5c0f7d38a6
reverse-24757-use-grant-references.patch - fate#313222 - xenstore-chmod should support 256 permissions 26189-xenstore-chmod.patch - bnc#789945 - VUL-0: CVE-2012-5510: xen: Grant table version switch list corruption vulnerability (XSA-26) CVE-2012-5510-xsa26.patch - bnc#789944 - VUL-0: CVE-2012-5511: xen: Several HVM operations do not validate the range of their inputs (XSA-27) CVE-2012-5511-xsa27.patch - bnc#789951 - VUL-0: CVE-2012-5513: xen: XENMEM_exchange may overwrite hypervisor memory (XSA-29) CVE-2012-5513-xsa29.patch - bnc#789948 - VUL-0: CVE-2012-5514: xen: Missing unlock in guest_physmap_mark_populate_on_demand() (XSA-30) CVE-2012-5514-xsa30.patch - bnc#789950 - VUL-0: CVE-2012-5515: xen: Several memory hypercall operations allow invalid extent order values (XSA-31) CVE-2012-5515-xsa31.patch - bnc#789952 - VUL-0: CVE-2012-5525: xen: Several hypercalls do not validate input GFNs (XSA-32) CVE-2012-5525-xsa32.patch - Upstream patches from Jan 26129-ACPI-BGRT-invalidate.patch 26132-tmem-save-NULL-check.patch 26134-x86-shadow-invlpg-check.patch 26139-cpumap-masking.patch 26148-vcpu-timer-overflow.patch (Replaces CVE-2012-4535-xsa20.patch) OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=219
35 lines
1.3 KiB
Diff
35 lines
1.3 KiB
Diff
# HG changeset patch
|
|
# User Jan Beulich <jbeulich@suse.com>
|
|
# Date 1353946839 -3600
|
|
# Node ID 16bf7f3069a77c8a15b785cfdb5f2f634661d7fc
|
|
# Parent 0049de3827bcfe3488dc6c7b7a60327a562aee5c
|
|
x86/time: fix scale_delta() inline assembly
|
|
|
|
The way it was coded, it clobbered %rdx without telling the compiler.
|
|
This generally didn't cause any problems except when there are two back
|
|
to back invocations (as in plt_overflow()), as in that case the
|
|
compiler may validly assume that it can re-use for the second instance
|
|
the value loaded into %rdx before the first one.
|
|
|
|
Once at it, also properly relax the second operand of "mul" (there's no
|
|
need for it to be in %rdx, or a register at all), and switch away from
|
|
using explicit register names in the instruction operands.
|
|
|
|
Signed-off-by: Jan Beulich <jbeulich@suse.com>
|
|
Acked-by: Keir Fraser <keir@xen.org>
|
|
|
|
--- a/xen/arch/x86/time.c
|
|
+++ b/xen/arch/x86/time.c
|
|
@@ -142,8 +142,9 @@ static inline u64 scale_delta(u64 delta,
|
|
: "a" ((u32)delta), "1" ((u32)(delta >> 32)), "2" (scale->mul_frac) );
|
|
#else
|
|
asm (
|
|
- "mul %%rdx ; shrd $32,%%rdx,%%rax"
|
|
- : "=a" (product) : "0" (delta), "d" ((u64)scale->mul_frac) );
|
|
+ "mul %2 ; shrd $32,%1,%0"
|
|
+ : "=a" (product), "=d" (delta)
|
|
+ : "rm" (delta), "0" ((u64)scale->mul_frac) );
|
|
#endif
|
|
|
|
return product;
|