#include "trace.h"
#include "mmu.h"
#include "x86.h"
+#include "lapic.h"
#include "svm.h"
static void nested_svm_inject_npf_exit(struct kvm_vcpu *vcpu,
return true;
}
-void enter_svm_guest_mode(struct vcpu_svm *svm, u64 vmcb_gpa,
- struct vmcb *nested_vmcb, struct kvm_host_map *map)
+static void load_nested_vmcb_control(struct vcpu_svm *svm,
+ struct vmcb_control_area *control)
{
- bool evaluate_pending_interrupts =
- is_intercept(svm, INTERCEPT_VINTR) ||
- is_intercept(svm, INTERCEPT_IRET);
+ svm->nested.nested_cr3 = control->nested_cr3;
- if (kvm_get_rflags(&svm->vcpu) & X86_EFLAGS_IF)
- svm->vcpu.arch.hflags |= HF_HIF_MASK;
- else
- svm->vcpu.arch.hflags &= ~HF_HIF_MASK;
+ svm->nested.vmcb_msrpm = control->msrpm_base_pa & ~0x0fffULL;
+ svm->nested.vmcb_iopm = control->iopm_base_pa & ~0x0fffULL;
- if (nested_vmcb->control.nested_ctl & SVM_NESTED_CTL_NP_ENABLE) {
- svm->nested.nested_cr3 = nested_vmcb->control.nested_cr3;
+ /* cache intercepts */
+ svm->nested.intercept_cr = control->intercept_cr;
+ svm->nested.intercept_dr = control->intercept_dr;
+ svm->nested.intercept_exceptions = control->intercept_exceptions;
+ svm->nested.intercept = control->intercept;
+
+ svm->vcpu.arch.tsc_offset += control->tsc_offset;
+}
+
+static void nested_prepare_vmcb_save(struct vcpu_svm *svm, struct vmcb *nested_vmcb)
+{
+ if (nested_vmcb->control.nested_ctl & SVM_NESTED_CTL_NP_ENABLE)
nested_svm_init_mmu_context(&svm->vcpu);
- }
/* Load the nested guest state */
svm->vmcb->save.es = nested_vmcb->save.es;
svm_set_efer(&svm->vcpu, nested_vmcb->save.efer);
svm_set_cr0(&svm->vcpu, nested_vmcb->save.cr0);
svm_set_cr4(&svm->vcpu, nested_vmcb->save.cr4);
- if (npt_enabled) {
- svm->vmcb->save.cr3 = nested_vmcb->save.cr3;
- svm->vcpu.arch.cr3 = nested_vmcb->save.cr3;
- } else
- (void)kvm_set_cr3(&svm->vcpu, nested_vmcb->save.cr3);
+ (void)kvm_set_cr3(&svm->vcpu, nested_vmcb->save.cr3);
/* Guest paging mode is active - reset mmu */
kvm_mmu_reset_context(&svm->vcpu);
svm->vmcb->save.dr7 = nested_vmcb->save.dr7;
svm->vcpu.arch.dr6 = nested_vmcb->save.dr6;
svm->vmcb->save.cpl = nested_vmcb->save.cpl;
+}
- svm->nested.vmcb_msrpm = nested_vmcb->control.msrpm_base_pa & ~0x0fffULL;
- svm->nested.vmcb_iopm = nested_vmcb->control.iopm_base_pa & ~0x0fffULL;
-
- /* cache intercepts */
- svm->nested.intercept_cr = nested_vmcb->control.intercept_cr;
- svm->nested.intercept_dr = nested_vmcb->control.intercept_dr;
- svm->nested.intercept_exceptions = nested_vmcb->control.intercept_exceptions;
- svm->nested.intercept = nested_vmcb->control.intercept;
-
+static void nested_prepare_vmcb_control(struct vcpu_svm *svm, struct vmcb *nested_vmcb)
+{
svm_flush_tlb(&svm->vcpu);
- svm->vmcb->control.int_ctl = nested_vmcb->control.int_ctl | V_INTR_MASKING_MASK;
if (nested_vmcb->control.int_ctl & V_INTR_MASKING_MASK)
svm->vcpu.arch.hflags |= HF_VINTR_MASK;
else
svm->vcpu.arch.hflags &= ~HF_VINTR_MASK;
- svm->vcpu.arch.tsc_offset += nested_vmcb->control.tsc_offset;
