Bug 20340 – agpgart resource allocation problem

Bug 20340 - agpgart resource allocation problem

Summary:	agpgart resource allocation problem

Status:	CLOSED RAWHIDE

Aliases:	None

Product:	Red Hat Linux
Classification:	Retired
Component:	kernel (Show other bugs)
Sub Component:
Version:	7.1
Hardware:	i386 Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Michael K. Johnson
QA Contact:	Brock Organ
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Blocks:
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Reported:	2000-11-04 14:42 EST by Ed McKenzie
Modified:	2007-04-18 12:29 EDT (History)
CC List:	0 users

See Also:
Fixed In Version:
Doc Type:	Bug Fix
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Environment:
Last Closed:	2001-02-21 19:48:59 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Ed McKenzie 2000-11-04 14:42:13 EST

Loading agpgart works the first time, but unloading and reloading it
results in the kernel finding the AGP aperture at 0x0. Obviously, starting
X with DRI after that leads to a hard freeze.

VIA MVP3 chipset, K6-2/400, Matrox G200 AGP, default RedHat 7.0 kernel. I
should add that I've yet to try a kernel (RH 2.2.14, stock 2.4.x-test,
etc.) that doesn't crash in this manner on my system.

I've filed bugs for this on dri.sourceforge.net as well as e-mails to lkml
and the agpgart maintainer, but to no avail. I suppose this isn't really an
interesting problem? The suggested fix seems to be to compile agpgart
static and be done with it, but that seems to me like a rather silly
solution.

Comment 1 Ed McKenzie 2001-02-21 16:36:24 EST

This bug is still present in Fisher. Obviously, the issue persists in 2.4 

kernels.



I think this could potentially be a problem for machines that boot in text by 

default and only use X occasionally -- agpgart would be removed after 

being unused for a period, and the next startx would lock the machine 

solid. I run gdm by default, so this is just idle speculation, but it's my 

feeling that this should be fixed.

Comment 2 Michael K. Johnson 2001-02-21 19:27:09 EST

Well, it could at least default to not being unloaded automatically...

Comment 3 Alan Cox 2001-02-21 19:41:06 EST

This problem should not been seen in recent -ac kernels

Comment 4 Michael K. Johnson 2001-02-21 19:48:55 EST

Ah, in that case, please upgrade to our latest beta kernel when it
is available (2.4.1-0.1.9 or later) and let us know whether or not
it fixes the problem.  Thanks!

Comment 5 Ed McKenzie 2001-03-15 12:27:38 EST

Fixed in 2.4.2-0.1.25 (and also in 2.4.2-ac19.)

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