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

Nick Piggin
2007-04-28T03:04:40Z

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.