From: William Lee Irwin III <wli@holomorphy.com>
To: "Jeff V. Merkey" <jmerkey@vger.timpanogas.org>
Cc: linux-kernel@vger.kernel.org, jmerkey@timpanogas.org
Subject: Re: Questton about Zone Allocation 2.4.X
Date: Thu, 2 Jan 2003 16:00:34 -0800 [thread overview]
Message-ID: <20030103000034.GU9704@holomorphy.com> (raw)
In-Reply-To: <20030102180849.A21498@vger.timpanogas.org>
At some point in the past, I wrote:
>> __get_free_pages() allocates from lowmem (i.e. 0-4GB) only.
>> Allocate from highmem instead.
0-1GB. page_address() will give unpredictable results on highmem GFP masks.
On Thu, Jan 02, 2003 at 06:08:49PM -0700, Jeff V. Merkey wrote:
> 0-4GB is where I need to allocate, so allocating from highmem is not
> a solution. I found the Ingo/Andrea patch for RH 8.0, but this patch
> looks a little scary since it affects the memory allocations between
> user and kernel space and the ratios alloted to these areas (I may
> be missing something here -- as Dave M. puts it "Jeff you are such a pain
> in the ass sometimes" :-).
There is no GFP mask for it. Port Jens' ZONE_DMA32 or something, or roll
ZONE_4G on your own if need be.
Bill
next prev parent reply other threads:[~2003-01-02 23:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-03 0:55 Questton about Zone Allocation 2.4.X Jeff V. Merkey
2003-01-02 23:51 ` William Lee Irwin III
2003-01-02 23:54 ` William Lee Irwin III
2003-01-03 1:08 ` Jeff V. Merkey
2003-01-03 0:00 ` William Lee Irwin III [this message]
2003-01-03 1:15 ` Question " Jeff V. Merkey
2003-01-03 0:11 ` William Lee Irwin III
2003-01-03 1:32 ` Jeff V. Merkey
2003-01-03 0:30 ` William Lee Irwin III
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