Commit cfc86025 authored by Paul Mackerras's avatar Paul Mackerras Committed by Paolo Bonzini

KVM: PPC: Book3S HV: Fix typo in saving DSCR

This fixes a typo in the code that saves the guest DSCR (Data Stream
Control Register) into the kvm_vcpu_arch struct on guest exit.  The
effect of the typo was that the DSCR value was saved in the wrong place,
so changes to the DSCR by the guest didn't persist across guest exit
and entry, and some host kernel memory got corrupted.

Cc: stable@vger.kernel.org [v3.1+]
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
Acked-by: default avatarAlexander Graf <agraf@suse.de>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent d0d538b9
...@@ -1066,7 +1066,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) ...@@ -1066,7 +1066,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206)
BEGIN_FTR_SECTION BEGIN_FTR_SECTION
mfspr r8, SPRN_DSCR mfspr r8, SPRN_DSCR
ld r7, HSTATE_DSCR(r13) ld r7, HSTATE_DSCR(r13)
std r8, VCPU_DSCR(r7) std r8, VCPU_DSCR(r9)
mtspr SPRN_DSCR, r7 mtspr SPRN_DSCR, r7
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206)
......
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