linux-kernel - [PART1 V5 04/13] KVM: x86: Introducing kvm_x86

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Date:	Wed, 4 May 2016 14:09:43 -0500
From:	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
To:	<pbonzini@...hat.com>, <rkrcmar@...hat.com>, <joro@...tes.org>,
	<bp@...en8.de>, <gleb@...nel.org>, <alex.williamson@...hat.com>
CC:	<kvm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<wei@...hat.com>, <sherry.hurwitz@....com>,
	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>,
	Suravee Suthikulpanit <suravee.suthikulpanit@....com>
Subject: [PART1 V5 04/13] KVM: x86: Introducing kvm_x86_ops VCPU blocking/unblocking hooks

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.suthikulpanit@....com>
Reviewed-by: Paolo Bonzini <pbonzini@...hat.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 353d61b..1454859 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -993,6 +993,10 @@ 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);
 };
@@ -1344,7 +1348,16 @@ 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