Messages in this thread |  | | Date | Sun, 16 Sep 2001 10:08:34 +0200 | From | Jan Niehusmann <> | Subject | Re: Athlon: Try this (was: Re: Athlon bug stomping #2) |
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On Sun, Sep 16, 2001 at 09:21:49AM +0200, Steffen Persvold wrote: > I also have a question; if "movntq; sfence" type of memory copy can cause data > corruption in kernel space, it can in theory also do so in user space right ? > So, if I'm right this bug could also be on machines running a 2.2 kernel with > userspace programs using 3DNow (or SSE even) instructions.
Sure. I did crash a computer running an old kernel (not 2.2 but 2.4.0-testX without the optimised fast_copy_page) from a non-privileged user space program containing the same code as the optimised fast_copy_page.
Jan
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