diff options
Diffstat (limited to 'drivers/kvm/vmx.c')
| -rw-r--r-- | drivers/kvm/vmx.c | 129 |
1 files changed, 17 insertions, 112 deletions
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index 713f78a89595..fa4277d520ca 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -25,7 +25,6 @@ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/highmem.h> -#include <linux/profile.h> #include <linux/sched.h> #include <asm/io.h> @@ -355,8 +354,10 @@ static void load_transition_efer(struct vcpu_vmx *vmx) vmx->vcpu.stat.efer_reload++; } -static void vmx_save_host_state(struct vcpu_vmx *vmx) +static void vmx_save_host_state(struct kvm_vcpu *vcpu) { + struct vcpu_vmx *vmx = to_vmx(vcpu); + if (vmx->host_state.loaded) return; @@ -1598,6 +1599,13 @@ out: return ret; } +static void vmx_vcpu_reset(struct kvm_vcpu *vcpu) +{ + struct vcpu_vmx *vmx = to_vmx(vcpu); + + vmx_vcpu_setup(vmx); +} + static void inject_rmode_irq(struct kvm_vcpu *vcpu, int irq) { u16 ent[2]; @@ -2019,20 +2027,6 @@ static int handle_tpr_below_threshold(struct kvm_vcpu *vcpu, return 1; } -static void post_kvm_run_save(struct kvm_vcpu *vcpu, - struct kvm_run *kvm_run) -{ - kvm_run->if_flag = (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) != 0; - kvm_run->cr8 = get_cr8(vcpu); - kvm_run->apic_base = kvm_get_apic_base(vcpu); - if (irqchip_in_kernel(vcpu->kvm)) - kvm_run->ready_for_interrupt_injection = 1; - else - kvm_run->ready_for_interrupt_injection = - (vcpu->interrupt_window_open && - vcpu->irq_summary == 0); -} - static int handle_interrupt_window(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) { @@ -2123,21 +2117,6 @@ static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) return 0; } -/* - * Check if userspace requested an interrupt window, and that the - * interrupt window is open. - * - * No need to exit to userspace if we already have an interrupt queued. - */ -static int dm_request_for_irq_injection(struct kvm_vcpu *vcpu, - struct kvm_run *kvm_run) -{ - return (!vcpu->irq_summary && - kvm_run->request_interrupt_window && - vcpu->interrupt_window_open && - (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF)); -} - static void vmx_flush_tlb(struct kvm_vcpu *vcpu) { } @@ -2214,59 +2193,15 @@ static void vmx_intr_assist(struct kvm_vcpu *vcpu) enable_irq_window(vcpu); } -static int vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) +static void vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) { struct vcpu_vmx *vmx = to_vmx(vcpu); - int r; - - if (unlikely(vcpu->mp_state == VCPU_MP_STATE_SIPI_RECEIVED)) { - printk("vcpu %d received sipi with vector # %x\n", - vcpu->vcpu_id, vcpu->sipi_vector); - kvm_lapic_reset(vcpu); - vmx_vcpu_setup(vmx); - vcpu->mp_state = VCPU_MP_STATE_RUNNABLE; - } - -preempted: - if (vcpu->guest_debug.enabled) - kvm_guest_debug_pre(vcpu); - -again: - r = kvm_mmu_reload(vcpu); - if (unlikely(r)) - goto out; - - preempt_disable(); - - vmx_save_host_state(vmx); - kvm_load_guest_fpu(vcpu); /* * Loading guest fpu may have cleared host cr0.ts */ vmcs_writel(HOST_CR0, read_cr0()); - local_irq_disable(); - - if (signal_pending(current)) { - local_irq_enable(); - preempt_enable(); - r = -EINTR; - kvm_run->exit_reason = KVM_EXIT_INTR; - ++vcpu->stat.signal_exits; - goto out; - } - - if (irqchip_in_kernel(vcpu->kvm)) - vmx_intr_assist(vcpu); - else if (!vcpu->mmio_read_completed) - do_interrupt_requests(vcpu, kvm_run); - - vcpu->guest_mode = 1; - if (vcpu->requests) - if (test_and_clear_bit(KVM_TLB_FLUSH, &vcpu->requests)) - vmx_flush_tlb(vcpu); - asm ( /* Store host registers */ #ifdef CONFIG_X86_64 @@ -2383,46 +2318,10 @@ again: [cr2]"i"(offsetof(struct kvm_vcpu, cr2)) : "cc", "memory" ); - vcpu->guest_mode = 0; - local_irq_enable(); - - ++vcpu->stat.exits; - vcpu->interrupt_window_open = (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & 3) == 0; asm ("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS)); vmx->launched = 1; - - preempt_enable(); - - /* - * Profile KVM exit RIPs: - */ - if (unlikely(prof_on == KVM_PROFILING)) - profile_hit(KVM_PROFILING, (void *)vmcs_readl(GUEST_RIP)); - - r = kvm_handle_exit(kvm_run, vcpu); - if (r > 0) { - if (dm_request_for_irq_injection(vcpu, kvm_run)) { - r = -EINTR; - kvm_run->exit_reason = KVM_EXIT_INTR; - ++vcpu->stat.request_irq_exits; - goto out; - } - if (!need_resched()) { - ++vcpu->stat.light_exits; - goto again; - } - } - -out: - if (r > 0) { - kvm_resched(vcpu); - goto preempted; - } - - post_kvm_run_save(vcpu, kvm_run); - return r; } static void vmx_inject_page_fault(struct kvm_vcpu *vcpu, @@ -2560,12 +2459,15 @@ static struct kvm_x86_ops vmx_x86_ops = { .vcpu_create = vmx_create_vcpu, .vcpu_free = vmx_free_vcpu, + .vcpu_reset = vmx_vcpu_reset, + .prepare_guest_switch = vmx_save_host_state, .vcpu_load = vmx_vcpu_load, .vcpu_put = vmx_vcpu_put, .vcpu_decache = vmx_vcpu_decache, .set_guest_debug = set_guest_debug, + .guest_debug_pre = kvm_guest_debug_pre, .get_msr = vmx_get_msr, .set_msr = vmx_set_msr, .get_segment_base = vmx_get_segment_base, @@ -2594,10 +2496,13 @@ static struct kvm_x86_ops vmx_x86_ops = { .inject_gp = vmx_inject_gp, .run = vmx_vcpu_run, + .handle_exit = kvm_handle_exit, .skip_emulated_instruction = skip_emulated_instruction, .patch_hypercall = vmx_patch_hypercall, .get_irq = vmx_get_irq, .set_irq = vmx_inject_irq, + .inject_pending_irq = vmx_intr_assist, + .inject_pending_vectors = do_interrupt_requests, }; static int __init vmx_init(void) |