From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=35592 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1P4Bfc-0000sV-6m for qemu-devel@nongnu.org; Fri, 08 Oct 2010 08:03:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1P4Bfa-0002wW-RB for qemu-devel@nongnu.org; Fri, 08 Oct 2010 08:03:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38509) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1P4Bfa-0002wP-Kj for qemu-devel@nongnu.org; Fri, 08 Oct 2010 08:03:26 -0400 Message-ID: <4CAF08AB.4070205@redhat.com> Date: Fri, 08 Oct 2010 14:03:55 +0200 From: Kevin Wolf MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH] ide: set WCACHE supported in IDENTIFY data References: <20101004132941.GA26834@lst.de> In-Reply-To: <20101004132941.GA26834@lst.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Christoph Hellwig Cc: qemu-devel@nongnu.org Am 04.10.2010 15:29, schrieb Christoph Hellwig: > ATA does not only have the WCACHE enabled bit in identify word 85, but also > a WCACHE supported bit in word 82. While the Linux kernel is fine with the > latter at least hdparm also needs the former before correctly displaying > the cache settings. There's also a non-zero chance other operating systems > are more picky in their volatile write cache detection. > > Signed-off-by: Christoph Hellwig Thanks, applied to the block branch. Kevin