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kvm/ppc/booke: Hold srcu lock when calling gfn functions

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KVM core expects arch code to acquire the srcu lock when calling
gfn_to_memslot and similar functions.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
This commit is contained in:
Scott Wood
2013-06-06 19:16:31 -05:00
committed by Gleb Natapov
parent 2b6398fcf2
commit f1e89028f0
3 changed files with 17 additions and 0 deletions
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7
arch/powerpc/kvm/booke.c
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@@ -832,6 +832,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
{
int r = RESUME_HOST;
int s;
int idx;
/* update before a new last_exit_type is rewritten */
kvmppc_update_timing_stats(vcpu);
@@ -1053,6 +1054,8 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
break;
}
idx = srcu_read_lock(&vcpu->kvm->srcu);
gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
gfn = gpaddr >> PAGE_SHIFT;
@@ -1075,6 +1078,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
kvmppc_account_exit(vcpu, MMIO_EXITS);
}
srcu_read_unlock(&vcpu->kvm->srcu, idx);
break;
}
@@ -1098,6 +1102,8 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
idx = srcu_read_lock(&vcpu->kvm->srcu);
gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
gfn = gpaddr >> PAGE_SHIFT;
@@ -1114,6 +1120,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
}
srcu_read_unlock(&vcpu->kvm->srcu, idx);
break;
}