On 21.09.2013, at 01:53, Paul Mackerras wrote: > 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@xxxxxxxxxxxxxxx [v3.1+] > Signed-off-by: Paul Mackerras <paulus@xxxxxxxxx> Acked-by: Alexander Graf <agraf@xxxxxxx> Gleb, Paolo, can you please queue this directly? Alex > --- > Please send this upstream to Linus for inclusion in 3.12. > > arch/powerpc/kvm/book3s_hv_rmhandlers.S | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S > index 8e0f28f..852e694 100644 > --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S > +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S > @@ -1190,7 +1190,7 @@ 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) > > -- > 1.8.4.rc3 > -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
