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KVM: PPC: 440: Implement mtdcrx

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We need mtdcrx to execute properly on 460 cores.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2012-08-16 00:28:09 +02:00
parent 2e2327023f
commit e4dcfe88fb
1 changed files with 23 additions and 13 deletions
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36
arch/powerpc/kvm/44x_emulate.c
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@ -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: