From: "Adalbert Lazăr" <alazar@bitdefender.com>
To: kvm@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Mihai Donțu" <mdontu@bitdefender.com>,
"Nicușor Cîțu" <ncitu@bitdefender.com>,
"Adalbert Lazăr" <alazar@bitdefender.com>
Subject: [PATCH v8 67/81] KVM: introspection: add KVMI_EVENT_XSETBV
Date: Mon, 30 Mar 2020 13:12:54 +0300 [thread overview]
Message-ID: <20200330101308.21702-68-alazar@bitdefender.com> (raw)
In-Reply-To: <20200330101308.21702-1-alazar@bitdefender.com>
From: Mihai Donțu <mdontu@bitdefender.com>
This event is sent when the extended control register XCR0 is going to
be changed.
Signed-off-by: Mihai Donțu <mdontu@bitdefender.com>
Co-developed-by: Nicușor Cîțu <ncitu@bitdefender.com>
Signed-off-by: Nicușor Cîțu <ncitu@bitdefender.com>
Signed-off-by: Adalbert Lazăr <alazar@bitdefender.com>
---
Documentation/virt/kvm/kvmi.rst | 25 ++++++
arch/x86/include/asm/kvmi_host.h | 2 +
arch/x86/kvm/kvmi.c | 39 +++++++++
arch/x86/kvm/x86.c | 6 ++
include/uapi/linux/kvmi.h | 1 +
.../testing/selftests/kvm/x86_64/kvmi_test.c | 83 +++++++++++++++++++
virt/kvm/introspection/kvmi.c | 1 +
7 files changed, 157 insertions(+)
diff --git a/Documentation/virt/kvm/kvmi.rst b/Documentation/virt/kvm/kvmi.rst
index 1c5e256975fe..06ed05f4791b 100644
--- a/Documentation/virt/kvm/kvmi.rst
+++ b/Documentation/virt/kvm/kvmi.rst
@@ -549,6 +549,7 @@ the following events::
KVMI_EVENT_BREAKPOINT
KVMI_EVENT_CR
KVMI_EVENT_HYPERCALL
+ KVMI_EVENT_XSETBV
When an event is enabled, the introspection tool is notified and
must reply with: continue, retry, crash, etc. (see **Events** below).
@@ -1019,3 +1020,27 @@ other vCPU introspection event.
(``error_code``) and CR2 are sent to the introspection tool,
which should check if its exception has been injected or overridden.
+7. KVMI_EVENT_XSETBV
+--------------------
+
+:Architectures: x86
+:Versions: >= 1
+:Actions: CONTINUE, CRASH
+:Parameters:
+
+::
+
+ struct kvmi_event;
+
+:Returns:
+
+::
+
+ struct kvmi_vcpu_hdr;
+ struct kvmi_event_reply;
+
+This event is sent when the extended control register XCR0 is going
+to be changed and the introspection has been enabled for this event
+(see *KVMI_VCPU_CONTROL_EVENTS*).
+
+``kvmi_event`` is sent to the introspection tool.
