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KVM: Introduce kvm_vcpu_destroy()

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Add kvm_vcpu_destroy() and wire up all architectures to call the common
function instead of their arch specific implementation.  The common
destruction function will be used by future patches to move allocation
and initialization of vCPUs to common KVM code, i.e. to free resources
that are allocated by arch agnostic code.

No functional change intended.

Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2019-12-18 13:55:14 -08:00 committed by Paolo Bonzini
parent d2423b347d
commit 4543bdc088
7 changed files with 12 additions and 5 deletions
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2
arch/mips/kvm/mips.c
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@ -156,7 +156,7 @@ void kvm_mips_free_vcpus(struct kvm *kvm)
struct kvm_vcpu *vcpu;
kvm_for_each_vcpu(i, vcpu, kvm) {
kvm_arch_vcpu_destroy(vcpu);
kvm_vcpu_destroy(vcpu);
}
mutex_lock(&kvm->lock);

2
arch/powerpc/kvm/powerpc.c
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@ -475,7 +475,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
#endif
kvm_for_each_vcpu(i, vcpu, kvm)
kvm_arch_vcpu_destroy(vcpu);
kvm_vcpu_destroy(vcpu);
mutex_lock(&kvm->lock);
for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)

2
arch/s390/kvm/kvm-s390.c
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@ -2541,7 +2541,7 @@ static void kvm_free_vcpus(struct kvm *kvm)
struct kvm_vcpu *vcpu;
kvm_for_each_vcpu(i, vcpu, kvm)
kvm_arch_vcpu_destroy(vcpu);
kvm_vcpu_destroy(vcpu);
mutex_lock(&kvm->lock);
for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)

2
arch/x86/kvm/x86.c
View File

@ -9680,7 +9680,7 @@ static void kvm_free_vcpus(struct kvm *kvm)
kvm_unload_vcpu_mmu(vcpu);
}
kvm_for_each_vcpu(i, vcpu, kvm)
kvm_arch_vcpu_destroy(vcpu);
kvm_vcpu_destroy(vcpu);
mutex_lock(&kvm->lock);
for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)

1
include/linux/kvm_host.h
View File

@ -581,6 +581,7 @@ static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu)
int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
void kvm_vcpu_destroy(struct kvm_vcpu *vcpu);
void vcpu_load(struct kvm_vcpu *vcpu);
void vcpu_put(struct kvm_vcpu *vcpu);

2
virt/kvm/arm/arm.c
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@ -194,7 +194,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
for (i = 0; i < KVM_MAX_VCPUS; ++i) {
if (kvm->vcpus[i]) {
kvm_arch_vcpu_destroy(kvm->vcpus[i]);
kvm_vcpu_destroy(kvm->vcpus[i]);
kvm->vcpus[i] = NULL;
}
}

6
virt/kvm/kvm_main.c
View File

@ -375,6 +375,12 @@ void kvm_vcpu_uninit(struct kvm_vcpu *vcpu)
}
EXPORT_SYMBOL_GPL(kvm_vcpu_uninit);
void kvm_vcpu_destroy(struct kvm_vcpu *vcpu)
{
kvm_arch_vcpu_destroy(vcpu);
}
EXPORT_SYMBOL_GPL(kvm_vcpu_destroy);
#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
static inline struct kvm *mmu_notifier_to_kvm(struct mmu_notifier *mn)
{