvalds
|
f263fbb8d6 |
pci-v4.13-changes
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Merge tag 'pci-v4.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- add sysfs max_link_speed/width, current_link_speed/width (Wong Vee
Khee)
- make host bridge IRQ mapping much more generic (Matthew Minter,
Lorenzo Pieralisi)
- convert most drivers to pci_scan_root_bus_bridge() (Lorenzo
Pieralisi)
- mutex sriov_configure() (Jakub Kicinski)
- mutex pci_error_handlers callbacks (Christoph Hellwig)
- split ->reset_notify() into ->reset_prepare()/reset_done()
(Christoph Hellwig)
- support multiple PCIe portdrv interrupts for MSI as well as MSI-X
(Gabriele Paoloni)
- allocate MSI/MSI-X vector for Downstream Port Containment (Gabriele
Paoloni)
- fix MSI IRQ affinity pre/post/min_vecs issue (Michael Hernandez)
- test INTx masking during enumeration, not at run-time (Piotr Gregor)
- avoid using device_may_wakeup() for runtime PM (Rafael J. Wysocki)
- restore the status of PCI devices across hibernation (Chen Yu)
- keep parent resources that start at 0x0 (Ard Biesheuvel)
- enable ECRC only if device supports it (Bjorn Helgaas)
- restore PRI and PASID state after Function-Level Reset (CQ Tang)
- skip DPC event if device is not present (Keith Busch)
- check domain when matching SMBIOS info (Sujith Pandel)
- mark Intel XXV710 NIC INTx masking as broken (Alex Williamson)
- avoid AMD SB7xx EHCI USB wakeup defect (Kai-Heng Feng)
- work around long-standing Macbook Pro poweroff issue (Bjorn Helgaas)
- add Switchtec "running" status flag (Logan Gunthorpe)
- fix dra7xx incorrect RW1C IRQ register usage (Arvind Yadav)
- modify xilinx-nwl IRQ chip for legacy interrupts (Bharat Kumar
Gogada)
- move VMD SRCU cleanup after bus, child device removal (Jon Derrick)
- add Faraday clock handling (Linus Walleij)
- configure Rockchip MPS and reorganize (Shawn Lin)
- limit Qualcomm TLP size to 2K (hardware issue) (Srinivas Kandagatla)
- support Tegra MSI 64-bit addressing (Thierry Reding)
- use Rockchip normal (not privileged) register bank (Shawn Lin)
- add HiSilicon Kirin SoC PCIe controller driver (Xiaowei Song)
- add Sigma Designs Tango SMP8759 PCIe controller driver (Marc
Gonzalez)
- add MediaTek PCIe host controller support (Ryder Lee)
- add Qualcomm IPQ4019 support (John Crispin)
- add HyperV vPCI protocol v1.2 support (Jork Loeser)
- add i.MX6 regulator support (Quentin Schulz)
* tag 'pci-v4.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (113 commits)
PCI: tango: Add Sigma Designs Tango SMP8759 PCIe host bridge support
PCI: Add DT binding for Sigma Designs Tango PCIe controller
PCI: rockchip: Use normal register bank for config accessors
dt-bindings: PCI: Add documentation for MediaTek PCIe
PCI: Remove __pci_dev_reset() and pci_dev_reset()
PCI: Split ->reset_notify() method into ->reset_prepare() and ->reset_done()
PCI: xilinx: Make of_device_ids const
PCI: xilinx-nwl: Modify IRQ chip for legacy interrupts
PCI: vmd: Move SRCU cleanup after bus, child device removal
PCI: vmd: Correct comment: VMD domains start at 0x10000, not 0x1000
PCI: versatile: Add local struct device pointers
PCI: tegra: Do not allocate MSI target memory
PCI: tegra: Support MSI 64-bit addressing
PCI: rockchip: Use local struct device pointer consistently
PCI: rockchip: Check for clk_prepare_enable() errors during resume
MAINTAINERS: Remove Wenrui Li as Rockchip PCIe driver maintainer
PCI: rockchip: Configure RC's MPS setting
PCI: rockchip: Reconfigure configuration space header type
PCI: rockchip: Split out rockchip_pcie_cfg_configuration_accesses()
PCI: rockchip: Move configuration accesses into rockchip_pcie_cfg_atu()
...