diff --git a/arch/x86/include/asm/kvmi_host.h b/arch/x86/include/asm/kvmi_host.h
index 24f3f8fdee62..b3fa950362db 100644
--- a/arch/x86/include/asm/kvmi_host.h
+++ b/arch/x86/include/asm/kvmi_host.h
@@ -30,6 +30,7 @@ bool kvmi_cr_event(struct kvm_vcpu *vcpu, unsigned int cr,
unsigned long old_value, unsigned long *new_value);
bool kvmi_cr3_intercepted(struct kvm_vcpu *vcpu);
bool kvmi_monitor_cr3w_intercept(struct kvm_vcpu *vcpu, bool enable);
+void kvmi_xsetbv_event(struct kvm_vcpu *vcpu);
#else /* CONFIG_KVM_INTROSPECTION */
@@ -41,6 +42,7 @@ static inline bool kvmi_cr_event(struct kvm_vcpu *vcpu, unsigned int cr,
static inline bool kvmi_cr3_intercepted(struct kvm_vcpu *vcpu) { return false; }
static inline bool kvmi_monitor_cr3w_intercept(struct kvm_vcpu *vcpu,
bool enable) { return false; }
+static inline void kvmi_xsetbv_event(struct kvm_vcpu *vcpu) { }
#endif /* CONFIG_KVM_INTROSPECTION */
diff --git a/arch/x86/kvm/kvmi.c b/arch/x86/kvm/kvmi.c
index 9f8ef8a1a306..f947f18e9d72 100644
--- a/arch/x86/kvm/kvmi.c
+++ b/arch/x86/kvm/kvmi.c
@@ -662,3 +662,42 @@ void kvmi_arch_trap_event(struct kvm_vcpu *vcpu)
kvmi_handle_common_event_actions(vcpu->kvm, action, "TRAP");
}
}
+
+static u32 kvmi_send_xsetbv(struct kvm_vcpu *vcpu)
+{
+ int err, action;
+
+ err = kvmi_send_event(vcpu, KVMI_EVENT_XSETBV, NULL, 0,
+ NULL, 0, &action);
+ if (err)
+ return KVMI_EVENT_ACTION_CONTINUE;
+
+ return action;
+}
+
+static void __kvmi_xsetbv_event(struct kvm_vcpu *vcpu)
+{
+ u32 action;
+
+ action = kvmi_send_xsetbv(vcpu);
+ switch (action) {
+ case KVMI_EVENT_ACTION_CONTINUE:
+ break;
+ default:
+ kvmi_handle_common_event_actions(vcpu->kvm, action, "XSETBV");
+ }
+}
+
+void kvmi_xsetbv_event(struct kvm_vcpu *vcpu)
+{
+ struct kvm_introspection *kvmi;
+
+ kvmi = kvmi_get(vcpu->kvm);
+ if (!kvmi)
+ return;
+
+ if (is_event_enabled(vcpu, KVMI_EVENT_XSETBV))
+ __kvmi_xsetbv_event(vcpu);
+
+ kvmi_put(vcpu->kvm);
+}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0e3704bed6c4..ab0ad3b6ebc2 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -865,6 +865,12 @@ static int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
}
vcpu->arch.xcr0 = xcr0;
+#ifdef CONFIG_KVM_INTROSPECTION
+ if (index == 0 && xcr0 != old_xcr0)
+ kvmi_xsetbv_event(vcpu);
+#endif /* CONFIG_KVM_INTROSPECTION */
+
+
if ((xcr0 ^ old_xcr0) & XFEATURE_MASK_EXTEND)
kvm_update_cpuid(vcpu);
return 0;
diff --git a/include/uapi/linux/kvmi.h b/include/uapi/linux/kvmi.h
index d33e8dae0084..ecf140ba3cab 100644
--- a/include/uapi/linux/kvmi.h
+++ b/include/uapi/linux/kvmi.h
@@ -46,6 +46,7 @@ enum {
KVMI_EVENT_BREAKPOINT = 3,
KVMI_EVENT_CR = 4,
KVMI_EVENT_TRAP = 5,
+ KVMI_EVENT_XSETBV = 6,
KVMI_NUM_EVENTS
};
diff --git a/tools/testing/selftests/kvm/x86_64/kvmi_test.c b/tools/testing/selftests/kvm/x86_64/kvmi_test.c
index 66766d112006..3a45834e9235 100644
--- a/tools/testing/selftests/kvm/x86_64/kvmi_test.c
+++ b/tools/testing/selftests/kvm/x86_64/kvmi_test.c
@@ -22,6 +22,8 @@
#define VCPU_ID 5
+#define X86_FEATURE_XSAVE (1<<26)
+
static int socket_pair[2];
#define Kvm_socket socket_pair[0]
#define Userspace_socket socket_pair[1]
@@ -54,6 +56,7 @@ enum {
GUEST_TEST_BP,
GUEST_TEST_CR,
GUEST_TEST_HYPERCALL,
+ GUEST_TEST_XSETBV,
};
#define GUEST_REQUEST_TEST() GUEST_SYNC(0)
@@ -85,6 +88,45 @@ static void guest_hypercall_test(void)
asm volatile(".byte 0x0f,0x01,0xc1");
}
+/* from fpu/internal.h */
+static u64 xgetbv(u32 index)
+{
+ u32 eax, edx;
+
+ asm volatile(".byte 0x0f,0x01,0xd0" /* xgetbv */
+ : "=a" (eax), "=d" (edx)
+ : "c" (index));
+ return eax + ((u64)edx << 32);
+}
+
+/* from fpu/internal.h */
+static void xsetbv(u32 index, u64 value)
+{
+ u32 eax = value;
+ u32 edx = value >> 32;
+
+ asm volatile(".byte 0x0f,0x01,0xd1" /* xsetbv */
+ : : "a" (eax), "d" (edx), "c" (index));
+}
+
+static void guest_xsetbv_test(void)
+{
+ 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) {
@@ -100,6 +142,9 @@ 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();
}
@@ -1243,6 +1288,43 @@ static void test_cmd_vm_get_max_gfn(void)
DEBUG("max_gfn: 0x%llx\n", rpl.gfn);
}
+static void test_event_xsetbv(struct kvm_vm *vm)
+{
+ struct vcpu_worker_data data = {
+ .vm = vm,
+ .vcpu_id = VCPU_ID,
+ .test_id = GUEST_TEST_XSETBV,
+ };
+ __u16 event_id = KVMI_EVENT_XSETBV;
+ struct kvm_cpuid_entry2 *entry;
+ struct vcpu_reply rpl = {};
+ struct kvmi_msg_hdr hdr;
+ pthread_t vcpu_thread;
+ struct kvmi_event ev;
+
+ entry = kvm_get_supported_cpuid_entry(1);
+ if (!(entry->ecx & X86_FEATURE_XSAVE)) {
+ DEBUG("XSAVE is not supported, ecx 0x%x, skipping xsetbv test\n",
+ entry->ecx);
+ return;
+ }
+
+ enable_vcpu_event(vm, event_id);
+
+ vcpu_thread = start_vcpu_worker(&data);
+
+ receive_event(&hdr, &ev, sizeof(ev), event_id);
+
+ DEBUG("XSETBV event, rip 0x%llx\n", ev.arch.regs.rip);
+
+ reply_to_event(&hdr, &ev, KVMI_EVENT_ACTION_CONTINUE,
+ &rpl, sizeof(rpl));
+
+ stop_vcpu_worker(vcpu_thread, &data);
+
+ disable_vcpu_event(vm, event_id);
+}
+
static void test_introspection(struct kvm_vm *vm)
{
srandom(time(0));
@@ -1268,6 +1350,7 @@ static void test_introspection(struct kvm_vm *vm)
test_cmd_vcpu_control_cr(vm);
test_cmd_vcpu_inject_exception(vm);
test_cmd_vm_get_max_gfn();
+ test_event_xsetbv(vm);
unhook_introspection(vm);
}
diff --git a/virt/kvm/introspection/kvmi.c b/virt/kvm/introspection/kvmi.c
index 0f2cec7e9c90..d358686fce76 100644
--- a/virt/kvm/introspection/kvmi.c
+++ b/virt/kvm/introspection/kvmi.c
@@ -83,6 +83,7 @@ static void setup_known_events(void)
set_bit(KVMI_EVENT_HYPERCALL, Kvmi_known_vcpu_events);
set_bit(KVMI_EVENT_PAUSE_VCPU, Kvmi_known_vcpu_events);
set_bit(KVMI_EVENT_TRAP, Kvmi_known_vcpu_events);
+ set_bit(KVMI_EVENT_XSETBV, Kvmi_known_vcpu_events);
bitmap_or(Kvmi_known_events, Kvmi_known_vm_events,
Kvmi_known_vcpu_events, KVMI_NUM_EVENTS);
next prev parent reply other threads:[~2020-03-30 10:22 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-30 10:11 [PATCH v8 00/81] VM introspection Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 01/81] sched/swait: add swait_event_killable_exclusive() Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 02/81] export kill_pid_info() Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 03/81] KVM: add new error codes for VM introspection Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 04/81] KVM: add kvm_vcpu_kick_and_wait() Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 05/81] KVM: add kvm_get_max_gfn() Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 06/81] KVM: doc: fix the hypercall numbering Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 07/81] KVM: x86: add kvm_arch_vcpu_get_regs() and kvm_arch_vcpu_get_sregs() Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 08/81] KVM: x86: add kvm_arch_vcpu_set_regs() Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 09/81] KVM: x86: avoid injecting #PF when emulate the VMCALL instruction Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 10/81] KVM: x86: add .bp_intercepted() to struct kvm_x86_ops Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 11/81] KVM: x86: add .control_cr3_intercept() " Adalbert Lazăr
