From mboxrd@z Thu Jan 1 00:00:00 1970 From: minchan.kim@gmail.com (Minchan Kim) Date: Fri, 16 Jul 2010 09:44:29 +0900 Subject: Question of kmap_atomic In-Reply-To: References: Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Resend with fixing the mail address. On Fri, Jul 16, 2010 at 9:41 AM, Minchan Kim wrote: > I am stuck with looking at ARM's kmap_atomic. > I am not familiar with ARM cache model. > As I look the code, ARM seems to have a VIPT aliasing model. > > Before Nicolas's 17ebba1fe, kmap_atomic always calls kmap_high_get to > prevent aliasing problem of 7929eb9cf64 regardless of VIVT and VIPT. > > But the patch made it to not call kmap_high_get when VIPT-aliasing > model in CONFIG_DEBUG_HIGHMEM. > Doesn't it cause aliasing problem as 7929eb9cf64 says, again? > > -- > Kind regards, > Minchan Kim > -- Kind regards, Minchan Kim