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by cherry-picking the relevant commits from launchpad/lunar [0]. (relevant commits are based on k.o/stable commits for this) minimally tested by booting my (ryzen) machine with this kernel and skimming through dmesg after boot. [0] git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/lunar Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
39 lines
1.9 KiB
Diff
39 lines
1.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Dave Hansen <dave.hansen@linux.intel.com>
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Date: Tue, 1 Aug 2023 07:31:07 -0700
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Subject: [PATCH] Documentation/x86: Fix backwards on/off logic about YMM
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support
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These options clearly turn *off* XSAVE YMM support. Correct the
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typo.
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Reported-by: Ben Hutchings <ben@decadent.org.uk>
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Fixes: 553a5c03e90a ("x86/speculation: Add force option to GDS mitigation")
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Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
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(cherry picked from commit 1b0fc0345f2852ffe54fb9ae0e12e2ee69ad6a20)
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CVE-2022-40982
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Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
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Acked-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
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Acked-by: Stefan Bader <stefan.bader@canonical.com>
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Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
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(cherry picked from commit f88fa53e3623291b52b8a6656c1ea9a5d6f6f284)
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Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
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---
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Documentation/admin-guide/hw-vuln/gather_data_sampling.rst | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/Documentation/admin-guide/hw-vuln/gather_data_sampling.rst b/Documentation/admin-guide/hw-vuln/gather_data_sampling.rst
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index 40b7a6260010..264bfa937f7d 100644
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--- a/Documentation/admin-guide/hw-vuln/gather_data_sampling.rst
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+++ b/Documentation/admin-guide/hw-vuln/gather_data_sampling.rst
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@@ -63,7 +63,7 @@ GDS can also be mitigated on systems that don't have updated microcode by
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disabling AVX. This can be done by setting gather_data_sampling="force" or
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"clearcpuid=avx" on the kernel command-line.
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-If used, these options will disable AVX use by turning on XSAVE YMM support.
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+If used, these options will disable AVX use by turning off XSAVE YMM support.
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However, the processor will still enumerate AVX support. Userspace that
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does not follow proper AVX enumeration to check both AVX *and* XSAVE YMM
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support will break.
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