Message-ID: <4421A18F.4040600@argo.co.il>
Date: Wed, 22 Mar 2006 21:12:15 +0200
From: Avi Kivity <avi@argo.co.il>
User-Agent: Thunderbird 1.5 (X11/20060313)
MIME-Version: 1.0
To: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
CC: john stultz <johnstul@us.ibm.com>, Con Kolivas <kernel@kolivas.org>,
       Andreas Mohr <andi@rhlx01.fht-esslingen.de>,
       bert hubert <bert.hubert@netherlabs.nl>, linux-kernel@vger.kernel.org,
       george@mvista.com
Subject: Re: gettimeofday order of magnitude slower with pmtimer, which is
 default
References: <20060320122449.GA29718@outpost.ds9a.nl>	<20060320145047.GA12332@rhlx01.fht-esslingen.de>	<200603210224.23540.kernel@kolivas.org>	<87wteo37vr.fsf@duaron.myhome.or.jp>	<1142968999.4281.4.camel@leatherman> <8764m7xzqg.fsf@duaron.myhome.or.jp>
In-Reply-To: <8764m7xzqg.fsf@duaron.myhome.or.jp>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1013
Lines: 29

OGAWA Hirofumi wrote:
> john stultz <johnstul@us.ibm.com> writes:
>
>   
>> In my TOD rework I've dropped the triple read, figuring if a problem
>> arose we could blacklist the specific box. This patch covers that, so it
>> looks like a good idea to me.
>>
>> I've not tested it myself, but if you feel good about it, please send it
>> to Andrew.
>>     
>
> Current patch is the following. If I'm missing something, or you have
> some comment, please tell me. (Since I don't have ICH4, ICH4 detection
> is untested)
>   
Doesn't it make sense to mark the port as user accessible in the I/O 
permissions bitmap and export it as a vsyscall? that would save the 
syscall overhead.


-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/