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[Qemu-devel] [PATCH 2/2] hook into vcpu creation
From: |
Glauber Costa |
Subject: |
[Qemu-devel] [PATCH 2/2] hook into vcpu creation |
Date: |
Tue, 30 Dec 2008 09:52:06 -0500 |
Allow kvm to override vcpu creation. We need to grab
a minimal amount of code that is shared, but the big
part is highly kvm/tcg specific.
Signed-off-by: Glauber Costa <address@hidden>
---
kvm-all.c | 18 ++++++++++++++----
kvm.h | 2 +-
target-i386/helper.c | 12 +++++++++---
target-i386/kvm.c | 5 +++++
4 files changed, 29 insertions(+), 8 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index a279d6c..ebad664 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -104,12 +104,19 @@ static int kvm_set_user_memory_region(KVMState *s,
KVMSlot *slot)
}
-int kvm_init_vcpu(CPUState *env)
+CPUState *kvm_init_vcpu(const char *cpu_model)
{
KVMState *s = kvm_state;
long mmap_size;
int ret;
+ CPUState *env = qemu_mallocz(sizeof(*env));
+ if (!env)
+ return NULL;
+
+ cpu_exec_init(env);
+ env->cpu_model_str = cpu_model;
+
dprintf("kvm_init_vcpu\n");
ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, env->cpu_index);
@@ -135,10 +142,13 @@ int kvm_init_vcpu(CPUState *env)
goto err;
}
- ret = kvm_arch_init_vcpu(env);
-
+ if (kvm_arch_init_vcpu(env))
+ goto err;
+
+ return env;
err:
- return ret;
+ qemu_free(env);
+ return NULL;
}
int kvm_sync_vcpus(void)
diff --git a/kvm.h b/kvm.h
index efce145..4ea679f 100644
--- a/kvm.h
+++ b/kvm.h
@@ -30,7 +30,7 @@ struct kvm_run;
int kvm_init(int smp_cpus);
-int kvm_init_vcpu(CPUState *env);
+CPUState *kvm_init_vcpu(const char *cpu_model);
int kvm_sync_vcpus(void);
int kvm_cpu_exec(CPUState *env);
diff --git a/target-i386/helper.c b/target-i386/helper.c
index 1389a0a..d8bed46 100644
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -1607,7 +1607,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index,
}
}
-CPUX86State *cpu_x86_init(const char *cpu_model)
+CPUX86State *cpu_x86_default_init(const char *cpu_model)
{
CPUX86State *env;
static int inited;
@@ -1635,7 +1635,13 @@ CPUX86State *cpu_x86_init(const char *cpu_model)
#ifdef USE_KQEMU
kqemu_init(env);
#endif
- if (kvm_enabled())
- kvm_init_vcpu(env);
return env;
}
+
+CPUX86State *cpu_x86_init(const char *cpu_model)
+{
+ if (kvm_enabled())
+ return kvm_init_vcpu(cpu_model);
+ else
+ return cpu_x86_default_init(cpu_model);
+}
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 2412ae4..08a4416 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -44,6 +44,11 @@ int kvm_arch_init_vcpu(CPUState *env)
cpuid_i = 0;
+ if (cpu_x86_register(env) < 0) {
+ cpu_x86_close(env);
+ return -1;
+ }
+
cpu_x86_cpuid(env, 0, &eax, &ebx, &ecx, &edx);
limit = eax;
--
1.5.6.5