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xen.17121
xsa321-5.patch
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File xsa321-5.patch of Package xen.17121
From: <security@xenproject.org> Subject: 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. Acked-by: Jan Beulich <jbeulich@suse.com> --- a/xen/include/asm-x86/alternative.h +++ b/xen/include/asm-x86/alternative.h @@ -85,6 +85,11 @@ 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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