Merge branch 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm

* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PPC: Keep index within boundaries in kvmppc_44x_emul_tlbwe()
  KVM: VMX: blocked-by-sti must not defer NMI injections
  KVM: x86: Call vcpu_load and vcpu_put in cpuid_update
  KVM: SVM: Fix wrong intercept masks on 32 bit
  KVM: convert ioapic lock to spinlock

diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c
index 2570fcc..8123125 100644 (file)
--- a/arch/powerpc/kvm/44x_tlb.c
+++ b/arch/powerpc/kvm/44x_tlb.c
@@ -440,7 +440,7 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
        unsigned int gtlb_index;
 
        gtlb_index = kvmppc_get_gpr(vcpu, ra);
-       if (gtlb_index > KVM44x_GUEST_TLB_SIZE) {
+       if (gtlb_index >= KVM44x_GUEST_TLB_SIZE) {
                printk("%s: index %d\n", __func__, gtlb_index);
                kvmppc_dump_vcpu(vcpu);
                return EMULATE_FAIL;

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 2ba5820..737361f 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2067,7 +2067,7 @@ static int cpuid_interception(struct vcpu_svm *svm)
 static int iret_interception(struct vcpu_svm *svm)
 {
        ++svm->vcpu.stat.nmi_window_exits;
-       svm->vmcb->control.intercept &= ~(1UL << INTERCEPT_IRET);
+       svm->vmcb->control.intercept &= ~(1ULL << INTERCEPT_IRET);
        svm->vcpu.arch.hflags |= HF_IRET_MASK;
        return 1;
 }
@@ -2479,7 +2479,7 @@ static void svm_inject_nmi(struct kvm_vcpu *vcpu)
 
        svm->vmcb->control.event_inj = SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_NMI;
        vcpu->arch.hflags |= HF_NMI_MASK;
-       svm->vmcb->control.intercept |= (1UL << INTERCEPT_IRET);
+       svm->vmcb->control.intercept |= (1ULL << INTERCEPT_IRET);
        ++vcpu->stat.nmi_injections;
 }
 
@@ -2539,10 +2539,10 @@ static void svm_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked)
 
        if (masked) {
                svm->vcpu.arch.hflags |= HF_NMI_MASK;
-               svm->vmcb->control.intercept |= (1UL << INTERCEPT_IRET);
+               svm->vmcb->control.intercept |= (1ULL << INTERCEPT_IRET);
        } else {
                svm->vcpu.arch.hflags &= ~HF_NMI_MASK;
-               svm->vmcb->control.intercept &= ~(1UL << INTERCEPT_IRET);
+               svm->vmcb->control.intercept &= ~(1ULL << INTERCEPT_IRET);
        }
 }
 

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index bc933cf..2f8db0e 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2703,8 +2703,7 @@ static int vmx_nmi_allowed(struct kvm_vcpu *vcpu)
                return 0;
 
        return  !(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
-                       (GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS |
-                               GUEST_INTR_STATE_NMI));
+                       (GUEST_INTR_STATE_MOV_SS | GUEST_INTR_STATE_NMI));
 }
 
 static bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 3c4ca98..c4f35b5 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1712,6 +1712,7 @@ static int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
        if (copy_from_user(cpuid_entries, entries,
                           cpuid->nent * sizeof(struct kvm_cpuid_entry)))
                goto out_free;
+       vcpu_load(vcpu);
        for (i = 0; i < cpuid->nent; i++) {
                vcpu->arch.cpuid_entries[i].function = cpuid_entries[i].function;
                vcpu->arch.cpuid_entries[i].eax = cpuid_entries[i].eax;
@@ -1729,6 +1730,7 @@ static int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
        r = 0;
        kvm_apic_set_version(vcpu);
        kvm_x86_ops->cpuid_update(vcpu);
+       vcpu_put(vcpu);
 
 out_free:
        vfree(cpuid_entries);
@@ -1749,9 +1751,11 @@ static int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
        if (copy_from_user(&vcpu->arch.cpuid_entries, entries,
                           cpuid->nent * sizeof(struct kvm_cpuid_entry2)))
                goto out;
+       vcpu_load(vcpu);
        vcpu->arch.cpuid_nent = cpuid->nent;
        kvm_apic_set_version(vcpu);
        kvm_x86_ops->cpuid_update(vcpu);
+       vcpu_put(vcpu);
        return 0;
 
 out:

diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 03a5eb2..7c79c1d 100644 (file)
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -197,7 +197,7 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
        union kvm_ioapic_redirect_entry entry;
        int ret = 1;
 