2020-03-30 10:11 ` [PATCH v8 12/81] KVM: x86: add .cr3_write_intercepted() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 13/81] KVM: x86: add .desc_ctrl_supported() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 14/81] KVM: svm: add support for descriptor-table exits Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 15/81] KVM: x86: add .control_desc_intercept() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 16/81] KVM: x86: add .desc_intercepted() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 17/81] KVM: x86: export .msr_write_intercepted() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 18/81] KVM: x86: use MSR_TYPE_R, MSR_TYPE_W and MSR_TYPE_RW with AMD code too Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 19/81] KVM: svm: pass struct kvm_vcpu to set_msr_interception() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 20/81] KVM: vmx: pass struct kvm_vcpu to the intercept msr related functions Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 21/81] KVM: x86: add .control_msr_intercept() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 22/81] KVM: x86: vmx: use a symbolic constant when checking the exit qualifications Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 23/81] KVM: x86: save the error code during EPT/NPF exits handling Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 24/81] KVM: x86: add .fault_gla() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 25/81] KVM: x86: add .spt_fault() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 26/81] KVM: x86: add .gpt_translation_fault() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 27/81] KVM: x86: add .control_singlestep() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 28/81] KVM: x86: export kvm_arch_vcpu_set_guest_debug() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 29/81] KVM: x86: extend kvm_mmu_gva_to_gpa_system() with the 'access' parameter Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 30/81] KVM: x86: export kvm_inject_pending_exception() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 31/81] KVM: x86: export kvm_vcpu_ioctl_x86_get_xsave() Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 32/81] KVM: x86: page track: provide all page tracking hooks with the guest virtual address Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 33/81] KVM: x86: page track: add track_create_slot() callback Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 34/81] KVM: x86: page_track: add support for preread, prewrite and preexec Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 35/81] KVM: x86: wire in the preread/prewrite/preexec page trackers Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 36/81] KVM: x86: intercept the write access on sidt and other emulated instructions Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 37/81] KVM: x86: disable gpa_available optimization for fetch and page-walk NPF/EPT violations Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 38/81] KVM: introduce VM introspection Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 39/81] KVM: introspection: add hook/unhook ioctls Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 40/81] KVM: introspection: add permission access ioctls Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 41/81] KVM: introspection: add the read/dispatch message function Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 42/81] KVM: introspection: add KVMI_GET_VERSION Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 43/81] KVM: introspection: add KVMI_VM_CHECK_COMMAND and KVMI_VM_CHECK_EVENT Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 44/81] KVM: introspection: add KVMI_VM_GET_INFO Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 45/81] KVM: introspection: add KVMI_EVENT_UNHOOK Adalbert Lazăr
2020-03-31 1:16 ` kbuild test robot
