Re: [PATCH] KVM: emulate: do not adjust size of fastop and setcc subroutines

From: Borislav Petkov
Date: Fri Jul 15 2022 - 12:31:54 EST


On Fri, Jul 15, 2022 at 07:49:27AM -0400, Paolo Bonzini wrote:
> Instead of doing complicated calculations to find the size of the subroutines
> (which are even more complicated because they need to be stringified into
> an asm statement), just hardcode to 16.
>
> It is less dense for a few combinations of IBT/SLS/retbleed, but it has
> the advantage of being really simple.
>
> Suggested-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> ---
> arch/x86/kvm/emulate.c | 17 +++++++----------
> 1 file changed, 7 insertions(+), 10 deletions(-)

Acked-by: Borislav Petkov <bp@xxxxxxx>

--
Regards/Gruss,
Boris.

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