From: Avi Kivity <[EMAIL PROTECTED]>

Can cause nasty deadlocks.

Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 6208325..3499205 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -399,9 +399,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t 
addr,
                return 0;
        }
 
-       down_read(&current->mm->mmap_sem);
        page = gfn_to_page(vcpu->kvm, walker.gfn);
-       up_read(&current->mm->mmap_sem);
 
        spin_lock(&vcpu->kvm->mmu_lock);
        kvm_mmu_free_some_pages(vcpu);

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