From: Mihai Donțu <mdontu@xxxxxxxxxxxxxxx>
This function is needed for kvmi_update_ad_flags()
and kvm_page_track_emulation_failure().
Signed-off-by: Mihai Donțu <mdontu@xxxxxxxxxxxxxxx>
Co-developed-by: Nicușor Cîțu <ncitu@xxxxxxxxxxxxxxx>
Signed-off-by: Nicușor Cîțu <ncitu@xxxxxxxxxxxxxxx>
Signed-off-by: Adalbert Lazăr <alazar@xxxxxxxxxxxxxxx>
---
arch/x86/include/asm/kvm_host.h | 2 ++
arch/x86/include/asm/vmx.h | 2 ++
arch/x86/kvm/svm.c | 9 +++++++++
arch/x86/kvm/vmx/vmx.c | 9 +++++++++
4 files changed, 22 insertions(+)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index fb1ac5646d33..c425bf1d257a 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1288,6 +1288,8 @@ struct kvm_x86_ops {
bool (*apic_init_signal_blocked)(struct kvm_vcpu *vcpu);
int (*enable_direct_tlbflush)(struct kvm_vcpu *vcpu);
+
+ u64 (*fault_gla)(struct kvm_vcpu *vcpu);
};
struct kvm_arch_async_pf {
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index 8521af3fef27..014cccb2d25d 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -529,6 +529,7 @@ struct vmx_msr_entry {
#define EPT_VIOLATION_READABLE_BIT 3
#define EPT_VIOLATION_WRITABLE_BIT 4
#define EPT_VIOLATION_EXECUTABLE_BIT 5
+#define EPT_VIOLATION_GLA_VALID_BIT 7
#define EPT_VIOLATION_GVA_TRANSLATED_BIT 8
#define EPT_VIOLATION_ACC_READ (1 << EPT_VIOLATION_ACC_READ_BIT)
#define EPT_VIOLATION_ACC_WRITE (1 << EPT_VIOLATION_ACC_WRITE_BIT)
@@ -536,6 +537,7 @@ struct vmx_msr_entry {
#define EPT_VIOLATION_READABLE (1 << EPT_VIOLATION_READABLE_BIT)
#define EPT_VIOLATION_WRITABLE (1 << EPT_VIOLATION_WRITABLE_BIT)
#define EPT_VIOLATION_EXECUTABLE (1 << EPT_VIOLATION_EXECUTABLE_BIT)
+#define EPT_VIOLATION_GLA_VALID (1 << EPT_VIOLATION_GLA_VALID_BIT)
#define EPT_VIOLATION_GVA_TRANSLATED (1 << EPT_VIOLATION_GVA_TRANSLATED_BIT)
/*
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index d7e1e2d20e49..767ffd3ce4b1 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -7522,6 +7522,13 @@ static void svm_control_msr_intercept(struct kvm_vcpu *vcpu, unsigned int msr,
set_msr_interception(vcpu, msrpm, msr, type, !enable);
}
+static u64 svm_fault_gla(struct kvm_vcpu *vcpu)
+{
+ const struct vcpu_svm *svm = to_svm(vcpu);
+
+ return svm->vcpu.arch.cr2 ? svm->vcpu.arch.cr2 : ~0ull;
+}
+
static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.cpu_has_kvm_support = has_svm,
.disabled_by_bios = is_disabled,
@@ -7670,6 +7677,8 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.need_emulation_on_page_fault = svm_need_emulation_on_page_fault,
.apic_init_signal_blocked = svm_apic_init_signal_blocked,
+
+ .fault_gla = svm_fault_gla,
};
static int __init svm_init(void)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index d3d5fcdd7534..c1c6485aebf1 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7907,6 +7907,13 @@ static void vmx_control_msr_intercept(struct kvm_vcpu *vcpu, unsigned int msr,
vmx_set_intercept_for_msr(vcpu, msr_bitmap, msr, type, enable);
}
+static u64 vmx_fault_gla(struct kvm_vcpu *vcpu)
+{
+ if (vcpu->arch.exit_qualification & EPT_VIOLATION_GLA_VALID)
+ return vmcs_readl(GUEST_LINEAR_ADDRESS);
+ return ~0ull;
+}
+
static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
@@ -8067,6 +8074,8 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.nested_get_evmcs_version = NULL,
.need_emulation_on_page_fault = vmx_need_emulation_on_page_fault,
.apic_init_signal_blocked = vmx_apic_init_signal_blocked,
+
+ .fault_gla = vmx_fault_gla,
};
static void vmx_cleanup_l1d_flush(void)
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