From: Kumar Gala <galak@kernel.crashing.org>
To: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Baruch Siach <baruch@tkos.co.il>,
Timur Tabi <B04825@freescale.com>,
Scott Wood <scottwood@freescale.com>,
Paul Gortmaker <paul.gortmaker@windriver.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>
Subject: Re: [RFC PATCH 08/17] powerpc/e500: Remove conditional "lwsync" substitution
Date: Thu, 10 Nov 2011 07:40:04 -0600 [thread overview]
Message-ID: <3937191C-A735-4668-8E80-9FB4B35E2F63@kernel.crashing.org> (raw)
In-Reply-To: <1320883635-17194-9-git-send-email-Kyle.D.Moffett@boeing.com>
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.
>
> Given that one is SPE-float and the other is classic-float, they are not
> generally userspace-compatible either.
>
> 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.
>
> Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
> ---
> 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
next prev parent reply other threads:[~2011-11-10 13:40 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4E42AB6F.1050900@freescale.com>
2011-11-10 0:03 ` [RFC PATCH 00/17] powerpc/e500: separate e500 from e500mc Kyle Moffett
2011-11-10 13:59 ` Kumar Gala
2011-11-10 16:17 ` Moffett, Kyle D
2011-11-10 16:30 ` Kumar Gala
2011-11-10 16:54 ` Scott Wood
2011-11-11 0:38 ` Moffett, Kyle D
2011-11-11 4:40 ` Benjamin Herrenschmidt
2011-11-15 2:32 ` [RFC PATCH 0/2] powerpc: CPU cache op cleanup Kyle Moffett
2011-11-15 22:29 ` Benjamin Herrenschmidt
2011-11-15 22:45 ` Moffett, Kyle D
2011-11-15 23:46 ` Benjamin Herrenschmidt
2011-11-16 0:25 ` Moffett, Kyle D
2011-11-16 4:40 ` Paul Mackerras
2011-11-16 20:52 ` Moffett, Kyle D
2011-11-15 2:32 ` [RFC PATCH 1/2] powerpc: Remove duplicate cacheable_memcpy/memzero functions Kyle Moffett
2011-11-15 22:31 ` Benjamin Herrenschmidt
2011-11-15 2:36 ` [RFC PATCH 00/17] powerpc/e500: separate e500 from e500mc Moffett, Kyle D
2011-11-15 2:41 ` Tabi Timur-B04825
2011-11-15 3:40 ` Kyle Moffett
2011-11-15 22:41 ` Benjamin Herrenschmidt
2011-11-10 0:06 ` Kyle Moffett
2011-11-10 0:06 ` [RFC PATCH 01/17] powerpc/mpic: Fix bogus CONFIG_BOOKE conditional Kyle Moffett
2011-11-10 13:33 ` Kumar Gala
2011-11-10 0:07 ` [RFC PATCH 02/17] powerpc: Split up PHYS_64BIT config option to fix "select" issues Kyle Moffett
2011-11-10 13:36 ` Kumar Gala
2011-11-10 14:04 ` Timur Tabi
2011-11-10 16:31 ` Moffett, Kyle D
2011-11-10 16:50 ` Timur Tabi
2011-11-11 4:50 ` Benjamin Herrenschmidt
2011-11-11 13:12 ` Tabi Timur-B04825
2011-11-10 0:07 ` [RFC PATCH 03/17] fsl_rio: Remove FreeScale e500 conditionals Kyle Moffett
2011-11-10 0:07 ` [RFC PATCH 04/17] powerpc: Allow multiple machine-check handlers Kyle Moffett
2011-11-10 13:37 ` Kumar Gala
2011-11-10 16:33 ` Moffett, Kyle D
2011-11-10 0:07 ` [RFC PATCH 05/17] powerpc/e500: Remove unused "default e500" from CPU table Kyle Moffett
2011-11-10 0:07 ` [RFC PATCH 06/17] powerpc/e500: Split FreeScale e500v1/v2 and e500mc config options Kyle Moffett
2011-11-10 0:07 ` [RFC PATCH 07/17] powerpc/e200: Rename CONFIG_E200 => CONFIG_FSL_E200 Kyle Moffett
2011-11-10 0:07 ` [RFC PATCH 08/17] powerpc/e500: Remove conditional "lwsync" substitution Kyle Moffett
2011-11-10 13:40 ` Kumar Gala [this message]
2011-11-10 16:31 ` Scott Wood
2011-11-10 16:42 ` Kumar Gala
2011-11-10 17:03 ` Scott Wood
2011-11-10 20:27 ` Moffett, Kyle D
2011-11-10 20:34 ` Kumar Gala
2011-11-11 4:45 ` Benjamin Herrenschmidt
2011-11-11 4:43 ` Benjamin Herrenschmidt
2011-11-10 0:07 ` [RFC PATCH 09/17] powerpc/e500: Split idle handlers for e500v1/v2 and e500mc Kyle Moffett
2011-11-10 0:07 ` [RFC PATCH 10/17] powerpc/e500: Fix up the last references to CONFIG_PPC_E500MC Kyle Moffett
2011-11-10 0:07 ` [RFC PATCH 11/17] powerpc/e500: Use the correct assembler flags for e500mc and e5500 Kyle Moffett
2011-11-10 0:07 ` [RFC PATCH 12/17] powerpc/e500: Separate e500mc CPU table entries from e500v1/e500v2 Kyle Moffett
2011-11-10 0:07 ` [RFC PATCH 13/17] powerpc/e500: Add a new CONFIG_FSL_E5500 option for the e5500 Kyle Moffett
2011-11-10 13:46 ` Kumar Gala
2011-11-10 16:49 ` Scott Wood
2011-11-10 0:07 ` [RFC PATCH 14/17] powerpc/e500: Don't make kgdb use e500v1/e500v2 registers on e500mc Kyle Moffett
2011-11-10 16:46 ` Scott Wood
2011-11-10 0:07 ` [RFC PATCH 15/17] powerpc/e500: Fix up all remaining code uses of CONFIG_E500 Kyle Moffett
2011-11-10 0:07 ` [RFC PATCH 16/17] powerpc/e500: Make __setup_cpu_{e200,e500,e500mc,e5500} optional Kyle Moffett
2011-11-10 16:47 ` Scott Wood
2011-11-10 18:52 ` Kumar Gala
2011-11-10 0:07 ` [RFC PATCH 17/17] powerpc/e500: Finally remove "CONFIG_E500" Kyle Moffett
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