Re: [Lse-tech] Regarding Jens' Zero-Bounce Highmem I/O Patch
Christoph Hellwig (hch@ns.caldera.de)
Thu, 20 Sep 2001 00:10:48 +0200
On Wed, Sep 19, 2001 at 05:04:59PM -0500, 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?
block-highmem-all-5 is _very_ _very_ old.
Please upgrade to a recent kernel and patch and report again.
I had a system with PAE enabled and 2.4.9ac + some hacked block-highmem
patch running very well here. (Probably it still runns :))
Christoph
--
Of course it doesn't work. We've performed a software upgrade.
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