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| author | Josh Poimboeuf <jpoimboe@kernel.org> | 2024-04-11 07:40:50 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2024-04-12 12:05:54 +0200 |
| commit | 36d4fe147c870f6d3f6602befd7ef44393a1c87a (patch) | |
| tree | dc661efcbf9df6eb054f91302e3d59ff9299b33f /Documentation | |
| parent | x86/bugs: Clarify that syscall hardening isn't a BHI mitigation (diff) | |
| download | linux-36d4fe147c870f6d3f6602befd7ef44393a1c87a.tar.xz linux-36d4fe147c870f6d3f6602befd7ef44393a1c87a.zip | |
x86/bugs: Remove CONFIG_BHI_MITIGATION_AUTO and spectre_bhi=auto
Unlike most other mitigations' "auto" options, spectre_bhi=auto only
mitigates newer systems, which is confusing and not particularly useful.
Remove it.
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/412e9dc87971b622bbbaf64740ebc1f140bff343.1712813475.git.jpoimboe@kernel.org
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/hw-vuln/spectre.rst | 4 | ||||
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 |
2 files changed, 0 insertions, 7 deletions
diff --git a/Documentation/admin-guide/hw-vuln/spectre.rst b/Documentation/admin-guide/hw-vuln/spectre.rst index 5a39acf82483..25a04cda4c2c 100644 --- a/Documentation/admin-guide/hw-vuln/spectre.rst +++ b/Documentation/admin-guide/hw-vuln/spectre.rst @@ -669,10 +669,6 @@ kernel command line. needed. off Disable the mitigation. - auto - Enable the HW mitigation if needed, but - *don't* enable the SW mitigation except for KVM. - The system may be vulnerable. For spectre_v2_user see Documentation/admin-guide/kernel-parameters.txt diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index a3874cc97892..902ecd92a29f 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -6072,9 +6072,6 @@ on - (default) Enable the HW or SW mitigation as needed. off - Disable the mitigation. - auto - Enable the HW mitigation if needed, but - *don't* enable the SW mitigation except - for KVM. The system may be vulnerable. spectre_v2= [X86,EARLY] Control mitigation of Spectre variant 2 (indirect branch speculation) vulnerability. |