x86/bugs: Add a separate config for Spectre V2

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Currently, the CONFIG_SPECULATION_MITIGATIONS is halfway populated,
where some mitigations have entries in Kconfig, and they could be
modified, while others mitigations do not have Kconfig entries, and
could not be controlled at build time.

Create an entry for the Spectre V2 CPU mitigation under
CONFIG_SPECULATION_MITIGATIONS. This allow users to enable or disable
it at compilation time.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lore.kernel.org/r/20240729164105.554296-9-leitao@debian.org

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This commit is contained in:

Breno Leitao 2024-07-29 09:40:56 -07:00 • committed by Borislav Petkov (AMD)

parent a0b02e3fe3

commit 72c70f480a

2 changed files with 17 additions and 4 deletions

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12

arch/x86/Kconfig

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9

arch/x86/kernel/cpu/bugs.c

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