From: u.kleine-koenig@pengutronix.de (Uwe Kleine-König)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3] ARM: zImage: add support for ARMv7-M
Date: Tue, 23 Sep 2014 23:22:54 +0200 [thread overview]
Message-ID: <20140923212254.GD3755@pengutronix.de> (raw)
In-Reply-To: <CAGhQ9VzQSphUoW+rSRdwHVrgrzEEcCoaTKYUA_BntK97zqdY7g@mail.gmail.com>
Hello Joachim,
On Tue, Sep 23, 2014 at 10:42:57PM +0200, Joachim Eastwood wrote:
> On 23 September 2014 21:32, Uwe Kleine-K?nig
> <u.kleine-koenig@pengutronix.de> wrote:
> >> diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
> >> index 413fd94b5301..cd27090625fe 100644
> >> --- a/arch/arm/boot/compressed/head.S
> >> +++ b/arch/arm/boot/compressed/head.S
> >> [...]
> >> @@ -114,7 +117,7 @@
> >> * sort out different calling conventions
> >> */
> >> .align
> >> - .arm @ Always enter in ARM state
> >> + AR_CLASS( .arm ) @ Always enter in ARM state for A/R classes
> > Semantically we don't want .arm when CPU_THUMBONLY is enabled. At least
> > currently this is equivalent with !AR_CLASS. Maybe this is worth to be
> > pointed out in a comment?
>
> Won't THUMBONLY always mean !AR_CLASS?
I don't know what ARM (the company) will invent in the future.
Today it's equivalent, yes.
> Do you have a particular comment in mind?
Something like:
Always enter in ARM state for CPUs that support the ARM ISA.
As of today (2014) that's exactly the members of the A and R
classes.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-K?nig |
Industrial Linux Solutions | http://www.pengutronix.de/ |
next prev parent reply other threads:[~2014-09-23 21:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-18 16:22 [PATCH] ARM: zImage: add support for ARMv7-M Joachim Eastwood
2014-09-18 16:22 ` [PATCH] arm: kbuild: make uImage entry an odd number on ARMv7-M Joachim Eastwood
2014-09-18 17:38 ` [PATCH] ARM: zImage: add support for ARMv7-M Arnd Bergmann
2014-09-18 18:34 ` Joachim Eastwood
2014-09-19 10:33 ` Catalin Marinas
2014-09-19 12:40 ` Joachim Eastwood
2014-09-19 13:35 ` Catalin Marinas
2014-09-19 17:22 ` [PATCH v2] " Joachim Eastwood
2014-09-23 16:33 ` Catalin Marinas
2014-09-23 17:41 ` Joachim Eastwood
2014-09-23 17:49 ` [PATCH v3] " Joachim Eastwood
2014-09-23 19:32 ` Uwe Kleine-König
2014-09-23 20:42 ` Joachim Eastwood
2014-09-23 21:22 ` Uwe Kleine-König [this message]
2014-09-27 11:25 ` [PATCH v4] " Joachim Eastwood
2014-09-28 10:18 ` Uwe Kleine-König
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