linux-kernel - Re: [RFC PATCH 0/3] generic hypercall support

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Message-ID: <20090507190751.GE3036@sequoia.sous-sol.org>
Date:	Thu, 7 May 2009 12:07:51 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	Avi Kivity <avi@...hat.com>
Cc:	Gregory Haskins <ghaskins@...ell.com>,
	Gregory Haskins <gregory.haskins@...il.com>,
	Chris Wright <chrisw@...s-sol.org>,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Anthony Liguori <anthony@...emonkey.ws>
Subject: Re: [RFC PATCH 0/3] generic hypercall support

* Avi Kivity (avi@...hat.com) wrote:
> Gregory Haskins wrote:
>> Cool,  I will code this up and submit it.  While Im at it, Ill run it
>> through the "nullio" ringer, too. ;)  It would be cool to see the
>> pv-mmio hit that 2.07us number.  I can't think of any reason why this
>> will not be the case.
>
> Don't - it's broken.  It will also catch device assignment mmio and  
> hypercall them.

Not necessarily.  It just needs to be creative w/ IO_COND
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