linux-kernel - Re: [PATCH v4 1/6] KVM: MMU: introduce gfn_to_pfn

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Date:	Fri, 2 Jul 2010 13:47:56 -0300
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>,
	Ingo Molnar <mingo@...e.hu>, Nick Piggin <npiggin@...e.de>
Cc:	Avi Kivity <avi@...hat.com>, LKML <linux-kernel@...r.kernel.org>,
	KVM list <kvm@...r.kernel.org>
Subject: Re: [PATCH v4 1/6] KVM: MMU: introduce gfn_to_pfn_atomic() function

On Thu, Jul 01, 2010 at 09:53:04PM +0800, Xiao Guangrong wrote:
> Introduce gfn_to_pfn_atomic(), it's the fast path and can used in atomic
> context, the later patch will use it
> 
> Signed-off-by: Xiao Guangrong <xiaoguangrong@...fujitsu.com>
> ---
>  arch/x86/mm/gup.c        |    2 ++
>  include/linux/kvm_host.h |    1 +
>  virt/kvm/kvm_main.c      |   32 +++++++++++++++++++++++++-------
>  3 files changed, 28 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
> index 738e659..0c9034b 100644
> --- a/arch/x86/mm/gup.c
> +++ b/arch/x86/mm/gup.c
> @@ -6,6 +6,7 @@
>   */
>  #include <linux/sched.h>
>  #include <linux/mm.h>
> +#include <linux/module.h>
>  #include <linux/vmstat.h>
>  #include <linux/highmem.h>
>  
> @@ -274,6 +275,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
>  
>  	return nr;
>  }
> +EXPORT_SYMBOL_GPL(__get_user_pages_fast);
>  
>  /**
>   * get_user_pages_fast() - pin user pages in memory

This should be a separate patch (overlooked that before). Ingo, Nick,
can this go in through the kvm tree?

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