[PART1 RFC v3 03/12] KVM: x86: Introducing kvm_x86_ops VCPU blocking/unblocking hooks

[Suravee Suthikulpanit]

Adding new function pointer in struct kvm_x86_ops, and calling them
from the kvm_arch_vcpu[blocking/unblocking].

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
---
 arch/x86/include/asm/kvm_host.h | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 4b0dd0f..87eac2a 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -972,6 +972,10 @@ struct kvm_x86_ops {
         */
        int (*pre_block)(struct kvm_vcpu *vcpu);
        void (*post_block)(struct kvm_vcpu *vcpu);
+
+       void (*vcpu_blocking)(struct kvm_vcpu *vcpu);
+       void (*vcpu_unblocking)(struct kvm_vcpu *vcpu);
+
        int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq,
                              uint32_t guest_irq, bool set);
 };
@@ -1323,7 +1327,16 @@ bool kvm_intr_is_single_vcpu(struct kvm *kvm, struct 
kvm_lapic_irq *irq,
 void kvm_set_msi_irq(struct kvm_kernel_irq_routing_entry *e,
                     struct kvm_lapic_irq *irq);
 
-static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
-static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
+static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu)
+{
+       if (kvm_x86_ops->vcpu_blocking)
+               kvm_x86_ops->vcpu_blocking(vcpu);
+}
+
+static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu)
+{
+       if (kvm_x86_ops->vcpu_unblocking)
+               kvm_x86_ops->vcpu_unblocking(vcpu);
+}
 
 #endif /* _ASM_X86_KVM_HOST_H */
-- 
1.9.1