From: Marcelo Tosatti <marcelo@kvack.org>
Date: Thu, 14 Feb 2008 23:21:43 +0000 (-0200)
Subject: KVM: move alloc_apic_access_page() outside of non-preemptable region
X-Git-Tag: v2.6.25-rc4~97^2~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5e4a0b3c1b899bb0ba28bde6edf95c5ddeb48b5c;p=platform%2Fkernel%2Flinux-3.10.git

KVM: move alloc_apic_access_page() outside of non-preemptable region

alloc_apic_access_page() can sleep, while vmx_vcpu_setup is called
inside a non preemptable region. Move it after put_cpu().

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 86f5bf1..61c2a3a 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1605,9 +1605,6 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
 	vmcs_writel(CR0_GUEST_HOST_MASK, ~0UL);
 	vmcs_writel(CR4_GUEST_HOST_MASK, KVM_GUEST_CR4_MASK);
 
-	if (vm_need_virtualize_apic_accesses(vmx->vcpu.kvm))
-		if (alloc_apic_access_page(vmx->vcpu.kvm) != 0)
-			return -ENOMEM;
 
 	return 0;
 }
@@ -2537,6 +2534,9 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
 	put_cpu();
 	if (err)
 		goto free_vmcs;
+	if (vm_need_virtualize_apic_accesses(kvm))
+		if (alloc_apic_access_page(kvm) != 0)
+			goto free_vmcs;
 
 	return &vmx->vcpu;