Displaying 9 results from an estimated 9 matches for "kvm_intercepted".
2020 Jul 21
0
[PATCH v9 74/84] KVM: introspection: restore the state of descriptor-table register interception on unhook
...bool write) { return true; }
diff --git a/arch/x86/kvm/kvmi.c b/arch/x86/kvm/kvmi.c
index 3ae43a4c8764..dfe1b887b4f3 100644
--- a/arch/x86/kvm/kvmi.c
+++ b/arch/x86/kvm/kvmi.c
@@ -361,12 +361,52 @@ static void kvmi_arch_disable_cr3w_intercept(struct kvm_vcpu *vcpu)
vcpu->arch.kvmi->cr3w.kvm_intercepted = false;
}
+/*
+ * Returns true if one side (kvm or kvmi) tries to disable the descriptor
+ * interception while the other side is still tracking it.
+ */
+bool kvmi_monitor_desc_intercept(struct kvm_vcpu *vcpu, bool enable)
+{
+ struct kvmi_interception *arch_vcpui = READ_ONCE(vcpu->arch.kvm...
2020 Feb 07
0
[RFC PATCH v7 61/78] KVM: introspection: restore the state of CR3 interception on unhook
...CONFIG_KVM_INTROSPECTION */
diff --git a/arch/x86/kvm/kvmi.c b/arch/x86/kvm/kvmi.c
index 9917295e9a56..a522d4b1fa09 100644
--- a/arch/x86/kvm/kvmi.c
+++ b/arch/x86/kvm/kvmi.c
@@ -258,6 +258,59 @@ static void kvmi_arch_disable_bp_intercept(struct kvm_vcpu *vcpu)
vcpu->arch.kvmi->breakpoint.kvm_intercepted = false;
}
+static bool monitor_cr3w_fct_kvmi(struct kvm_vcpu *vcpu, bool enable)
+{
+ vcpu->arch.kvmi->cr3w.kvmi_intercepted = enable;
+
+ if (enable)
+ vcpu->arch.kvmi->cr3w.kvm_intercepted =
+ kvm_x86_ops->cr3_write_intercepted(vcpu);
+ else if (vcpu->arch.kvmi->cr3w.k...
2020 Feb 07
0
[RFC PATCH v7 59/78] KVM: introspection: restore the state of #BP interception on unhook
.../arch/x86/include/asm/kvmi_host.h
index 360a57dd9019..c8b793915b84 100644
--- a/arch/x86/include/asm/kvmi_host.h
+++ b/arch/x86/include/asm/kvmi_host.h
@@ -2,10 +2,32 @@
#ifndef _ASM_X86_KVMI_HOST_H
#define _ASM_X86_KVMI_HOST_H
+struct kvmi_monitor_interception {
+ bool kvmi_intercepted;
+ bool kvm_intercepted;
+ bool (*monitor_fct)(struct kvm_vcpu *vcpu, bool enable);
+};
+
+struct kvmi_interception {
+ bool restore_interception;
+ struct kvmi_monitor_interception breakpoint;
+};
+
struct kvm_vcpu_arch_introspection {
};
struct kvm_arch_introspection {
};
+#ifdef CONFIG_KVM_INTROSPECTION
+
+bool...
2020 Feb 07
0
[RFC PATCH v7 70/78] KVM: introspection: restore the state of MSR interception on unhook
...FIG_KVM_INTROSPECTION */
diff --git a/arch/x86/kvm/kvmi.c b/arch/x86/kvm/kvmi.c
index 7705ac155c84..bed6e02697ca 100644
--- a/arch/x86/kvm/kvmi.c
+++ b/arch/x86/kvm/kvmi.c
@@ -369,22 +369,25 @@ static void kvmi_arch_disable_desc_intercept(struct kvm_vcpu *vcpu)
vcpu->arch.kvmi->descriptor.kvm_intercepted = false;
}
-static unsigned long *msr_mask(struct kvm_vcpu *vcpu, unsigned int *msr)
+static unsigned long *msr_mask(struct kvm_vcpu *vcpu, unsigned int *msr,
+ bool kvmi)
{
switch (*msr) {
case 0 ... 0x1fff:
- return vcpu->arch.kvmi->msrw.kvmi_mask.low;
+ return kvmi ? vcp...
