mirror of
https://github.com/Fishwaldo/Star64_linux.git
synced 2025-05-04 14:23:46 +00:00
KVM: Move main vcpu loop into subarch independent code
This simplifies adding new code as well as reducing overall code size. Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
parent
29bd8a7808
commit
04d2cc7780
4 changed files with 187 additions and 217 deletions
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@ -453,13 +453,16 @@ struct kvm_x86_ops {
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/* Create, but do not attach this VCPU */
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/* Create, but do not attach this VCPU */
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struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
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struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
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void (*vcpu_free)(struct kvm_vcpu *vcpu);
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void (*vcpu_free)(struct kvm_vcpu *vcpu);
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void (*vcpu_reset)(struct kvm_vcpu *vcpu);
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void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
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void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
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void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
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void (*vcpu_put)(struct kvm_vcpu *vcpu);
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void (*vcpu_put)(struct kvm_vcpu *vcpu);
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void (*vcpu_decache)(struct kvm_vcpu *vcpu);
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void (*vcpu_decache)(struct kvm_vcpu *vcpu);
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int (*set_guest_debug)(struct kvm_vcpu *vcpu,
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int (*set_guest_debug)(struct kvm_vcpu *vcpu,
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struct kvm_debug_guest *dbg);
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struct kvm_debug_guest *dbg);
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void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
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int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
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int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
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int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
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int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
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u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
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u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
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@ -491,12 +494,16 @@ struct kvm_x86_ops {
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void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
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void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
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int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
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void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
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int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
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void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
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void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
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void (*patch_hypercall)(struct kvm_vcpu *vcpu,
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void (*patch_hypercall)(struct kvm_vcpu *vcpu,
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unsigned char *hypercall_addr);
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unsigned char *hypercall_addr);
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int (*get_irq)(struct kvm_vcpu *vcpu);
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int (*get_irq)(struct kvm_vcpu *vcpu);
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void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
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void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
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void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
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void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
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struct kvm_run *run);
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};
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};
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extern struct kvm_x86_ops *kvm_x86_ops;
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extern struct kvm_x86_ops *kvm_x86_ops;
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@ -38,6 +38,7 @@
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#include <linux/cpumask.h>
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#include <linux/cpumask.h>
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#include <linux/smp.h>
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#include <linux/smp.h>
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#include <linux/anon_inodes.h>
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#include <linux/anon_inodes.h>
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#include <linux/profile.h>
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#include <asm/processor.h>
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#include <asm/processor.h>
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#include <asm/msr.h>
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#include <asm/msr.h>
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@ -1970,6 +1971,127 @@ int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
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}
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}
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EXPORT_SYMBOL_GPL(kvm_emulate_pio_string);
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EXPORT_SYMBOL_GPL(kvm_emulate_pio_string);
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/*
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* Check if userspace requested an interrupt window, and that the
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* interrupt window is open.
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*
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* No need to exit to userspace if we already have an interrupt queued.
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*/
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static int dm_request_for_irq_injection(struct kvm_vcpu *vcpu,
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struct kvm_run *kvm_run)
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{
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return (!vcpu->irq_summary &&
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kvm_run->request_interrupt_window &&
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vcpu->interrupt_window_open &&
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(kvm_x86_ops->get_rflags(vcpu) & X86_EFLAGS_IF));
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}
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static void post_kvm_run_save(struct kvm_vcpu *vcpu,
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struct kvm_run *kvm_run)
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{
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kvm_run->if_flag = (kvm_x86_ops->get_rflags(vcpu) & X86_EFLAGS_IF) != 0;
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kvm_run->cr8 = get_cr8(vcpu);
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kvm_run->apic_base = kvm_get_apic_base(vcpu);
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if (irqchip_in_kernel(vcpu->kvm))
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kvm_run->ready_for_interrupt_injection = 1;
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else
