static unsigned num_msrs_to_save;
-static u32 emulated_msrs[] = {
+static const u32 emulated_msrs[] = {
MSR_IA32_TSCDEADLINE,
MSR_IA32_MISC_ENABLE,
MSR_IA32_MCG_STATUS,
static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
struct kvm_interrupt *irq)
{
- if (irq->irq < 0 || irq->irq >= 256)
+ if (irq->irq < 0 || irq->irq >= KVM_NR_INTERRUPTS)
return -EINVAL;
if (irqchip_in_kernel(vcpu->kvm))
return -ENXIO;
return true;
}
+static int complete_emulated_mmio(struct kvm_vcpu *vcpu);
+static int complete_emulated_pio(struct kvm_vcpu *vcpu);
+
int x86_emulate_instruction(struct kvm_vcpu *vcpu,
unsigned long cr2,
int emulation_type,
} else if (vcpu->arch.pio.count) {
if (!vcpu->arch.pio.in)
vcpu->arch.pio.count = 0;
- else
+ else {
writeback = false;
+ vcpu->arch.complete_userspace_io = complete_emulated_pio;
+ }
r = EMULATE_DO_MMIO;
} else if (vcpu->mmio_needed) {
if (!vcpu->mmio_is_write)
writeback = false;
r = EMULATE_DO_MMIO;
+ vcpu->arch.complete_userspace_io = complete_emulated_mmio;
} else if (r == EMULATION_RESTART)
goto restart;
else
return r;
}
+static inline int complete_emulated_io(struct kvm_vcpu *vcpu)
+{
+ int r;
+ vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
+ r = emulate_instruction(vcpu, EMULTYPE_NO_DECODE);
+ srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
+ if (r != EMULATE_DONE)
+ return 0;
+ return 1;
+}
+
+static int complete_emulated_pio(struct kvm_vcpu *vcpu)
+{
+ BUG_ON(!vcpu->arch.pio.count);
+
+ return complete_emulated_io(vcpu);
+}
+
/*
* Implements the following, as a state machine:
*
* copy data
* exit
*/
-static int complete_mmio(struct kvm_vcpu *vcpu)
+static int complete_emulated_mmio(struct kvm_vcpu *vcpu)
{
struct kvm_run *run = vcpu->run;
struct kvm_mmio_fragment *frag;
- int r;
- if (!(vcpu->arch.pio.count || vcpu->mmio_needed))
- return 1;
+ BUG_ON(!vcpu->mmio_needed);
- if (vcpu->mmio_needed) {
- /* Complete previous fragment */
- frag = &vcpu->mmio_fragments[vcpu->mmio_cur_fragment++];
- if (!vcpu->mmio_is_write)
- memcpy(frag->data, run->mmio.data, frag->len);
- if (vcpu->mmio_cur_fragment == vcpu->mmio_nr_fragments) {
- vcpu->mmio_needed = 0;
- if (vcpu->mmio_is_write)
- return 1;
- vcpu->mmio_read_completed = 1;
- goto done;
- }
- /* Initiate next fragment */
- ++frag;
- run->exit_reason = KVM_EXIT_MMIO;
- run->mmio.phys_addr = frag->gpa;
+ /* Complete previous fragment */
+ frag = &vcpu->mmio_fragments[vcpu->mmio_cur_fragment++];
+ if (!vcpu->mmio_is_write)
+ memcpy(frag->data, run->mmio.data, frag->len);
+ if (vcpu->mmio_cur_fragment == vcpu->mmio_nr_fragments) {
+ vcpu->mmio_needed = 0;
if (vcpu->mmio_is_write)
- memcpy(run->mmio.data, frag->data, frag->len);
- run->mmio.len = frag->len;
- run->mmio.is_write = vcpu->mmio_is_write;
- return 0;
-
- }
-done:
- vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
- r = emulate_instruction(vcpu, EMULTYPE_NO_DECODE);
- srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
- if (r != EMULATE_DONE)
- return 0;
- return 1;
+ return 1;
+ vcpu->mmio_read_completed = 1;
+ return complete_emulated_io(vcpu);
+ }
+ /* Initiate next fragment */
+ ++frag;
+ run->exit_reason = KVM_EXIT_MMIO;
+ run->mmio.phys_addr = frag->gpa;
+ if (vcpu->mmio_is_write)
+ memcpy(run->mmio.data, frag->data, frag->len);
+ run->mmio.len = frag->len;
+ run->mmio.is_write = vcpu->mmio_is_write;
+ vcpu->arch.complete_userspace_io = complete_emulated_mmio;
+ return 0;
}
+
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
int r;
}
}
- r = complete_mmio(vcpu);
- if (r <= 0)
- goto out;
+ if (unlikely(vcpu->arch.complete_userspace_io)) {
+ int (*cui)(struct kvm_vcpu *) = vcpu->arch.complete_userspace_io;
+ vcpu->arch.complete_userspace_io = NULL;
+ r = cui(vcpu);
+ if (r <= 0)
+ goto out;
+ } else
+ WARN_ON(vcpu->arch.pio.count || vcpu->mmio_needed);
r = __vcpu_run(vcpu);
if (mmu_reset_needed)
kvm_mmu_reset_context(vcpu);
- max_bits = (sizeof sregs->interrupt_bitmap) << 3;
+ max_bits = KVM_NR_INTERRUPTS;
pending_vec = find_first_bit(
(const unsigned long *)sregs->interrupt_bitmap, max_bits);
if (pending_vec < max_bits) {
int r;
vcpu->arch.mtrr_state.have_fixed = 1;
- vcpu_load(vcpu);
+ r = vcpu_load(vcpu);
+ if (r)
+ return r;
r = kvm_arch_vcpu_reset(vcpu);
if (r == 0)
r = kvm_mmu_setup(vcpu);
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
{
+ int r;
vcpu->arch.apf.msr_val = 0;
- vcpu_load(vcpu);
+ r = vcpu_load(vcpu);
+ BUG_ON(r);
kvm_mmu_unload(vcpu);
vcpu_put(vcpu);
static void kvm_unload_vcpu_mmu(struct kvm_vcpu *vcpu)
{
- vcpu_load(vcpu);
+ int r;
+ r = vcpu_load(vcpu);
+ BUG_ON(r);
kvm_mmu_unload(vcpu);
vcpu_put(vcpu);
}
kvm_mmu_change_mmu_pages(kvm, nr_mmu_pages);
kvm_mmu_slot_remove_write_access(kvm, mem->slot);
spin_unlock(&kvm->mmu_lock);
+ /*
+ * If memory slot is created, or moved, we need to clear all
+ * mmio sptes.
+ */
+ if (npages && old.base_gfn != mem->guest_phys_addr >> PAGE_SHIFT) {
+ kvm_mmu_zap_all(kvm);
+ kvm_reload_remote_mmus(kvm);
+ }
}
-void kvm_arch_flush_shadow(struct kvm *kvm)
+void kvm_arch_flush_shadow_all(struct kvm *kvm)
{
kvm_mmu_zap_all(kvm);
kvm_reload_remote_mmus(kvm);
}
+void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
+ struct kvm_memory_slot *slot)
+{
+ kvm_arch_flush_shadow_all(kvm);
+}
+
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
{
return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&
projects / ~andy / linux / blobdiff