2020 Feb 07
0
[RFC PATCH v7 69/78] KVM: introspection: add KVMI_VCPU_CONTROL_MSR and KVMI_EVENT_MSR
.../* _UAPI_ASM_X86_KVMI_H */
diff --git a/arch/x86/kvm/kvmi.c b/arch/x86/kvm/kvmi.c
index 048f0e1f9f79..7705ac155c84 100644
--- a/arch/x86/kvm/kvmi.c
+++ b/arch/x86/kvm/kvmi.c
@@ -369,6 +369,72 @@ static void kvmi_arch_disable_desc_intercept(struct kvm_vcpu *vcpu)
vcpu->arch.kvmi->descriptor.kvm_intercepted = false;
}
+static unsigned long *msr_mask(struct kvm_vcpu *vcpu, unsigned int *msr)
+{
+ switch (*msr) {
+ case 0 ... 0x1fff:
+ return vcpu->arch.kvmi->msrw.kvmi_mask.low;
+ case 0xc0000000 ... 0xc0001fff:
+ *msr &= 0x1fff;
+ return vcpu->arch.kvmi->msrw.kvmi_mask.high;
+ }
+...
2020 Jul 21
0
[PATCH v9 75/84] KVM: introspection: add KVMI_VCPU_CONTROL_MSR and KVMI_EVENT_MSR
.../* _UAPI_ASM_X86_KVMI_H */
diff --git a/arch/x86/kvm/kvmi.c b/arch/x86/kvm/kvmi.c
index dfe1b887b4f3..a48e72f520da 100644
--- a/arch/x86/kvm/kvmi.c
+++ b/arch/x86/kvm/kvmi.c
@@ -419,6 +419,76 @@ static void kvmi_arch_disable_desc_intercept(struct kvm_vcpu *vcpu)
vcpu->arch.kvmi->descriptor.kvm_intercepted = false;
}
+static bool kvmi_msr_valid(unsigned int msr)
+{
+ return msr <= 0x1fff || (msr >= 0xc0000000 && msr <= 0xc0001fff);
+}
+
+static unsigned long *msr_mask(struct kvm_vcpu *vcpu, unsigned int *msr)
+{
+ switch (*msr) {
+ case 0 ... 0x1fff:
+ return vcpu->arch.kvmi-&...
2020 Feb 07
0
[RFC PATCH v7 60/78] KVM: introspection: add KVMI_VCPU_CONTROL_CR and KVMI_EVENT_CR
...vmi_host.h
index c8b793915b84..4ac209cb4ebf 100644
--- a/arch/x86/include/asm/kvmi_host.h
+++ b/arch/x86/include/asm/kvmi_host.h
@@ -2,6 +2,8 @@
#ifndef _ASM_X86_KVMI_HOST_H
#define _ASM_X86_KVMI_HOST_H
+#define KVMI_NUM_CR 5
+
struct kvmi_monitor_interception {
bool kvmi_intercepted;
bool kvm_intercepted;
@@ -14,6 +16,7 @@ struct kvmi_interception {
};
struct kvm_vcpu_arch_introspection {
+ DECLARE_BITMAP(cr_mask, KVMI_NUM_CR);
};
struct kvm_arch_introspection {
@@ -22,11 +25,18 @@ struct kvm_arch_introspection {
#ifdef CONFIG_KVM_INTROSPECTION
bool kvmi_monitor_bp_intercept(struct kvm_...
2020 Feb 07
78
[RFC PATCH v7 00/78] VM introspection
The KVM introspection subsystem provides a facility for applications
running on the host or in a separate VM, to control the execution of
other VMs (pause, resume, shutdown), query the state of the vCPUs (GPRs,
MSRs etc.), alter the page access bits in the shadow page tables (only
for the hardware backed ones, eg. Intel's EPT) and receive notifications
when events of interest have taken place
2020 Jul 21
87
[PATCH v9 00/84] VM introspection
The KVM introspection subsystem provides a facility for applications
running on the host or in a separate VM, to control the execution of
other VMs (pause, resume, shutdown), query the state of the vCPUs (GPRs,
MSRs etc.), alter the page access bits in the shadow page tables (only
for the hardware backed ones, eg. Intel's EPT) and receive notifications
when events of interest have taken place