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Diffstat (limited to 'arch/x86/kvm/vmx.c')
-rw-r--r--arch/x86/kvm/vmx.c81
1 files changed, 40 insertions, 41 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index a236decb81e4..7c3e42623090 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -4953,7 +4953,7 @@ static bool vmx_get_enable_apicv(void)
return enable_apicv;
}
-static int vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
+static void vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
int max_irr;
@@ -4964,19 +4964,15 @@ static int vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
vmx->nested.pi_pending) {
vmx->nested.pi_pending = false;
if (!pi_test_and_clear_on(vmx->nested.pi_desc))
- return 0;
+ return;
max_irr = find_last_bit(
(unsigned long *)vmx->nested.pi_desc->pir, 256);
if (max_irr == 256)
- return 0;
+ return;
vapic_page = kmap(vmx->nested.virtual_apic_page);
- if (!vapic_page) {
- WARN_ON(1);
- return -ENOMEM;
- }
__kvm_apic_update_irr(vmx->nested.pi_desc->pir, vapic_page);
kunmap(vmx->nested.virtual_apic_page);
@@ -4987,7 +4983,6 @@ static int vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
vmcs_write16(GUEST_INTR_STATUS, status);
}
}
- return 0;
}
static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu)
@@ -5236,10 +5231,8 @@ static void ept_set_mmio_spte_mask(void)
/*
* EPT Misconfigurations can be generated if the value of bits 2:0
* of an EPT paging-structure entry is 110b (write/execute).
- * Also, magic bits (0x3ull << 62) is set to quickly identify mmio
- * spte.
*/
- kvm_mmu_set_mmio_spte_mask((0x3ull << 62) | 0x6ull);
+ kvm_mmu_set_mmio_spte_mask(VMX_EPT_MISCONFIG_WX_VALUE);
}
#define VMX_XSS_EXIT_BITMAP 0
@@ -6152,7 +6145,7 @@ static int handle_wrmsr(struct kvm_vcpu *vcpu)
static int handle_tpr_below_threshold(struct kvm_vcpu *vcpu)
{
- kvm_make_request(KVM_REQ_EVENT, vcpu);
+ kvm_apic_update_ppr(vcpu);
return 1;
}
@@ -6374,14 +6367,20 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu)
gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);
trace_kvm_page_fault(gpa, exit_qualification);
- /* it is a read fault? */
- error_code = (exit_qualification << 2) & PFERR_USER_MASK;
- /* it is a write fault? */
- error_code |= exit_qualification & PFERR_WRITE_MASK;
- /* It is a fetch fault? */
- error_code |= (exit_qualification << 2) & PFERR_FETCH_MASK;
- /* ept page table is present? */
- error_code |= (exit_qualification & 0x38) != 0;
+ /* Is it a read fault? */
+ error_code = (exit_qualification & EPT_VIOLATION_ACC_READ)
+ ? PFERR_USER_MASK : 0;
+ /* Is it a write fault? */
+ error_code |= (exit_qualification & EPT_VIOLATION_ACC_WRITE)
+ ? PFERR_WRITE_MASK : 0;
+ /* Is it a fetch fault? */
+ error_code |= (exit_qualification & EPT_VIOLATION_ACC_INSTR)
+ ? PFERR_FETCH_MASK : 0;
+ /* ept page table entry is present? */
+ error_code |= (exit_qualification &
+ (EPT_VIOLATION_READABLE | EPT_VIOLATION_WRITABLE |
+ EPT_VIOLATION_EXECUTABLE))
+ ? PFERR_PRESENT_MASK : 0;
vcpu->arch.exit_qualification = exit_qualification;
@@ -6572,6 +6571,19 @@ static void wakeup_handler(void)
spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
}
+void vmx_enable_tdp(void)
+{
+ kvm_mmu_set_mask_ptes(VMX_EPT_READABLE_MASK,
+ enable_ept_ad_bits ? VMX_EPT_ACCESS_BIT : 0ull,
+ enable_ept_ad_bits ? VMX_EPT_DIRTY_BIT : 0ull,
+ 0ull, VMX_EPT_EXECUTABLE_MASK,
+ cpu_has_vmx_ept_execute_only() ? 0ull : VMX_EPT_READABLE_MASK,
+ enable_ept_ad_bits ? 0ull : VMX_EPT_RWX_MASK);
+
+ ept_set_mmio_spte_mask();
+ kvm_enable_tdp();
+}
+
static __init int hardware_setup(void)
{
int r = -ENOMEM, i, msr;
@@ -6697,16 +6709,9 @@ static __init int hardware_setup(void)
/* SELF-IPI */
vmx_disable_intercept_msr_x2apic(0x83f, MSR_TYPE_W, true);
- if (enable_ept) {
- kvm_mmu_set_mask_ptes(VMX_EPT_READABLE_MASK,
- (enable_ept_ad_bits) ? VMX_EPT_ACCESS_BIT : 0ull,
- (enable_ept_ad_bits) ? VMX_EPT_DIRTY_BIT : 0ull,
- 0ull, VMX_EPT_EXECUTABLE_MASK,
- cpu_has_vmx_ept_execute_only() ?
- 0ull : VMX_EPT_READABLE_MASK);
- ept_set_mmio_spte_mask();
- kvm_enable_tdp();
- } else
+ if (enable_ept)
+ vmx_enable_tdp();
+ else
kvm_disable_tdp();
update_ple_window_actual_max();
@@ -7168,9 +7173,6 @@ static int handle_vmon(struct kvm_vcpu *vcpu)
return 1;
}
- if (nested_vmx_check_vmptr(vcpu, EXIT_REASON_VMON, NULL))
- return 1;
-
if (vmx->nested.vmxon) {
nested_vmx_failValid(vcpu, VMXERR_VMXON_IN_VMX_ROOT_OPERATION);
return kvm_skip_emulated_instruction(vcpu);
@@ -7182,6 +7184,9 @@ static int handle_vmon(struct kvm_vcpu *vcpu)
return 1;
}
+ if (nested_vmx_check_vmptr(vcpu, EXIT_REASON_VMON, NULL))
+ return 1;
+
if (cpu_has_vmx_msr_bitmap()) {
vmx->nested.msr_bitmap =
(unsigned long *)__get_free_page(GFP_KERNEL);
@@ -8191,8 +8196,6 @@ static bool nested_vmx_exit_handled(struct kvm_vcpu *vcpu)
case EXIT_REASON_TASK_SWITCH:
return true;
case EXIT_REASON_CPUID:
- if (kvm_register_read(vcpu, VCPU_REGS_RAX) == 0xa)
- return false;
return true;
case EXIT_REASON_HLT:
return nested_cpu_has(vmcs12, CPU_BASED_HLT_EXITING);
@@ -9730,11 +9733,6 @@ static inline bool nested_vmx_merge_msr_bitmap(struct kvm_vcpu *vcpu,
return false;
}
msr_bitmap_l1 = (unsigned long *)kmap(page);
- if (!msr_bitmap_l1) {
- nested_release_page_clean(page);
- WARN_ON(1);
- return false;
- }
memset(msr_bitmap_l0, 0xff, PAGE_SIZE);
@@ -10696,7 +10694,8 @@ static int vmx_check_nested_events(struct kvm_vcpu *vcpu, bool external_intr)
return 0;
}
- return vmx_complete_nested_posted_interrupt(vcpu);
+ vmx_complete_nested_posted_interrupt(vcpu);
+ return 0;
}
static u32 vmx_get_preemption_timer_value(struct kvm_vcpu *vcpu)
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-15 12:58:39 +0000