linux-kernel - Re: [PATCH] arm64: Enable CONFIG

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Message-ID: <5480F057.9010203@suse.de>
Date:	Fri, 05 Dec 2014 00:37:59 +0100
From:	Alexander Graf <agraf@...e.de>
To:	Will Deacon <will.deacon@....com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Michael Matz <matz@...e.de>
Subject: Re: [PATCH] arm64: Enable CONFIG_COMPAT also for 64k page size



On 04.12.14 19:20, Will Deacon wrote:
> On Thu, Dec 04, 2014 at 03:46:33PM +0000, Alexander Graf wrote:
>> With binutils 2.25 the default alignment for 32bit arm sections changed to
>> have everything 64k aligned. Armv7 binaries built with this binutils version
>> run successfully on an arm64 system.
>>
>> Since effectively there is now the chance to run armv7 code on arm64 even
>> with 64k page size, it doesn't make sense to block people from enabling
>> CONFIG_COMPAT on those configurations.
> 
> Is there a distro available that is built with a recent enough binutils for
> this? I'd really like to run our regression tests to check that page-size
> assumptions don't exist for things like shm.

I don't have a full distribution for you yet, but we'll start to switch
to the 2.25 branch soon.

Michael, what are you plans on when a first armv7 Factory build based on
2.25 would be available?


Alex
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