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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2023-08-01 07:31:07 -0700 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2023-08-01 15:28:24 -0700 |
| commit | 1b0fc0345f2852ffe54fb9ae0e12e2ee69ad6a20 (patch) | |
| tree | 660ccfc956bd68837e99f14c84b8be2d323e5c7c /Documentation | |
| parent | 81ac7e5d741742d650b4ed6186c4826c1a0631a7 (diff) | |
| download | lwn-1b0fc0345f2852ffe54fb9ae0e12e2ee69ad6a20.tar.gz lwn-1b0fc0345f2852ffe54fb9ae0e12e2ee69ad6a20.zip | |
Documentation/x86: Fix backwards on/off logic about YMM support
These options clearly turn *off* XSAVE YMM support. Correct the
typo.
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Fixes: 553a5c03e90a ("x86/speculation: Add force option to GDS mitigation")
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/hw-vuln/gather_data_sampling.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/admin-guide/hw-vuln/gather_data_sampling.rst b/Documentation/admin-guide/hw-vuln/gather_data_sampling.rst index 40b7a6260010..264bfa937f7d 100644 --- a/Documentation/admin-guide/hw-vuln/gather_data_sampling.rst +++ b/Documentation/admin-guide/hw-vuln/gather_data_sampling.rst @@ -63,7 +63,7 @@ GDS can also be mitigated on systems that don't have updated microcode by disabling AVX. This can be done by setting gather_data_sampling="force" or "clearcpuid=avx" on the kernel command-line. -If used, these options will disable AVX use by turning on XSAVE YMM support. +If used, these options will disable AVX use by turning off XSAVE YMM support. However, the processor will still enumerate AVX support. Userspace that does not follow proper AVX enumeration to check both AVX *and* XSAVE YMM support will break. |