linux-kernel - Re: [patch 05/18] kvm: nopage

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Message-ID: <47568011.1080409@qumranet.com>
Date:	Wed, 05 Dec 2007 12:40:17 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	npiggin@...e.de
CC:	akpm@...ux-foundation.org, kvm-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 05/18] kvm: nopage

npiggin@...e.de wrote:
> Convert KVM from nopage to fault.
>
>   

> @@ -3111,27 +3105,21 @@ out:
>  	return r;
>  }
>  
> -static struct page *kvm_vm_nopage(struct vm_area_struct *vma,
> -				  unsigned long address,
> -				  int *type)
> +static int kvm_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
>  {
>  	struct kvm *kvm = vma->vm_file->private_data;
> -	unsigned long pgoff;
>  	struct page *page;
>  
> -	pgoff = ((address - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
> -	page = gfn_to_page(kvm, pgoff);
> +	page = gfn_to_page(kvm, vmf->pgoff);
>  	if (!page)
> -		return NOPAGE_SIGBUS;
> +		return VM_FAULT_SIGBUS;
>  	get_page(page);
> -	if (type != NULL)
> -		*type = VM_FAULT_MINOR;
> -
> -	return page;
> +	vmf->page = page;
> +	return 0;
>  }
>  
>   

This part has changed in kvm.git, so this won't apply to -mm.  I ported 
it and applied to my tree, so it should arrive in -mm when Andrew 
re-fetches.

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

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