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Linus Torvalds 8e8afafb0b Yet another hw vulnerability with a software mitigation: Processor MMIO 
Stale Data.
 
 They are a class of MMIO-related weaknesses which can expose stale data
 by propagating it into core fill buffers. Data which can then be leaked
 using the usual speculative execution methods.
 
 Mitigations include this set along with microcode updates and are
 similar to MDS and TAA vulnerabilities: VERW now clears those buffers
 too.
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Merge tag 'x86-bugs-2022-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 MMIO stale data fixes from Thomas Gleixner:
 "Yet another hw vulnerability with a software mitigation: Processor
  MMIO Stale Data.

  They are a class of MMIO-related weaknesses which can expose stale
  data by propagating it into core fill buffers. Data which can then be
  leaked using the usual speculative execution methods.

  Mitigations include this set along with microcode updates and are
  similar to MDS and TAA vulnerabilities: VERW now clears those buffers
  too"

* tag 'x86-bugs-2022-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation/mmio: Print SMT warning
  KVM: x86/speculation: Disable Fill buffer clear within guests
  x86/speculation/mmio: Reuse SRBDS mitigation for SBDS
  x86/speculation/srbds: Update SRBDS mitigation selection
  x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data
  x86/speculation/mmio: Enable CPU Fill buffer clearing on idle
  x86/bugs: Group MDS, TAA & Processor MMIO Stale Data mitigations
  x86/speculation/mmio: Add mitigation for Processor MMIO Stale Data
  x86/speculation: Add a common function for MD_CLEAR mitigation update
  x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug
  Documentation: Add documentation for Processor MMIO Stale Data
2022-06-14 07:43:15 -07:00
..
alpha/include tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h 2019-03-28 14:31:56 -03:00
arc/include/uapi/asm tools arch uapi: Copy missing unistd.h headers for arc, hexagon and riscv 2019-05-02 16:00:20 -04:00
arm/include tools headers kvm: Sync kvm headers with the kernel sources 2019-12-02 12:54:13 -03:00
arm64/include perf tools arm64: Copy perf_regs.h from the kernel 2022-05-26 12:36:58 -03:00
csky/include/uapi/asm csky: Add support for libdw 2019-05-15 16:36:46 -03:00
hexagon/include/uapi/asm tools arch uapi: Copy missing unistd.h headers for arc, hexagon and riscv 2019-05-02 16:00:20 -04:00
ia64/include ia64: tools: remove duplicate definition of ia64_mf() on ia64 2021-04-16 16:10:37 -07:00
microblaze/include/uapi/asm License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
mips/include perf tools: Copy uapi/asm/perf_regs.h from the kernel for MIPS 2021-06-01 10:07:46 -03:00
parisc/include/uapi/asm parisc: Add MAP_UNINITIALIZED define 2020-10-15 08:10:39 +02:00
powerpc/include perf powerpc: Add support to expose instruction and data address registers as part of extended regs 2021-10-25 13:47:42 -03:00
riscv/include/uapi/asm Replace HTTP links with HTTPS ones: RISC-V 2020-07-30 11:37:40 -07:00
s390/include tools headers UAPI s390: Sync ptrace.h kernel headers 2021-03-06 16:54:23 -03:00
sh/include sh: remove sh5 support 2020-06-01 14:48:52 -04:00
sparc/include tools headers UAPI: Update tools's copy of mman.h headers 2019-07-29 09:02:58 -03:00
x86 Yet another hw vulnerability with a software mitigation: Processor MMIO 2022-06-14 07:43:15 -07:00
xtensa/include tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h 2019-03-28 14:31:56 -03:00