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Linus Torvalds
|
09b56d5a41 |
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King: - add support for ftrace-with-registers, which is needed for kgraft and other ftrace tools - support for mremap() for the sigpage/vDSO so that checkpoint/restore can work - add timestamps to each line of the register dump output - remove the unused KTHREAD_SIZE from nommu - align the ARM bitops APIs with the generic API (using unsigned long pointers rather than void pointers) - make the configuration of userspace Thumb support an expert option so that we can default it on, and avoid some hard to debug userspace crashes * 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 8684/1: NOMMU: Remove unused KTHREAD_SIZE definition ARM: 8683/1: ARM32: Support mremap() for sigpage/vDSO ARM: 8679/1: bitops: Align prototypes to generic API ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS ARM: make configuration of userspace Thumb support an expert option ARM: 8673/1: Fix __show_regs output timestamps |
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Linus Torvalds
|
98ced886dd |
Kbuild thin archives updates for v4.13
Thin archives migration by Nicholas Piggin.
THIN_ARCHIVES has been available for a while as an optional feature
only for PowerPC architecture, but we do not need two different
intermediate-artifact schemes.
Using thin archives instead of conventional incremental linking has
various advantages:
- save disk space for builds
- speed-up building a little
- fix some link issues (for example, allyesconfig on ARM) due to
more flexibility for the final linking
- work better with dead code elimination we are planning
As discussed before, this migration has been done unconditionally
so that any problems caused by this will show up with "git bisect".
With testing with 0-day and linux-next, some architectures actually
showed up problems, but they were trivial and all fixed now.
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Merge tag 'kbuild-thinar-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild thin archives updates from Masahiro Yamada:
"Thin archives migration by Nicholas Piggin.
THIN_ARCHIVES has been available for a while as an optional feature
only for PowerPC architecture, but we do not need two different
intermediate-artifact schemes.
Using thin archives instead of conventional incremental linking has
various advantages:
- save disk space for builds
- speed-up building a little
- fix some link issues (for example, allyesconfig on ARM) due to more
flexibility for the final linking
- work better with dead code elimination we are planning
As discussed before, this migration has been done unconditionally so
that any problems caused by this will show up with "git bisect".
With testing with 0-day and linux-next, some architectures actually
showed up problems, but they were trivial and all fixed now"
* tag 'kbuild-thinar-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
tile: remove unneeded extra-y in Makefile
kbuild: thin archives make default for all archs
x86/um: thin archives build fix
tile: thin archives fix linking
ia64: thin archives fix linking
sh: thin archives fix linking
kbuild: handle libs-y archives separately from built-in.o archives
kbuild: thin archives use P option to ar
kbuild: thin archives final link close --whole-archives option
ia64: remove unneeded extra-y in Makefile.gate
