Re: [PATCH] KVM: MMU: Fix rmap_remove() race

[Avi Kivity <avi@qumranet.com>]

Andrea Arcangeli wrote:
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index 30bf832..a49987c 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -741,6 +741,10 @@ static struct vm_operations_struct kvm_vcpu_vm_ops = {
>  static int kvm_vcpu_mmap(struct file *file, struct vm_area_struct *vma)
>  {
>  	vma->vm_ops = &kvm_vcpu_vm_ops;
> +#ifndef CONFIG_MMU_NOTIFIER
> +	/* prevent the VM to release pages under sptes mappings */
> +	vma->vm_flags |= VM_LOCKED;
> +#endif
>  	return 0;
>  }
>  
>   

Erm I don't think this means what you think it means.  This is the 
kernel/user communication area, used to pass exit data to userspace.  
It's not the memslot vma.

-- 
error compiling committee.c: too many arguments to function


-------------------------------------------------------------------------
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace