Displaying 9 results from an estimated 9 matches for "guest_code".
Did you mean:
guest_cid
2020 Feb 07
0
[RFC PATCH v7 64/78] KVM: introspection: add KVMI_EVENT_XSETBV
...)
+{
+ const int SSE_BIT = 1 << 1;
+ const int AVX_BIT = 1 << 2;
+ u64 xcr0;
+
+ /* avoid #UD */
+ set_cr4(get_cr4() | X86_CR4_OSXSAVE);
+
+ xcr0 = xgetbv(0);
+ if (xcr0 & AVX_BIT)
+ xcr0 &= ~AVX_BIT;
+ else
+ xcr0 |= (AVX_BIT | SSE_BIT);
+
+ xsetbv(0, xcr0);
+}
+
static void guest_code(void)
{
while (true) {
@@ -99,6 +141,9 @@ static void guest_code(void)
case GUEST_TEST_HYPERCALL:
guest_hypercall_test();
break;
+ case GUEST_TEST_XSETBV:
+ guest_xsetbv_test();
+ break;
}
GUEST_SIGNAL_TEST_DONE();
}
@@ -1240,6 +1285,43 @@ static void test_cmd_vm_get_max_...
2020 Jul 21
0
[PATCH v9 68/84] KVM: introspection: add KVMI_EVENT_XSETBV
...)
+{
+ const int SSE_BIT = 1 << 1;
+ const int AVX_BIT = 1 << 2;
+ u64 xcr0;
+
+ /* avoid #UD */
+ set_cr4(get_cr4() | X86_CR4_OSXSAVE);
+
+ xcr0 = xgetbv(0);
+ if (xcr0 & AVX_BIT)
+ xcr0 &= ~AVX_BIT;
+ else
+ xcr0 |= (AVX_BIT | SSE_BIT);
+
+ xsetbv(0, xcr0);
+}
+
static void guest_code(void)
{
while (true) {
@@ -104,6 +146,9 @@ static void guest_code(void)
case GUEST_TEST_HYPERCALL:
guest_hypercall_test();
break;
+ case GUEST_TEST_XSETBV:
+ guest_xsetbv_test();
+ break;
}
GUEST_SIGNAL_TEST_DONE();
}
@@ -1431,6 +1476,44 @@ static void test_cmd_vm_get_max...
2020 Feb 07
0
[RFC PATCH v7 57/78] KVM: introspection: add KVMI_EVENT_HYPERCALL
...ic int guest_test_id(void)
return READ_ONCE(test_id);
}
+static void guest_hypercall_test(void)
+{
+ asm volatile("mov $34, %rax");
+ asm volatile("mov $24, %rdi");
+ asm volatile("mov $0, %rsi");
+ asm volatile(".byte 0x0f,0x01,0xc1");
+}
+
static void guest_code(void)
{
while (true) {
switch (guest_test_id()) {
case GUEST_TEST_NOOP:
break;
+ case GUEST_TEST_HYPERCALL:
+ guest_hypercall_test();
+ break;
}
GUEST_SIGNAL_TEST_DONE();
}
@@ -942,6 +954,36 @@ static void test_cmd_vcpu_get_cpuid(struct kvm_vm *vm)
function, index,...
2020 Feb 07
0
[RFC PATCH v7 69/78] KVM: introspection: add KVMI_VCPU_CONTROL_MSR and KVMI_EVENT_MSR
...;);
}
+static void guest_msr_test(void)
+{
+ uint64_t msr;
+
+ msr = rdmsr(MSR_MISC_FEATURES_ENABLES);
+ msr |= 1; /* MSR_MISC_FEATURES_ENABLES_CPUID_FAULT */
+ wrmsr(MSR_MISC_FEATURES_ENABLES, msr);
+}
+
/* from fpu/internal.h */
static u64 xgetbv(u32 index)
{
@@ -153,6 +163,9 @@ static void guest_code(void)
case GUEST_TEST_HYPERCALL:
guest_hypercall_test();
break;
+ case GUEST_TEST_MSR:
+ guest_msr_test();
+ break;
case GUEST_TEST_XSETBV:
guest_xsetbv_test();
break;
@@ -1419,6 +1432,94 @@ static void test_event_descriptor(struct kvm_vm *vm)
disable_vcpu_event(vm, eve...
2020 Jul 21
0
[PATCH v9 75/84] KVM: introspection: add KVMI_VCPU_CONTROL_MSR and KVMI_EVENT_MSR
...;);
}
+static void guest_msr_test(void)
+{
+ uint64_t msr;
+
+ msr = rdmsr(MSR_MISC_FEATURES_ENABLES);
+ msr |= 1; /* MSR_MISC_FEATURES_ENABLES_CPUID_FAULT */
+ wrmsr(MSR_MISC_FEATURES_ENABLES, msr);
+}
+
/* from fpu/internal.h */
static u64 xgetbv(u32 index)
{
@@ -158,6 +168,9 @@ static void guest_code(void)
case GUEST_TEST_HYPERCALL:
guest_hypercall_test();
break;
+ case GUEST_TEST_MSR:
+ guest_msr_test();
+ break;
case GUEST_TEST_XSETBV:
guest_xsetbv_test();
break;
@@ -1691,6 +1704,111 @@ static void test_event_descriptor(struct kvm_vm *vm)
disable_vcpu_event(vm, ev...
2020 Feb 07
0
[RFC PATCH v7 60/78] KVM: introspection: add KVMI_VCPU_CONTROL_CR and KVMI_EVENT_CR
...RCALL,
};
@@ -68,6 +69,11 @@ static void guest_bp_test(void)
asm volatile("int3");
}
+static void guest_cr_test(void)
+{
+ set_cr4(get_cr4() | X86_CR4_OSXSAVE);
+}
+
static void guest_hypercall_test(void)
{
asm volatile("mov $34, %rax");
@@ -85,6 +91,9 @@ static void guest_code(void)
case GUEST_TEST_BP:
guest_bp_test();
break;
+ case GUEST_TEST_CR:
+ guest_cr_test();
+ break;
case GUEST_TEST_HYPERCALL:
guest_hypercall_test();
break;
@@ -1029,6 +1038,94 @@ static void test_event_breakpoint(struct kvm_vm *vm)
disable_vcpu_event(vm, event_id);
}...
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
2020 Jul 22
34
[RFC PATCH v1 00/34] VM introspection - EPT Views and Virtualization Exceptions
This patch series is based on the VM introspection patches
(https://lore.kernel.org/kvm/20200721210922.7646-1-alazar at bitdefender.com/),
extending the introspection API with EPT Views and Virtualization
Exceptions (#VE) support.
The purpose of this series is to get an initial feedback and to see if
we are on the right track, especially because the changes made to add
the EPT views are not small