tile: fix dependency and .*.cmd inclusion for incremental build
sparc64: Use indirect calls in hamming weight stubs
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Linus Torvalds
|
58f051fc98 |
Kbuild updates for v4.13
- Clean up Makefiles and scripts - Improve clang support - Remove unneeded genhdr-y syntax - Remove unneeded cc-option-align macro - Introduce __cc-option macro and use it to fix x86 boot code compiler flags -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJZXrlEAAoJED2LAQed4NsGOQ0P/ic6kvcXoquvO47NeZeGgprN Ffy7yt06ZpKE6ntKT2YGf8vIkBADAnGBmP9lFga7JRTFrBS/4fDCEoosjb7a7yYG 6QZ2CCVkpyUt5rizSFPiQ2A1EIsIvhQEHBGdE3upbX4dC6or/MRwWnyudYvFQYWc Ft5VGqENHxVIMCPm5pmNrZH4lOUv13KFlEWHFozPtwKXYIp8KZw88kJVJODPOuhM yWuXEkcg9f+SEjNeSn7uZ0P4JGDqeQz16EKW4/cMdERaqtb5diPNhUBIQ9X5qjR+ wQg//tMFKjveKPr8bNHnzjHCwz7xto0GBnqYoXQO4cxMm7heNeFWAS09YnDd58JS hb3BCF3QpojaLQUFb/elo8Gaolx4FepKVnvbCCV03TJCB3zyKTSaAx0cJxoRCajd iR5FEUDA0pacM6380ifYEWUu98LgWxhJfrcQuJ1F+g3/8uoMqLIIpC7YsdnEGzy2 Zhcz+Id5YMBla4w9ceUf9Zm+scCNxySWkANYPxC+QxwtNnDU5JrNhOnMXO/x4BEm rBICh3jY1gJRD/nuQ3L0XXX9taXD+z19DBsngt2XgVX6ec0EitZEkoR/f1yIrCNB zFfOeM2KD7Rg4iAzmE/L1clwJufXbZbRNKJjg5o2/1t2+TgRCnYNkCzCbr/Kqi8a ugje+BAynfUrARSJH1Uk =0ZOV -----END PGP SIGNATURE----- Merge tag 'kbuild-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Clean up Makefiles and scripts - Improve clang support - Remove unneeded genhdr-y syntax - Remove unneeded cc-option-align macro - Introduce __cc-option macro and use it to fix x86 boot code compiler flags * tag 'kbuild-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: improve comments on KBUILD_SRC x86/build: Specify stack alignment for clang x86/build: Use __cc-option for boot code compiler options kbuild: Add __cc-option macro kbuild: remove cc-option-align kbuild: replace genhdr-y with generated-y kbuild: clang: Disable 'address-of-packed-member' warning kbuild: remove duplicated arch/*/include/generated/uapi include path kbuild: speed up checksyscalls.sh kbuild: simplify silent build (-s) detection |
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Linus Torvalds
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d691b7e7d1 |
powerpc updates for 4.13
Highlights include: - Support for STRICT_KERNEL_RWX on 64-bit server CPUs. - Platform support for FSP2 (476fpe) board - Enable ZONE_DEVICE on 64-bit server CPUs. - Generic & powerpc spin loop primitives to optimise busy waiting - Convert VDSO update function to use new update_vsyscall() interface - Optimisations to hypercall/syscall/context-switch paths - Improvements to the CPU idle code on Power8 and Power9. As well as many other fixes and improvements. Thanks to: Akshay Adiga, Andrew Donnellan, Andrew Jeffery, Anshuman Khandual, Anton Blanchard, Balbir Singh, Benjamin Herrenschmidt, Christophe Leroy, Christophe Lombard, Colin Ian King, Dan Carpenter, Gautham R. Shenoy, Hari Bathini, Ian Munsie, Ivan Mikhaylov, Javier Martinez Canillas, Madhavan Srinivasan, Masahiro Yamada, Matt Brown, Michael Neuling, Michal Suchanek, Murilo Opsfelder Araujo, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Pavel Machek, Russell Currey, Santosh Sivaraj, Stephen Rothwell, Thiago Jung Bauermann, Yang Li. