From: shiraz.hashim@st.com (Shiraz Hashim)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 0/3] Updated Cortex-M3 series
Date: Fri, 3 Aug 2012 20:47:40 +0530 [thread overview]
Message-ID: <20120803151740.GZ2005@localhost.localdomain> (raw)
In-Reply-To: <20120803145035.GJ2626@pengutronix.de>
Hi Uwe,
On Fri, Aug 03, 2012 at 10:50:35PM +0800, Uwe Kleine-K?nig wrote:
> On Fri, Aug 03, 2012 at 02:07:08PM +0000, Arnd Bergmann wrote:
> > Is it possible to build a NOMMU kernel that runs on both
> > ARMv7-A amd ARMv7-M, in other words is ARMv7-M compatible with
> > ARMv7-A (or ARMv7-R for that matter) if you don't use the MMU?
>
> the instructions to enable and disable irqs are different, so
> we'd need another indirection at least there. Also the whole
> exception model is different. So I'd say it's too different to
> target for a common kernel for the A, R and M profiles.
We are using standard Linux kernel (v3.3) with MMU disabled on
a Cortex R4 system.
--
regards
Shiraz
next prev parent reply other threads:[~2012-08-03 15:17 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 10:10 [PATCH v6 0/3] Updated Cortex-M3 series Uwe Kleine-König
2012-08-03 10:10 ` [PATCH v6 1/3] ARM: make cr_alignment read-only #ifndef CONFIG_CPU_CP15 Uwe Kleine-König
2012-08-03 10:10 ` [PATCH v6 2/3] Cortex-M3: Add base support for Cortex-M3 Uwe Kleine-König
2012-08-03 10:10 ` [PATCH v6 3/3] Cortex-M3: Add support for exception handling Uwe Kleine-König
2012-08-03 14:07 ` [PATCH v6 0/3] Updated Cortex-M3 series Arnd Bergmann
2012-08-03 14:50 ` Uwe Kleine-König
2012-08-03 15:17 ` Shiraz Hashim [this message]
2012-08-04 13:57 ` Uwe Kleine-König
2012-08-03 15:37 ` Jonathan Austin
2012-08-16 20:29 ` Uwe Kleine-König
2012-09-21 19:00 ` Uwe Kleine-König
2012-09-25 14:47 ` Jonathan Austin
2012-09-25 15:00 ` Uwe Kleine-König
2012-09-26 18:03 ` Will Deacon
2012-09-26 19:27 ` Uwe Kleine-König
2012-10-17 8:14 ` Uwe Kleine-König
2012-10-08 15:43 ` new branch for linux-next [Was: [PATCH v6 0/3] Updated Cortex-M3 series] Uwe Kleine-König
2012-10-08 15:47 ` Russell King - ARM Linux
2012-10-11 22:51 ` Stephen Rothwell
2012-10-15 23:08 ` Stephen Rothwell
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