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kvm_run->ready_for_interrupt_injection =
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(vcpu->interrupt_window_open &&
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vcpu->irq_summary == 0);
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}
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static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
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{
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int r;
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if (unlikely(vcpu->mp_state == VCPU_MP_STATE_SIPI_RECEIVED)) {
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printk("vcpu %d received sipi with vector # %x\n",
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vcpu->vcpu_id, vcpu->sipi_vector);
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kvm_lapic_reset(vcpu);
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kvm_x86_ops->vcpu_reset(vcpu);
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vcpu->mp_state = VCPU_MP_STATE_RUNNABLE;
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}
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preempted:
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if (vcpu->guest_debug.enabled)
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kvm_x86_ops->guest_debug_pre(vcpu);
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again:
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r = kvm_mmu_reload(vcpu);
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if (unlikely(r))
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goto out;
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preempt_disable();
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kvm_x86_ops->prepare_guest_switch(vcpu);
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kvm_load_guest_fpu(vcpu);
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local_irq_disable();
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if (signal_pending(current)) {
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local_irq_enable();
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preempt_enable();
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r = -EINTR;
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kvm_run->exit_reason = KVM_EXIT_INTR;
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++vcpu->stat.signal_exits;
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goto out;
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}
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if (irqchip_in_kernel(vcpu->kvm))
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kvm_x86_ops->inject_pending_irq(vcpu);
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else if (!vcpu->mmio_read_completed)
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kvm_x86_ops->inject_pending_vectors(vcpu, kvm_run);
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vcpu->guest_mode = 1;
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if (vcpu->requests)
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if (test_and_clear_bit(KVM_TLB_FLUSH, &vcpu->requests))
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kvm_x86_ops->tlb_flush(vcpu);
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kvm_x86_ops->run(vcpu, kvm_run);
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vcpu->guest_mode = 0;
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local_irq_enable();
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++vcpu->stat.exits;
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preempt_enable();
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/*
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* Profile KVM exit RIPs:
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*/
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if (unlikely(prof_on == KVM_PROFILING)) {
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kvm_x86_ops->cache_regs(vcpu);
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profile_hit(KVM_PROFILING, (void *)vcpu->rip);
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}
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r = kvm_x86_ops->handle_exit(kvm_run, vcpu);
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if (r > 0) {
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if (dm_request_for_irq_injection(vcpu, kvm_run)) {
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r = -EINTR;
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kvm_run->exit_reason = KVM_EXIT_INTR;
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++vcpu->stat.request_irq_exits;
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goto out;
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}
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if (!need_resched()) {
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++vcpu->stat.light_exits;
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goto again;
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}
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}
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out:
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if (r > 0) {
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kvm_resched(vcpu);
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goto preempted;
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}
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post_kvm_run_save(vcpu, kvm_run);
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return r;
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}
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static int kvm_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
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static int kvm_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
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{
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{
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int r;
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int r;
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@ -2017,7 +2139,7 @@ static int kvm_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
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kvm_x86_ops->decache_regs(vcpu);
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kvm_x86_ops->decache_regs(vcpu);
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}
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}
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r = kvm_x86_ops->run(vcpu, kvm_run);
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r = __vcpu_run(vcpu, kvm_run);
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out:
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out:
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if (vcpu->sigset_active)
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if (vcpu->sigset_active)
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@ -22,7 +22,6 @@
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/vmalloc.h>
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#include <linux/vmalloc.h>
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#include <linux/highmem.h>
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#include <linux/highmem.h>
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#include <linux/profile.h>
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#include <linux/sched.h>
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#include <linux/sched.h>
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#include <asm/desc.h>
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#include <asm/desc.h>
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@ -50,6 +49,8 @@ MODULE_LICENSE("GPL");
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#define SVM_FEATURE_LBRV (1 << 1)
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#define SVM_FEATURE_LBRV (1 << 1)
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#define SVM_DEATURE_SVML (1 << 2)
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#define SVM_DEATURE_SVML (1 << 2)
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static void kvm_reput_irq(struct vcpu_svm *svm);
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static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
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static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
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{
