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KVM: PPC: Critical interrupt emulation support 

rfci instruction and CSRR0/1 registers are emulated.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Bharat Bhushan 2012-06-27 19:37:31 +00:00 committed by Alexander Graf
parent 66c9897d9d
commit 0c1fc3c3c4
1 changed files with 25 additions and 0 deletions
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25
arch/powerpc/kvm/booke_emulate.c
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@ -24,6 +24,7 @@
#include "booke.h"
#define OP_19_XOP_RFI 50
#define OP_19_XOP_RFCI 51
#define OP_31_XOP_MFMSR 83
#define OP_31_XOP_WRTEE 131
@ -36,6 +37,12 @@ static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
kvmppc_set_msr(vcpu, vcpu->arch.shared->srr1);
}
static void kvmppc_emul_rfci(struct kvm_vcpu *vcpu)
{
vcpu->arch.pc = vcpu->arch.csrr0;
kvmppc_set_msr(vcpu, vcpu->arch.csrr1);
}
int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
@ -52,6 +59,12 @@ int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
*advance = 0;
break;
case OP_19_XOP_RFCI:
kvmppc_emul_rfci(vcpu);
kvmppc_set_exit_type(vcpu, EMULATED_RFCI_EXITS);
*advance = 0;
break;
default:
emulated = EMULATE_FAIL;
break;
@ -113,6 +126,12 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
case SPRN_ESR:
vcpu->arch.shared->esr = spr_val;
break;
case SPRN_CSRR0:
vcpu->arch.csrr0 = spr_val;
break;
case SPRN_CSRR1:
vcpu->arch.csrr1 = spr_val;
break;
case SPRN_DBCR0:
vcpu->arch.dbcr0 = spr_val;
break;
@ -232,6 +251,12 @@ int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
case SPRN_ESR:
*spr_val = vcpu->arch.shared->esr;
break;
case SPRN_CSRR0:
*spr_val = vcpu->arch.csrr0;
break;
case SPRN_CSRR1:
*spr_val = vcpu->arch.csrr1;
break;
case SPRN_DBCR0:
*spr_val = vcpu->arch.dbcr0;
break;