From: Roger Pau Monné Date: Tue, 7 Jul 2020 12:39:25 +0000 (+0200) Subject: x86/alternative: introduce alternative_2 X-Git-Tag: archive/raspbian/4.14.0+80-gd101b417b7-1+rpi1^2~63^2~16 X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=23570bce00ee6ba2139ece978ab6f03ff166e21d;p=xen.git x86/alternative: introduce alternative_2 It's based on alternative_io_2 without inputs or outputs but with an added memory clobber. This is part of XSA-321. Signed-off-by: Roger Pau Monné Acked-by: Jan Beulich --- diff --git a/xen/include/asm-x86/alternative.h b/xen/include/asm-x86/alternative.h index 92e3581bc2..8e78cc91c3 100644 --- a/xen/include/asm-x86/alternative.h +++ b/xen/include/asm-x86/alternative.h @@ -114,6 +114,11 @@ extern void alternative_branches(void); #define alternative(oldinstr, newinstr, feature) \ asm volatile (ALTERNATIVE(oldinstr, newinstr, feature) : : : "memory") +#define alternative_2(oldinstr, newinstr1, feature1, newinstr2, feature2) \ + asm volatile (ALTERNATIVE_2(oldinstr, newinstr1, feature1, \ + newinstr2, feature2) \ + : : : "memory") + /* * Alternative inline assembly with input. *