From: Russell King <rmk@arm.linux.org.uk>
To: Daniel Phillips <phillips@bonn-fries.net>
Cc: Andrea Arcangeli <andrea@suse.de>,
"Martin J. Bligh" <Martin.Bligh@us.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: Bug: Discontigmem virt_to_page() [Alpha,ARM,Mips64?]
Date: Mon, 6 May 2002 01:55:05 +0100 [thread overview]
Message-ID: <20020506015505.B14956@flint.arm.linux.org.uk> (raw)
In-Reply-To: <20020502180632.I11414@dualathlon.random> <E173LwB-00027n-00@starship> <20020503071554.P11414@dualathlon.random> <E174Vq8-0004BK-00@starship>
On Mon, May 06, 2002 at 01:54:52AM +0200, Daniel Phillips wrote:
> I must be guilty of not explaining clearly. Suppose you have the following
> physical memory map:
>
> 0: 128 MB
> 8000,0000: 128 MB
> 1,0000,0000: 128 MB
> 1,8000,0000: 128 MB
> 2,0000,0000: 128 MB
> 2,8000,0000: 128 MB
> 3,0000,0000: 128 MB
> 3,8000,0000: 128 MB
>
> The total is 1 GB of installed ram. Yet the kernel's 1G virtual space,
> can only handle 128 MB of it.
I see no problem with the above with the existing discontigmem stuff.
discontigmem does *not* require a linear relationship between kernel
virtual and physical memory. I've been running kernels for a while
on such systems.
Which was the reason for my comment at the start of this thread:
| On ARM, however, we have cherry to add here. __va() may alias certain
| physical memory addresses to the same virtual memory address, which
| makes:
--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
next prev parent reply other threads:[~2002-05-06 0:55 UTC|newest]
Thread overview: 152+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-26 18:27 Bug: Discontigmem virt_to_page() [Alpha,ARM,Mips64?] Russell King
2002-04-26 22:46 ` Andrea Arcangeli
2002-04-29 17:50 ` Martin J. Bligh
2002-04-29 22:00 ` Roman Zippel
2002-04-30 0:43 ` Andrea Arcangeli
2002-04-27 22:10 ` Daniel Phillips
2002-04-29 13:35 ` Andrea Arcangeli
2002-04-29 23:02 ` Daniel Phillips
2002-05-01 2:23 ` Andrea Arcangeli
2002-04-30 23:12 ` Daniel Phillips
2002-05-01 1:05 ` Daniel Phillips
2002-05-02 0:47 ` Andrea Arcangeli
2002-05-01 1:26 ` Daniel Phillips
2002-05-02 1:43 ` Andrea Arcangeli
2002-05-01 2:41 ` Daniel Phillips
2002-05-02 13:34 ` Andrea Arcangeli
2002-05-02 15:18 ` Martin J. Bligh
2002-05-02 15:35 ` Andrea Arcangeli
2002-05-01 15:42 ` Daniel Phillips
2002-05-02 16:06 ` Andrea Arcangeli
2002-05-02 16:10 ` Martin J. Bligh
2002-05-02 16:40 ` Andrea Arcangeli
2002-05-02 17:16 ` William Lee Irwin III
2002-05-02 18:41 ` Andrea Arcangeli
2002-05-02 19:19 ` William Lee Irwin III
2002-05-02 19:27 ` Daniel Phillips
2002-05-02 19:38 ` William Lee Irwin III
2002-05-02 19:58 ` Daniel Phillips
2002-05-03 6:28 ` Andrea Arcangeli
2002-05-03 6:10 ` Andrea Arcangeli
2002-05-02 22:20 ` Martin J. Bligh
2002-05-02 21:28 ` William Lee Irwin III
2002-05-02 21:52 ` Kurt Ferreira
2002-05-02 21:55 ` William Lee Irwin III
2002-05-03 6:38 ` Andrea Arcangeli
2002-05-03 6:58 ` Martin J. Bligh
2002-05-03 6:04 ` Andrea Arcangeli
2002-05-03 6:33 ` Martin J. Bligh
2002-05-03 8:38 ` Andrea Arcangeli
2002-05-03 9:26 ` William Lee Irwin III
2002-05-03 15:38 ` Martin J. Bligh
2002-05-03 15:17 ` Virtual address space exhaustion (was Discontigmem virt_to_page() ) Martin J. Bligh
2002-05-03 15:58 ` Andrea Arcangeli
2002-05-03 16:10 ` Martin J. Bligh
2002-05-03 16:25 ` Andrea Arcangeli
2002-05-03 16:02 ` Daniel Phillips
2002-05-03 16:20 ` Andrea Arcangeli
2002-05-03 16:41 ` Daniel Phillips
2002-05-03 16:58 ` Andrea Arcangeli
2002-05-03 18:08 ` Daniel Phillips
2002-05-03 9:24 ` Bug: Discontigmem virt_to_page() [Alpha,ARM,Mips64?] William Lee Irwin III
2002-05-03 10:30 ` Andrea Arcangeli
