linux-kernel - Re: [PATCH v3 04/12] Add "handle page fault" PV helper.

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Date:	Thu, 21 Jan 2010 11:05:46 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Gleb Natapov <gleb@...hat.com>
CC:	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>, kvm@...r.kernel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org, mingo@...e.hu,
	tglx@...utronix.de, riel@...hat.com, cl@...ux-foundation.org
Subject: Re: [PATCH v3 04/12] Add "handle page fault" PV helper.

On 01/21/2010 11:04 AM, Gleb Natapov wrote:
>
>> Do you mean create the stack frame manually?  I'd really like to
>> avoid that for many reasons, one of which is performance (need to do
>> all the virt-to-phys walks manually), the other is that we're
>> certain to end up with something horribly underspecified.  I'd
>> really like to keep as close as possible to the hardware.  For the
>> alternative approach, see Xen.
>>
>>      
> That and our event injection path can't play with guest memory right now
> since it is done from atomic context.
>    

That's true (I'd like to fix that though, for the real mode stuff).

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

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