linux-kernel - [PATCH 38/46] KVM: ia64: preserve int status through call to kvm_insert_vmm

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Message-Id: <1242818323-10413-39-git-send-email-avi@redhat.com>
Date:	Wed, 20 May 2009 14:18:35 +0300
From:	Avi Kivity <avi@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	kvm@...r.kernel.org
Subject: [PATCH 38/46] KVM: ia64: preserve int status through call to kvm_insert_vmm_mapping

From: Jes Sorensen <jes@....com>

Preserve interrupt status around call to kvm_insert_vmm_mappin()
in kvm_vcpu_pre_transition().

Signed-off-by: Jes Sorensen <jes@....com>
Acked-by: Xiantao Zhang <xiantao.zhang@...el.com>
Signed-off-by: Avi Kivity <avi@...hat.com>
---
 arch/ia64/kvm/kvm-ia64.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 5b868db..cf5a193 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -619,6 +619,8 @@ static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
 
 static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
 {
+	unsigned long psr;
+	int r;
 	int cpu = smp_processor_id();
 
 	if (vcpu->arch.last_run_cpu != cpu ||
@@ -630,7 +632,10 @@ static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
 
 	vcpu->arch.host_rr6 = ia64_get_rr(RR6);
 	vti_set_rr6(vcpu->arch.vmm_rr);
-	return kvm_insert_vmm_mapping(vcpu);
+	local_irq_save(psr);
+	r = kvm_insert_vmm_mapping(vcpu);
+	local_irq_restore(psr);
+	return r;
 }
 
 static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
-- 
1.6.0.6

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