[PATCH v11 1/3] ARM: Add base support for ARMv7-M

[Uwe Kleine-König]

Hello Stephen,

On Wed, Apr 17, 2013 at 01:09:15PM -0700, Stephen Boyd wrote:
> On 04/17/13 09:14, Uwe Kleine-König wrote:
> > +__v7m_proc_info:
> > +	.long	0x000f0000		@ Required ID value
> > +	.long	0x000f0000		@ Mask for ID
> > +	.long   0			@ proc_info_list.__cpu_mm_mmu_flags
> > +	.long   0			@ proc_info_list.__cpu_io_mmu_flags
> > +	b	__v7m_setup		@ proc_info_list.__cpu_flush
> > +	.long	cpu_arch_name
> > +	.long	cpu_elf_name
> > +	.long	HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_IDIVT
> 
> Mainline is detecting HWCAP_IDIVT for v7 processors so you should be
> able to leave that part out.
I cannot confirm that. If I drop HWCAP_IDIVT here, /proc/cpuinfo changes
as follows:

-Features	: half thumb fastmult idivt 
+Features	: half thumb fastmult

Maybe I missed to call the respective function to autodetect that? I
don't consider that an issue big enough to justify another round for
this series. For me letting v11 hit mainline and fix detection later is
ok. I'll take a note to look into this, but if you want to come up with
a patch, don't hesitate :-)

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |