linux-kernel - Re: Segmentation fault on all golang executables

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Message-ID: <5399FB68.2000507@zytor.com>
Date:	Thu, 12 Jun 2014 12:11:36 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Andy Lutomirski <luto@...capital.net>
CC:	Kui Zhang <kuizhang@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Segmentation fault on all golang executables

On 06/12/2014 11:51 AM, Andy Lutomirski wrote:
> On Thu, Jun 12, 2014 at 11:48 AM, H. Peter Anvin <hpa@...ux.intel.com> wrote:
>> On 06/12/2014 11:42 AM, Andy Lutomirski wrote:
>>>
>>> Note that my hack will build a buggy vdso on big-endian hosts.  Is
>>> there a way to convert host -> BE yet?
>>>
>>
>> Yes, use <tools/be_byteshift.h>.
> 
> What should I rebase on for that?  And wasn't there some header that
> was supposed to choose the right include file given the host runtime?
> 
> Also, I meant host -> LE, of course, but that should be trivial.
> 

No need to rebase.  My patchset proposes replacing
<tools/be_byteshift.h> and <tools/le_byteshift.h> by a unified
<tools/unaligned.h> but that is not important for this purpose.

host -> LE uses <tools/le_byteshift.h> which is already in use by
vdso2c.  Use put_unaligned_leXX().

	-hpa


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