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Commit 38f98824 authored by Mihai Caraman's avatar Mihai Caraman Committed by Alexander Graf
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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: default avatarMihai Caraman <mihai.caraman@freescale.com>
[agraf: move HV dependency in the code]
Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent 95e90b43
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+12 −0
Original line number Diff line number Diff line
@@ -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;
+1 −0
Original line number Diff line number Diff line
@@ -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);
+13 −1
Original line number Diff line number Diff line
@@ -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;