| 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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