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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_emulate.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_emulate.c')
| -rw-r--r-- | arch/powerpc/kvm/e500_emulate.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c index 12b8de2f91ed..b10a01243abd 100644 --- a/arch/powerpc/kvm/e500_emulate.c +++ b/arch/powerpc/kvm/e500_emulate.c @@ -317,6 +317,15 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val) case SPRN_MMUCFG: *spr_val = vcpu->arch.mmucfg; break; + case SPRN_EPTCFG: + if (!has_feature(vcpu, VCPU_FTR_MMU_V2)) + return EMULATE_FAIL; + /* + * Legacy Linux guests access EPTCFG register even if the E.PT + * category is disabled in the VM. Give them a chance to live. + */ + *spr_val = vcpu->arch.eptcfg; + break; /* extra exceptions */ case SPRN_IVOR32: |