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openSUSE:Leap:15.1:Staging:B
xen
5ca46b68-x86emul-no-GPR-update-upon-AVX-gather-...
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File 5ca46b68-x86emul-no-GPR-update-upon-AVX-gather-failures.patch of Package xen
# Commit 74f299bbd7d5cc52325b5866c17b44dd0bd1c5a2 # Date 2019-04-03 10:14:32 +0200 # Author Jan Beulich <jbeulich@suse.com> # Committer Jan Beulich <jbeulich@suse.com> x86emul: suppress general register update upon AVX gather failures While destination and mask registers may indeed need updating in this case, the rIP update in particular needs to be avoided, as well as e.g. raising a single step trap. Reported-by: George Dunlap <george.dunlap@citrix.com> Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Andrew Cooper <andrew.cooper3@citrix.com> --- a/xen/arch/x86/x86_emulate/x86_emulate.c +++ b/xen/arch/x86/x86_emulate/x86_emulate.c @@ -8549,6 +8549,9 @@ x86_emulate( invoke_stub("", "", "+m" (mask) : "a" (&mask)); put_stub(stub); + if ( rc != X86EMUL_OKAY ) + goto done; + state->simd_size = simd_none; break; }
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