Commit d3286144 authored by Alexander Graf's avatar Alexander Graf

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: default avatarBen Collins <>
Signed-off-by: default avatarAlexander Graf <>
Tested-by: default avatarBen Collins <>
parent dfdebc24
......@@ -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);
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
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment