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| author | Paul Mackerras <paulus@samba.org> | 2013-09-21 09:53:28 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-22 09:02:25 +0100 |
| commit | 2eec4f8e8f10e97104649c0a8fa0fbf6f3f51792 (patch) | |
| tree | 4b6f82363fc7d75e1a90ab44d3c870da74f68963 | |
| parent | 85005d18bddd858908230089476d64fc8ecb47aa (diff) | |
| download | linux-stable-2eec4f8e8f10e97104649c0a8fa0fbf6f3f51792.tar.gz linux-stable-2eec4f8e8f10e97104649c0a8fa0fbf6f3f51792.tar.bz2 linux-stable-2eec4f8e8f10e97104649c0a8fa0fbf6f3f51792.zip | |
KVM: PPC: Book3S HV: Fix typo in saving DSCR
commit cfc860253abd73e1681696c08ea268d33285a2c4 upstream.
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.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 24b23a4307be..126f38d03d32 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -935,7 +935,7 @@ 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) |