x86/bugs: Remove CONFIG_BHI_MITIGATION_AUTO and spectre_bhi=auto

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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

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Josh Poimboeuf 2024-04-10 22:40:50 -07:00 • committed by Ingo Molnar

parent 5f882f3b0a

commit 36d4fe147c

4 changed files with 1 additions and 21 deletions

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4

Documentation/admin-guide/hw-vuln/spectre.rst

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3

Documentation/admin-guide/kernel-parameters.txt

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5

arch/x86/Kconfig

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10

arch/x86/kernel/cpu/bugs.c

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