Re: Fw: [PATCH] ia64: race flushing icache in do_no_page path

From: Nick Piggin <nickpiggin_at_yahoo.com.au>
Date: 2007-04-28 13:04:40
Nick Piggin wrote:

> What if you were to say remove all the PG_arch_1 code, and do something
> really simple like flush icache in flush_dcache_page? Would performance
> suffer horribly?

OIC, you need a virtual address to evict the icache, so you can't
flush at flush_dcache time? Or does ia64 have an instruction to
flush the whole icache? (it would be worth testing, to see how much
performance suffers).

-- 
SUSE Labs, Novell Inc.
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Received on Sat Apr 28 13:05:10 2007

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