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Clean up KVM initialization

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Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
This commit is contained in:
Pekka Enberg
2010-03-22 23:39:40 +02:00
committed by Will Deacon
parent 2da26a59d3
commit 4076b0411d
1 changed files with 42 additions and 20 deletions
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kvm.c
+42 -20
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@@ -10,17 +10,6 @@ struct kvm {
int vmfd;
};
static inline bool kvm__supports_extension(struct kvm *self, unsigned int extension)
{
int ret;
ret = ioctl(self->fd, KVM_CHECK_EXTENSION, extension);
if (ret < 0)
return false;
return ret;
}
static void die(const char *s)
{
perror(s);
@@ -38,27 +27,60 @@ static struct cpu *cpu__new(void)
return calloc(1, sizeof(struct cpu));
}
int main(int argc, char *argv[])
static inline bool kvm__supports_extension(struct kvm *self, unsigned int extension)
{
struct cpu *cpu;
struct kvm kvm;
int ret;
kvm.fd = open("/dev/kvm", O_RDWR);
if (kvm.fd < 0)
ret = ioctl(self->fd, KVM_CHECK_EXTENSION, extension);
if (ret < 0)
return false;
return ret;
}
static struct kvm *kvm__new(void)
{
struct kvm *self = calloc(1, sizeof *self);
if (!self)
die("out of memory");
return self;
}
static struct kvm *kvm__init(void)
{
struct kvm *self;
int ret;
self = kvm__new();
self->fd = open("/dev/kvm", O_RDWR);
if (self->fd < 0)
die("open");
ret = ioctl(kvm.fd, KVM_GET_API_VERSION, 0);
ret = ioctl(self->fd, KVM_GET_API_VERSION, 0);
if (ret != KVM_API_VERSION)
die("ioctl");
kvm.vmfd = ioctl(kvm.fd, KVM_CREATE_VM, 0);
if (kvm.vmfd < 0)
self->vmfd = ioctl(self->fd, KVM_CREATE_VM, 0);
if (self->vmfd < 0)
die("open");
if (!kvm__supports_extension(&kvm, KVM_CAP_USER_MEMORY))
if (!kvm__supports_extension(self, KVM_CAP_USER_MEMORY))
die("KVM_CAP_USER_MEMORY");
return self;
}
int main(int argc, char *argv[])
{
struct cpu *cpu;
struct kvm *kvm;
int ret;
kvm = kvm__init();
cpu = cpu__new();
cpu__reset(cpu);