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From: tom.leiming@gmail.com (Ming Lei)
To: linux-arm-kernel@lists.infradead.org
Subject: [Question] flush_dcache_page() need to flush icache?
Date: Tue, 30 Apr 2013 16:16:16 +0800	[thread overview]
Message-ID: <CACVXFVMz3jLEPDYFM-_S_t5TiqikVSRiKf9cBNocH3QhVexwZg@mail.gmail.com> (raw)

Hi,

Looks flush_dcache_page() need to deal with both dcache alias and I/D
cache coherency, but set_pte_at() has already run __sync_icache_dcache()
to make I/D cache coherency in the path of executable page fault.

So could the flushing icache be removed in flush_dcache_page()?

If it is yes for the above question, could the flushing dcache in case of
vipt nonaliasing be removed in flush_dcache_page() too?

Maybe they are stupid questions, sorry in advance.

Thanks,
-- 
Ming Lei

             reply	other threads:[~2013-04-30  8:16 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-30  8:16 Ming Lei [this message]
2013-04-30  9:05 ` [Question] flush_dcache_page() need to flush icache? Catalin Marinas
2013-04-30 10:02   ` Ming Lei
2013-04-30 15:26     ` Catalin Marinas
2013-05-01  8:11       ` Ming Lei
2013-05-01  8:22         ` Catalin Marinas
2013-05-01  8:53           ` Ming Lei

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