2002-05-03 11:09 ` William Lee Irwin III
2002-05-03 11:27 ` Andrea Arcangeli
2002-05-03 15:42 ` Martin J. Bligh
2002-05-03 15:32 ` Martin J. Bligh
2002-05-02 19:22 ` Daniel Phillips
2002-05-03 6:06 ` Andrea Arcangeli
2002-05-02 18:25 ` Daniel Phillips
2002-05-02 18:44 ` Andrea Arcangeli
2002-05-02 19:31 ` Martin J. Bligh
2002-05-02 18:57 ` Andrea Arcangeli
2002-05-02 19:08 ` Daniel Phillips
2002-05-03 5:15 ` Andrea Arcangeli
2002-05-05 23:54 ` Daniel Phillips
2002-05-06 0:28 ` Andrea Arcangeli
2002-05-06 0:34 ` Daniel Phillips
2002-05-06 1:01 ` Andrea Arcangeli
2002-05-06 0:55 ` Russell King [this message]
2002-05-06 1:07 ` Daniel Phillips
2002-05-06 1:20 ` Andrea Arcangeli
2002-05-06 1:24 ` Daniel Phillips
2002-05-06 1:42 ` Andrea Arcangeli
2002-05-06 1:48 ` Daniel Phillips
2002-05-06 2:06 ` Andrea Arcangeli
2002-05-06 17:40 ` Daniel Phillips
2002-05-06 19:09 ` Martin J. Bligh
2002-05-06 1:09 ` Andrea Arcangeli
2002-05-06 1:13 ` Daniel Phillips
2002-05-06 2:03 ` Daniel Phillips
2002-05-06 2:31 ` Andrea Arcangeli
2002-05-06 8:57 ` Russell King
2002-05-06 8:54 ` Roman Zippel
2002-05-06 15:26 ` Daniel Phillips
2002-05-06 19:07 ` Roman Zippel
2002-05-08 15:57 ` Daniel Phillips
2002-05-08 23:11 ` Roman Zippel
2002-05-09 16:08 ` Daniel Phillips
2002-05-09 22:06 ` Roman Zippel
2002-05-09 22:22 ` Daniel Phillips
2002-05-09 23:00 ` Roman Zippel
2002-05-09 23:22 ` Daniel Phillips
2002-05-10 0:13 ` Roman Zippel
2002-05-02 22:39 ` Martin J. Bligh
2002-05-03 7:04 ` Andrea Arcangeli
2002-05-02 23:42 ` Daniel Phillips
2002-05-03 7:45 ` Andrea Arcangeli
2002-05-02 16:07 ` Martin J. Bligh
2002-05-02 16:58 ` Gerrit Huizenga
2002-05-02 18:10 ` Andrea Arcangeli
2002-05-02 19:28 ` Gerrit Huizenga
2002-05-02 22:23 ` Martin J. Bligh
2002-05-03 6:20 ` Andrea Arcangeli
2002-05-03 6:39 ` Martin J. Bligh
2002-05-02 16:00 ` William Lee Irwin III
2002-05-02 2:37 ` William Lee Irwin III
2002-05-02 15:59 ` Andrea Arcangeli
2002-05-02 16:06 ` William Lee Irwin III
2002-05-01 18:05 ` Jesse Barnes
2002-05-01 23:17 ` Andrea Arcangeli
2002-05-01 23:23 ` discontiguous memory platforms Jesse Barnes
2002-05-02 0:51 ` Ralf Baechle
2002-05-02 1:27 ` Andrea Arcangeli
2002-05-02 1:32 ` Ralf Baechle
2002-05-02 8:50 ` Roman Zippel
2002-05-01 13:21 ` Daniel Phillips
2002-05-02 14:00 ` Roman Zippel
2002-05-01 14:08 ` Daniel Phillips
2002-05-02 17:56 ` Roman Zippel
2002-05-01 17:59 ` Daniel Phillips
2002-05-02 18:26 ` Roman Zippel
2002-05-02 18:32 ` Daniel Phillips
2002-05-02 19:40 ` Roman Zippel
2002-05-02 20:14 ` Daniel Phillips
2002-05-03 6:34 ` Andrea Arcangeli
2002-05-03 9:33 ` Roman Zippel
2002-05-03 6:30 ` Andrea Arcangeli
2002-05-02 18:35 ` Geert Uytterhoeven
2002-05-02 18:39 ` Daniel Phillips
2002-05-02 0:20 ` Bug: Discontigmem virt_to_page() [Alpha,ARM,Mips64?] Anton Blanchard
2002-05-01 1:35 ` Daniel Phillips
2002-05-02 1:45 ` William Lee Irwin III
2002-05-01 2:02 ` Daniel Phillips
2002-05-02 2:33 ` William Lee Irwin III
2002-05-01 2:44 ` Daniel Phillips
2002-05-02 1:46 ` Andrea Arcangeli
2002-05-01 1:56 ` Daniel Phillips
2002-05-02 1:01 ` Andrea Arcangeli
2002-05-02 15:28 ` Anton Blanchard
2002-05-01 16:10 ` Daniel Phillips
2002-05-02 15:59 ` Dave Engebretsen
2002-05-01 17:24 ` Daniel Phillips
2002-05-02 16:44 ` Dave Engebretsen
2002-05-02 16:31 ` William Lee Irwin III
2002-05-02 16:21 ` Dave Engebretsen
2002-05-02 17:28 ` William Lee Irwin III
2002-05-02 23:05 ` Daniel Phillips
2002-05-03 0:05 ` William Lee Irwin III
2002-05-03 1:19 ` Daniel Phillips
2002-05-03 19:47 ` Dave Engebretsen
2002-05-03 22:06 ` Daniel Phillips
2002-05-03 23:52 ` David Mosberger
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