From: Arnd Bergmann <arnd@arndb.de>
To: Richard Weinberger <richard@nod.at>
Cc: Rob Herring <robh@kernel.org>, Lee Jones <lee.jones@linaro.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [PATCH 1/2] asm-generic/io.h: provide default ioremap/iounmap for !HAS_IOMEM
Date: Wed, 30 Mar 2016 12:03:52 +0200 [thread overview]
Message-ID: <6282729.XLLXSxbzQJ@wuerfel> (raw)
In-Reply-To: <56FB8AC1.4070209@nod.at>
On Wednesday 30 March 2016 10:13:53 Richard Weinberger wrote:
>
> I fully understand your point of view. COMPILE_TEST is a monster that
> can do the heavy lifting for you, but monsters also have claws and fangs.
>
> Having COMPILE_TEST having depend on !UML works for me. But don't
> we have other archs without io mem? At least a few years ago while
> porting nandsim to UML I found s390 that lacks of io mem too.
s390 gained IOMEM support when they started having PCI attachments.
arch/score selects NO_IOMEM, though they do in fact use MMIO, and
I'm sure their architecture has lots of other problems with build
testing that nobody cares about.
arch/tile can select NO_IOMEM when PCI is disabled, they might
care about this, though I think they also have other build-time
issues.
> Maybe we depend COMPILE_TEST on HAS_IOMEM?
That sounds fine with me as well.
Arnd
next prev parent reply other threads:[~2016-03-30 10:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-29 18:23 [PATCH 1/2] asm-generic/io.h: provide default ioremap/iounmap for !HAS_IOMEM Rob Herring
2016-03-29 18:23 ` [PATCH 2/2] mfd: remove dependency on HAS_IOMEM Rob Herring
2016-03-30 4:23 ` Krzysztof Kozlowski
2016-03-29 19:37 ` [PATCH 1/2] asm-generic/io.h: provide default ioremap/iounmap for !HAS_IOMEM Arnd Bergmann
2016-03-29 19:50 ` Richard Weinberger
2016-03-29 20:13 ` Rob Herring
2016-03-30 7:50 ` Richard Weinberger
2016-03-30 8:04 ` Arnd Bergmann
2016-03-30 8:04 ` [uml-devel] " Arnd Bergmann
2016-03-30 8:13 ` Richard Weinberger
2016-03-30 8:13 ` Richard Weinberger
2016-03-30 10:03 ` Arnd Bergmann [this message]
2016-03-30 13:29 ` Rob Herring
2016-03-30 13:51 ` Arnd Bergmann
2016-03-30 20:08 ` Geert Uytterhoeven
2016-03-30 20:35 ` Richard Weinberger
2016-03-30 20:38 ` Arnd Bergmann
2016-03-30 21:20 ` Rob Herring
2016-03-31 8:39 ` Geert Uytterhoeven
2016-03-30 4:19 ` Krzysztof Kozlowski
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