diff options
| author | Paul Mackerras <paulus@samba.org> | 2013-09-21 09:53:28 +1000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-10-10 11:40:07 +0200 |
| commit | cfc860253abd73e1681696c08ea268d33285a2c4 (patch) | |
| tree | b0a307c8ef521952c2cc7157807a935424247e85 | |
| parent | d0d538b9d1239ed6ed318a2304ba5a763f835089 (diff) | |
| download | lwn-cfc860253abd73e1681696c08ea268d33285a2c4.tar.gz lwn-cfc860253abd73e1681696c08ea268d33285a2c4.zip | |
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: Paul Mackerras <paulus@samba.org>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rmhandlers.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 294b7af28cdd..c71103b8a748 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -1066,7 +1066,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) BEGIN_FTR_SECTION mfspr r8, SPRN_DSCR ld r7, HSTATE_DSCR(r13) - std r8, VCPU_DSCR(r7) + std r8, VCPU_DSCR(r9) mtspr SPRN_DSCR, r7 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) |