From: Alexander Graf Date: Tue, 22 Apr 2014 10:41:06 +0000 (+0200) Subject: KVM: PPC: Book3S PR: Ignore PMU SPRs X-Git-Tag: v3.12.65~8 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3bf7e13f8efaddeb67174fe66537a2eab35544a2;p=thirdparty%2Fkernel%2Fstable.git KVM: PPC: Book3S PR: Ignore PMU SPRs commit f8f6eb0d189cf2724af5ebc8cad460c78fb1994e upstream. When we expose a POWER8 CPU into the guest, it will start accessing PMU SPRs that we don't emulate. Just ignore accesses to them. Signed-off-by: Alexander Graf Signed-off-by: Jiri Slaby --- diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c index 360ce68c98099..57913b199919d 100644 --- a/arch/powerpc/kvm/book3s_emulate.c +++ b/arch/powerpc/kvm/book3s_emulate.c @@ -459,6 +459,13 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val) case SPRN_WPAR_GEKKO: case SPRN_MSSSR0: case SPRN_DABR: +#ifdef CONFIG_PPC_BOOK3S_64 + case SPRN_MMCRS: + case SPRN_MMCRA: + case SPRN_MMCR0: + case SPRN_MMCR1: + case SPRN_MMCR2: +#endif break; unprivileged: default: @@ -557,6 +564,13 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val) case SPRN_WPAR_GEKKO: case SPRN_MSSSR0: case SPRN_DABR: +#ifdef CONFIG_PPC_BOOK3S_64 + case SPRN_MMCRS: + case SPRN_MMCRA: + case SPRN_MMCR0: + case SPRN_MMCR1: + case SPRN_MMCR2: +#endif *spr_val = 0; break; default: