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Initialize KVM some more

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This patch adds some more KVM initialization code. Doesn't work yet, though.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
This commit is contained in:
Pekka Enberg
2015-06-01 16:39:38 +01:00
committed by Will Deacon
parent 4076b0411d
commit 2b0e334253
1 changed files with 27 additions and 0 deletions
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kvm.c
+27
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@@ -8,6 +8,7 @@
struct kvm {
int fd; /* /dev/kvm */
int vmfd;
int vcpu_fd;
};
static void die(const char *s)
@@ -50,6 +51,7 @@ static struct kvm *kvm__new(void)
static struct kvm *kvm__init(void)
{
struct kvm_userspace_memory_region mem;
struct kvm *self;
int ret;
@@ -70,9 +72,32 @@ static struct kvm *kvm__init(void)
if (!kvm__supports_extension(self, KVM_CAP_USER_MEMORY))
die("KVM_CAP_USER_MEMORY");
mem = (struct kvm_userspace_memory_region) {
.slot = 0,
.guest_phys_addr = 0x0UL,
.memory_size = 64UL * 1024UL * 1024UL,
};
ret = ioctl(self->vmfd, KVM_SET_USER_MEMORY_REGION, &mem, 1);
if (ret < 0)
die("ioctl(KVM_SET_USER_MEMORY_REGION)");
self->vcpu_fd = ioctl(self->vmfd, KVM_CREATE_VCPU, 0);
if (self->vcpu_fd < 0)
die("ioctl(KVM_CREATE_VCPU)");
return self;
}
static void kvm__run(struct kvm *self)
{
int ret;
ret = ioctl(self->vcpu_fd, KVM_RUN, 0);
if (ret < 0)
die("KVM_RUN");
}
int main(int argc, char *argv[])
{
struct cpu *cpu;
@@ -85,5 +110,7 @@ int main(int argc, char *argv[])
cpu__reset(cpu);
kvm__run(kvm);
return 0;
}