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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.

  parent reply	other threads:[~2015-12-07 23:42 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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