From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] ARM: remove unnecessary flush of anon pages in flush(_kernel)_dcache_page()
Date: Thu, 27 Sep 2012 13:23:28 +0100 [thread overview]
Message-ID: <20120927122327.GA26188@arm.com> (raw)
In-Reply-To: <1348695659-27603-3-git-send-email-gmbnomis@gmail.com>
On Wed, Sep 26, 2012 at 10:40:59PM +0100, Simon Baatz wrote:
> On non-aliasing VIPT D-caches, there is no need to flush the kernel
> mapping of anon pages in flush_kernel_dcache_page() and
> flush_dcache_page() directly. If the page is mapped as executable
> later, the necessary D/I-cache flush will be done in
> __sync_icache_dcache().
>
> Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Russell King <linux@arm.linux.org.uk>
I would suggest you make this patch the first one rather than
introducing __flush_kernel_dcache_page() and subsequently replacing its
code.
--
Catalin
next prev parent reply other threads:[~2012-09-27 12:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-26 21:40 [PATCH 0/2] fix and improvement of flush(_kernel)_dcache_page() Simon Baatz
2012-09-26 21:40 ` [PATCH V2 1/2] ARM: Handle user space mapped pages in flush_kernel_dcache_page Simon Baatz
2012-09-26 21:40 ` [PATCH 2/2] ARM: remove unnecessary flush of anon pages in flush(_kernel)_dcache_page() Simon Baatz
2012-09-27 12:23 ` Catalin Marinas [this message]
2012-09-27 17:35 ` Simon Baatz
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