Messages in this thread | | | Date | Sat, 7 Jul 2007 06:57:12 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [BUGFIX][PATCH] DO flush icache before set_pte() on ia64. |
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On Fri, 6 Jul 2007 10:32:29 -0700 (PDT) Christoph Lameter <clameter@sgi.com> wrote:
> I am a bit worried about the performance impact of all this flushing? What > is the worst case scenario here? >
IMHO.... When a user set VM_EXEC to their anonymous memory intentionally and does many page faults.
I myself don't think (file's) page cache flushing is not so heavy work because PG_arch_1 guarantees that icache flushing occurs just once at the first read in the system.
Thanks, -Kame
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