From: Nicholas Miell <nmiell@comcast.net>
To: Ulrich Drepper <drepper@redhat.com>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] prototypes for *at functions & typo fix
Date: Wed, 18 Jan 2006 22:37:41 -0800 [thread overview]
Message-ID: <1137652661.2842.7.camel@entropy> (raw)
In-Reply-To: <43CF2CA3.5020001@redhat.com>
On Wed, 2006-01-18 at 22:07 -0800, Ulrich Drepper wrote:
> Nicholas Miell wrote:
> > AMD64 renumbered all the syscalls for optimal cacheline usage or
> > something stupid like that. I suppose the x86 emulation on AMD64 kernels
> > could share the i386 table, but then _NR_foo will have a different value
> > depending on context, and that'll just get confusing.
>
> Yes, the syscall numbers are quite different, especially because x86 has
> all syscalls, even the obsolete ones.
>
> But what I mean is that the __NR_ia32_* macros in
> asm-x86-64/ia32_unistd.h aren't used anywhere in the kernel. And in
> userland the asm-x86/unistd.h file is used when compiling x86 apps. At
> least this is how the kernel headers for userlevel use should be set up.
Ah, that makes sense. Actually, a few of them are used (sigreturn,
rt_sigreturn, and restart_syscall), but I suppose those could be defined
locally.
--
Nicholas Miell <nmiell@comcast.net>
prev parent reply other threads:[~2006-01-19 6:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-19 4:29 [PATCH] prototypes for *at functions & typo fix Ulrich Drepper
2006-01-19 4:37 ` Andrew Morton
2006-01-19 4:56 ` Nicholas Miell
2006-01-19 6:07 ` Ulrich Drepper
2006-01-19 6:37 ` Nicholas Miell [this message]
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