2020-03-30 10:12 ` [PATCH v8 46/81] KVM: introspection: add KVMI_VM_CONTROL_EVENTS Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 47/81] KVM: introspection: add KVMI_VM_READ_PHYSICAL/KVMI_VM_WRITE_PHYSICAL Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 48/81] KVM: introspection: add vCPU related data Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 49/81] KVM: introspection: add a jobs list to every introspected vCPU Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 50/81] KVM: introspection: handle vCPU introspection requests Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 51/81] KVM: introspection: handle vCPU commands Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 52/81] KVM: introspection: add KVMI_VCPU_GET_INFO Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 53/81] KVM: introspection: add KVMI_VCPU_PAUSE Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 54/81] KVM: introspection: add KVMI_EVENT_PAUSE_VCPU Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 55/81] KVM: introspection: add crash action handling on event reply Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 56/81] KVM: introspection: add KVMI_VCPU_CONTROL_EVENTS Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 57/81] KVM: introspection: add KVMI_VCPU_GET_REGISTERS Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 58/81] KVM: introspection: add KVMI_VCPU_SET_REGISTERS Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 59/81] KVM: introspection: add KVMI_VCPU_GET_CPUID Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 60/81] KVM: introspection: add KVMI_EVENT_HYPERCALL Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 61/81] KVM: introspection: add KVMI_EVENT_BREAKPOINT Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 62/81] KVM: introspection: restore the state of #BP interception on unhook Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 63/81] KVM: introspection: add KVMI_VCPU_CONTROL_CR and KVMI_EVENT_CR Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 64/81] KVM: introspection: restore the state of CR3 interception on unhook Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 65/81] KVM: introspection: add KVMI_VCPU_INJECT_EXCEPTION + KVMI_EVENT_TRAP Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 66/81] KVM: introspection: add KVMI_VM_GET_MAX_GFN Adalbert Lazăr
2020-03-30 10:12 ` Adalbert Lazăr [this message]
2020-03-30 10:12 ` [PATCH v8 68/81] KVM: introspection: add KVMI_VCPU_GET_XSAVE Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 69/81] KVM: introspection: add KVMI_VCPU_GET_MTRR_TYPE Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 70/81] KVM: introspection: add KVMI_EVENT_DESCRIPTOR Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 71/81] KVM: introspection: restore the state of descriptor-table register interception on unhook Adalbert Lazăr
2020-03-30 10:12 ` [PATCH v8 72/81] KVM: introspection: add KVMI_VCPU_CONTROL_MSR and KVMI_EVENT_MSR Adalbert Lazăr
2020-03-30 10:13 ` [PATCH v8 73/81] KVM: introspection: restore the state of MSR interception on unhook Adalbert Lazăr
2020-03-30 10:13 ` [PATCH v8 74/81] KVM: introspection: add KVMI_VM_SET_PAGE_ACCESS Adalbert Lazăr
2020-03-30 10:13 ` [PATCH v8 75/81] KVM: introspection: add KVMI_EVENT_PF Adalbert Lazăr
2020-03-30 10:13 ` [PATCH v8 76/81] KVM: introspection: extend KVMI_GET_VERSION with struct kvmi_features Adalbert Lazăr
2020-03-30 10:13 ` [PATCH v8 77/81] KVM: introspection: add KVMI_VCPU_CONTROL_SINGLESTEP Adalbert Lazăr
2020-03-30 10:13 ` [PATCH v8 78/81] KVM: introspection: add KVMI_EVENT_SINGLESTEP Adalbert Lazăr
2020-03-30 10:13 ` [PATCH v8 79/81] KVM: introspection: add KVMI_VCPU_TRANSLATE_GVA Adalbert Lazăr
2020-03-30 10:13 ` [PATCH v8 80/81] KVM: introspection: emulate a guest page table walk on SPT violations due to A/D bit updates Adalbert Lazăr
2020-03-31 5:32 ` kbuild test robot
2020-03-30 10:13 ` [PATCH v8 81/81] KVM: x86: call the page tracking code on emulation failure Adalbert Lazăr
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