From: Al Viro <viro@ZenIV.linux.org.uk>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Andy Lutomirski <luto@amacapital.net>,
Linus Torvalds <torvalds@linux-foundation.org>,
X86 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-arch <linux-arch@vger.kernel.org>
Subject: Re: [PSEUDOPATCH] rename is_compat_task
Date: Mon, 7 Dec 2015 23:42:52 +0000 [thread overview]
Message-ID: <20151207234252.GI20997@ZenIV.linux.org.uk> (raw)
In-Reply-To: <11525805.FykVOSlruZ@wuerfel>
On Tue, Dec 08, 2015 at 12:16:51AM +0100, Arnd Bergmann wrote:
> As far as I know, x86 is the special case here, on all other architectures,
> this actually checks the task, and it's impossible to call a system call
> of the other kind.
sparc uses
ta 0x10
for 32bit syscalls and
ta 0x6d
for 64bit ones. And yes, the same process can call both just fine.
next prev parent reply other threads:[~2015-12-07 23:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-07 23:12 [PSEUDOPATCH] rename is_compat_task Andy Lutomirski
2015-12-07 23:16 ` Arnd Bergmann
2015-12-07 23:20 ` Andy Lutomirski
2015-12-07 23:42 ` Al Viro [this message]
2015-12-08 4:36 ` Ingo Molnar
2015-12-08 4:49 ` Al Viro
2015-12-08 5:01 ` Ingo Molnar
2015-12-08 5:15 ` Al Viro
2015-12-08 5:52 ` Andy Lutomirski
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