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| author | Mihai Caraman <mihai.caraman@freescale.com> | 2012-10-11 06:13:27 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2012-12-06 01:34:19 +0100 |
| commit | 38f988240c611f9d2595feb1b8ddcb80b0e97dec (patch) | |
| tree | 76890955b85d7d2e5de119353225d55a4858af56 /arch/powerpc/kvm | |
| parent | 95e90b43c9c648bde607101e5a158941eec8e514 (diff) | |
| download | linux-38f988240c611f9d2595feb1b8ddcb80b0e97dec.tar.gz linux-38f988240c611f9d2595feb1b8ddcb80b0e97dec.tar.bz2 linux-38f988240c611f9d2595feb1b8ddcb80b0e97dec.zip | |
KVM: PPC: bookehv: Add EPCR support in mtspr/mfspr emulation
Add EPCR support in booke mtspr/mfspr emulation. EPCR register is defined only
for 64-bit and HV categories, we will expose it at this point only to 64-bit
virtual processors running on 64-bit HV hosts.
Define a reusable setter function for vcpu's EPCR.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[agraf: move HV dependency in the code]
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 12 | ||||
| -rw-r--r-- | arch/powerpc/kvm/booke.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kvm/booke_emulate.c | 14 |
3 files changed, 26 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 9457fb1b41c9..037d045db3f1 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -1473,6 +1473,18 @@ void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot) { } +void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr) +{ +#if defined(CONFIG_64BIT) + vcpu->arch.epcr = new_epcr; +#ifdef CONFIG_KVM_BOOKE_HV + vcpu->arch.shadow_epcr &= ~SPRN_EPCR_GICM; + if (vcpu->arch.epcr & SPRN_EPCR_ICM) + vcpu->arch.shadow_epcr |= SPRN_EPCR_GICM; +#endif +#endif +} + void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr) { vcpu->arch.tcr = new_tcr; diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h index ba61974c1e20..e9b88e433f64 100644 --- a/arch/powerpc/kvm/booke.h +++ b/arch/powerpc/kvm/booke.h @@ -69,6 +69,7 @@ extern unsigned long kvmppc_booke_handlers; void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr); void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr); +void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr); void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr); void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits); void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits); diff --git a/arch/powerpc/kvm/booke_emulate.c b/arch/powerpc/kvm/booke_emulate.c index 514790f41aba..4685b8cf2249 100644 --- a/arch/powerpc/kvm/booke_emulate.c +++ b/arch/powerpc/kvm/booke_emulate.c @@ -240,7 +240,14 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val) case SPRN_MCSR: vcpu->arch.mcsr &= ~spr_val; break; - +#if defined(CONFIG_64BIT) + case SPRN_EPCR: + kvmppc_set_epcr(vcpu, spr_val); +#ifdef CONFIG_KVM_BOOKE_HV + mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr); +#endif + break; +#endif default: emulated = EMULATE_FAIL; } @@ -335,6 +342,11 @@ int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val) case SPRN_MCSR: *spr_val = vcpu->arch.mcsr; break; +#if defined(CONFIG_64BIT) + case SPRN_EPCR: + *spr_val = vcpu->arch.epcr; + break; +#endif default: emulated = EMULATE_FAIL; |