Re: [RFC/PATCH, 2/4] readX_check() performance evaluation

[Andi Kleen]

On Wed, 28 Jan 2004 11:33:33 -0800 (PST)
Linus Torvalds <torvalds@xxxxxxxx> wrote:

> For example, if checking for an error involves actually reading a value 
> from a bridge register, then that implies some _serious_ amount of 
> serialization and external CPU stuff.

Which is _extremly_ hard to do from an MCE handler ...

(currently all our MCE handlers are buggy because they can deadlock on the 
printk lock) 

-Andi
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