linux-kernel - Re: [PATCH v5 11/12] Let host know whether the guest can handle async PF in non-userspace context.

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Date:	Tue, 24 Aug 2010 12:31:36 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Gleb Natapov <gleb@...hat.com>
CC:	kvm@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, mingo@...e.hu,
	a.p.zijlstra@...llo.nl, tglx@...utronix.de, hpa@...or.com,
	riel@...hat.com, cl@...ux-foundation.org, mtosatti@...hat.com
Subject: Re: [PATCH v5 11/12] Let host know whether the guest can handle async
 PF in non-userspace context.

  On 07/19/2010 06:31 PM, Gleb Natapov wrote:
> If guest can detect that it runs in non-preemptable context it can
> handle async PFs at any time, so let host know that it can send async
> PF even if guest cpu is not in userspace.
>
> Acked-by: Rik van Riel<riel@...hat.com>
> Signed-off-by: Gleb Natapov<gleb@...hat.com>
> ---
>   arch/x86/include/asm/kvm_host.h |    1 +
>   arch/x86/include/asm/kvm_para.h |    1 +
>   arch/x86/kernel/kvm.c           |    3 +++
>   arch/x86/kvm/x86.c              |    5 +++--
>   4 files changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index 45e6c12..c675d5d 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -367,6 +367,7 @@ struct kvm_vcpu_arch {
>   	cpumask_var_t wbinvd_dirty_mask;
>
>   	u32 __user *apf_data;
> +	bool apf_send_user_only;
>   	u32 apf_memslot_ver;
>   	u64 apf_msr_val;
>   	u32 async_pf_id;

Lots of apf stuff in here.  Make it apg.data etc.?

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

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