-       mutex_lock(&ioapic->lock);
+       spin_lock(&ioapic->lock);
        if (irq >= 0 && irq < IOAPIC_NUM_PINS) {
                entry = ioapic->redirtbl[irq];
                level ^= entry.fields.polarity;
@@ -214,7 +214,7 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
                }
                trace_kvm_ioapic_set_irq(entry.bits, irq, ret == 0);
        }
-       mutex_unlock(&ioapic->lock);
+       spin_unlock(&ioapic->lock);
 
        return ret;
 }
@@ -238,9 +238,9 @@ static void __kvm_ioapic_update_eoi(struct kvm_ioapic *ioapic, int vector,
                 * is dropped it will be put into irr and will be delivered
                 * after ack notifier returns.
                 */
-               mutex_unlock(&ioapic->lock);
+               spin_unlock(&ioapic->lock);
                kvm_notify_acked_irq(ioapic->kvm, KVM_IRQCHIP_IOAPIC, i);
-               mutex_lock(&ioapic->lock);
+               spin_lock(&ioapic->lock);
 
                if (trigger_mode != IOAPIC_LEVEL_TRIG)
                        continue;
@@ -259,9 +259,9 @@ void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode)
        smp_rmb();
        if (!test_bit(vector, ioapic->handled_vectors))
                return;
-       mutex_lock(&ioapic->lock);
+       spin_lock(&ioapic->lock);
        __kvm_ioapic_update_eoi(ioapic, vector, trigger_mode);
-       mutex_unlock(&ioapic->lock);
+       spin_unlock(&ioapic->lock);
 }
 
 static inline struct kvm_ioapic *to_ioapic(struct kvm_io_device *dev)
@@ -287,7 +287,7 @@ static int ioapic_mmio_read(struct kvm_io_device *this, gpa_t addr, int len,
        ASSERT(!(addr & 0xf));  /* check alignment */
 
        addr &= 0xff;
-       mutex_lock(&ioapic->lock);
+       spin_lock(&ioapic->lock);
        switch (addr) {
        case IOAPIC_REG_SELECT:
                result = ioapic->ioregsel;
@@ -301,7 +301,7 @@ static int ioapic_mmio_read(struct kvm_io_device *this, gpa_t addr, int len,
                result = 0;
                break;
        }
-       mutex_unlock(&ioapic->lock);
+       spin_unlock(&ioapic->lock);
 
        switch (len) {
        case 8:
@@ -338,7 +338,7 @@ static int ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len,
        }
 
        addr &= 0xff;
-       mutex_lock(&ioapic->lock);
+       spin_lock(&ioapic->lock);
        switch (addr) {
        case IOAPIC_REG_SELECT:
                ioapic->ioregsel = data;
@@ -356,7 +356,7 @@ static int ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len,
        default:
                break;
        }
-       mutex_unlock(&ioapic->lock);
+       spin_unlock(&ioapic->lock);
        return 0;
 }
 
@@ -386,7 +386,7 @@ int kvm_ioapic_init(struct kvm *kvm)
        ioapic = kzalloc(sizeof(struct kvm_ioapic), GFP_KERNEL);
        if (!ioapic)
                return -ENOMEM;
-       mutex_init(&ioapic->lock);
+       spin_lock_init(&ioapic->lock);
        kvm->arch.vioapic = ioapic;
        kvm_ioapic_reset(ioapic);
        kvm_iodevice_init(&ioapic->dev, &ioapic_mmio_ops);
@@ -419,9 +419,9 @@ int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
        if (!ioapic)
                return -EINVAL;
 
-       mutex_lock(&ioapic->lock);
+       spin_lock(&ioapic->lock);
        memcpy(state, ioapic, sizeof(struct kvm_ioapic_state));
-       mutex_unlock(&ioapic->lock);
+       spin_unlock(&ioapic->lock);
        return 0;
 }
 
@@ -431,9 +431,9 @@ int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
        if (!ioapic)
                return -EINVAL;
 
-       mutex_lock(&ioapic->lock);
+       spin_lock(&ioapic->lock);
        memcpy(ioapic, state, sizeof(struct kvm_ioapic_state));
        update_handled_vectors(ioapic);
-       mutex_unlock(&ioapic->lock);
+       spin_unlock(&ioapic->lock);
        return 0;
 }

diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
index 8a751b7..0b190c3 100644 (file)
--- a/virt/kvm/ioapic.h
+++ b/virt/kvm/ioapic.h
@@ -45,7 +45,7 @@ struct kvm_ioapic {
        struct kvm_io_device dev;
        struct kvm *kvm;
        void (*ack_notifier)(void *opaque, int irq);
-       struct mutex lock;
+       spinlock_t lock;
        DECLARE_BITMAP(handled_vectors, 256);
 };