From: Avi Kivity <avi@argo.co.il>
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
Date: Wed, 22 Mar 2006 21:12:15 +0200 [thread overview]
Message-ID: <4421A18F.4040600@argo.co.il> (raw)
In-Reply-To: <8764m7xzqg.fsf@duaron.myhome.or.jp>
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.
next prev parent reply other threads:[~2006-03-22 19:12 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-20 12:24 bert hubert
2006-03-20 14:50 ` Andreas Mohr
2006-03-20 15:24 ` Con Kolivas
2006-03-21 1:26 ` OGAWA Hirofumi
2006-03-21 0:40 ` kernel
2006-03-21 2:59 ` OGAWA Hirofumi
2006-03-21 3:09 ` Con Kolivas
2006-03-21 8:53 ` Andreas Mohr
2006-03-21 9:06 ` Arjan van de Ven
2006-03-21 11:58 ` Con Kolivas
2006-03-21 12:04 ` Arjan van de Ven
2006-03-21 12:07 ` Con Kolivas
2006-03-21 19:23 ` john stultz
2006-03-21 21:19 ` OGAWA Hirofumi
2006-03-22 0:21 ` Con Kolivas
2006-03-22 18:49 ` [PATCH] PM-Timer: doesn't use workaround if chipset is not buggy OGAWA Hirofumi
2006-03-22 21:46 ` Andrew Morton
2006-03-23 7:31 ` OGAWA Hirofumi
2006-03-23 7:49 ` Andrew Morton
2006-03-23 17:04 ` Andreas Mohr
2006-03-23 18:21 ` OGAWA Hirofumi
2006-03-30 11:53 ` Andreas Mohr
2006-03-30 15:37 ` OGAWA Hirofumi
2006-03-30 16:02 ` Andreas Mohr
2006-03-25 12:00 ` bert hubert
2006-03-22 19:12 ` Avi Kivity [this message]
2006-03-22 19:54 ` gettimeofday order of magnitude slower with pmtimer, which is default OGAWA Hirofumi
2006-03-22 20:05 ` john stultz
2006-03-21 19:34 ` john stultz
2006-03-21 5:33 Albert Cahalan
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