diff options
Diffstat (limited to 'system/xen/xsa/xsa328-post-xsa321-4.13-5.patch')
| -rw-r--r-- | system/xen/xsa/xsa328-post-xsa321-4.13-5.patch | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/system/xen/xsa/xsa328-post-xsa321-4.13-5.patch b/system/xen/xsa/xsa328-post-xsa321-4.13-5.patch new file mode 100644 index 0000000000000..60cfe6ccdf0d0 --- /dev/null +++ b/system/xen/xsa/xsa328-post-xsa321-4.13-5.patch @@ -0,0 +1,24 @@ +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 +@@ -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. + * |