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{
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return container_of(vcpu, struct vcpu_svm, vcpu);
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return container_of(vcpu, struct vcpu_svm, vcpu);
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@ -555,6 +556,13 @@ static void init_vmcb(struct vmcb *vmcb)
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/* rdx = ?? */
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/* rdx = ?? */
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}
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}
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static void svm_vcpu_reset(struct kvm_vcpu *vcpu)
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{
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struct vcpu_svm *svm = to_svm(vcpu);
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init_vmcb(svm->vmcb);
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}
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static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
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static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
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{
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{
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struct vcpu_svm *svm;
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struct vcpu_svm *svm;
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@ -1252,10 +1260,20 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm,
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};
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};
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static int handle_exit(struct vcpu_svm *svm, struct kvm_run *kvm_run)
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static int handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
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{
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{
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struct vcpu_svm *svm = to_svm(vcpu);
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u32 exit_code = svm->vmcb->control.exit_code;
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u32 exit_code = svm->vmcb->control.exit_code;
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kvm_reput_irq(svm);
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if (svm->vmcb->control.exit_code == SVM_EXIT_ERR) {
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kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
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kvm_run->fail_entry.hardware_entry_failure_reason
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= svm->vmcb->control.exit_code;
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return 0;
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}
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if (is_external_interrupt(svm->vmcb->control.exit_int_info) &&
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if (is_external_interrupt(svm->vmcb->control.exit_int_info) &&
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exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR)
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exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR)
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printk(KERN_ERR "%s: unexpected exit_ini_info 0x%x "
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printk(KERN_ERR "%s: unexpected exit_ini_info 0x%x "
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@ -1313,11 +1331,11 @@ static void svm_set_irq(struct kvm_vcpu *vcpu, int irq)
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svm_inject_irq(svm, irq);
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svm_inject_irq(svm, irq);
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}
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}
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static void svm_intr_assist(struct vcpu_svm *svm)
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static void svm_intr_assist(struct kvm_vcpu *vcpu)
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{
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{
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struct vcpu_svm *svm = to_svm(vcpu);
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struct vmcb *vmcb = svm->vmcb;
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struct vmcb *vmcb = svm->vmcb;
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int intr_vector = -1;
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int intr_vector = -1;
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struct kvm_vcpu *vcpu = &svm->vcpu;
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kvm_inject_pending_timer_irqs(vcpu);
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kvm_inject_pending_timer_irqs(vcpu);
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if ((vmcb->control.exit_int_info & SVM_EVTINJ_VALID) &&
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if ((vmcb->control.exit_int_info & SVM_EVTINJ_VALID) &&
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@ -1376,9 +1394,10 @@ static void svm_do_inject_vector(struct vcpu_svm *svm)
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svm_inject_irq(svm, irq);
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svm_inject_irq(svm, irq);
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}
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}
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static void do_interrupt_requests(struct vcpu_svm *svm,
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static void do_interrupt_requests(struct kvm_vcpu *vcpu,
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struct kvm_run *kvm_run)
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struct kvm_run *kvm_run)
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{
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{
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struct vcpu_svm *svm = to_svm(vcpu);
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struct vmcb_control_area *control = &svm->vmcb->control;
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struct vmcb_control_area *control = &svm->vmcb->control;
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svm->vcpu.interrupt_window_open =
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svm->vcpu.interrupt_window_open =
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@ -1401,35 +1420,6 @@ static void do_interrupt_requests(struct vcpu_svm *svm,
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control->intercept &= ~(1ULL << INTERCEPT_VINTR);
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control->intercept &= ~(1ULL << INTERCEPT_VINTR);
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}
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}
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static void post_kvm_run_save(struct vcpu_svm *svm,
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struct kvm_run *kvm_run)
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{
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if (irqchip_in_kernel(svm->vcpu.kvm))
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kvm_run->ready_for_interrupt_injection = 1;
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else
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kvm_run->ready_for_interrupt_injection =
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(svm->vcpu.interrupt_window_open &&
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svm->vcpu.irq_summary == 0);
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kvm_run->if_flag = (svm->vmcb->save.rflags & X86_EFLAGS_IF) != 0;
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kvm_run->cr8 = get_cr8(&svm->vcpu);
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kvm_run->apic_base = kvm_get_apic_base(&svm->vcpu);
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}
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/*
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* Check if userspace requested an interrupt window, and that the
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* interrupt window is open.
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*
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* No need to exit to userspace if we already have an interrupt queued.
