From: Borislav Petkov <bp@suse.de>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
x86@kernel.org, peterz@infradead.org,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH] KVM: emulate: do not adjust size of fastop and setcc subroutines
Date: Fri, 15 Jul 2022 18:31:43 +0200 [thread overview]
Message-ID: <YtGWb3vTITBS9Wj2@zn.tnic> (raw)
In-Reply-To: <20220715114927.1460356-1-pbonzini@redhat.com>
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@linux-foundation.org>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> arch/x86/kvm/emulate.c | 17 +++++++----------
> 1 file changed, 7 insertions(+), 10 deletions(-)
Acked-by: Borislav Petkov <bp@suse.de>
--
Regards/Gruss,
Boris.
SUSE Software Solutions Germany GmbH
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Martje Boudien Moerman
(HRB 36809, AG Nürnberg)
next prev parent reply other threads:[~2022-07-15 16:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-15 11:49 [PATCH] KVM: emulate: do not adjust size of fastop and setcc subroutines Paolo Bonzini
2022-07-15 16:31 ` Borislav Petkov [this message]
2022-07-15 18:09 ` Thadeu Lima de Souza Cascardo
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