From: "David S. Miller" <davem@redhat.com>
To: davidm@hpl.hp.com, davidm@napali.hpl.hp.com
Cc: ak@muc.de, sfr@canb.auug.org.au, torvalds@transmeta.com,
linux-kernel@vger.kernel.org, anton@samba.org,
schwidefsky@de.ibm.com, ralf@gnu.org, willy@debian.org
Subject: Re: [PATCH] Start of compat32.h (again)
Date: Wed, 27 Nov 2002 21:29:10 -0800 (PST) [thread overview]
Message-ID: <20021127.212910.45156979.davem@redhat.com> (raw)
In-Reply-To: <15844.64663.864253.832815@napali.hpl.hp.com>
From: David Mosberger <davidm@napali.hpl.hp.com>
Date: Wed, 27 Nov 2002 09:10:47 -0800
You conveniently cut of the important part of my message:
Remember that most compatibility syscalls go straight to the
64-bit syscall handlers. You're probably hosed anyhow if a
64-bit syscall returns, say, 0x1ffffffff, but on ia64 I'd
still rather play it safe and consistently have all
compatibility syscalls return a 64-bit sign-extended value
like all other syscall handlers ("least surprise" principle).
If the return path is different for the 32-bit syscalls,
which is the point I was talking about, then that code path
can sign extend, truncate, or whatever the upper 32-bits of
the return value.
You need to do things differently in the 32-bit return path anyways.
I didn't miss the content of your email at all David, quite the
opposite in fact.
next prev parent reply other threads:[~2002-11-28 5:24 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-27 7:42 [PATCH] Start of compat32.h (again) Stephen Rothwell
2002-11-27 7:58 ` David S. Miller
2002-11-27 13:00 ` Stephen Rothwell
2002-11-28 5:27 ` David S. Miller
2002-11-27 18:51 ` Linus Torvalds
2002-11-28 5:34 ` David S. Miller
2002-11-27 8:00 ` David Mosberger
2002-11-27 8:06 ` David S. Miller
2002-11-27 8:29 ` Andi Kleen
2002-11-27 8:46 ` David Mosberger
2002-11-27 9:01 ` Andi Kleen
2002-11-27 9:57 ` David S. Miller
2002-11-27 17:10 ` David Mosberger
2002-11-28 5:29 ` David S. Miller [this message]
2002-11-27 12:49 ` Alan Cox
2002-11-30 20:34 ` Ralf Baechle
2002-11-27 17:18 ` Linus Torvalds
2002-11-28 5:22 ` Stephen Rothwell
2002-11-28 5:26 ` David S. Miller
2002-11-29 2:36 ` Stephen Rothwell
2002-12-01 18:54 ` Linus Torvalds
2002-12-02 4:46 ` David S. Miller
2002-12-02 4:57 ` Stephen Rothwell
2002-12-02 6:17 ` David S. Miller
2002-12-02 7:39 ` Richard Henderson
2002-12-02 7:44 ` David S. Miller
2002-12-02 7:59 ` Ralf Baechle
2002-12-02 8:01 ` David S. Miller
2002-12-04 11:22 ` Pavel Machek
2002-12-05 21:04 ` David S. Miller
2002-11-28 5:31 ` David S. Miller
2002-11-29 4:45 ` [PATCH] 32 bit consolidation 1/Many (was: [PATCH] Start of compat32.h (again)) Stephen Rothwell
2002-11-29 4:52 ` [PATCH] 32 bit consolidation 2/Many Stephen Rothwell
[not found] <Pine.LNX.4.44.0212011047440.12964-100000@home.transmeta.com.suse.lists.linux.kernel>
[not found] ` <1038804400.4411.4.camel@rth.ninka.net.suse.lists.linux.kernel>
2002-12-02 8:13 ` [PATCH] Start of compat32.h (again) Andi Kleen
2002-12-02 8:28 ` David S. Miller
2002-12-02 9:07 ` Andi Kleen
2002-12-02 9:36 ` Jakub Jelinek
2002-12-02 17:01 ` Mikael Pettersson
2002-12-02 10:16 ` David S. Miller
2002-12-04 11:19 ` Pavel Machek
2002-12-05 21:06 ` David S. Miller
2002-12-05 21:21 ` Pavel Machek
2002-12-05 21:22 ` David S. Miller
2002-12-05 21:32 ` Pavel Machek
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