diff options
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 2288ad829b32..46a368cb651e 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -155,11 +155,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { u64 __read_mostly host_xcr0; -static inline u32 bit(int bitno) -{ - return 1 << (bitno & 31); -} - static void kvm_on_user_return(struct user_return_notifier *urn) { unsigned slot; @@ -981,7 +976,7 @@ static inline u64 nsec_to_cycles(u64 nsec) if (kvm_tsc_changes_freq()) printk_once(KERN_WARNING "kvm: unreliable cycle conversion on adjustable rate TSC\n"); - ret = nsec * __get_cpu_var(cpu_tsc_khz); + ret = nsec * __this_cpu_read(cpu_tsc_khz); do_div(ret, USEC_PER_SEC); return ret; } @@ -1066,7 +1061,7 @@ static int kvm_guest_time_update(struct kvm_vcpu *v) local_irq_save(flags); kvm_get_msr(v, MSR_IA32_TSC, &tsc_timestamp); kernel_ns = get_kernel_ns(); - this_tsc_khz = __get_cpu_var(cpu_tsc_khz); + this_tsc_khz = __this_cpu_read(cpu_tsc_khz); if (unlikely(this_tsc_khz == 0)) { local_irq_restore(flags); @@ -2560,6 +2555,7 @@ static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu *vcpu, !kvm_exception_is_soft(vcpu->arch.exception.nr); events->exception.nr = vcpu->arch.exception.nr; events->exception.has_error_code = vcpu->arch.exception.has_error_code; + events->exception.pad = 0; events->exception.error_code = vcpu->arch.exception.error_code; events->interrupt.injected = @@ -2573,12 +2569,14 @@ static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu *vcpu, events->nmi.injected = vcpu->arch.nmi_injected; events->nmi.pending = vcpu->arch.nmi_pending; events->nmi.masked = kvm_x86_ops->get_nmi_mask(vcpu); + events->nmi.pad = 0; events->sipi_vector = vcpu->arch.sipi_vector; events->flags = (KVM_VCPUEVENT_VALID_NMI_PENDING | KVM_VCPUEVENT_VALID_SIPI_VECTOR | KVM_VCPUEVENT_VALID_SHADOW); + memset(&events->reserved, 0, sizeof(events->reserved)); } static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu, @@ -2623,6 +2621,7 @@ static void kvm_vcpu_ioctl_x86_get_debugregs(struct kvm_vcpu *vcpu, dbgregs->dr6 = vcpu->arch.dr6; dbgregs->dr7 = vcpu->arch.dr7; dbgregs->flags = 0; + memset(&dbgregs->reserved, 0, sizeof(dbgregs->reserved)); } static int kvm_vcpu_ioctl_x86_set_debugregs(struct kvm_vcpu *vcpu, @@ -3106,6 +3105,7 @@ static int kvm_vm_ioctl_get_pit2(struct kvm *kvm, struct kvm_pit_state2 *ps) sizeof(ps->channels)); ps->flags = kvm->arch.vpit->pit_state.flags; mutex_unlock(&kvm->arch.vpit->pit_state.lock); + memset(&ps->reserved, 0, sizeof(ps->reserved)); return r; } @@ -3169,10 +3169,6 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_memslots *slots, *old_slots; unsigned long *dirty_bitmap; - spin_lock(&kvm->mmu_lock); - kvm_mmu_slot_remove_write_access(kvm, log->slot); - spin_unlock(&kvm->mmu_lock); - r = -ENOMEM; dirty_bitmap = vmalloc(n); if (!dirty_bitmap) @@ -3194,6 +3190,10 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, dirty_bitmap = old_slots->memslots[log->slot].dirty_bitmap; kfree(old_slots); + spin_lock(&kvm->mmu_lock); + kvm_mmu_slot_remove_write_access(kvm, log->slot); + spin_unlock(&kvm->mmu_lock); + r = -EFAULT; if (copy_to_user(log->dirty_bitmap, dirty_bitmap, n)) { vfree(dirty_bitmap); @@ -3486,6 +3486,7 @@ long kvm_arch_vm_ioctl(struct file *filp, user_ns.clock = kvm->arch.kvmclock_offset + now_ns; local_irq_enable(); user_ns.flags = 0; + memset(&user_ns.pad, 0, sizeof(user_ns.pad)); r = -EFAULT; if (copy_to_user(argp, &user_ns, sizeof(user_ns))) @@ -3972,8 +3973,10 @@ int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu) return X86EMUL_CONTINUE; if (kvm_x86_ops->has_wbinvd_exit()) { + preempt_disable(); smp_call_function_many(vcpu->arch.wbinvd_dirty_mask, wbinvd_ipi, NULL, 1); + preempt_enable(); cpumask_clear(vcpu->arch.wbinvd_dirty_mask); } wbinvd(); @@ -4424,7 +4427,7 @@ EXPORT_SYMBOL_GPL(kvm_fast_pio_out); static void tsc_bad(void *info) { - __get_cpu_var(cpu_tsc_khz) = 0; + __this_cpu_write(cpu_tsc_khz, 0); } static void tsc_khz_changed(void *data) @@ -4438,7 +4441,7 @@ static void tsc_khz_changed(void *data) khz = cpufreq_quick_get(raw_smp_processor_id()); if (!khz) khz = tsc_khz; - __get_cpu_var(cpu_tsc_khz) = khz; + __this_cpu_write(cpu_tsc_khz, khz); } static int kvmclock_cpufreq_notifier(struct notifier_block *nb, unsigned long val, @@ -4561,9 +4564,11 @@ static void kvm_timer_init(void) #ifdef CONFIG_CPU_FREQ struct cpufreq_policy policy; memset(&policy, 0, sizeof(policy)); - cpufreq_get_policy(&policy, get_cpu()); + cpu = get_cpu(); + cpufreq_get_policy(&policy, cpu); if (policy.cpuinfo.max_freq) max_tsc_khz = policy.cpuinfo.max_freq; + put_cpu(); #endif cpufreq_register_notifier(&kvmclock_cpufreq_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); @@ -5514,6 +5519,8 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, mmu_reset_needed |= kvm_read_cr4(vcpu) != sregs->cr4; kvm_x86_ops->set_cr4(vcpu, sregs->cr4); + if (sregs->cr4 & X86_CR4_OSXSAVE) + update_cpuid(vcpu); if (!is_long_mode(vcpu) && is_pae(vcpu)) { load_pdptrs(vcpu, vcpu->arch.walk_mmu, vcpu->arch.cr3); mmu_reset_needed = 1; |