svm->vmcb->control.tsc_offset = svm->vcpu.arch.tsc_offset;
+ svm->vmcb->control.int_ctl = nested_vmcb->control.int_ctl | V_INTR_MASKING_MASK;
svm->vmcb->control.virt_ext = nested_vmcb->control.virt_ext;
svm->vmcb->control.int_vector = nested_vmcb->control.int_vector;
svm->vmcb->control.int_state = nested_vmcb->control.int_state;
svm->vmcb->control.pause_filter_thresh =
nested_vmcb->control.pause_filter_thresh;
- kvm_vcpu_unmap(&svm->vcpu, map, true);
-
/* Enter Guest-Mode */
enter_guest_mode(&svm->vcpu);
*/
recalc_intercepts(svm);
+ mark_all_dirty(svm->vmcb);
+}
+
+void enter_svm_guest_mode(struct vcpu_svm *svm, u64 vmcb_gpa,
+ struct vmcb *nested_vmcb)
+{
+ bool evaluate_pending_interrupts =
+ is_intercept(svm, INTERCEPT_VINTR) ||
+ is_intercept(svm, INTERCEPT_IRET);
+
svm->nested.vmcb = vmcb_gpa;
+ if (kvm_get_rflags(&svm->vcpu) & X86_EFLAGS_IF)
+ svm->vcpu.arch.hflags |= HF_HIF_MASK;
+ else
+ svm->vcpu.arch.hflags &= ~HF_HIF_MASK;
+
+ load_nested_vmcb_control(svm, &nested_vmcb->control);
+ nested_prepare_vmcb_save(svm, nested_vmcb);
+ nested_prepare_vmcb_control(svm, nested_vmcb);
/*
* If L1 had a pending IRQ/NMI before executing VMRUN,
enable_gif(svm);
if (unlikely(evaluate_pending_interrupts))
kvm_make_request(KVM_REQ_EVENT, &svm->vcpu);
-
- mark_all_dirty(svm->vmcb);
}
int nested_svm_vmrun(struct vcpu_svm *svm)
nested_vmcb->control.exit_code_hi = 0;
nested_vmcb->control.exit_info_1 = 0;
nested_vmcb->control.exit_info_2 = 0;
-
- kvm_vcpu_unmap(&svm->vcpu, &map, true);
-
- return ret;
+ goto out;
}
trace_kvm_nested_vmrun(svm->vmcb->save.rip, vmcb_gpa,
copy_vmcb_control_area(hsave, vmcb);
svm->nested.nested_run_pending = 1;
- enter_svm_guest_mode(svm, vmcb_gpa, nested_vmcb, &map);
+ enter_svm_guest_mode(svm, vmcb_gpa, nested_vmcb);
if (!nested_svm_vmrun_msrpm(svm)) {
svm->vmcb->control.exit_code = SVM_EXIT_ERR;
nested_svm_vmexit(svm);
}
+out:
+ kvm_vcpu_unmap(&svm->vcpu, &map, true);
+
return ret;
}
nested_svm_vmexit(svm);
}
+static inline bool nested_exit_on_init(struct vcpu_svm *svm)
+{
+ return (svm->nested.intercept & (1ULL << INTERCEPT_INIT));
+}
+
+static void nested_svm_init(struct vcpu_svm *svm)
+{
+ svm->vmcb->control.exit_code = SVM_EXIT_INIT;
+ svm->vmcb->control.exit_info_1 = 0;
+ svm->vmcb->control.exit_info_2 = 0;
+
+ nested_svm_vmexit(svm);
+}
+
+
static int svm_check_nested_events(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
bool block_nested_events =
- kvm_event_needs_reinjection(vcpu) || svm->nested.exit_required ||
- svm->nested.nested_run_pending;
+ kvm_event_needs_reinjection(vcpu) || svm->nested.nested_run_pending;
+ struct kvm_lapic *apic = vcpu->arch.apic;
+
+ if (lapic_in_kernel(vcpu) &&
+ test_bit(KVM_APIC_INIT, &apic->pending_events)) {
+ if (block_nested_events)
+ return -EBUSY;
+ if (!nested_exit_on_init(svm))
+ return 0;
+ nested_svm_init(svm);
+ return 0;
+ }
if (vcpu->arch.exception.pending) {
if (block_nested_events)
projects / linux-2.6-microblaze.git / blobdiff