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| author | Scott Wood <scottwood@freescale.com> | 2013-06-07 04:16:31 +0400 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-06-11 12:10:59 +0400 |
| commit | f1e89028f020ca982bf51be6eaba0d462ba0f7fa (patch) | |
| tree | b6d06ea63e61d1f93037f1f9ff76fe19358dfd52 /arch/powerpc/kvm/booke.c | |
| parent | 2b6398fcf2831f52a8ad9f01c123b3ce2ea31277 (diff) | |
| download | linux-f1e89028f020ca982bf51be6eaba0d462ba0f7fa.tar.xz | |
kvm/ppc/booke: Hold srcu lock when calling gfn functions
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>
Diffstat (limited to 'arch/powerpc/kvm/booke.c')
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 1020119226db..ecbe9081c9c2 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -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; } |