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Re: [Xen-devel] Failure with ATI Radeon 9600

To: Jacob Gorm Hansen <jacobg@xxxxxxx>
Subject: Re: [Xen-devel] Failure with ATI Radeon 9600
From: Jacob Gorm Hansen <jacobg@xxxxxxx>
Date: Mon, 31 Jan 2005 19:52:08 -0800
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxxx>
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Jacob Gorm Hansen wrote:

Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected an Intel i875 Chipset.
agpgart: Maximum main memory to use for agp memory: 440M
agpgart: unable to get memory for graphics translation table.
agpgart: agp_backend_initialize() failed.
agpgart-intel: probe of 0000:00:00.0 failed with error -12

The reason agp_generic_create_gatt_table() fails is that ioremap_nocache() always return NULL. (Whether or not the subsequent X crash has anything to do with this is not clear -- the ATI wrapper has quite a few references to virt_to_phys(), so likely some problems there as well.)

Is there a good reason for this / what will it take to implement ioremap_nocache correctly?

Jacob


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