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Re: 64-bit and N32 kernel interfaces

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: 64-bit and N32 kernel interfaces
From: Kjeld Borch Egevang <kjelde@mips.com>
Date: Thu, 5 Sep 2002 12:15:40 +0200 (MEST)
Cc: Jun Sun <jsun@mvista.com>, "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>, <linux-mips@linux-mips.org>
In-reply-to: <20020904204038.D1121@linux-mips.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
On Wed, 4 Sep 2002, Ralf Baechle wrote:

...
> Several approach to solve that problem.  Adding another 1000 entries - which
> will cost 8000 bytes of memory that will be mostly zeros.  Having wrappers
> for each function that do the appropriate argument and result convertion
> is another.  etc.

Ralf, that's not true. In our current 64-bit kernel we have 234 entries 
for N64 which uses 8*234 = 1872 bytes. N32 has 241 entries using 1928 
bytes. Even in an embedded environment that's not a lot of memory.


/Kjeld

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