Re: [BUGFIX]{PATCH] flush icache on ia64 take2
From: Zoltan Menyhart
Date: Thu Jul 19 2007 - 11:19:24 EST
KAMEZAWA Hiroyuki wrote:
Hmm...but the current code flushes the page. just do it in "lazy" way.
much difference ?
I agree the current code flushes the I-cache for all kinds of file
systems (for PTEs with the exec bit on).
The error is that it does it after the PTE is written.
In addition, I wanted to optimize it to gain a few %.
Apparently this idea is not much welcome.
I can agree that flushing the I-cache (if the architecture requires it)
before setting the PTE eliminates the error.
Thanks,
Zoltan
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