linux-next: omap2plus_defconfig not building
Anand Gadiyar
gadiyar at ti.com
Tue Oct 19 08:14:58 EDT 2010
On 10/19/2010 5:07 PM, Catalin Marinas wrote:
> On Tue, 2010-10-19 at 11:18 +0100, Anand Gadiyar wrote:
>> Commit ba1b9be5cd in linux-next (ARM: Add SWP/SWPB emulation for ARMv7
>> processors (v5)) introduced arch/arm/kernel/swp_emulate.c. This file
>> gets compiled when the omap2plus_defconfig is built - the
>> omap2plus_defconfig builds OMAP2420, OMAP2430, OMAP3 and OMAP4 in one
>> image, and has CPU_V6 and CPU_V7 both enabled.
>
> This patch should fix it:
>
Yes, it does. I've not yet boot tested on omap2; will try
that out in a bit.
OMAP3 and OMAP4 still don't boot on next if support for both are
compiled together, however that's a separate issue to debug.
Thanks!
- Anand
>
> ARM: Do not enable SWP emulation if CPU_V6&& CPU_V7
>
> From: Catalin Marinas<catalin.marinas at arm.com>
>
> This option uses LDREXB/STREXB to emulate SWPB but these instructions
> are not supported on all the ARMv6 processors.
>
> Reported-by: Anand Gadiyar<gadiyar at ti.com>
> Signed-off-by: Catalin Marinas<catalin.marinas at arm.com>
> Cc: Leif Lindholm<Leif.Lindholm at arm.com>
> ---
> arch/arm/mm/Kconfig | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
> index 8493ed0..5195d61 100644
> --- a/arch/arm/mm/Kconfig
> +++ b/arch/arm/mm/Kconfig
> @@ -638,7 +638,7 @@ config ARM_THUMBEE
>
> config SWP_EMULATE
> bool "Emulate SWP/SWPB instructions"
> - depends on CPU_V7
> + depends on CPU_V7&& !CPU_V6
> select HAVE_PROC_CPU if PROC_FS
> default y if SMP
> help
>
>
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