From: Marcelo Tosatti <marcelo@kvack.org>
To: Avi Kivity <avi@qumranet.com>,
kvm-devel <kvm-devel@lists.sourceforge.net>
Subject: [PATCH] KVM: move alloc_apic_access_page() outside of non-preemptable region
Date: Thu, 14 Feb 2008 21:21:43 -0200 [thread overview]
Message-ID: <20080214232142.GA7924@dmt> (raw)
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>
Index: linux-2.6-x86-kvm/arch/x86/kvm/vmx.c
===================================================================
--- linux-2.6-x86-kvm.orig/arch/x86/kvm/vmx.c
+++ linux-2.6-x86-kvm/arch/x86/kvm/vmx.c
@@ -1601,9 +1601,6 @@ static int vmx_vcpu_setup(struct vcpu_vm
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;
}
@@ -2533,6 +2530,9 @@ static struct kvm_vcpu *vmx_create_vcpu(
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;
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next reply other threads:[~2008-02-14 23:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-14 23:21 Marcelo Tosatti [this message]
2008-02-17 9:39 ` [PATCH] KVM: move alloc_apic_access_page() outside of non-preemptable region Avi Kivity
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