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Date: Thu, 07 May 2009 21:12:02 +0300
From: Avi Kivity <avi@redhat.com>
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To: Gregory Haskins <gregory.haskins@gmail.com>
CC: Gregory Haskins <ghaskins@novell.com>, Chris Wright <chrisw@sous-sol.org>,
       linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
       Anthony Liguori <anthony@codemonkey.ws>
Subject: Re: [RFC PATCH 0/3] generic hypercall support
References: <20090505132005.19891.78436.stgit@dev.haskins.net> <4A0040C0.1080102@redhat.com> <4A0041BA.6060106@novell.com> <4A004676.4050604@redhat.com> <4A0049CD.3080003@gmail.com> <20090505231718.GT3036@sequoia.sous-sol.org> <4A010927.6020207@novell.com> <20090506072212.GV3036@sequoia.sous-sol.org> <4A018DF2.6010301@novell.com> <20090506160712.GW3036@sequoia.sous-sol.org> <4A031471.7000406@novell.com> <4A0322F1.2000905@redhat.com> <4A032390.6030100@gmail.com>
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Gregory Haskins wrote:
>> What do you think of my mmio hypercall?  That will speed up all mmio
>> to be as fast as a hypercall, and then we can use ordinary mmio/pio
>> writes to trigger things.
>>
>>     
> I like it!
>
> Bigger question is what kind of work goes into making mmio a pv_op (or
> is this already done)?
>
>   

Looks like it isn't there.  But it isn't any different than set_pte - 
convert a write into a hypercall.


-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.