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*/
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static int dm_request_for_irq_injection(struct vcpu_svm *svm,
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struct kvm_run *kvm_run)
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{
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return (!svm->vcpu.irq_summary &&
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kvm_run->request_interrupt_window &&
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svm->vcpu.interrupt_window_open &&
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(svm->vmcb->save.rflags & X86_EFLAGS_IF));
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}
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static void save_db_regs(unsigned long *db_regs)
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static void save_db_regs(unsigned long *db_regs)
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{
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{
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asm volatile ("mov %%dr0, %0" : "=r"(db_regs[0]));
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asm volatile ("mov %%dr0, %0" : "=r"(db_regs[0]));
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@ -1451,38 +1441,16 @@ static void svm_flush_tlb(struct kvm_vcpu *vcpu)
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force_new_asid(vcpu);
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force_new_asid(vcpu);
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}
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}
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static int svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
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static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu)
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{
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}
|
||||||
|
|
||||||
|
static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
|
||||||
{
|
{
|
||||||
struct vcpu_svm *svm = to_svm(vcpu);
|
struct vcpu_svm *svm = to_svm(vcpu);
|
||||||
u16 fs_selector;
|
u16 fs_selector;
|
||||||
u16 gs_selector;
|
u16 gs_selector;
|
||||||
u16 ldt_selector;
|
u16 ldt_selector;
|
||||||
int r;
|
|
||||||
|
|
||||||
again:
|
|
||||||
r = kvm_mmu_reload(vcpu);
|
|
||||||
if (unlikely(r))
|
|
||||||
return r;
|
|
||||||
|
|
||||||
clgi();
|
|
||||||
|
|
||||||
if (signal_pending(current)) {
|
|
||||||
stgi();
|
|
||||||
++vcpu->stat.signal_exits;
|
|
||||||
post_kvm_run_save(svm, kvm_run);
|
|
||||||
kvm_run->exit_reason = KVM_EXIT_INTR;
|
|
||||||
return -EINTR;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (irqchip_in_kernel(vcpu->kvm))
|
|
||||||
svm_intr_assist(svm);
|
|
||||||
else if (!vcpu->mmio_read_completed)
|
|
||||||
do_interrupt_requests(svm, kvm_run);
|
|
||||||
|
|
||||||
vcpu->guest_mode = 1;
|
|
||||||
if (vcpu->requests)
|
|
||||||
if (test_and_clear_bit(KVM_TLB_FLUSH, &vcpu->requests))
|
|
||||||
svm_flush_tlb(vcpu);
|
|
||||||
|
|
||||||
pre_svm_run(svm);
|
pre_svm_run(svm);
|
||||||
|
|
||||||
|
@ -1501,10 +1469,9 @@ again:
|
||||||
load_db_regs(svm->db_regs);
|
load_db_regs(svm->db_regs);
|
||||||
}
|
}
|
||||||
|
|
||||||
if (vcpu->fpu_active) {
|
clgi();
|
||||||
fx_save(&vcpu->host_fx_image);
|
|
||||||
fx_restore(&vcpu->guest_fx_image);
|
local_irq_enable();
|
||||||
}
|
|
||||||
|
|
||||||
asm volatile (
|
asm volatile (
|
||||||
#ifdef CONFIG_X86_64
|
#ifdef CONFIG_X86_64
|
||||||
|
@ -1612,12 +1579,9 @@ again:
|
||||||
#endif
|
#endif
|
||||||
