From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org, paulus@samba.org,
Ian Munsie <imunsie@au1.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: Introduce support for little endian PowerPC
Date: Sat, 02 Oct 2010 06:51:55 +1000 [thread overview]
Message-ID: <1285966315.2463.141.camel@pasglop> (raw)
In-Reply-To: <BBD78246-343E-4A96-9E55-3E40AD628C0B@kernel.crashing.org>
On Fri, 2010-10-01 at 12:59 -0500, Kumar Gala wrote:
> I'm not against it, and I agree some of the patches seem like good
> clean up. I'm concerned about this bit rotting pretty quickly.
Maybe. Most of it doesn't seem to be that bit-rottable.
The changes to the asm stuff in misc_32.S for example are functions we
never ever touch once written (libgcc replacements) so I don't see them
rotting more with LE support than they did with BE :-)
What might rot is that we might introduce new LE breakage, true, and I
suppose it's going to be to some extent my job to at least every now and
then shoot that thing on a 44x to see if it still flies.
Cheers,
Ben.
WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: Josh Boyer <jwboyer@gmail.com>,
paulus@samba.org, linuxppc-dev@lists.ozlabs.org,
Ian Munsie <imunsie@au1.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: Introduce support for little endian PowerPC
Date: Sat, 02 Oct 2010 06:51:55 +1000 [thread overview]
Message-ID: <1285966315.2463.141.camel@pasglop> (raw)
In-Reply-To: <BBD78246-343E-4A96-9E55-3E40AD628C0B@kernel.crashing.org>
On Fri, 2010-10-01 at 12:59 -0500, Kumar Gala wrote:
> I'm not against it, and I agree some of the patches seem like good
> clean up. I'm concerned about this bit rotting pretty quickly.
Maybe. Most of it doesn't seem to be that bit-rottable.
The changes to the asm stuff in misc_32.S for example are functions we
never ever touch once written (libgcc replacements) so I don't see them
rotting more with LE support than they did with BE :-)
What might rot is that we might introduce new LE breakage, true, and I
suppose it's going to be to some extent my job to at least every now and
then shoot that thing on a 44x to see if it still flies.
Cheers,
Ben.
next prev parent reply other threads:[~2010-10-01 20:52 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-01 7:05 Introduce support for little endian PowerPC Ian Munsie
2010-10-01 7:05 ` [PATCH 01/18] powerpc: Add ability to build little endian kernels Ian Munsie
2010-10-01 7:05 ` Ian Munsie
2010-10-01 9:18 ` Kumar Gala
2010-10-01 9:18 ` Kumar Gala
2010-10-01 11:28 ` Josh Boyer
2010-10-01 11:28 ` Josh Boyer
2010-10-01 12:09 ` Benjamin Herrenschmidt
2010-10-01 12:09 ` Benjamin Herrenschmidt
2010-10-01 11:40 ` Josh Boyer
2010-10-01 11:40 ` Josh Boyer
2010-10-01 12:22 ` Benjamin Herrenschmidt
2010-10-01 12:22 ` Benjamin Herrenschmidt
2010-10-01 7:05 ` [PATCH 02/18] powerpc: Add CROSSBE_COMPILE to build big endian boot wrapper Ian Munsie
2010-10-01 7:05 ` Ian Munsie
2010-10-01 7:13 ` Geert Uytterhoeven
2010-10-01 7:13 ` Geert Uytterhoeven
2010-10-01 7:19 ` Ian Munsie
2010-10-01 7:19 ` Ian Munsie
2010-10-01 7:05 ` [PATCH 03/18] powerpc: Support parsing a little endian kernel from zImage wrapper Ian Munsie
2010-10-01 7:05 ` [PATCH 04/18] powerpc: Allow taishan platform to boot a little endian kernel Ian Munsie
2010-10-01 7:05 ` Ian Munsie
2010-10-01 7:05 ` [PATCH 05/18] powerpc: Wire up 44x little endian boot for remaining 44x targets Ian Munsie
2010-10-01 11:27 ` Josh Boyer
2010-10-01 11:27 ` Josh Boyer
2010-10-06 1:28 ` Ian Munsie
