diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kvm/book3s_xive_native.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_xive_native.c b/arch/powerpc/kvm/book3s_xive_native.c index fec3b85411ef..8b762e3ebbc5 100644 --- a/arch/powerpc/kvm/book3s_xive_native.c +++ b/arch/powerpc/kvm/book3s_xive_native.c @@ -535,6 +535,7 @@ static int kvmppc_xive_native_set_queue_config(struct kvmppc_xive *xive, struct xive_q *q; gfn_t gfn; unsigned long page_size; + int srcu_idx; /* * Demangle priority/server tuple from the EQ identifier @@ -610,20 +611,24 @@ static int kvmppc_xive_native_set_queue_config(struct kvmppc_xive *xive, return -EINVAL; } + srcu_idx = srcu_read_lock(&kvm->srcu); gfn = gpa_to_gfn(kvm_eq.qaddr); page = gfn_to_page(kvm, gfn); if (is_error_page(page)) { + srcu_read_unlock(&kvm->srcu, srcu_idx); pr_err("Couldn't get queue page %llx!\n", kvm_eq.qaddr); return -EINVAL; } page_size = kvm_host_page_size(kvm, gfn); if (1ull << kvm_eq.qshift > page_size) { + srcu_read_unlock(&kvm->srcu, srcu_idx); pr_warn("Incompatible host page size %lx!\n", page_size); return -EINVAL; } qaddr = page_to_virt(page) + (kvm_eq.qaddr & ~PAGE_MASK); + srcu_read_unlock(&kvm->srcu, srcu_idx); /* * Backup the queue page guest address to the mark EQ page @@ -854,6 +859,7 @@ static int kvmppc_xive_native_vcpu_eq_sync(struct kvm_vcpu *vcpu) { struct kvmppc_xive_vcpu *xc = vcpu->arch.xive_vcpu; unsigned int prio; + int srcu_idx; if (!xc) return -ENOENT; @@ -865,7 +871,9 @@ static int kvmppc_xive_native_vcpu_eq_sync(struct kvm_vcpu *vcpu) continue; /* Mark EQ page dirty for migration */ + srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); mark_page_dirty(vcpu->kvm, gpa_to_gfn(q->guest_qaddr)); + srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); } return 0; } |