linux-kernel - Re: [PATCH] aio: fix D-cache aliasing issues

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Date:	Sun, 17 Nov 2013 20:03:13 -0500
From:	John David Anglin <dave.anglin@...l.net>
To:	Helge Deller <deller@....de>
CC:	James Bottomley <James.Bottomley@...senPartnership.com>,
	linux-parisc@...r.kernel.org, Benjamin LaHaise <bcrl@...ck.org>,
	Simon Baatz <gmbnomis@...il.com>, linux-aio@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] aio: fix D-cache aliasing issues

On 17-Nov-13, at 6:47 PM, Helge Deller wrote:

> I only changed kunmap_parisc() to always call
> flush_kernel_dcache_page_addr(addr) - independend if we are on a  
> PA8800/8900
> CPU or not - which is what you proposed in your original mail.

In which case the flushes in clear_user_page() and copy_user_page()  
aren't needed.

Dave
--
John David Anglin	dave.anglin@...l.net



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