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From: Ian Munsie <imunsie@au1.ibm.com>
To: Josh Boyer <jwboyer@gmail.com>
Cc: paulus <paulus@samba.org>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Introduce support for little endian PowerPC
Date: Wed, 06 Oct 2010 12:04:40 +1100	[thread overview]
Message-ID: <1286325582-sup-5109@au1.ibm.com> (raw)
In-Reply-To: <AANLkTikHcoccu-WGtSOSdkwU6Tw_An_VFkUcEoY==8=c@mail.gmail.com>

Hi Josh,

Excerpts from Josh Boyer's message of Fri Oct 01 21:36:35 +1000 2010:
> Aside from my general "uh, why?" stance, I'm very very hesitant to
> integrate anything in the kernel that doesn'.t have released patches
> on the toolchain side.

As I said the kernel can be built today with an unpatched toolchain
targetted at powerpcle-elf, the new powerpcle-linux target is mainly
required for userspace, but yes I want to get those patches out as soon
as possible.

> Also, which uClibc?  The old and crusty uClibc that uses the horrible
> linuxthreads, or the somewhat less crusty that just switched to NPTL
> (which hasn't been verified on normal PowerPC that I recall).  Why not
> use glibc...

As Ben said this was for a proof of concept and changing uClibc to
support it was quite literally a one line change.

I've been using stable packages as my base on the toolchain side of
things (gcc 4.4.4, binutils 2.20.1 and uClibc 0.9.31) so uClibc is still
using linuxthreads since they haven't released a version with NPTL yet.

> I'm not meeting to detract here, but the Kconfig should be dependent
> on && BROKEN until the above is fixed.

Good point.


Cheers,
-Ian

      parent reply	other threads:[~2010-10-06  1:04 UTC|newest]

Thread overview: 52+ 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  9:18   ` Kumar Gala
2010-10-01 11:28     ` Josh Boyer
2010-10-01 12:09       ` Benjamin Herrenschmidt
2010-10-01 11:40   ` Josh Boyer
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  7:13   ` Geert Uytterhoeven
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 ` [PATCH 05/18] powerpc: Wire up 44x little endian boot for remaining 44x targets Ian Munsie
2010-10-01 11:27   ` Josh Boyer
2010-10-06  1:28     ` Ian Munsie
2010-10-06  1:55       ` Josh Boyer
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  7:06 ` [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
2010-10-03  3:15   ` Grant Likely
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 ` [PATCH 12/18] powerpc 44x: Handle TLB miss regardless of endianness Ian Munsie
2010-10-01  7:06 ` [PATCH 13/18] powerpc 44x: Make DCR endianness agnostic Ian Munsie
2010-10-01  7:06 ` [PATCH 14/18] powerpc, of_serial: Endianness issues setting up the serial ports Ian Munsie
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 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 ` [PATCH 17/18] net: Fix endianess issues in IBM newemac driver Ian Munsie
2010-10-01  7:06 ` [PATCH 18/18] powerpc: Fix jiffies variable on little endian Ian Munsie
2010-10-01  9:02 ` Introduce support for little endian PowerPC Kumar Gala
2010-10-01 11:30   ` Josh Boyer
2010-10-01 11:55     ` Gary Thomas
2010-10-01 12:15       ` Benjamin Herrenschmidt
2010-10-01 12:37         ` Gary Thomas
2010-10-01 12:14     ` Benjamin Herrenschmidt
2010-10-01 16:20       ` Michel Dänzer
2010-10-01 20:50         ` Benjamin Herrenschmidt
2010-10-04 10:30           ` Michel Dänzer
2010-10-04 22:50             ` Benjamin Herrenschmidt
2010-10-01 17:59       ` Kumar Gala
2010-10-01 20:51         ` Benjamin Herrenschmidt
2010-10-01 22:03           ` Olof Johansson
2010-10-01 22:28             ` Benjamin Herrenschmidt
2010-10-07 16:25             ` Hollis Blanchard
2010-10-01 11:36 ` Josh Boyer
2010-10-01 12:21   ` Benjamin Herrenschmidt
2010-10-06  1:04   ` Ian Munsie [this message]

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