KVM: x86: Introducing kvm_x86_ops VM init/destroy hooks

Adding function pointers in struct kvm_x86_ops for processor-specific
layer to provide hooks for when KVM initialize and destroy VM.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index c99494b..d644226 100644 (file)
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -848,6 +848,9 @@ struct kvm_x86_ops {
        bool (*cpu_has_high_real_mode_segbase)(void);
        void (*cpuid_update)(struct kvm_vcpu *vcpu);
 
+       int (*vm_init)(struct kvm *kvm);
+       void (*vm_destroy)(struct kvm *kvm);
+
        /* Create, but do not attach this VCPU */
        struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
        void (*vcpu_free)(struct kvm_vcpu *vcpu);

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index bcef92f..7fcaed4 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7756,6 +7756,9 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
        kvm_page_track_init(kvm);
        kvm_mmu_init_vm(kvm);
 
+       if (kvm_x86_ops->vm_init)
+               return kvm_x86_ops->vm_init(kvm);
+
        return 0;
 }
 
@@ -7877,6 +7880,8 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
                x86_set_memory_region(kvm, IDENTITY_PAGETABLE_PRIVATE_MEMSLOT, 0, 0);
                x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, 0, 0);
        }
+       if (kvm_x86_ops->vm_destroy)
+               kvm_x86_ops->vm_destroy(kvm);
        kvm_iommu_unmap_guest(kvm);
        kfree(kvm->arch.vpic);
        kfree(kvm->arch.vioapic);