[Qemu-devel] [PATCH v6 11/16] target-i386: Add some known names to Hypervisor vendor.

[Don Slutz <Don@CloudSwitch.com>]

Signed-off-by: Don Slutz <Don@CloudSwitch.com>
---
 target-i386/cpu.c |   57 +++++++++++++++++++++++++++++++++++++++++++++++++++-
 target-i386/cpu.h |   19 +++++++++++++++++
 2 files changed, 74 insertions(+), 2 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index a929b64..9ab29a7 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1207,6 +1207,24 @@ static char *x86_cpuid_get_hv_vendor(Object *obj, Error **errp)
     }
     value[CPUID_VENDOR_SZ] = '\0';
 
+    /* Convert known names */
+    if (!strcmp(value, CPUID_HV_VENDOR_HYPERV) &&
+               env->cpuid_hv_level == CPUID_HV_LEVEL_HYPERV) {
+        pstrcpy(value, sizeof(value), "hyperv");
+    } else if (!strcmp(value, CPUID_HV_VENDOR_VMWARE)) {
+        if (env->cpuid_hv_level == CPUID_HV_LEVEL_VMWARE_4) {
+            pstrcpy(value, sizeof(value), "vmware4");
+        } else if (env->cpuid_hv_level == CPUID_HV_LEVEL_VMWARE_3) {
+            pstrcpy(value, sizeof(value), "vmware3");
+        }
+    } else if (!strcmp(value, CPUID_HV_VENDOR_XEN) &&
+               env->cpuid_hv_level == CPUID_HV_LEVEL_XEN) {
+        pstrcpy(value, sizeof(value), "xen");
+    } else if (!strcmp(value, CPUID_HV_VENDOR_KVM) &&
+               (env->cpuid_hv_level == 0 ||
+                env->cpuid_hv_level == CPUID_HV_LEVEL_KVM)) {
+        pstrcpy(value, sizeof(value), "kvm");
+    }
     return value;
 }
 
@@ -1220,7 +1238,35 @@ static void x86_cpuid_set_hv_vendor(Object *obj, const char *value,
 
     memset(adj_value, 0, sizeof(adj_value));
 
-    pstrcpy(adj_value, sizeof(adj_value), value);
+    /* Convert known names */
+    if (!strcmp(value, "hyperv")) {
+        if (!env->cpuid_hv_level_set) {
+            env->cpuid_hv_level = CPUID_HV_LEVEL_HYPERV;
+        }
+        pstrcpy(adj_value, sizeof(adj_value), CPUID_HV_VENDOR_HYPERV);
+    } else if (!strcmp(value, "vmware") || !strcmp(value, "vmware4")) {
+        if (!env->cpuid_hv_level_set) {
+            env->cpuid_hv_level = CPUID_HV_LEVEL_VMWARE_4;
+        }
+        pstrcpy(adj_value, sizeof(adj_value), CPUID_HV_VENDOR_VMWARE);
+    } else if (!strcmp(value, "vmware3")) {
+        if (!env->cpuid_hv_level_set) {
+            env->cpuid_hv_level = CPUID_HV_LEVEL_VMWARE_3;
+        }
+        pstrcpy(adj_value, sizeof(adj_value), CPUID_HV_VENDOR_VMWARE);
+    } else if (!strcmp(value, "xen")) {
+        if (!env->cpuid_hv_level_set) {
+            env->cpuid_hv_level = CPUID_HV_LEVEL_XEN;
+        }
+        pstrcpy(adj_value, sizeof(adj_value), CPUID_HV_VENDOR_XEN);
+    } else if (!strcmp(value, "kvm")) {
+        if (!env->cpuid_hv_level_set) {
+            env->cpuid_hv_level = CPUID_HV_LEVEL_KVM;
+        }
+        pstrcpy(adj_value, sizeof(adj_value), CPUID_HV_VENDOR_KVM);
+    } else {
+        pstrcpy(adj_value, sizeof(adj_value), value);
+    }
 
     env->cpuid_hv_vendor1 = 0;
     env->cpuid_hv_vendor2 = 0;
@@ -1700,7 +1746,14 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
 
             /* Handle Hypervisor CPUIDs */
             if (real_level < 0x40000000) {
-                real_level = 0x40000000;
+                if (env->cpuid_hv_vendor1 == CPUID_HV_VENDOR_KVM_1 &&
+                    env->cpuid_hv_vendor2 == CPUID_HV_VENDOR_KVM_2 &&
+                    env->cpuid_hv_vendor3 == CPUID_HV_VENDOR_KVM_3 &&
+                    real_level == 0) {
+                    real_level = CPUID_HV_LEVEL_KVM;
+                } else {
+                    real_level = 0x40000000;
+                }
             }
             if (index > real_level) {
                 index = real_level;
diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index eb6aa4a..ebb3498 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -490,8 +490,27 @@
 
 #define CPUID_HV_VENDOR_HYPERV "Microsoft Hv"
 
+#define CPUID_HV_VENDOR_VMWARE_1 0x61774d56 /* "VMwa" */
+#define CPUID_HV_VENDOR_VMWARE_2 0x4d566572 /* "reVM" */
+#define CPUID_HV_VENDOR_VMWARE_3 0x65726177 /* "ware" */
+#define CPUID_HV_VENDOR_VMWARE "VMwareVMware"
+
+#define CPUID_HV_VENDOR_XEN "XenVMMXenVMM"
+
+#define CPUID_HV_VENDOR_KVM_1 0x4b4d564b /* "KVMK" */
+#define CPUID_HV_VENDOR_KVM_2 0x564b4d56 /* "VMKV" */
+#define CPUID_HV_VENDOR_KVM_3 0x0000004d /* "M\0\0\0" */
+#define CPUID_HV_VENDOR_KVM "KVMKVMKVM"
+
 #define CPUID_HV_LEVEL_HYPERV  0x40000005
 
+#define CPUID_HV_LEVEL_VMWARE_3 0x40000002
+#define CPUID_HV_LEVEL_VMWARE_4 0x40000010
+
+#define CPUID_HV_LEVEL_XEN  0x40000002
+
+#define CPUID_HV_LEVEL_KVM  0x40000001
+
 #define CPUID_MWAIT_IBE     (1 << 1) /* Interrupts can exit capability */
 #define CPUID_MWAIT_EMX     (1 << 0) /* enumeration supported */
 
-- 
1.7.1