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KVM: PPC: e500: Add support for EPTCFG register

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EPTCFG register defined by E.PT is accessed unconditionally by Linux guests
in the presence of MAV 2.0. Emulate it now.

Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Mihai Caraman
2013-04-11 00:03:11 +00:00
committed by Alexander Graf
parent 307d9008ed
commit 9a6061d7fd
5 changed files with 24 additions and 0 deletions
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12
arch/powerpc/kvm/e500_mmu.c
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@@ -624,6 +624,9 @@ int kvmppc_get_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id,
case KVM_REG_PPC_MMUCFG:
*val = get_reg_val(id, vcpu->arch.mmucfg);
break;
case KVM_REG_PPC_EPTCFG:
*val = get_reg_val(id, vcpu->arch.eptcfg);
break;
case KVM_REG_PPC_TLB0CFG:
case KVM_REG_PPC_TLB1CFG:
case KVM_REG_PPC_TLB2CFG:
@@ -678,6 +681,12 @@ int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id,
r = -EINVAL;
break;
}
case KVM_REG_PPC_EPTCFG: {
u32 reg = set_reg_val(id, *val);
if (reg != vcpu->arch.eptcfg)
r = -EINVAL;
break;
}
case KVM_REG_PPC_TLB0CFG:
case KVM_REG_PPC_TLB1CFG:
case KVM_REG_PPC_TLB2CFG:
@@ -875,6 +884,9 @@ static int vcpu_mmu_init(struct kvm_vcpu *vcpu,
if (has_feature(vcpu, VCPU_FTR_MMU_V2)) {
vcpu->arch.tlbps[0] = mfspr(SPRN_TLB0PS);
vcpu->arch.tlbps[1] = mfspr(SPRN_TLB1PS);
/* Guest mmu emulation currently doesn't handle E.PT */
vcpu->arch.eptcfg = 0;
}
return 0;