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openSUSE:Step:15-SP4
xen.16819
5f046cfd-x86-introduce-alternative_2.patch
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File 5f046cfd-x86-introduce-alternative_2.patch of Package xen.16819
# Commit 23570bce00ee6ba2139ece978ab6f03ff166e21d # Date 2020-07-07 14:39:25 +0200 # Author Roger Pau Monné <roger.pau@citrix.com> # Committer Jan Beulich <jbeulich@suse.com> 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 <roger.pau@citrix.com> Acked-by: Jan Beulich <jbeulich@suse.com> --- a/xen/include/asm-x86/alternative.h +++ b/xen/include/asm-x86/alternative.h @@ -113,6 +113,11 @@ extern void alternative_instructions(voi #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. *
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