2010-10-06 1:28 ` Ian Munsie
2010-10-06 1:55 ` Josh Boyer
2010-10-06 1:55 ` Josh Boyer
2010-10-06 2:10 ` Sean MacLennan
2010-10-06 2:10 ` Sean MacLennan
2010-10-01 7:05 ` [PATCH 06/18] powerpc 44x: Set E bit in TLBs and PTEs when CPU is in little endian mode Ian Munsie
2010-10-01 7:05 ` Ian Munsie
2010-10-01 7:06 ` [PATCH 07/18] powerpc: Use generic bitops for little endian bitmap operations Ian Munsie
2010-10-01 7:06 ` [PATCH 08/18] powerpc: Include the appropriate endianness header Ian Munsie
2010-10-01 7:06 ` [PATCH 09/18] powerpc: Support device tree regardless of CPU endianness Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-03 3:15 ` Grant Likely
2010-10-03 3:15 ` Grant Likely
2010-10-03 6:22 ` Benjamin Herrenschmidt
2010-10-03 6:22 ` Benjamin Herrenschmidt
2010-10-01 7:06 ` [PATCH 10/18] powerpc: Support endian agnostic MMIO Ian Munsie
2010-10-01 7:06 ` [PATCH 11/18] powerpc: Make assembly endian agnostic when accessing 64bit values Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-01 7:06 ` [PATCH 12/18] powerpc 44x: Handle TLB miss regardless of endianness Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-01 7:06 ` [PATCH 13/18] powerpc 44x: Make DCR endianness agnostic Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-01 7:06 ` [PATCH 14/18] powerpc, of_serial: Endianness issues setting up the serial ports Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-07 23:23 ` Grant Likely
2010-10-07 23:23 ` Grant Likely
2010-10-07 23:23 ` Grant Likely
2010-10-01 7:06 ` [PATCH 15/18] mtd: Fix endianness issues from device tree Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-01 19:29 ` Artem Bityutskiy
2010-10-01 19:29 ` Artem Bityutskiy
2010-10-01 19:29 ` Artem Bityutskiy
2010-10-01 7:06 ` [PATCH 16/18] powerpc: Fix endianness issues in alignment handler Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-01 7:06 ` [PATCH 17/18] net: Fix endianess issues in IBM newemac driver Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-01 7:06 ` [PATCH 18/18] powerpc: Fix jiffies variable on little endian Ian Munsie
2010-10-01 7:06 ` Ian Munsie
2010-10-01 9:02 ` Introduce support for little endian PowerPC Kumar Gala
2010-10-01 9:02 ` Kumar Gala
2010-10-01 11:30 ` Josh Boyer
2010-10-01 11:30 ` Josh Boyer
2010-10-01 11:55 ` Gary Thomas
2010-10-01 11:55 ` Gary Thomas
2010-10-01 12:15 ` Benjamin Herrenschmidt
2010-10-01 12:15 ` Benjamin Herrenschmidt
2010-10-01 12:37 ` Gary Thomas
2010-10-01 12:37 ` Gary Thomas
2010-10-01 12:14 ` Benjamin Herrenschmidt
2010-10-01 12:14 ` Benjamin Herrenschmidt
2010-10-01 16:20 ` Michel Dänzer
2010-10-01 16:20 ` Michel Dänzer
2010-10-01 20:50 ` Benjamin Herrenschmidt
2010-10-01 20:50 ` Benjamin Herrenschmidt
2010-10-04 10:30 ` Michel Dänzer
2010-10-04 10:30 ` Michel Dänzer
2010-10-04 22:50 ` Benjamin Herrenschmidt
2010-10-04 22:50 ` Benjamin Herrenschmidt
2010-10-01 17:59 ` Kumar Gala
2010-10-01 17:59 ` Kumar Gala
2010-10-01 20:51 ` Benjamin Herrenschmidt [this message]
2010-10-01 20:51 ` Benjamin Herrenschmidt
2010-10-01 22:03 ` Olof Johansson
2010-10-01 22:03 ` Olof Johansson
2010-10-01 22:28 ` Benjamin Herrenschmidt
2010-10-01 22:28 ` Benjamin Herrenschmidt
2010-10-07 16:25 ` Hollis Blanchard
2010-10-07 16:25 ` Hollis Blanchard
2010-10-01 11:36 ` Josh Boyer
2010-10-01 11:36 ` Josh Boyer
2010-10-01 12:21 ` Benjamin Herrenschmidt
2010-10-01 12:21 ` Benjamin Herrenschmidt
2010-10-06 1:04 ` Ian Munsie
2010-10-06 1:04 ` Ian Munsie
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