: "cc", "memory" );
|
: "cc", "memory" );
|
||||||
|
|
||||||
vcpu->guest_mode = 0;
|
local_irq_disable();
|
||||||
|
|
||||||
if (vcpu->fpu_active) {
|
stgi();
|
||||||
fx_save(&vcpu->guest_fx_image);
|
|
||||||
fx_restore(&vcpu->host_fx_image);
|
|
||||||
}
|
|
||||||
|
|
||||||
if ((svm->vmcb->save.dr7 & 0xff))
|
if ((svm->vmcb->save.dr7 & 0xff))
|
||||||
load_db_regs(svm->host_db_regs);
|
load_db_regs(svm->host_db_regs);
|
||||||
|
@ -1635,40 +1599,7 @@ again:
|
||||||
|
|
||||||
reload_tss(vcpu);
|
reload_tss(vcpu);
|
||||||
|
|
||||||
/*
|
|
||||||
* Profile KVM exit RIPs:
|
|
||||||
*/
|
|
||||||
if (unlikely(prof_on == KVM_PROFILING))
|
|
||||||
profile_hit(KVM_PROFILING,
|
|
||||||
(void *)(unsigned long)svm->vmcb->save.rip);
|
|
||||||
|
|
||||||
stgi();
|
|
||||||
|
|
||||||
kvm_reput_irq(svm);
|
|
||||||
|
|
||||||
svm->next_rip = 0;
|
svm->next_rip = 0;
|
||||||
|
|
||||||
if (svm->vmcb->control.exit_code == SVM_EXIT_ERR) {
|
|
||||||
kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
|
|
||||||
kvm_run->fail_entry.hardware_entry_failure_reason
|
|
||||||
= svm->vmcb->control.exit_code;
|
|
||||||
post_kvm_run_save(svm, kvm_run);
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
r = handle_exit(svm, kvm_run);
|
|
||||||
if (r > 0) {
|
|
||||||
if (dm_request_for_irq_injection(svm, kvm_run)) {
|
|
||||||
++vcpu->stat.request_irq_exits;
|
|
||||||
post_kvm_run_save(svm, kvm_run);
|
|
||||||
kvm_run->exit_reason = KVM_EXIT_INTR;
|
|
||||||
return -EINTR;
|
|
||||||
}
|
|
||||||
kvm_resched(vcpu);
|
|
||||||
goto again;
|
|
||||||
}
|
|
||||||
post_kvm_run_save(svm, kvm_run);
|
|
||||||
return r;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)
|
static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)
|
||||||
|
@ -1752,7 +1683,9 @@ static struct kvm_x86_ops svm_x86_ops = {
|
||||||
|
|
||||||
.vcpu_create = svm_create_vcpu,
|
.vcpu_create = svm_create_vcpu,
|
||||||
.vcpu_free = svm_free_vcpu,
|
.vcpu_free = svm_free_vcpu,
|
||||||
|
.vcpu_reset = svm_vcpu_reset,
|
||||||
|
|
||||||
|
.prepare_guest_switch = svm_prepare_guest_switch,
|
||||||
.vcpu_load = svm_vcpu_load,
|
.vcpu_load = svm_vcpu_load,
|
||||||
.vcpu_put = svm_vcpu_put,
|
.vcpu_put = svm_vcpu_put,
|
||||||
.vcpu_decache = svm_vcpu_decache,
|
.vcpu_decache = svm_vcpu_decache,
|
||||||
|
@ -1786,10 +1719,13 @@ static struct kvm_x86_ops svm_x86_ops = {
|
||||||
.inject_gp = svm_inject_gp,
|
.inject_gp = svm_inject_gp,
|
||||||
|
|
||||||
.run = svm_vcpu_run,
|
.run = svm_vcpu_run,
|
||||||
|
.handle_exit = handle_exit,
|
||||||
.skip_emulated_instruction = skip_emulated_instruction,
|
.skip_emulated_instruction = skip_emulated_instruction,
|
||||||
.patch_hypercall = svm_patch_hypercall,
|
.patch_hypercall = svm_patch_hypercall,
|
||||||
.get_irq = svm_get_irq,
|
.get_irq = svm_get_irq,
|
||||||
.set_irq = svm_set_irq,
|
.set_irq = svm_set_irq,
|
||||||
|
.inject_pending_irq = svm_intr_assist,
|
||||||
|
.inject_pending_vectors = do_interrupt_requests,
|
||||||
};
|
};
|
||||||
|
|
||||||
static int __init svm_init(void)
|
static int __init svm_init(void)
|
||||||
|
|
|
@ -25,7 +25,6 @@
|
||||||
#include <linux/kernel.h>
|
#include <linux/kernel.h>
|
||||||
#include <linux/mm.h>
|
#include <linux/mm.h>
|
||||||
#include <linux/highmem.h>
|
#include <linux/highmem.h>
|
||||||
#include <linux/profile.h>
|
|
||||||
#include <linux/sched.h>
|
#include <linux/sched.h>
|
||||||
|
|
||||||
#include <asm/io.h>
|
#include <asm/io.h>
|
||||||
|
@ -355,8 +354,10 @@ static void load_transition_efer(struct vcpu_vmx *vmx)
|
||||||
vmx->vcpu.stat.efer_reload++;
|
