Commit e5ee5422 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Alexander Graf
Browse files

KVM: PPC: BOOK3S: PR: Enable Little Endian PR guest 



This patch make sure we inherit the LE bit correctly in different case
so that we can run Little Endian distro in PR mode

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent 8f20a3ab

arch/powerpc/include/asm/kvm_host.h

+1 −1
Original line number Diff line number Diff line
@@ -562,6 +562,7 @@ struct kvm_vcpu_arch { 
#ifdef CONFIG_PPC_BOOK3S

	ulong fault_dar;

	u32 fault_dsisr;

	unsigned long intr_msr;

#endif



#ifdef CONFIG_BOOKE
@@ -654,7 +655,6 @@ struct kvm_vcpu_arch { 
	spinlock_t tbacct_lock;

	u64 busy_stolen;

	u64 busy_preempt;

	unsigned long intr_msr;

#endif

};

arch/powerpc/kernel/asm-offsets.c

+1 −1
Original line number Diff line number Diff line
@@ -493,7 +493,6 @@ int main(void) 
	DEFINE(VCPU_DAR, offsetof(struct kvm_vcpu, arch.shregs.dar));

	DEFINE(VCPU_VPA, offsetof(struct kvm_vcpu, arch.vpa.pinned_addr));

	DEFINE(VCPU_VPA_DIRTY, offsetof(struct kvm_vcpu, arch.vpa.dirty));

	DEFINE(VCPU_INTR_MSR, offsetof(struct kvm_vcpu, arch.intr_msr));

#endif

#ifdef CONFIG_PPC_BOOK3S

	DEFINE(VCPU_VCPUID, offsetof(struct kvm_vcpu, vcpu_id));
@@ -528,6 +527,7 @@ int main(void) 
	DEFINE(VCPU_SLB_NR, offsetof(struct kvm_vcpu, arch.slb_nr));

	DEFINE(VCPU_FAULT_DSISR, offsetof(struct kvm_vcpu, arch.fault_dsisr));

	DEFINE(VCPU_FAULT_DAR, offsetof(struct kvm_vcpu, arch.fault_dar));

	DEFINE(VCPU_INTR_MSR, offsetof(struct kvm_vcpu, arch.intr_msr));

	DEFINE(VCPU_LAST_INST, offsetof(struct kvm_vcpu, arch.last_inst));

	DEFINE(VCPU_TRAP, offsetof(struct kvm_vcpu, arch.trap));

	DEFINE(VCPU_CFAR, offsetof(struct kvm_vcpu, arch.cfar));

arch/powerpc/kvm/book3s_64_mmu.c

+1 −1
Original line number Diff line number Diff line
@@ -38,7 +38,7 @@ 


static void kvmppc_mmu_book3s_64_reset_msr(struct kvm_vcpu *vcpu)

{

	kvmppc_set_msr(vcpu, MSR_SF);

	kvmppc_set_msr(vcpu, vcpu->arch.intr_msr);

}



static struct kvmppc_slb *kvmppc_mmu_book3s_64_find_slbe(

arch/powerpc/kvm/book3s_pr.c

+22 −1
Original line number Diff line number Diff line
@@ -249,7 +249,7 @@ static void kvmppc_recalc_shadow_msr(struct kvm_vcpu *vcpu) 
	ulong smsr = vcpu->arch.shared->msr;



	/* Guest MSR values */

	smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE;

	smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE | MSR_LE;

	/* Process MSR values */

	smsr |= MSR_ME | MSR_RI | MSR_IR | MSR_DR | MSR_PR | MSR_EE;

	/* External providers the guest reserved */
@@ -1110,6 +1110,15 @@ static int kvmppc_get_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, 
	case KVM_REG_PPC_HIOR:

		*val = get_reg_val(id, to_book3s(vcpu)->hior);

		break;

	case KVM_REG_PPC_LPCR:

		/*

		 * We are only interested in the LPCR_ILE bit

		 */

		if (vcpu->arch.intr_msr & MSR_LE)

			*val = get_reg_val(id, LPCR_ILE);

		else

			*val = get_reg_val(id, 0);

		break;

	default:

		r = -EINVAL;

		break;
@@ -1118,6 +1127,14 @@ static int kvmppc_get_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, 
	return r;

}



static void kvmppc_set_lpcr_pr(struct kvm_vcpu *vcpu, u64 new_lpcr)

{

	if (new_lpcr & LPCR_ILE)

		vcpu->arch.intr_msr |= MSR_LE;

	else

		vcpu->arch.intr_msr &= ~MSR_LE;

}



static int kvmppc_set_one_reg_pr(struct kvm_vcpu *vcpu, u64 id,

				 union kvmppc_one_reg *val)

{
@@ -1128,6 +1145,9 @@ static int kvmppc_set_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, 
		to_book3s(vcpu)->hior = set_reg_val(id, *val);

		to_book3s(vcpu)->hior_explicit = true;

		break;

	case KVM_REG_PPC_LPCR:

		kvmppc_set_lpcr_pr(vcpu, set_reg_val(id, *val));

		break;

	default:

		r = -EINVAL;

		break;
@@ -1180,6 +1200,7 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_pr(struct kvm *kvm, 
	vcpu->arch.pvr = 0x3C0301;

	if (mmu_has_feature(MMU_FTR_1T_SEGMENT))

		vcpu->arch.pvr = mfspr(SPRN_PVR);

	vcpu->arch.intr_msr = MSR_SF;

#else

	/* default to book3s_32 (750) */

	vcpu->arch.pvr = 0x84202;