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| author | Mihai Caraman <mihai.caraman@freescale.com> | 2013-04-11 00:03:11 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-04-26 20:27:08 +0200 |
| commit | 9a6061d7fdedbf025549adf5c9d920d90bbf4a69 (patch) | |
| tree | 65057dad1b9ed9255175c19b8fe52cad37d91500 /arch/powerpc/kvm/e500_mmu.c | |
| parent | 307d9008ed4f28920e0e78719e10d0f407341e00 (diff) | |
| download | linux-9a6061d7fdedbf025549adf5c9d920d90bbf4a69.tar.bz2 | |
KVM: PPC: e500: Add support for EPTCFG register
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>
Diffstat (limited to 'arch/powerpc/kvm/e500_mmu.c')
| -rw-r--r-- | arch/powerpc/kvm/e500_mmu.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/e500_mmu.c b/arch/powerpc/kvm/e500_mmu.c index a863dc1791eb..1c1c5cb78495 100644 --- a/arch/powerpc/kvm/e500_mmu.c +++ b/arch/powerpc/kvm/e500_mmu.c @@ -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; |