Merge branch 'google:master' into master

Author: thesword53

README.md

@@ -27,6 +27,13 @@ Use an administrator command console to execute "silent_install.bat" inside
 the driver package. Make sure you see the desired output from the installer:
 STATE: 4 RUNNING
 
+## For Windows 7 users
+According to Microsoft, SHA1 driver signing is deprecated (Read more
+[here](https://docs.microsoft.com/en-us/windows-hardware/drivers/install/deprecation-of-software-publisher-certificates-and-commercial-release-certificates)
+). Version 1.8 (or above) cannot be loaded on Windows 7 by default. Please
+use version 1.7 instead. Users may disable driver signature enforcement in
+order to use version 1.8 or above.
+
 ## Contributing
 If you would like to contribute a patch to the code base, please read
 [these guidelines](CONTRIBUTING.md).

arch/x86/kvm/emulate.c

@@ -836,18 +836,33 @@ static __always_inline int do_insn_fetch_bytes(struct x86_emulate_ctxt *ctxt,
 }
 
 /* Fetch next part of the instruction being emulated. */
-#define __insn_fetch_type(_type)                        \
-static __always_inline int                              \
-  __insn_fetch_##_type(struct x86_emulate_ctxt *ctxt, _type *_x) \
-{                                                       \
-	int rc;                                             \
-	rc = do_insn_fetch_bytes(ctxt, sizeof(_type));      \
-	if (rc == X86EMUL_CONTINUE) {                       \
+#define __insn_fetch_type(_type)                                \
+static __always_inline int                                      \
+  __insn_fetch_##_type(struct x86_emulate_ctxt *ctxt, void *_x, unsigned _x_size) \
+{                                                               \
+	int rc;                                                 \
+	rc = do_insn_fetch_bytes(ctxt, sizeof(_type));          \
+	if (rc == X86EMUL_CONTINUE) {                           \
 		ctxt->_eip += sizeof(_type);                    \
-		*_x = *(_type *) ctxt->fetch.ptr;               \
+		switch (_x_size) {                              \
+		case 1:                                         \
+			*(u8 *)_x = *(_type *) ctxt->fetch.ptr; \
+			break;                                  \
+		case 2:                                         \
+			*(u16 *)_x = *(_type *) ctxt->fetch.ptr;\
+			break;                                  \
+		case 4:                                         \
+			*(u32 *)_x = *(_type *) ctxt->fetch.ptr;\
+			break;                                  \
+		case 8:                                         \
+			*(u64 *)_x = *(_type *) ctxt->fetch.ptr;\
+			break;                                  \
+		default:                                        \
+			BUG();                                  \
+		}                                               \
 		ctxt->fetch.ptr += sizeof(_type);               \
-	}                                                   \
-    return rc;                                          \
+	}                                                       \
+    return rc;                                                  \
 }
 
 __insn_fetch_type(u8)
@@ -859,7 +874,7 @@ __insn_fetch_type(s32)
 __insn_fetch_type(u64)
 __insn_fetch_type(s64)
 
-#define insn_fetch(_type, _ctxt, _data)  __insn_fetch_##_type(_ctxt, &(_type)_data)
+#define insn_fetch(_type, _ctxt, _data)  __insn_fetch_##_type(_ctxt, (void *)&_data, sizeof(_data))
 
 #define insn_fetch_modrmea(_type, _ctxt)                \
 	do {                                                \

arch/x86/kvm/x86.c

@@ -734,6 +734,12 @@ static u32 msrs_to_save[] = {
 
 static unsigned num_msrs_to_save;
 
+static u32 emulated_msrs[] = {
+	MSR_IA32_SMBASE,
+};
+
+static unsigned num_emulated_msrs;
+
 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer)
 {
 	if (efer & efer_reserved_bits)
@@ -1348,7 +1354,7 @@ long kvm_arch_dev_ioctl(struct gvm_device_extension *devext,
 
 		r = STATUS_SUCCESS;
 		n = msr_list->nmsrs;
-		__u32 nmsrs = num_msrs_to_save;
+		__u32 nmsrs = num_msrs_to_save + num_emulated_msrs;
 		r = gvmUpdateReturnBuffer(pIrp, 0, &nmsrs, sizeof(nmsrs));
 		if (r)
 			goto out;
@@ -1360,6 +1366,9 @@ long kvm_arch_dev_ioctl(struct gvm_device_extension *devext,
 
