From: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
To: sjhill@mips.com
Cc: linux-mips@linux-mips.org, ralf@linux-mips.org, douglas@mips.com,
chris@mips.com
Subject: Re: [PATCH 01/10] MIPS: Add core files for MIPS SEAD-3 development platform.
Date: Tue, 08 May 2012 13:01:04 +0900 [thread overview]
Message-ID: <4FA89A80.6060407@renesas.com> (raw)
In-Reply-To: <31E06A9FC96CEC488B43B19E2957C1B8011469208F@exchdb03.mips.com>
Hi Steven-san,
On 5/8/2012 5:16 AM, Hill, Steven wrote:
> I will certainly remove CONFIG_CPU_HAS_LLSC, thank you. I attempted to
> enable 'cpu_has_clo_clz' for SEAD-3, but it breaks my microMIPS-only
> kernel builds. Specifically, since microMIPS LL/SC instructions do
> not have 16-bit address offsets, in the '__cmpxchg_asm' macro function
> I get constraint errors because then the assembler has to use the %LO
> register in order to calculate the offset address. I am going to hold
> off on enabling the option until after the 3.5 release and then
> revisit for a solution. Thank you.
Got it, find no problems with your plan. It seems there must be other
issues with optimization on microMIPS-only kernels :-)
--
Shinya Kuribayashi
Renesas Electronics
next prev parent reply other threads:[~2012-05-08 4:01 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-07 16:48 [PATCH 00/10] Add support MIPS SEAD-3 Development Platform Steven J. Hill
2012-04-07 16:48 ` [PATCH 01/10] MIPS: Add core files for MIPS SEAD-3 development platform Steven J. Hill
2012-04-10 1:03 ` Shinya Kuribayashi
2012-05-07 20:16 ` Hill, Steven
2012-05-08 4:01 ` Shinya Kuribayashi [this message]
2012-05-08 11:16 ` Maciej W. Rozycki
2012-05-08 20:38 ` Hill, Steven
2012-05-11 7:37 ` Maciej W. Rozycki
2012-04-07 16:48 ` [PATCH 02/10] MIPS: Changes to configuration files for SEAD-3 platform Steven J. Hill
2012-04-10 1:19 ` Shinya Kuribayashi
2012-04-07 16:48 ` [PATCH 03/10] MIPS: Add support for the M14K core Steven J. Hill
2012-04-07 16:48 ` [PATCH 04/10] MIPS: Add micro-assembler support for 'ins' and 'ext' instructions Steven J. Hill
2012-05-01 0:26 ` Maciej W. Rozycki
2012-05-01 0:51 ` David Daney
2012-05-07 5:18 ` Maciej W. Rozycki
2012-05-07 13:33 ` Hill, Steven
2012-05-01 0:49 ` David Daney
2012-04-07 16:48 ` [PATCH 05/10] MIPS: GIC interrupt changes for M14K and SEAD-3 support Steven J. Hill
2012-04-07 16:48 ` [PATCH 06/10] MIPS: Code formatting fixes Steven J. Hill
2012-04-07 16:48 ` [PATCH 07/10] MIPS: Add support for early serial debug and LCD device on SEAD-3 Steven J. Hill
2012-04-07 16:48 ` [PATCH 08/10] MIPS: MIPS32R2 optimisations for pipeline stalls and code size Steven J. Hill
2012-04-07 16:48 ` [PATCH 09/10] cobalt_lcdfb: LCD panel framebuffer support for SEAD-3 platform Steven J. Hill
2012-04-07 16:48 ` [PATCH 10/10] usb: host: mips: sead3: USB Host controller " Steven J. Hill
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