From: Russell King <rmk@arm.linux.org.uk>
To: Paul Mackerras <paulus@samba.org>
Cc: Pete Zaitcev <zaitcev@redhat.com>,
schwidefsky@de.ibm.com, linux-arch@vger.kernel.org,
akpm@osdl.org, jakub@redhat.com
Subject: Re: FUTEX_CMP_REQUEUE and 6-argument syscall
Date: Fri, 4 Jun 2004 08:44:40 +0100 [thread overview]
Message-ID: <20040604084440.B22925@flint.arm.linux.org.uk> (raw)
In-Reply-To: <16575.50024.908291.283284@cargo.ozlabs.ibm.com>; from paulus@samba.org on Fri, Jun 04, 2004 at 10:33:44AM +1000
On Fri, Jun 04, 2004 at 10:33:44AM +1000, Paul Mackerras wrote:
> Pete Zaitcev writes:
>
> > I'm curious if any other architecture was caught out by this.
>
> Six is currently the limit on ppc and ppc64. It would be possible to
> increase it to 7 fairly easily or 8 with a bit more trouble. Beyond
> that we would start getting arguments on the stack.
Six is also the current limit on ARM, and we have the possibility
to go to 7 with some more stack mangling. However, 8 is more
problematical - I suspect at that point we'll be in the arguments
on user stack territory.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/
2.6 Serial core
prev parent reply other threads:[~2004-06-04 7:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-03 18:02 FUTEX_CMP_REQUEUE and 6-argument syscall Pete Zaitcev
2004-06-03 18:13 ` Ralf Baechle
2004-06-03 21:26 ` David S. Miller
2004-06-03 23:27 ` Pete Zaitcev
2004-06-04 0:33 ` Paul Mackerras
2004-06-04 7:44 ` Russell King [this message]
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