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KVM: Portability: Add two hooks to handle kvm_create and destroy vm

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Add two arch hooks to handle kvm_create_vm and kvm destroy_vm. Now, just
put io_bus init and destory in common.

Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Zhang Xiantao 2007-11-18 18:43:45 +08:00 committed by Avi Kivity
parent a16b043cc9
commit d19a9cd275
3 changed files with 57 additions and 36 deletions
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4
drivers/kvm/kvm.h
View File

@ -674,6 +674,10 @@ int kvm_arch_hardware_setup(void);
void kvm_arch_hardware_unsetup(void);
void kvm_arch_check_processor_compat(void *rtn);
void kvm_free_physmem(struct kvm *kvm);
struct kvm *kvm_arch_create_vm(void);
void kvm_arch_destroy_vm(struct kvm *kvm);
static inline void kvm_guest_enter(void)
{

42
drivers/kvm/kvm_main.c
View File

@ -156,18 +156,18 @@ EXPORT_SYMBOL_GPL(kvm_vcpu_uninit);
static struct kvm *kvm_create_vm(void)
{
struct kvm *kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL);
struct kvm *kvm = kvm_arch_create_vm();
if (!kvm)
return ERR_PTR(-ENOMEM);
if (IS_ERR(kvm))
goto out;
kvm_io_bus_init(&kvm->pio_bus);
mutex_init(&kvm->lock);
INIT_LIST_HEAD(&kvm->active_mmu_pages);
kvm_io_bus_init(&kvm->mmio_bus);
spin_lock(&kvm_lock);
list_add(&kvm->vm_list, &vm_list);
spin_unlock(&kvm_lock);
out:
return kvm;
}
@ -188,7 +188,7 @@ static void kvm_free_physmem_slot(struct kvm_memory_slot *free,
free->rmap = NULL;
}
static void kvm_free_physmem(struct kvm *kvm)
void kvm_free_physmem(struct kvm *kvm)
{
int i;
@ -196,32 +196,6 @@ static void kvm_free_physmem(struct kvm *kvm)
kvm_free_physmem_slot(&kvm->memslots[i], NULL);
}
static void kvm_unload_vcpu_mmu(struct kvm_vcpu *vcpu)
{
vcpu_load(vcpu);
kvm_mmu_unload(vcpu);
vcpu_put(vcpu);
}
static void kvm_free_vcpus(struct kvm *kvm)
{
unsigned int i;
/*
* Unpin any mmu pages first.
*/
for (i = 0; i < KVM_MAX_VCPUS; ++i)
if (kvm->vcpus[i])
kvm_unload_vcpu_mmu(kvm->vcpus[i]);
for (i = 0; i < KVM_MAX_VCPUS; ++i) {
if (kvm->vcpus[i]) {
kvm_arch_vcpu_free(kvm->vcpus[i]);
kvm->vcpus[i] = NULL;
}
}
}
static void kvm_destroy_vm(struct kvm *kvm)
{
spin_lock(&kvm_lock);
@ -229,11 +203,7 @@ static void kvm_destroy_vm(struct kvm *kvm)
spin_unlock(&kvm_lock);
kvm_io_bus_destroy(&kvm->pio_bus);
kvm_io_bus_destroy(&kvm->mmio_bus);
kfree(kvm->vpic);
kfree(kvm->vioapic);
kvm_free_vcpus(kvm);
kvm_free_physmem(kvm);
kfree(kvm);
kvm_arch_destroy_vm(kvm);
}
static int kvm_vm_release(struct inode *inode, struct file *filp)

47
drivers/kvm/x86.c
View File

@ -2543,3 +2543,50 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
kvm_mmu_destroy(vcpu);
free_page((unsigned long)vcpu->pio_data);
}
struct kvm *kvm_arch_create_vm(void)
{
struct kvm *kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL);
if (!kvm)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&kvm->active_mmu_pages);
return kvm;
}
static void kvm_unload_vcpu_mmu(struct kvm_vcpu *vcpu)
{
vcpu_load(vcpu);
kvm_mmu_unload(vcpu);
vcpu_put(vcpu);
}
static void kvm_free_vcpus(struct kvm *kvm)
{
unsigned int i;
/*
* Unpin any mmu pages first.
*/
for (i = 0; i < KVM_MAX_VCPUS; ++i)
if (kvm->vcpus[i])
kvm_unload_vcpu_mmu(kvm->vcpus[i]);
for (i = 0; i < KVM_MAX_VCPUS; ++i) {
if (kvm->vcpus[i]) {
kvm_arch_vcpu_free(kvm->vcpus[i]);
kvm->vcpus[i] = NULL;
}
}
}
void kvm_arch_destroy_vm(struct kvm *kvm)
{
kfree(kvm->vpic);
kfree(kvm->vioapic);
kvm_free_vcpus(kvm);
kvm_free_physmem(kvm);
kfree(kvm);
}