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJZXyPCAAoJEFHr6jzI4aWAI9QQAISf2x5y//cqCi4ISyQB5pTq KLS/yQajNkQOw7c0fzBZOaH5Xd/SJ6AcKWDg8yDlpDR3+sRRsr98iIRECgKS5I7/ DxD9ywcbSoMXFQQo1ZMCp5CeuMUIJRtugBnUQM+JXCSUCPbznCY5DchDTLyTBTpO MeMVhI//JxthhoOMA9MudiEGaYCU9ho442Z4OJUSiLUv8WRbvQX9pTqoc4vx1fxA BWf2mflztBVcIfKIyxIIIlDLukkMzix6gSYPMCbC7lzkbnU7JSqKiheJXjo1gJS2 ePHKDxeNR2/QP0g/j3aT/MR1uTt9MaNBSX3gANE1xQ9OoJ8m1sOtCO4gNbSdLWae eXhDnoiEp930DRZOeEioOItuWWoxFaMyYk3BMmRKV4QNdYL3y3TRVeL2/XmRGqYL Lxz4IY/x5TteFEJNGcRX90uizNSi8AaEXPF16pUk8Ctt6eH3ZSwPMv2fHeYVCMr0 KFlKHyaPEKEoztyzLcUR6u9QB56yxDN58bvLpd32AeHvKhqyxFoySy59x9bZbatn B2y8mmDItg860e0tIG6jrtplpOVvL8i5jla5RWFVoQDuxxrLAds3vG9JZQs+eRzx Fiic93bqeUAS6RzhXbJ6QQJYIyhE7yqpcgv7ME1W87SPef3HPBk9xlp3yIDwdA2z bBDvrRnvupusz8qCWrxe =w8rj -----END PGP SIGNATURE----- Merge tag 'powerpc-4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Highlights include: - Support for STRICT_KERNEL_RWX on 64-bit server CPUs. - Platform support for FSP2 (476fpe) board - Enable ZONE_DEVICE on 64-bit server CPUs. - Generic & powerpc spin loop primitives to optimise busy waiting - Convert VDSO update function to use new update_vsyscall() interface - Optimisations to hypercall/syscall/context-switch paths - Improvements to the CPU idle code on Power8 and Power9. As well as many other fixes and improvements. Thanks to: Akshay Adiga, Andrew Donnellan, Andrew Jeffery, Anshuman Khandual, Anton Blanchard, Balbir Singh, Benjamin Herrenschmidt, Christophe Leroy, Christophe Lombard, Colin Ian King, Dan Carpenter, Gautham R. Shenoy, Hari Bathini, Ian Munsie, Ivan Mikhaylov, Javier Martinez Canillas, Madhavan Srinivasan, Masahiro Yamada, Matt Brown, Michael Neuling, Michal Suchanek, Murilo Opsfelder Araujo, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Pavel Machek, Russell Currey, Santosh Sivaraj, Stephen Rothwell, Thiago Jung Bauermann, Yang Li" * tag 'powerpc-4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (158 commits) powerpc/Kconfig: Enable STRICT_KERNEL_RWX for some configs powerpc/mm/radix: Implement STRICT_RWX/mark_rodata_ro() for Radix powerpc/mm/hash: Implement mark_rodata_ro() for hash powerpc/vmlinux.lds: Align __init_begin to 16M powerpc/lib/code-patching: Use alternate map for patch_instruction() powerpc/xmon: Add patch_instruction() support for xmon powerpc/kprobes/optprobes: Use patch_instruction() powerpc/kprobes: Move kprobes over to patch_instruction() powerpc/mm/radix: Fix execute permissions for interrupt_vectors powerpc/pseries: Fix passing of pp0 in updatepp() and updateboltedpp() powerpc/64s: Blacklist rtas entry/exit from kprobes powerpc/64s: Blacklist functions invoked on a trap powerpc/64s: Un-blacklist system_call() from kprobes powerpc/64s: Move system_call() symbol to just after setting MSR_EE powerpc/64s: Blacklist system_call() and system_call_common() from kprobes powerpc/64s: Convert .L__replay_interrupt_return to a local label powerpc64/elfv1: Only dereference function descriptor for non-text symbols cxl: Export library to support IBM XSL powerpc/dts: Use #include "..." to include local DT powerpc/perf/hv-24x7: Aggregate result elements on POWER9 SMT8 ... |
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Linus Torvalds
|
b6ffe9ba46 |
libnvdimm for 4.13
* Introduce the _flushcache() family of memory copy helpers and use them
for persistent memory write operations on x86. The _flushcache()
semantic indicates that the cache is either bypassed for the copy
operation (movnt) or any lines dirtied by the copy operation are
written back (clwb, clflushopt, or clflush).
