From: Alexander Graf Date: Thu, 17 Jan 2013 12:50:25 +0000 (+0100) Subject: KVM: PPC: Emulate dcbf X-Git-Tag: v3.8-rc5~3^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d3286144c92ec876da9e30320afa875699b7e0f1;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git KVM: PPC: Emulate dcbf Guests can trigger MMIO exits using dcbf. Since we don't emulate cache incoherent MMIO, just do nothing and move on. Reported-by: Ben Collins Signed-off-by: Alexander Graf Tested-by: Ben Collins CC: stable@vger.kernel.org --- diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c index b0855e5..9d9cddc 100644 --- a/arch/powerpc/kvm/emulate.c +++ b/arch/powerpc/kvm/emulate.c @@ -39,6 +39,7 @@ #define OP_31_XOP_TRAP 4 #define OP_31_XOP_LWZX 23 #define OP_31_XOP_TRAP_64 68 +#define OP_31_XOP_DCBF 86 #define OP_31_XOP_LBZX 87 #define OP_31_XOP_STWX 151 #define OP_31_XOP_STBX 215 @@ -374,6 +375,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) emulated = kvmppc_emulate_mtspr(vcpu, sprn, rs); break; + case OP_31_XOP_DCBF: case OP_31_XOP_DCBI: /* Do nothing. The guest is performing dcbi because * hardware DMA is not snooped by the dcache, but