From: Ingo Molnar
Date: Thu Oct 06 2005 - 03:11:00 EST
* Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> Found the problem. You're using a 64 bit machine and flags in the
> acpi code is defined as u32 and not unsigned long. Ingo's tests put
> some checks in the flags at the MSBs and these are being truncated.
ahh ... I would not be surprised if this caused actual problems on x64
in the upstream kernel too: using save_flags() over u32 will corrupt a
word on the stack ...
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