* Extend dax_operations with ->copy_from_iter() and ->flush()
operations. These operations and other infrastructure updates allow
all persistent memory specific dax functionality to be pushed into
libnvdimm and the pmem driver directly. It also allows dax-specific
sysfs attributes to be linked to a host device, for example:
/sys/block/pmem0/dax/write_cache
* Add support for the new NVDIMM platform/firmware mechanisms introduced
in ACPI 6.2 and UEFI 2.7. This support includes the v1.2 namespace
label format, extensions to the address-range-scrub command set, new
error injection commands, and a new BTT (block-translation-table)
layout. These updates support inter-OS and pre-OS compatibility.
* Fix a longstanding memory corruption bug in nfit_test.
* Make the pmem and nvdimm-region 'badblocks' sysfs files poll(2)
capable.
* Miscellaneous fixes and small updates across libnvdimm and the nfit
driver.
Acknowledgements that came after the branch was pushed:
commit
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Linus Torvalds
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9f45efb928 |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: - a few hotfixes - various misc updates - ocfs2 updates - most of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (108 commits) mm, memory_hotplug: move movable_node to the hotplug proper mm, memory_hotplug: drop CONFIG_MOVABLE_NODE mm, memory_hotplug: drop artificial restriction on online/offline mm: memcontrol: account slab stats per lruvec mm: memcontrol: per-lruvec stats infrastructure mm: memcontrol: use generic mod_memcg_page_state for kmem pages mm: memcontrol: use the node-native slab memory counters mm: vmstat: move slab statistics from zone to node counters mm/zswap.c: delete an error message for a failed memory allocation in zswap_dstmem_prepare() mm/zswap.c: improve a size determination in zswap_frontswap_init() mm/zswap.c: delete an error message for a failed memory allocation in zswap_pool_create() mm/swapfile.c: sort swap entries before free mm/oom_kill: count global and memory cgroup oom kills mm: per-cgroup memory reclaim stats mm: kmemleak: treat vm_struct as alternative reference to vmalloc'ed objects mm: kmemleak: factor object reference updating out of scan_block() mm: kmemleak: slightly reduce the size of some structures on 64-bit architectures mm, mempolicy: don't check cpuset seqlock where it doesn't matter mm, cpuset: always use seqlock when changing task's nodemask mm, mempolicy: simplify rebinding mempolicies when updating cpusets ... |
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Linus Torvalds
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dc502142b6 |
Merge branch 'uaccess.strlen' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull user access str* updates from Al Viro: "uaccess str...() dead code removal" * 'uaccess.strlen' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: s390 keyboard.c: don't open-code strndup_user() mips: get rid of unused __strnlen_user() get rid of unused __strncpy_from_user() instances kill strlen_user() |
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Linus Torvalds
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c856863988 |
Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull misc compat stuff updates from Al Viro:
"This part is basically untangling various compat stuff. Compat
syscalls moved to their native counterparts, getting rid of quite a
bit of double-copying and/or set_fs() uses. A lot of field-by-field
copyin/copyout killed off.
- kernel/compat.c is much closer to containing just the
copyin/copyout of compat structs. Not all compat syscalls are gone
from it yet, but it's getting there.
- ipc/compat_mq.c killed off completely.
- block/compat_ioctl.c cleaned up; floppy compat ioctls moved to
drivers/block/floppy.c where they belong. Yes, there are several
drivers that implement some of the same ioctls. Some are m68k and
one is 32bit-only pmac. drivers/block/floppy.c is the only one in
that bunch that can be built on biarch"
* 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
mqueue: move compat syscalls to native ones
usbdevfs: get rid of field-by-field copyin
compat_hdio_ioctl: get rid of set_fs()
take floppy compat ioctls to sodding floppy.c
ipmi: get rid of field-by-field __get_user()
ipmi: get COMPAT_IPMICTL_RECEIVE_MSG in sync with the native one
rt_sigtimedwait(): move compat to native
select: switch compat_{get,put}_fd_set() to compat_{get,put}_bitmap()
put_compat_rusage(): switch to copy_to_user()
sigpending(): move compat to native
getrlimit()/setrlimit(): move compat to native
times(2): move compat to native
compat_{get,put}_bitmap(): use unsafe_{get,put}_user()
fb_get_fscreeninfo(): don't bother with do_fb_ioctl()
do_sigaltstack(): lift copying to/from userland into callers
take compat_sys_old_getrlimit() to native syscall
trim __ARCH_WANT_SYS_OLD_GETRLIMIT
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Linus Torvalds
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f72e24a124 |
This is the first pull request for the new dma-mapping subsystem
In this new subsystem we'll try to properly maintain all the generic
code related to dma-mapping, and will further consolidate arch code
into common helpers.
