[PATCH 2/4] target/i386: nvmm, whpx: add accel/CPU class that sets host vendor

[Paolo Bonzini <pbonzini@redhat.com>]

NVMM and WHPX are virtualizers, and therefore they need to use
(at least by default) the host vendor for the guest CPUID.
Add a cpu_instance_init implementation to these accelerators.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 target/i386/cpu.c           |  8 +++++++-
 target/i386/nvmm/nvmm-all.c | 23 +++++++++++++++++++++++
 target/i386/whpx/whpx-all.c | 23 +++++++++++++++++++++++
 3 files changed, 53 insertions(+), 1 deletion(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 624cebc3ff7..69bdffbfe46 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -43,6 +43,7 @@
 #include "hw/boards.h"
 #include "hw/i386/sgx-epc.h"
 #endif
+#include "system/qtest.h"
 #include "tcg/tcg-cpu.h"
 
 #include "disas/capstone.h"
@@ -1943,7 +1944,7 @@ uint32_t xsave_area_size(uint64_t mask, bool compacted)
 
 static inline bool accel_uses_host_cpuid(void)
 {
-    return kvm_enabled() || hvf_enabled();
+    return !tcg_enabled() && !qtest_enabled();
 }
 
 static inline uint64_t x86_cpu_xsave_xcr0_components(X86CPU *cpu)
diff --git a/target/i386/nvmm/nvmm-all.c b/target/i386/nvmm/nvmm-all.c
index b4a4d50e860..69125230abb 100644
--- a/target/i386/nvmm/nvmm-all.c
+++ b/target/i386/nvmm/nvmm-all.c
@@ -1207,10 +1207,33 @@ static const TypeInfo nvmm_accel_type = {
     .class_init = nvmm_accel_class_init,
 };
 
+static void nvmm_cpu_instance_init(CPUState *cs)
+{
+    X86CPU *cpu = X86_CPU(cs);
+
+    host_cpu_instance_init(cpu);
+}
+
+static void nvmm_cpu_accel_class_init(ObjectClass *oc, const void *data)
+{
+    AccelCPUClass *acc = ACCEL_CPU_CLASS(oc);
+
+    acc->cpu_instance_init = nvmm_cpu_instance_init;
+}
+
+static const TypeInfo nvmm_cpu_accel_type = {
+    .name = ACCEL_CPU_NAME("nvmm"),
+
+    .parent = TYPE_ACCEL_CPU,
+    .class_init = nvmm_cpu_accel_class_init,
+    .abstract = true,
+};
+
 static void
 nvmm_type_init(void)
 {
     type_register_static(&nvmm_accel_type);
+    type_register_static(&nvmm_cpu_accel_type);
 }
 
 type_init(nvmm_type_init);
diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c
index faf56e19722..b380459d6fe 100644
--- a/target/i386/whpx/whpx-all.c
+++ b/target/i386/whpx/whpx-all.c
@@ -2500,6 +2500,28 @@ static void whpx_set_kernel_irqchip(Object *obj, Visitor *v,
     }
 }
 
+static void whpx_cpu_instance_init(CPUState *cs)
+{
+    X86CPU *cpu = X86_CPU(cs);
+
+    host_cpu_instance_init(cpu);
+}
+
+static void whpx_cpu_accel_class_init(ObjectClass *oc, const void *data)
+{
+    AccelCPUClass *acc = ACCEL_CPU_CLASS(oc);
+
+    acc->cpu_instance_init = whpx_cpu_instance_init;
+}
+
+static const TypeInfo whpx_cpu_accel_type = {
+    .name = ACCEL_CPU_NAME("whpx"),
+
+    .parent = TYPE_ACCEL_CPU,
+    .class_init = whpx_cpu_accel_class_init,
+    .abstract = true,
+};
+
 /*
  * Partition support
  */
@@ -2726,6 +2748,7 @@ static const TypeInfo whpx_accel_type = {
 static void whpx_type_init(void)
 {
     type_register_static(&whpx_accel_type);
+    type_register_static(&whpx_cpu_accel_type);
 }
 
 bool init_whp_dispatch(void)
-- 
2.50.0