From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfgang Denk Date: Tue, 25 Oct 2011 09:25:59 +0200 Subject: [U-Boot] [PATCH v3 4/6] ext2: Cache line aligned partial sector bounce buffer In-Reply-To: <1318463764-28244-5-git-send-email-robotboy@chromium.org> References: <1318463764-28244-1-git-send-email-robotboy@chromium.org> <1318463764-28244-5-git-send-email-robotboy@chromium.org> Message-ID: <20111025072559.3CBC51408EA7@gemini.denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Dear Anton Staaf, In message <1318463764-28244-5-git-send-email-robotboy@chromium.org> you wrote: > Currently, if a device read request is done that does not begin or end > on a sector boundary a stack allocated bounce buffer is used to perform > the read, and then just the part of the sector that is needed is copied > into the users buffer. This stack allocation can mean that the bounce > buffer will not be aligned to the dcache line size. This is a problem > when caches are enabled because unaligned cache invalidates are not > safe. > > This patch uses ALLOC_CACHE_ALIGN_BUFFER to create a stack allocated > cache line size aligned bounce buffer. > > Signed-off-by: Anton Staaf > Acked-by: Mike Frysinger > Cc: Lukasz Majewski > Cc: Mike Frysinger > Cc: Dave Liu > Cc: Andy Fleming > Cc: Albert ARIBAUD > --- > fs/ext2/dev.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) Applied, thanks. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de If something is different, it's either better or worse, and usually both. - Larry Wall