Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...

[linux-drm-fsl-dcu.git] / arch / powerpc / kvm / book3s_hv.c

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 072287f1c3bc7347b6ff4f959843c97053fa4aa1..b51d5db780684ea5dcb3b6dae5c5bc70224dca43 100644 (file)
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -131,8 +131,9 @@ static void kvmppc_fast_vcpu_kick_hv(struct kvm_vcpu *vcpu)
 static void kvmppc_core_vcpu_load_hv(struct kvm_vcpu *vcpu, int cpu)
 {
        struct kvmppc_vcore *vc = vcpu->arch.vcore;
+       unsigned long flags;
 
-       spin_lock(&vcpu->arch.tbacct_lock);
+       spin_lock_irqsave(&vcpu->arch.tbacct_lock, flags);
        if (vc->runner == vcpu && vc->vcore_state != VCORE_INACTIVE &&
            vc->preempt_tb != TB_NIL) {
                vc->stolen_tb += mftb() - vc->preempt_tb;
@@ -143,19 +144,20 @@ static void kvmppc_core_vcpu_load_hv(struct kvm_vcpu *vcpu, int cpu)
                vcpu->arch.busy_stolen += mftb() - vcpu->arch.busy_preempt;
                vcpu->arch.busy_preempt = TB_NIL;
        }
-       spin_unlock(&vcpu->arch.tbacct_lock);
+       spin_unlock_irqrestore(&vcpu->arch.tbacct_lock, flags);
 }
 
 static void kvmppc_core_vcpu_put_hv(struct kvm_vcpu *vcpu)
 {
        struct kvmppc_vcore *vc = vcpu->arch.vcore;
+       unsigned long flags;
 
-       spin_lock(&vcpu->arch.tbacct_lock);
+       spin_lock_irqsave(&vcpu->arch.tbacct_lock, flags);
        if (vc->runner == vcpu && vc->vcore_state != VCORE_INACTIVE)
                vc->preempt_tb = mftb();
        if (vcpu->arch.state == KVMPPC_VCPU_BUSY_IN_HOST)
                vcpu->arch.busy_preempt = mftb();
-       spin_unlock(&vcpu->arch.tbacct_lock);
+       spin_unlock_irqrestore(&vcpu->arch.tbacct_lock, flags);
 }
 
 static void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr)
@@ -486,11 +488,11 @@ static u64 vcore_stolen_time(struct kvmppc_vcore *vc, u64 now)
         */
        if (vc->vcore_state != VCORE_INACTIVE &&
            vc->runner->arch.run_task != current) {
-               spin_lock(&vc->runner->arch.tbacct_lock);
+               spin_lock_irq(&vc->runner->arch.tbacct_lock);
                p = vc->stolen_tb;
                if (vc->preempt_tb != TB_NIL)
                        p += now - vc->preempt_tb;
-               spin_unlock(&vc->runner->arch.tbacct_lock);
+               spin_unlock_irq(&vc->runner->arch.tbacct_lock);
        } else {
                p = vc->stolen_tb;
        }
@@ -512,10 +514,10 @@ static void kvmppc_create_dtl_entry(struct kvm_vcpu *vcpu,
        core_stolen = vcore_stolen_time(vc, now);
        stolen = core_stolen - vcpu->arch.stolen_logged;
        vcpu->arch.stolen_logged = core_stolen;
-       spin_lock(&vcpu->arch.tbacct_lock);
+       spin_lock_irq(&vcpu->arch.tbacct_lock);
        stolen += vcpu->arch.busy_stolen;
        vcpu->arch.busy_stolen = 0;
-       spin_unlock(&vcpu->arch.tbacct_lock);
+       spin_unlock_irq(&vcpu->arch.tbacct_lock);
        if (!dt || !vpa)
                return;
        memset(dt, 0, sizeof(struct dtl_entry));
@@ -589,7 +591,9 @@ int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
                if (list_empty(&vcpu->kvm->arch.rtas_tokens))
                        return RESUME_HOST;
 
+               idx = srcu_read_lock(&vcpu->kvm->srcu);
                rc = kvmppc_rtas_hcall(vcpu);
+               srcu_read_unlock(&vcpu->kvm->srcu, idx);
 
                if (rc == -ENOENT)
                        return RESUME_HOST;
@@ -1115,13 +1119,13 @@ static void kvmppc_remove_runnable(struct kvmppc_vcore *vc,
 
        if (vcpu->arch.state != KVMPPC_VCPU_RUNNABLE)
                return;
-       spin_lock(&vcpu->arch.tbacct_lock);
+       spin_lock_irq(&vcpu->arch.tbacct_lock);
        now = mftb();
        vcpu->arch.busy_stolen += vcore_stolen_time(vc, now) -
                vcpu->arch.stolen_logged;
        vcpu->arch.busy_preempt = now;
        vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST;
-       spin_unlock(&vcpu->arch.tbacct_lock);
+       spin_unlock_irq(&vcpu->arch.tbacct_lock);
        --vc->n_runnable;
        list_del(&vcpu->arch.run_list);
 }