This pull request contains:
- removal of the DMA_ERROR_CODE macro, replacing it with calls
to ->mapping_error so that the dma_map_ops instances are
more self contained and can be shared across architectures (me)
- removal of the ->set_dma_mask method, which duplicates the
->dma_capable one in terms of functionality, but requires more
duplicate code.
- various updates for the coherent dma pool and related arm code
(Vladimir)
- various smaller cleanups (me)
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Merge tag 'dma-mapping-4.13' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping infrastructure from Christoph Hellwig:
"This is the first pull request for the new dma-mapping subsystem
In this new subsystem we'll try to properly maintain all the generic
code related to dma-mapping, and will further consolidate arch code
into common helpers.
This pull request contains:
- removal of the DMA_ERROR_CODE macro, replacing it with calls to
->mapping_error so that the dma_map_ops instances are more self
contained and can be shared across architectures (me)
- removal of the ->set_dma_mask method, which duplicates the
->dma_capable one in terms of functionality, but requires more
duplicate code.
- various updates for the coherent dma pool and related arm code
(Vladimir)
- various smaller cleanups (me)"
* tag 'dma-mapping-4.13' of git://git.infradead.org/users/hch/dma-mapping: (56 commits)
ARM: dma-mapping: Remove traces of NOMMU code
ARM: NOMMU: Set ARM_DMA_MEM_BUFFERABLE for M-class cpus
ARM: NOMMU: Introduce dma operations for noMMU
drivers: dma-mapping: allow dma_common_mmap() for NOMMU
drivers: dma-coherent: Introduce default DMA pool
drivers: dma-coherent: Account dma_pfn_offset when used with device tree
dma: Take into account dma_pfn_offset
dma-mapping: replace dmam_alloc_noncoherent with dmam_alloc_attrs
dma-mapping: remove dmam_free_noncoherent
crypto: qat - avoid an uninitialized variable warning
au1100fb: remove a bogus dma_free_nonconsistent call
MAINTAINERS: add entry for dma mapping helpers
powerpc: merge __dma_set_mask into dma_set_mask
dma-mapping: remove the set_dma_mask method
powerpc/cell: use the dma_supported method for ops switching
powerpc/cell: clean up fixed mapping dma_ops initialization
tile: remove dma_supported and mapping_error methods
xen-swiotlb: remove xen_swiotlb_set_dma_mask
arm: implement ->dma_supported instead of ->set_dma_mask
mips/loongson64: implement ->dma_supported instead of ->set_dma_mask
...
