linux-kernel - Re: X32 psABI status

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Message-ID: <AANLkTi=Ybzkp_NHom==M-kL+URWmmZ1LoWVP-EYMkN-j@mail.gmail.com>
Date:	Sun, 13 Feb 2011 05:45:21 -0800
From:	"H.J. Lu" <hjl.tools@...il.com>
To:	Florian Weimer <fw@...eb.enyo.de>
Cc:	x32-abi@...glegroups.com, GCC Development <gcc@....gnu.org>,
	GNU C Library <libc-alpha@...rceware.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: X32 psABI status

On Sun, Feb 13, 2011 at 12:48 AM, Florian Weimer <fw@...eb.enyo.de> wrote:
> * H. Peter Anvin:
>
>> On 02/12/2011 01:10 PM, Florian Weimer wrote:
>>> Why is the ia32 compatiblity kernel interface used?
>>
>> Because there is no way in hell we're designing in a second
>> compatibility ABI in the kernel (and it has to be a compatibility ABI,
>> because of the pointer size difference.)
>
> Actually, I'm wondering if you can do the translation in user space.
> There already are 32-on-64 implementations in existence, without
> kernel changes (recent Hotspot, LuaJIT, and probably some more).

Please check out the x32 kernel source and provide feedback.

-- 
H.J.
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