From: Yinghai Lu <Yinghai.Lu@Sun.COM>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Muli Ben-Yehuda <muli@il.ibm.com>, Andi Kleen <ak@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Vivek Goyal <vgoyal@in.ibm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86-64: disable the GART before allocate aperture
Date: Fri, 22 Jun 2007 15:43:00 -0700 [thread overview]
Message-ID: <467C5074.6050103@sun.com> (raw)
In-Reply-To: <m1tzszaadm.fsf@ebiederm.dsl.xmission.com>
Eric W. Biederman wrote:
> The original design came from thinking about systems where using the iommu
> was mandatory. I think we almost always reserve memory below 1G for the kexec
> on panic kernel so it really shouldn't be an issue in that case. Except
> we need to pass an option to force not using the iommu. I don't think
> noiommu or swiotlb is going to make any real difference.
>
> So I'm totally in favor of turning off features if we don't need them and we
> don't take a tremendous performance hit. (People get grumpy when writing
> all of memory to disk takes completely unreasonable amounts of time).
So you prefer to
add diable_gart in shutdown or suspend func and let kexec to use swiotlb comand line?
YH
next prev parent reply other threads:[~2007-06-22 22:41 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-22 19:19 [PATCH] x86-64: disable the GART before allocate aperture Yinghai Lu
2007-06-22 19:31 ` Muli Ben-Yehuda
2007-06-22 19:38 ` Yinghai Lu
2007-06-22 19:49 ` Yinghai Lu
2007-06-22 20:33 ` Alan Cox
2007-06-22 21:28 ` Andi Kleen
2007-06-22 21:38 ` Yinghai Lu
2007-06-22 21:41 ` Eric W. Biederman
2007-06-22 21:32 ` Eric W. Biederman
2007-06-22 21:45 ` Muli Ben-Yehuda
2007-06-22 21:59 ` Yinghai Lu
2007-06-22 22:19 ` Alan Cox
2007-06-22 22:32 ` Eric W. Biederman
2007-06-22 22:43 ` Yinghai Lu [this message]
2007-06-22 22:54 ` Alan Cox
2007-06-22 22:57 ` Yinghai Lu
2007-06-22 23:04 ` Alan Cox
2007-06-22 23:14 ` Eric W. Biederman
2007-06-23 0:14 ` Andi Kleen
2007-06-23 0:27 ` Yinghai Lu
2007-06-23 0:35 ` Muli Ben-Yehuda
2007-06-23 0:38 ` Andi Kleen
2007-06-23 2:34 ` [PATCH] x86-64: disable the GART in shutdown Yinghai Lu
2007-06-23 10:39 ` Muli Ben-Yehuda
2007-06-23 10:59 ` Andi Kleen
2007-06-23 11:09 ` Muli Ben-Yehuda
2007-06-23 11:08 ` Andi Kleen
2007-06-25 0:18 ` Yinghai Lu
2007-06-23 16:52 ` Andrew Morton
2007-06-25 0:22 ` Yinghai Lu
2007-06-25 2:10 ` Muli Ben-Yehuda
2007-06-25 19:34 ` [PATCH] x86-64: disable the GART in shutdown v2 Yinghai Lu
2007-06-25 19:41 ` Muli Ben-Yehuda
2007-06-25 19:52 ` Yinghai Lu
2007-06-25 19:56 ` Muli Ben-Yehuda
2007-06-25 21:48 ` [PATCH 1/2] x86-64: disable the GART in shutdown Yinghai Lu
2007-06-25 21:49 ` [PATCH 2/2] x86_84: move iommu declaration from proto to iommu.h Yinghai Lu
2007-06-26 11:43 ` Muli Ben-Yehuda
2007-06-23 9:08 ` [PATCH] x86-64: disable the GART before allocate aperture Alan Cox
2007-06-23 11:12 ` Vivek Goyal
2007-06-23 13:14 ` Andi Kleen
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