linux-kernel - [PATCH 29/54] KVM: Portability: Create kvm_arch_vcpu

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Date:	Tue,  1 Jan 2008 17:35:55 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	linux-kernel@...r.kernel.org, kvm-devel@...ts.sourceforge.net
Cc:	Hollis Blanchard <hollisb@...ibm.com>
Subject: [PATCH 29/54] KVM: Portability: Create kvm_arch_vcpu_runnable() function

From: Hollis Blanchard <hollisb@...ibm.com>

This abstracts the detail of x86 hlt and INIT modes into a function.

Signed-off-by: Hollis Blanchard <hollisb@...ibm.com>
Acked-by: Carsten Otte <cotte@...ibm.com>
Signed-off-by: Avi Kivity <avi@...ranet.com>
---
 drivers/kvm/kvm_main.c |    3 +--
 drivers/kvm/x86.h      |    7 +++++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 7785c90..3d1023c 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -643,8 +643,7 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
 	 */
 	while (!kvm_cpu_has_interrupt(vcpu)
 	       && !signal_pending(current)
-	       && vcpu->mp_state != VCPU_MP_STATE_RUNNABLE
-	       && vcpu->mp_state != VCPU_MP_STATE_SIPI_RECEIVED) {
+	       && !kvm_arch_vcpu_runnable(vcpu)) {
 		set_current_state(TASK_INTERRUPTIBLE);
 		vcpu_put(vcpu);
 		schedule();
diff --git a/drivers/kvm/x86.h b/drivers/kvm/x86.h
index 4b7acc7..eed7964 100644
--- a/drivers/kvm/x86.h
+++ b/drivers/kvm/x86.h
@@ -471,4 +471,11 @@ static inline u32 get_rdx_init_val(void)
 #define TSS_IOPB_SIZE (65536 / 8)
 #define TSS_REDIRECTION_SIZE (256 / 8)
 #define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
+
+static inline int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
+{
+	return vcpu->mp_state == VCPU_MP_STATE_RUNNABLE
+	       || vcpu->mp_state == VCPU_MP_STATE_SIPI_RECEIVED;
+}
+
 #endif
-- 
1.5.3.7

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