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[Qemu-devel] [PATCH v7 06/17] target-i386: Add cpu object access routine
From: |
Don Slutz |
Subject: |
[Qemu-devel] [PATCH v7 06/17] target-i386: Add cpu object access routines for Hypervisor features. |
Date: |
Fri, 12 Oct 2012 15:56:11 -0400 |
Part of "target-i386: Add way to expose VMWare CPUID"
Also known as kvm festures or Hypervisor vendor-neutral interface
identification.
This is just the EAX value for 0x40000001.
QEMU knows this is KVM_CPUID_FEATURES (0x40000001) in some builds.
When exposing VMWare CPUID this needs to be set to zero.
This is based on:
Microsoft Hypervisor CPUID Leaves:
http://msdn.microsoft.com/en-us/library/windows/hardware/ff542428%28v=vs.85%29.aspx
Linux kernel change starts with:
http://fixunix.com/kernel/538707-use-cpuid-communicate-hypervisor.html
Also:
http://lkml.indiana.edu/hypermail/linux/kernel/1205.0/00100.html
VMware documention on CPUIDs (Mechanisms to determine if software is
running in a VMware virtual machine):
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458
Signed-off-by: Don Slutz <address@hidden>
---
target-i386/cpu.c | 26 ++++++++++++++++++++++++++
1 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index a87527c..b335a1e 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1229,6 +1229,29 @@ static void x86_cpuid_set_hv_vendor(Object *obj, const
char *value,
env->cpuid_hv_vendor_set = true;
}
+static void x86_cpuid_get_hv_features(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ X86CPU *cpu = X86_CPU(obj);
+
+ visit_type_uint32(v, &cpu->env.cpuid_hv_features, name, errp);
+}
+
+static void x86_cpuid_set_hv_features(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ X86CPU *cpu = X86_CPU(obj);
+ uint32_t value;
+
+ visit_type_uint32(v, &value, name, errp);
+ if (error_is_set(errp)) {
+ return;
+ }
+
+ cpu->env.cpuid_hv_features = value;
+ cpu->env.cpuid_hv_features_set = true;
+}
+
#if !defined(CONFIG_USER_ONLY)
static void x86_get_hv_spinlocks(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
@@ -2126,6 +2149,9 @@ static void x86_cpu_initfn(Object *obj)
object_property_add_str(obj, "hypervisor-vendor",
x86_cpuid_get_hv_vendor,
x86_cpuid_set_hv_vendor, NULL);
+ object_property_add(obj, "hypervisor-features", "int",
+ x86_cpuid_get_hv_features,
+ x86_cpuid_set_hv_features, NULL, NULL, NULL);
#if !defined(CONFIG_USER_ONLY)
object_property_add(obj, "hv_spinlocks", "int",
x86_get_hv_spinlocks,
--
1.7.1
- [Qemu-devel] [PATCH v7 00/17] target-i386: Add way to expose VMWare CPUID, Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 01/17] target-i386: Add Hypervisor level., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 03/17] target-i386: Add Hypervisor features., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 02/17] target-i386: Add Hypervisor vendor., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 04/17] target-i386: Add cpu object access routines for Hypervisor level., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 05/17] target-i386: Add cpu object access routines for Hypervisor vendor., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 06/17] target-i386: Add cpu object access routines for Hypervisor features.,
Don Slutz <=
- [Qemu-devel] [PATCH v7 07/17] target-i386: Add x86_set_hyperv., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 08/17] target-i386: Use x86_set_hyperv to set hypervisor vendor., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 09/17] target-i386: Use x86_set_hyperv to set hypervisor features., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 10/17] target-i386: Use Hypervisor level in -machine pc, accel=kvm., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 11/17] target-i386: Use Hypervisor vendor in -machine pc, accel=kvm., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 15/17] target-i386: Use Hypervisor level in -machine pc, accel=tcg., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 17/17] target-i386: target-i386: Add VMWare CPUID Timing information in -machine pc, accel=tcg, Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 12/17] target-i386: Use Hypervisor features in -machine pc, accel=kvm., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 13/17] target-i386: Add VMWare CPUID Timing information in -machine pc, accel=kvm., Don Slutz, 2012/10/12
- [Qemu-devel] [PATCH v7 16/17] target-i386: Use Hypervisor vendor in -machine pc, accel=tcg., Don Slutz, 2012/10/12