Messages in this thread | | | Date | Tue, 19 Sep 2006 00:18:51 +0200 | From | "Jesper Juhl" <> | Subject | Math-emu kills the kernel on Athlon64 X2 |
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Hi,
If I enable the math emulator in 2.6.18-rc7-git2 (only version I've tried this with) and then boot the kernel with "no387" then I only get as far as lilo's "...Booting the kernel." message and then the system hangs.
The kernel is a 32bit kernel build for K8 and my CPU is a Athlon64 X2 4400+
If I boot the same kernel without the "no387" option, then it boots and runs just fine, so it seems the math emulator code is lethal on newer CPU's :-(
Now, I need some help debugging this. The crash happens very early and doesn't result in anything printed to the screen (I guess it's too early to call printk()) - How on earth can I get a lead on what's going wrong? Any help would be appreciated.
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