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

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Date:	Wed, 20 Jan 2010 14:00:00 +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 01/20/2010 12:02 PM, Gleb Natapov wrote:
>
> I can inject the event as HW interrupt on vector greater then 32 but not
> go through APIC so EOI will not be required. This sounds non-architectural
> and I am not sure kernel has entry point code for this kind of event, it
> has one for exception and one for interrupts that goes through __do_IRQ()
> which assumes that interrupts should be ACKed.
>    

Further, we start to interact with the TPR; Linux doesn't use the TPR or 
cr8 but if it does one day we don't want it interfering with apf.

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

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