 		r = gvmUpdateReturnBuffer(pIrp, sizeof(nmsrs), &msrs_to_save,
 			num_msrs_to_save * sizeof(u32));
+
+		r = gvmUpdateReturnBuffer(pIrp, sizeof(nmsrs) + sizeof(u32) * num_msrs_to_save,
+			&emulated_msrs, num_emulated_msrs * sizeof(u32));
 		break;
 	}
 	case GVM_GET_SUPPORTED_CPUID:
@@ -2381,7 +2390,6 @@ static void kvm_init_msr_list(void)
 	}
 	num_msrs_to_save = j;
 
-#if 0
 	for (i = j = 0; i < ARRAY_SIZE(emulated_msrs); i++) {
 		switch (emulated_msrs[i]) {
 		case MSR_IA32_SMBASE:
@@ -2397,7 +2405,6 @@ static void kvm_init_msr_list(void)
 		j++;
 	}
 	num_emulated_msrs = j;
-#endif
 }
 
 static int vcpu_mmio_write(struct kvm_vcpu *vcpu, gpa_t addr, int len,
@@ -4721,6 +4728,12 @@ static int vcpu_run(struct kvm_vcpu *vcpu)
 	vcpu->srcu_idx = srcu_read_lock(&kvm->srcu);
 
 	for (;;) {
+		if (test_and_clear_bit(0, (size_t *)&vcpu->run->user_event_pending)) {
+			r = 0;
+			vcpu->run->exit_reason = GVM_EXIT_INTR;
+			break;
+		}
+
 		if (kvm_vcpu_running(vcpu)) {
 			r = vcpu_enter_guest(vcpu);
 		} else {
@@ -4741,11 +4754,6 @@ static int vcpu_run(struct kvm_vcpu *vcpu)
 			++vcpu->stat.request_irq_exits;
 			break;
 		}
-		if (test_and_clear_bit(0, (size_t *)&vcpu->run->user_event_pending)) {
-			r = 0;
-			vcpu->run->exit_reason = GVM_EXIT_INTR;
-			break;
-		}
 	}
 
 	srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx);

gvm/gvm.vcxproj

@@ -104,6 +104,10 @@
     <PreBuildEvent>
       <Command>$(SolutionDir)\..\build\asmgen\x64\$(Configuration)\asmgen.exe &gt; $(ProjectDir)..\__asm.inc</Command>
     </PreBuildEvent>
+    <DriverSign />
+    <DriverSign>
+      <FileDigestAlgorithm>sha256</FileDigestAlgorithm>
+    </DriverSign>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
@@ -117,6 +121,10 @@
     <MASM>
       <IncludePaths>$(ProjectDir)..\;%(IncludePaths)</IncludePaths>
     </MASM>
+    <DriverSign />
+    <DriverSign>
+      <FileDigestAlgorithm>sha256</FileDigestAlgorithm>
+    </DriverSign>
   </ItemDefinitionGroup>
   <ItemGroup>
     <FilesToPackage Include="$(TargetPath)" />

gvm_ver.h

@@ -17,7 +17,7 @@
 #define _XSTR(str) _STR(str)
 
 #define GVM_MAJOR_VERSION 1
-#define GVM_MINOR_VERSION 7
+#define GVM_MINOR_VERSION 8
 
 #define GVM_VERSION ((GVM_MAJOR_VERSION << 16) | GVM_MINOR_VERSION)
 

ntkrutils.c

@@ -145,7 +145,7 @@ void hrtimer_init(struct hrtimer *timer, clockid_t clock_id, enum hrtimer_mode m
 	KeInitializeTimerEx(&timer->ktimer, SynchronizationTimer);
 	timer->base = &timer->base_hack;
 	timer->base->get_time = ktime_get;
-	KeInitializeDpc(&timer->kdpc, (PKDEFERRED_ROUTINE)timer_dpc_fn, timer);
+	KeInitializeThreadedDpc(&timer->kdpc, (PKDEFERRED_ROUTINE)timer_dpc_fn, timer);
 }
 
 int hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode)