[arch-dev-public] kernel26 2.6.25-1 enters [testing]

[Pierre Schmitz]

Am Samstag, 19. April 2008 18:09:08 schrieb Thomas Bächler:
> If there are any problems due to the configuration changes or new kernel
> bugs, please let me know.

I got the following error when using the nvidia driver: 


NVRM: bad caching on address 0xffff81007c91a000: actual 0x173 != expected 
0x17b
NVRM: please see the README section on Cache Aliasing for more information
NVRM: bad caching on address 0xffff81007c91b000: actual 0x173 != expected 
0x17b
NVRM: bad caching on address 0xffff81007cbad000: actual 0x173 != expected 
0x17b
NVRM: bad caching on address 0xffff81007cbb4000: actual 0x173 != expected 
0x17b
NVRM: bad caching on address 0xffff81007cbb5000: actual 0x173 != expected 
0x17b
NVRM: bad caching on address 0xffff81007cbb6000: actual 0x173 != expected 
0x17b
NVRM: bad caching on address 0xffff81007cbb7000: actual 0x173 != expected 
0x17b
NVRM: bad caching on address 0xffff81007cbb8000: actual 0x173 != expected 
0x17b
NVRM: bad caching on address 0xffff81007cbb9000: actual 0x173 != expected 
0x17b
NVRM: bad caching on address 0xffff81007cbba000: actual 0x173 != expected 
0x17b

Even when using the 173.08 beta driver which is meant for kernel 2.6.25 I got 
the same errors. Any ideas?

And here is the mentioned part of the README:

Cache Aliasing

    Cache aliasing occurs when multiple mappings to a physical page of memory
    have conflicting caching states, such as cached and uncached. Due to these
    conflicting states, data in that physical page may become corrupted when
    the processor's cache is flushed. If that page is being used for DMA by a
    driver such as NVIDIA's graphics driver, this can lead to hardware
    stability problems and system lockups.

    NVIDIA has encountered bugs with some Linux kernel versions that lead to
    cache aliasing. Although some systems will run perfectly fine when cache
    aliasing occurs, other systems will experience severe stability problems,
    including random lockups. Users experiencing stability problems due to
    cache aliasing will benefit from updating to a kernel that does not cause
    cache aliasing to occur.

    NVIDIA has added driver logic to detect cache aliasing and to print a
    warning with a message similar to the following:

    NVRM: bad caching on address 0x1cdf000: actual 0x46 != expected 0x73

    If you see this message in your log files and are experiencing stability
    problems, you should update your kernel to the latest version.

    If the message persists after updating your kernel, send a bug report to
    NVIDIA.


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