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KVM: ppc: Add emulation of E500 register mmucsr0

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Latest kernel flushes TLB via mmucsr0.

Signed-off-by: Liu Yu <yu.liu@freescale.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Liu Yu 2009-02-17 16:52:08 +08:00 committed by Avi Kivity
parent 71450f7885
commit b0a1835d53
3 changed files with 25 additions and 0 deletions
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8
arch/powerpc/kvm/e500_emulate.c
View File

@ -105,6 +105,11 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
case SPRN_HID1:
vcpu_e500->hid1 = vcpu->arch.gpr[rs]; break;
case SPRN_MMUCSR0:
emulated = kvmppc_e500_emul_mt_mmucsr0(vcpu_e500,
vcpu->arch.gpr[rs]);
break;
/* extra exceptions */
case SPRN_IVOR32:
vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = vcpu->arch.gpr[rs];
@ -172,6 +177,9 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
case SPRN_HID1:
vcpu->arch.gpr[rt] = vcpu_e500->hid1; break;
case SPRN_MMUCSR0:
vcpu->arch.gpr[rt] = 0; break;
/* extra exceptions */
case SPRN_IVOR32:
vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL];

16
arch/powerpc/kvm/e500_tlb.c
View File

@ -391,6 +391,22 @@ static int kvmppc_e500_gtlbe_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500,
return 0;
}
int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value)
{
int esel;
if (value & MMUCSR0_TLB0FI)
for (esel = 0; esel < vcpu_e500->guest_tlb_size[0]; esel++)
kvmppc_e500_gtlbe_invalidate(vcpu_e500, 0, esel);
if (value & MMUCSR0_TLB1FI)
for (esel = 0; esel < vcpu_e500->guest_tlb_size[1]; esel++)
kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel);
_tlbil_all();
return EMULATE_DONE;
}
int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);

1
arch/powerpc/kvm/e500_tlb.h
View File

@ -44,6 +44,7 @@
| E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK)
extern void kvmppc_dump_tlbs(struct kvm_vcpu *);
extern int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *, ulong);
extern int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *);
extern int kvmppc_e500_emul_tlbre(struct kvm_vcpu *);
extern int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *, int, int);