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)
|
if (vmx->host_state.loaded)
|
||||||
return;
|
return;
|
||||||
|
|
||||||
|
@ -1598,6 +1599,13 @@ out:
|
||||||
return ret;
|
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)
|
static void inject_rmode_irq(struct kvm_vcpu *vcpu, int irq)
|
||||||
{
|
{
|
||||||
u16 ent[2];
|
u16 ent[2];
|
||||||
|
@ -2019,20 +2027,6 @@ static int handle_tpr_below_threshold(struct kvm_vcpu *vcpu,
|
||||||
return 1;
|
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,
|
static int handle_interrupt_window(struct kvm_vcpu *vcpu,
|
||||||
struct kvm_run *kvm_run)
|
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;
|
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)
|
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);
|
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);
|
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
|
* Loading guest fpu may have cleared host cr0.ts
|
||||||
*/
|
*/
|
||||||
vmcs_writel(HOST_CR0, read_cr0());
|
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 (
|
asm (
|
||||||
/* Store host registers */
|
/* Store host registers */
|
||||||
#ifdef CONFIG_X86_64
|
#ifdef CONFIG_X86_64
|
||||||
|
@ -2383,46 +2318,10 @@ again:
|
||||||
[cr2]"i"(offsetof(struct kvm_vcpu, cr2))
|
[cr2]"i"(offsetof(struct kvm_vcpu, cr2))
|
||||||
: "cc", "memory" );
|
: "cc", "memory" );
|
||||||
|
|
||||||
vcpu->guest_mode = 0;
|
|
||||||
local_irq_enable();
|
|
||||||
|
|
||||||
++vcpu->stat.exits;
|
|
||||||
|
|
||||||
vcpu->interrupt_window_open = (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & 3) == 0;
|
vcpu->interrupt_window_open = (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & 3) == 0;
|
||||||
|
|
||||||
asm ("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS));
|
asm ("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS));
|
||||||
vmx->launched = 1;
|
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,
|
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_create = vmx_create_vcpu,
|
||||||
.vcpu_free = vmx_free_vcpu,
|
.vcpu_free = vmx_free_vcpu,
|
||||||
|
.vcpu_reset = vmx_vcpu_reset,
|
||||||
|
|
||||||
|
.prepare_guest_switch = vmx_save_host_state,
|
||||||
.vcpu_load = vmx_vcpu_load,
|
.vcpu_load = vmx_vcpu_load,
|
||||||
.vcpu_put = vmx_vcpu_put,
|
.vcpu_put = vmx_vcpu_put,
|
||||||
.vcpu_decache = vmx_vcpu_decache,
|
.vcpu_decache = vmx_vcpu_decache,
|
||||||
|
|
||||||
.set_guest_debug = set_guest_debug,
|
.set_guest_debug = set_guest_debug,
|
||||||
|
.guest_debug_pre = kvm_guest_debug_pre,
|
||||||
.get_msr = vmx_get_msr,
|
.get_msr = vmx_get_msr,
|
||||||
.set_msr = vmx_set_msr,
|
.set_msr = vmx_set_msr,
|
||||||
.get_segment_base = vmx_get_segment_base,
|
.get_segment_base = vmx_get_segment_base,
|
||||||
|
@ -2594,10 +2496,13 @@ static struct kvm_x86_ops vmx_x86_ops = {
|
||||||
.inject_gp = vmx_inject_gp,
|
.inject_gp = vmx_inject_gp,
|
||||||
|
|
||||||
.run = vmx_vcpu_run,
|
.run = vmx_vcpu_run,
|
||||||
|
.handle_exit = kvm_handle_exit,
|
||||||
.skip_emulated_instruction = skip_emulated_instruction,
|
.skip_emulated_instruction = skip_emulated_instruction,
|
||||||
.patch_hypercall = vmx_patch_hypercall,
|
.patch_hypercall = vmx_patch_hypercall,
|
||||||
.get_irq = vmx_get_irq,
|
.get_irq = vmx_get_irq,
|
||||||
.set_irq = vmx_inject_irq,
|
.set_irq = vmx_inject_irq,
|
||||||
|
.inject_pending_irq = vmx_intr_assist,
|
||||||
|
.inject_pending_vectors = do_interrupt_requests,
|
||||||
};
|
};
|
||||||
|
|
||||||
static int __init vmx_init(void)
|
static int __init vmx_init(void)
|
||||||
|
|
Loading…
Add table
Reference in a new issue