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. -----BEGIN PGP SIGNATURE----- iQJGBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmKXMkMTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoWGPD/idalLIhhV5F2+hZIKm0WSnsBxAOh9K 7y8xBxpQQ5FUfW3vm7Pg3ro6VJp7w2CzKoD4lGXzGHriusn3qst3vkza9Ay8xu8g RDwKe6hI+p+Il9BV9op3f8FiRLP9bcPMMReW/mRyYsOnJe59hVNwRAL8OG40PY4k hZgg4Psfvfx8bwiye5efjMSe4fXV7BUCkr601+8kVJoiaoszkux9mqP+cnnB5P3H zW1d1jx7d6eV1Y063h7WgiNqQRYv0bROZP5BJkufIoOHUXDpd65IRF3bDnCIvSEz KkMYJNXb3qh7EQeHS53NL+gz2EBQt+Tq1VH256qn6i3mcHs85HvC68gVrAkfVHJE QLJE3MoXWOqw+mhwzCRrEXN9O1lT/PqDWw8I4M/5KtGG/KnJs+bygmfKBbKjIVg4 2yQWfMmOgQsw3GWCRjgEli7aYbDJQjany0K/qZTq54I41gu+TV8YMccaWcXgDKrm cXFGUfOg4gBm4IRjJ/RJn+mUv6u+/3sLVqsaFTs9aiib1dpBSSUuMGBh548Ft7g2 5VbFVSDaLjB2BdlcG7enlsmtzw0ltNssmqg7jTK/L7XNVnvxwUoXw+zP7RmCLEYt UV4FHXraMKNt2ZketlomC8ui2hg73ylUp4pPdMXCp7PIXp9sVamRTbpz12h689VJ /s55bWxHkR6S =LBxT -----END PGP SIGNATURE----- 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