From: Jens Axboe <axboe@suse.de>
To: Peter Wong <wpeter@us.ibm.com>
Cc: linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net
Subject: Re: Regarding Jens' Zero-Bounce Highmem I/O Patch
Date: Sun, 23 Sep 2001 12:47:03 +0200 [thread overview]
Message-ID: <20010923124703.A539@suse.de> (raw)
In-Reply-To: <OF2D7B8881.082D3FA6-ON85256ACC.0075C7C8@raleigh.ibm.com>
In-Reply-To: <OF2D7B8881.082D3FA6-ON85256ACC.0075C7C8@raleigh.ibm.com>
On Wed, Sep 19 2001, Peter Wong wrote:
> In order to use Jens' zero-bounce highmem I/O patch against 2.4.6,
> a small modification for the patch is needed. Simply replace
> GFP_BUFFER by GFP_NOIO in block-highmem-all-5.gz, which can be obtained
> at http://www.kernel.org/pub/linux/kernel/people/axboe/patches/2.4.6-pre1/.
>
> However, there is another problem. For both 2.4.5 and 2.4.6 with
> Jens' patches, if the kernels are built with 4GB highmem, they
> boot without problems. But if the kernels are built with 64GB
> highmem, the kernels hang right after uncompressing Linux. Has
> anyone seen this problem?
It's a "solved" problem (well sort of, I decided against including the <
4GB memory zone which was the cause of this problem) in this old
version. Use a more recent one and you'll be fine.
Or, use the old one and backout the zone changes.
--
Jens Axboe
prev parent reply other threads:[~2001-09-23 10:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-19 22:04 Regarding Jens' Zero-Bounce Highmem I/O Patch Peter Wong
2001-09-19 22:10 ` [Lse-tech] " Christoph Hellwig
2001-09-23 10:47 ` Jens Axboe [this message]
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