Messages in this thread | | | From | "David L. DeGeorge" <> | Subject | Re: CPU/cache detection wrong | Date | Mon, 30 Sep 2002 21:06:10 -0400 |
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I too have incorrect CPU/cache detection using 2.4.20-pre7-ac3. I seem to recall it working correctly on 2.4.19-ac1 (this was the version in which the ac did not get added by the patch). Anyway I have a tualatin PIII with a 512K L2 cache. I inserted the printk in setup.c that Alan asked for earlier in the thread and got three outputs (it's a two processor machine). I have edited everything but the printk output and the CPU:... lines. Things are working fine with the kernel command line cachesize=512. David Sep 30 12:56:02 janus kernel: Cache info byte: 01 Sep 30 12:56:02 janus kernel: Cache info byte: 02 Sep 30 12:56:02 janus kernel: Cache info byte: 03 Sep 30 12:56:02 janus kernel: Cache info byte: 00 Sep 30 12:56:02 janus kernel: Cache info byte: 00 Sep 30 12:56:02 janus last message repeated 6 times Sep 30 12:56:02 janus kernel: Cache info byte: 83 Sep 30 12:56:02 janus kernel: Cache info byte: 08 Sep 30 12:56:02 janus kernel: Cache info byte: 04 Sep 30 12:56:02 janus kernel: Cache info byte: 0C Sep 30 12:56:02 janus kernel: CPU: L1 I cache: 16K, L1 D cache: 16K Sep 30 12:56:02 janus kernel: CPU: L2 cache: 256K ........................................................... Sep 30 12:56:02 janus kernel: Cache info byte: 01 Sep 30 12:56:02 janus kernel: Cache info byte: 02 Sep 30 12:56:02 janus kernel: Cache info byte: 03 Sep 30 12:56:02 janus kernel: Cache info byte: 00 Sep 30 12:56:02 janus last message repeated 7 times Sep 30 12:56:02 janus kernel: Cache info byte: 83 Sep 30 12:56:02 janus kernel: Cache info byte: 08 Sep 30 12:56:02 janus kernel: Cache info byte: 04 Sep 30 12:56:02 janus kernel: Cache info byte: 0C Sep 30 12:56:02 janus kernel: CPU: L1 I cache: 16K, L1 D cache: 16K Sep 30 12:56:02 janus kernel: CPU: L2 cache: 256K ..................................................................................... Sep 30 12:56:02 janus kernel: Cache info byte: 01 Sep 30 12:56:02 janus kernel: Cache info byte: 02 Sep 30 12:56:02 janus kernel: Cache info byte: 03 Sep 30 12:56:02 janus kernel: Cache info byte: 00 Sep 30 12:56:02 janus last message repeated 7 times Sep 30 12:56:02 janus kernel: Cache info byte: 83 Sep 30 12:56:02 janus kernel: Cache info byte: 08 Sep 30 12:56:02 janus kernel: Cache info byte: 04 Sep 30 12:56:02 janus kernel: Cache info byte: 0C Sep 30 12:56:02 janus kernel: CPU: L1 I cache: 16K, L1 D cache: 16K Sep 30 12:56:02 janus kernel: CPU: L2 cache: 256K
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