From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 4BB76B6F7F for ; Fri, 11 Nov 2011 00:40:27 +1100 (EST) Subject: Re: [RFC PATCH 08/17] powerpc/e500: Remove conditional "lwsync" substitution Mime-Version: 1.0 (Apple Message framework v1251.1) Content-Type: text/plain; charset=us-ascii From: Kumar Gala In-Reply-To: <1320883635-17194-9-git-send-email-Kyle.D.Moffett@boeing.com> Date: Thu, 10 Nov 2011 07:40:04 -0600 Message-Id: <3937191C-A735-4668-8E80-9FB4B35E2F63@kernel.crashing.org> References: <4E42AB6F.1050900@freescale.com> <1320883635-17194-9-git-send-email-Kyle.D.Moffett@boeing.com> To: Kyle Moffett Cc: Baruch Siach , Timur Tabi , linux-kernel@vger.kernel.org, Paul Gortmaker , Paul Mackerras , Scott Wood , linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Nov 9, 2011, at 6:07 PM, Kyle Moffett wrote: > As FreeScale e500 systems have different cacheline sizes from e500mc, = it > is basically impossible for the kernel to support both in a single > system image at present. >=20 > Given that one is SPE-float and the other is classic-float, they are = not > generally userspace-compatible either. >=20 > This patch updates the conditional to depend on whether the system is > actually targetting an "e500" or "e500mc" core and entirely removes = the > unused sync-to-lwsync-replacement on e500v1/e500v2 systems. >=20 > Signed-off-by: Kyle Moffett > --- > arch/powerpc/include/asm/synch.h | 16 ++++------------ > 1 files changed, 4 insertions(+), 12 deletions(-) Nak, we can run an e500mc in a mode that is compatible with e500v1/v2. = I see no reason to change the support we have there. - k=