From: "Yinghai Lu" <yinghai@kernel.org>
To: "Matthew Wilcox" <matthew@wil.cx>
Cc: "Grant Grundler" <grundler@parisc-linux.org>,
"Jesse Barnes" <jbarnes@virtuousgeek.org>,
"Ingo Molnar" <mingo@elte.hu>,
"Thomas Gleixner" <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org
Subject: Re: [PATCH] pci: show dma_mask bits in /sys
Date: Wed, 22 Oct 2008 21:19:50 -0700 [thread overview]
Message-ID: <86802c440810222119l7f06f11bgf84cb66e5c232b8f@mail.gmail.com> (raw)
In-Reply-To: <20081023032833.GK26094@parisc-linux.org>
On Wed, Oct 22, 2008 at 8:28 PM, Matthew Wilcox <matthew@wil.cx> wrote:
> On Wed, Oct 22, 2008 at 06:45:10PM -0700, Yinghai Lu wrote:
>> Grant prefer to add it /sys instead of showing in bootlog
>>
>> so could catch if the driver set the correct dma_mask.
>
> I still don't think this is useful information to be exposing.
>
RHEL 4.6 driver sata_mv is very run out of gart IOMMU, and need iommu
apterture to be 512M...
when loading is high, and it turns out every those card support 64bit
DMA, the driver DID NOT set dma to 64bit
so it still use 32 bit...
YH
next prev parent reply other threads:[~2008-10-23 4:20 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-08 23:02 [PATCH] pci: print out DMA mask info Yinghai Lu
2008-10-09 21:18 ` Grant Grundler
2008-10-09 21:27 ` Yinghai Lu
2008-10-09 21:35 ` Matthew Wilcox
2008-10-09 21:51 ` Yinghai Lu
2008-10-09 22:55 ` Grant Grundler
2008-10-09 23:05 ` Yinghai Lu
2008-10-10 2:40 ` FUJITA Tomonori
2008-10-10 4:56 ` Yinghai Lu
2008-10-10 6:08 ` FUJITA Tomonori
2008-10-10 6:32 ` Yinghai Lu
2008-10-10 7:32 ` FUJITA Tomonori
2008-10-12 7:16 ` Grant Grundler
2008-10-10 22:45 ` Grant Grundler
2008-10-14 6:50 ` FUJITA Tomonori
2008-10-12 7:11 ` Grant Grundler
2008-10-23 1:45 ` [PATCH] pci: show dma_mask bits in /sys Yinghai Lu
2008-10-23 3:28 ` Matthew Wilcox
2008-10-23 4:19 ` Yinghai Lu [this message]
2008-10-23 6:44 ` Grant Grundler
2008-10-23 8:38 ` Rolf Eike Beer
2008-10-23 15:39 ` Greg KH
2008-10-23 18:37 ` H. Peter Anvin
2008-10-23 19:36 ` Grant Grundler
2008-10-23 19:49 ` Greg KH
2008-10-24 10:50 ` Andi Kleen
2008-11-01 17:10 ` Grant Grundler
2008-10-23 6:48 ` Grant Grundler
2008-10-23 6:51 ` Yinghai Lu
2008-10-23 19:28 ` Grant Grundler
2008-10-10 2:40 ` [PATCH] pci: print out DMA mask info FUJITA Tomonori
2008-10-10 2:59 ` FUJITA Tomonori
2008-10-10 2:40 ` FUJITA Tomonori
2008-10-10 15:48 ` Jesse Barnes
2008-10-10 16:19 ` Yinghai Lu
2008-10-10 16:28 ` Jesse Barnes
2008-10-10 16:33 ` Matthew Wilcox
2008-10-10 16:46 ` Yinghai Lu
2008-10-10 17:12 ` Matthew Wilcox
2008-10-10 17:18 ` Roland Dreier
2008-10-12 7:38 ` Grant Grundler
2008-10-12 7:20 ` Grant Grundler
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