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@@ -22,7 +22,6 @@
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#include <linux/kernel.h>
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#include <linux/vmalloc.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 <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_DEATURE_SVML (1 << 2)
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+static void kvm_reput_irq(struct vcpu_svm *svm);
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+
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static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
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{
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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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}
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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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+
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+ init_vmcb(svm->vmcb);
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+}
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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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{
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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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-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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+ struct vcpu_svm *svm = to_svm(vcpu);
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u32 exit_code = svm->vmcb->control.exit_code;
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+ kvm_reput_irq(svm);
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+
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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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+
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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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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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}
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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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+ struct vcpu_svm *svm = to_svm(vcpu);
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struct vmcb *vmcb = svm->vmcb;
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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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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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}
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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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{
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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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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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}
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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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-/*
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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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-
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static void save_db_regs(unsigned long *db_regs)
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{
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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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}
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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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+}
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+
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+static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
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{
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struct vcpu_svm *svm = to_svm(vcpu);
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u16 fs_selector;
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u16 gs_selector;
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u16 ldt_selector;
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- int r;
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-
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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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- return r;
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-
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- clgi();
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-
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- if (signal_pending(current)) {
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- stgi();
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- ++vcpu->stat.signal_exits;
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- post_kvm_run_save(svm, kvm_run);
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- kvm_run->exit_reason = KVM_EXIT_INTR;
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- return -EINTR;
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- }
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-
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- if (irqchip_in_kernel(vcpu->kvm))
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- svm_intr_assist(svm);
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- else if (!vcpu->mmio_read_completed)
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- do_interrupt_requests(svm, kvm_run);
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-
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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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- svm_flush_tlb(vcpu);
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pre_svm_run(svm);
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@@ -1501,10 +1469,9 @@ again:
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load_db_regs(svm->db_regs);
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}
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- if (vcpu->fpu_active) {
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- fx_save(&vcpu->host_fx_image);
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- fx_restore(&vcpu->guest_fx_image);
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- }
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+ clgi();
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+
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+ local_irq_enable();
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asm volatile (
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#ifdef CONFIG_X86_64
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@@ -1612,12 +1579,9 @@ again:
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#endif
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: "cc", "memory" );
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- vcpu->guest_mode = 0;
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+ local_irq_disable();
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- if (vcpu->fpu_active) {
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- fx_save(&vcpu->guest_fx_image);
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- fx_restore(&vcpu->host_fx_image);
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- }
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+ stgi();
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if ((svm->vmcb->save.dr7 & 0xff))
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load_db_regs(svm->host_db_regs);
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@@ -1635,40 +1599,7 @@ again:
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reload_tss(vcpu);
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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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- profile_hit(KVM_PROFILING,
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- (void *)(unsigned long)svm->vmcb->save.rip);
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-
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- stgi();
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-
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- kvm_reput_irq(svm);
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-
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svm->next_rip = 0;
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-
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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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- post_kvm_run_save(svm, kvm_run);
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- return 0;
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- }
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-
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- r = handle_exit(svm, kvm_run);
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- if (r > 0) {
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- if (dm_request_for_irq_injection(svm, kvm_run)) {
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- ++vcpu->stat.request_irq_exits;
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- post_kvm_run_save(svm, kvm_run);
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- kvm_run->exit_reason = KVM_EXIT_INTR;
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- return -EINTR;
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- }
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- kvm_resched(vcpu);
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- goto again;
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- }
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- post_kvm_run_save(svm, kvm_run);
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- return r;
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}
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static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)
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@@ -1752,7 +1683,9 @@ static struct kvm_x86_ops svm_x86_ops = {
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.vcpu_create = svm_create_vcpu,
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.vcpu_free = svm_free_vcpu,
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+ .vcpu_reset = svm_vcpu_reset,
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+ .prepare_guest_switch = svm_prepare_guest_switch,
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.vcpu_load = svm_vcpu_load,
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.vcpu_put = svm_vcpu_put,
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.vcpu_decache = svm_vcpu_decache,
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@@ -1786,10 +1719,13 @@ static struct kvm_x86_ops svm_x86_ops = {
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.inject_gp = svm_inject_gp,
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.run = svm_vcpu_run,
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+ .handle_exit = handle_exit,
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.skip_emulated_instruction = skip_emulated_instruction,
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.patch_hypercall = svm_patch_hypercall,
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.get_irq = svm_get_irq,
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.set_irq = svm_set_irq,
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+ .inject_pending_irq = svm_intr_assist,
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+ .inject_pending_vectors = do_interrupt_requests,
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};
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static int __init svm_init(void)
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