We need mtdcrx to execute properly on 460 cores.
Signed-off-by: Alexander Graf <agraf@xxxxxxx>
---
v1 -> v2:
- rework mtdcr into a function
---
arch/powerpc/kvm/44x_emulate.c | 36 +++++++++++++++++++++++-------------
1 files changed, 23 insertions(+), 13 deletions(-)
diff --git a/arch/powerpc/kvm/44x_emulate.c b/arch/powerpc/kvm/44x_emulate.c
index c8c6157..3843a75 100644
--- a/arch/powerpc/kvm/44x_emulate.c
+++ b/arch/powerpc/kvm/44x_emulate.c
@@ -28,11 +28,29 @@
#include "44x_tlb.h"
#define XOP_MFDCR 323
+#define XOP_MTDCRX 387
#define XOP_MTDCR 451
#define XOP_TLBSX 914
#define XOP_ICCCI 966
#define XOP_TLBWE 978
+static int emulate_mtdcr(struct kvm_vcpu *vcpu, int rs, int dcrn)
+{
+ /* emulate some access in kernel */
+ switch (dcrn) {
+ case DCRN_CPR0_CONFIG_ADDR:
+ vcpu->arch.cpr0_cfgaddr = kvmppc_get_gpr(vcpu, rs);
+ return EMULATE_DONE;
+ default:
+ vcpu->run->dcr.dcrn = dcrn;
+ vcpu->run->dcr.data = kvmppc_get_gpr(vcpu, rs);
+ vcpu->run->dcr.is_write = 1;
+ vcpu->arch.dcr_needed = 1;
+ kvmppc_account_exit(vcpu, DCR_EXITS);
+ return EMULATE_DO_DCR;
+ }
+}
+
int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
@@ -85,20 +103,12 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
break;
case XOP_MTDCR:
- /* emulate some access in kernel */
- switch (dcrn) {
- case DCRN_CPR0_CONFIG_ADDR:
- vcpu->arch.cpr0_cfgaddr = kvmppc_get_gpr(vcpu, rs);
- break;
- default:
- run->dcr.dcrn = dcrn;
- run->dcr.data = kvmppc_get_gpr(vcpu, rs);
- run->dcr.is_write = 1;
- vcpu->arch.dcr_needed = 1;
- kvmppc_account_exit(vcpu, DCR_EXITS);
- emulated = EMULATE_DO_DCR;
- }
+ emulated = emulate_mtdcr(vcpu, rs, dcrn);
+ break;
+ case XOP_MTDCRX:
+ emulated = emulate_mtdcr(vcpu, rs,
+ kvmppc_get_gpr(vcpu, ra));
break;
case XOP_TLBWE:
--
1.6.0.2
--
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