From: agraf@suse.de (Alexander Graf)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm64: Enable CONFIG_COMPAT also for 64k page size
Date: Fri, 05 Dec 2014 00:37:59 +0100 [thread overview]
Message-ID: <5480F057.9010203@suse.de> (raw)
In-Reply-To: <20141204182049.GB7749@arm.com>
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
WARNING: multiple messages have this Message-ID (diff)
From: Alexander Graf <agraf@suse.de>
To: Will Deacon <will.deacon@arm.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
Michael Matz <matz@suse.de>
Subject: Re: [PATCH] arm64: Enable CONFIG_COMPAT also for 64k page size
Date: Fri, 05 Dec 2014 00:37:59 +0100 [thread overview]
Message-ID: <5480F057.9010203@suse.de> (raw)
In-Reply-To: <20141204182049.GB7749@arm.com>
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
next prev parent reply other threads:[~2014-12-04 23:37 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-04 15:46 [PATCH] arm64: Enable CONFIG_COMPAT also for 64k page size Alexander Graf
2014-12-04 15:46 ` Alexander Graf
2014-12-04 18:18 ` Laura Abbott
2014-12-04 18:18 ` Laura Abbott
2014-12-04 18:20 ` Will Deacon
2014-12-04 18:20 ` Will Deacon
2014-12-04 23:37 ` Alexander Graf [this message]
2014-12-04 23:37 ` Alexander Graf
2014-12-08 13:47 ` Michael Matz
2014-12-08 13:47 ` Michael Matz
2014-12-06 17:23 ` Alexander Graf
2014-12-06 17:23 ` Alexander Graf
2014-12-08 10:10 ` Will Deacon
2014-12-08 10:10 ` Will Deacon
2014-12-08 10:47 ` Alexander Graf
2014-12-08 10:47 ` Alexander Graf
2015-03-11 11:24 ` Alexander Graf
2015-03-11 11:24 ` Alexander Graf
2015-03-11 12:43 ` Andreas Schwab
2015-03-11 12:43 ` Andreas Schwab
2015-03-11 12:47 ` Arnd Bergmann
2015-03-11 12:47 ` Arnd Bergmann
2015-03-11 13:08 ` Alexander Graf
2015-03-11 13:08 ` Alexander Graf
2015-03-11 13:35 ` Andreas Schwab
2015-03-11 13:35 ` Andreas Schwab
2015-03-11 13:51 ` Arnd Bergmann
2015-03-11 13:51 ` Arnd Bergmann
2015-03-11 13:57 ` Andreas Schwab
2015-03-11 13:57 ` Andreas Schwab
2015-03-11 15:44 ` Alexander Graf
2015-03-11 15:44 ` Alexander Graf
2015-03-11 16:09 ` Andreas Schwab
2015-03-11 16:09 ` Andreas Schwab
2015-03-11 18:11 ` Alexander Graf
2015-03-11 18:11 ` Alexander Graf
2015-03-12 9:07 ` [PATCH] arm64: fix implementation of mmap2 compat syscall Andreas Schwab
2015-03-12 9:07 ` Andreas Schwab
2015-03-16 14:16 ` [PATCH] arm64: Enable CONFIG_COMPAT also for 64k page size Christopher Covington
2015-03-16 14:16 ` Christopher Covington
2015-03-16 14:19 ` Arnd Bergmann
2015-03-16 14:19 ` Arnd Bergmann
2014-12-04 21:15 ` Olof Johansson
2014-12-04 21:15 ` Olof Johansson
2014-12-04 23:41 ` Alexander Graf
2014-12-04 23:41 ` Alexander Graf
2014-12-04 23:48 ` Olof Johansson
2014-12-04 23:48 ` Olof Johansson
2014-12-05 10:39 ` Arnd Bergmann
2014-12-05 10:39 ` Arnd Bergmann
2014-12-05 11:05 ` Catalin Marinas
2014-12-05 11:05 ` Catalin Marinas
2014-12-05 12:24 ` Arnd Bergmann
2014-12-05 12:24 ` Arnd Bergmann
2014-12-05 12:31 ` Catalin Marinas
2014-12-05 12:31 ` Catalin Marinas
2015-02-18 13:40 ` Christopher Covington
2015-02-18 13:40 ` Christopher Covington
2014-12-05 12:06 ` Alexander Graf
2014-12-05 12:06 ` Alexander Graf
2014-12-05 11:14 ` Catalin Marinas
2014-12-05 11:14 ` Catalin Marinas
2014-12-05 11:35 ` Will Deacon
2014-12-05 11:35 ` Will Deacon
2015-03-13 4:44 ` Jon Masters
2015-03-13 4:44 ` Jon Masters
2014-12-05 16:35 ` Liviu Dudau
2014-12-05 16:35 ` Liviu Dudau
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5480F057.9010203@suse.de \
--to=agraf@suse.de \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.