x86/ibt: Disable IBT around firmware

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Assume firmware isn't IBT clean and disable it across calls.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154318.759989383@infradead.org

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Peter Zijlstra 2022-03-08 16:30:38 +01:00

parent 99c95c5d4f

commit fe379fa4d1

4 changed files with 48 additions and 2 deletions

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9

arch/x86/include/asm/efi.h

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6

arch/x86/include/asm/ibt.h

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7

arch/x86/kernel/apm_32.c

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28

arch/x86/kernel/cpu/common.c

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