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Linus Torvalds
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6e6c5b9606 |
xen: features and fixes for 4.13-rc1
-----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAABAgAGBQJZXdVXAAoJELDendYovxMvVA0IAITmvH21SDTFiilKCOrxhCv0 W3q3cOhZA4D+UtTqqIm/os/et08n72864s0mUFoY4PxETaUsb1jBav7z7Tod2c6B wh26UgIAhVO3ZewFSmpdPYoW0l3elC5JUMkVMfwSvHkROaU+YDEYUsLWGuIHZiiy V/kIskcKe08HLObU//BMjfFusmMHmQSg+TruyqRWodlWj4Rwm7q5fNZ/xaap1UCM O7GcHyq1k699w5YYTlIEkLWsX/pGM+auGSlT1xdjJEc2bpjH8ps0xbvAn6dsAKsE yoDyxQWtX2wBUXCqF0hXYAB2r1iFx2aFfLQjwc7p+V6BvxpWwSsC7Ur4QIDnm3E= =OLb7 -----END PGP SIGNATURE----- Merge tag 'for-linus-4.13-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from Juergen Gross: "Other than fixes and cleanups it contains: - support > 32 VCPUs at domain restore - support for new sysfs nodes related to Xen - some performance tuning for Linux running as Xen guest" * tag 'for-linus-4.13-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: x86/xen: allow userspace access during hypercalls x86: xen: remove unnecessary variable in xen_foreach_remap_area() xen: allocate page for shared info page from low memory xen: avoid deadlock in xenbus driver xen: add sysfs node for hypervisor build id xen: sync include/xen/interface/version.h xen: add sysfs node for guest type doc,xen: document hypervisor sysfs nodes for xen xen/vcpu: Handle xen_vcpu_setup() failure at boot xen/vcpu: Handle xen_vcpu_setup() failure in hotplug xen/pv: Fix OOPS on restore for a PV, !SMP domain xen/pvh*: Support > 32 VCPUs at domain restore xen/vcpu: Simplify xen_vcpu related code xen-evtchn: Bind dyn evtchn:qemu-dm interrupt to next online VCPU xen: avoid type warning in xchg_xen_ulong xen: fix HYPERVISOR_dm_op() prototype xen: don't print error message in case of missing Xenstore entry arm/xen: Adjust one function call together with a variable assignment arm/xen: Delete an error message for a failed memory allocation in __set_phys_to_machine_multi() arm/xen: Improve a size determination in __set_phys_to_machine_multi() |
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Linus Torvalds
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c136b84393 |
PPC:
- Better machine check handling for HV KVM - Ability to support guests with threads=2, 4 or 8 on POWER9 - Fix for a race that could cause delayed recognition of signals - Fix for a bug where POWER9 guests could sleep with interrupts pending. ARM: - VCPU request overhaul - allow timer and PMU to have their interrupt number selected from userspace - workaround for Cavium erratum 30115 - handling of memory poisonning - the usual crop of fixes and cleanups s390: - initial machine check forwarding - migration support for the CMMA page hinting information - cleanups and fixes x86: - nested VMX bugfixes and improvements - more reliable NMI window detection on AMD - APIC timer optimizations Generic: - VCPU request overhaul + documentation of common code patterns - kvm_stat improvements There is a small conflict in arch/s390 due to an arch-wide field rename. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQEcBAABAgAGBQJZW4XTAAoJEL/70l94x66DkhMH/izpk54KI17PtyQ9VYI2sYeZ BWK6Kl886g3ij4pFi3pECqjDJzWaa3ai+vFfzzpJJ8OkCJT5Rv4LxC5ERltVVmR8 A3T1I/MRktSC0VJLv34daPC2z4Lco/6SPipUpPnL4bE2HATKed4vzoOjQ3tOeGTy dwi7TFjKwoVDiM7kPPDRnTHqCe5G5n13sZ49dBe9WeJ7ttJauWqoxhlYosCGNPEj g8ZX8+cvcAhVnz5uFL8roqZ8ygNEQq2mgkU18W8ZZKuiuwR0gdsG0gSBFNTdwIMK NoreRKMrw0+oLXTIB8SZsoieU6Qi7w3xMAMabe8AJsvYtoersugbOmdxGCr1lsA= =OD7H -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM updates from Paolo Bonzini: "PPC: - Better machine check handling for HV KVM - Ability to support guests with threads=2, 4 or 8 on POWER9 - Fix for a race that could cause delayed recognition of signals - Fix for a bug where POWER9 guests could sleep with interrupts pending. ARM: - VCPU request overhaul - allow timer and PMU to have their interrupt number selected from userspace - workaround for Cavium erratum 30115 - handling of memory poisonning - the usual crop of fixes and cleanups s390: - initial machine check forwarding - migration support for the CMMA page hinting information - cleanups and fixes x86: - nested VMX bugfixes and improvements - more reliable NMI window detection on AMD - APIC timer optimizations Generic: - VCPU request overhaul + documentation of common code patterns - kvm_stat improvements" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (124 commits) Update my email address kvm: vmx: allow host to access guest MSR_IA32_BNDCFGS x86: kvm: mmu: use ept a/d in vmcs02 iff used in vmcs12 kvm: x86: mmu: allow A/D bits to be disabled in an mmu x86: kvm: mmu: make spte mmio mask more explicit x86: kvm: mmu: dead code thanks to access tracking KVM: PPC: Book3S: Fix typo in XICS-on-XIVE state saving code KVM: PPC: Book3S HV: Close race with testing for signals on guest entry KVM: PPC: Book3S HV: Simplify dynamic micro-threading code KVM: x86: remove ignored type attribute KVM: LAPIC: Fix lapic timer injection delay KVM: lapic: reorganize restart_apic_timer KVM: lapic: reorganize start_hv_timer kvm: nVMX: Check memory operand to INVVPID KVM: s390: Inject machine check into the nested guest KVM: s390: Inject machine check into the guest tools/kvm_stat: add new interactive command 'b' tools/kvm_stat: add new command line switch '-i' tools/kvm_stat: fix error on interactive command 'g' KVM: SVM: suppress unnecessary NMI singlestep on GIF=0 and nested exit ... |
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Punit Agrawal
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7868a2087e |
mm/hugetlb: add size parameter to huge_pte_offset()
A poisoned or migrated hugepage is stored as a swap entry in the page tables. On architectures that support hugepages consisting of contiguous page table entries (such as on arm64) this leads to ambiguity in determining the page table entry to return in huge_pte_offset() when a poisoned entry is encountered. Let's remove the ambiguity by adding a size parameter to convey additional information about the requested address. Also fixup the definition/usage of huge_pte_offset() throughout the tree. Link: http://lkml.kernel.org/r/20170522133604.11392-4-punit.agrawal@arm.com Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Acked-by: Steve Capper <steve.capper@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: James Hogan <james.hogan@imgtec.com> (odd fixer:METAG ARCHITECTURE) Cc: Ralf Baechle <ralf@linux-mips.org> (supporter:MIPS) Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Aneesh Kumar K.V
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e1073d1e79 |
mm/hugetlb: clean up ARCH_HAS_GIGANTIC_PAGE
This moves the #ifdef in C code to a Kconfig dependency. Also we move the gigantic_page_supported() function to be arch specific. This allows architectures to conditionally enable runtime allocation of gigantic huge page. Architectures like ppc64 supports different gigantic huge page size (16G and 1G) based on the translation mode selected. This provides an opportunity for ppc64 to enable runtime allocation only w.r.t 1G hugepage. No functional change in this patch. Link: http://lkml.kernel.org/r/1494995292-4443-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Michal Hocko
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3d79a728f9 |
mm, memory_hotplug: replace for_device by want_memblock in arch_add_memory
arch_add_memory gets for_device argument which then controls whether we want to create memblocks for created memory sections. Simplify the logic by telling whether we want memblocks directly rather than going through pointless negation. This also makes the api easier to understand because it is clear what we want rather than nothing telling for_device which can mean anything. This shouldn't introduce any functional change. Link: http://lkml.kernel.org/r/20170515085827.16474-13-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Tested-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Daniel Kiper <daniel.kiper@oracle.com> Cc: David Rientjes <rientjes@google.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Reza Arbab <arbab@linux.vnet.ibm.com> Cc: Tobias Regnery <tobias.regnery@gmail.com> Cc: Toshi Kani <toshi.kani@hpe.com> Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Michal Hocko
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f1dd2cd13c |
mm, memory_hotplug: do not associate hotadded memory to zones until online
The current memory hotplug implementation relies on having all the struct pages associate with a zone/node during the physical hotplug phase (arch_add_memory->__add_pages->__add_section->__add_zone). In the vast majority of cases this means that they are added to ZONE_NORMAL. This has been so since |