From: Al Viro <viro@ZenIV.linux.org.uk>
To: Ingo Molnar <mingo@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
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>,
David Miller <davem@davemloft.net>
Subject: Re: [PSEUDOPATCH] rename is_compat_task
Date: Tue, 8 Dec 2015 05:15:05 +0000 [thread overview]
Message-ID: <20151208051505.GL20997@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20151208050148.GA3968@gmail.com>
On Tue, Dec 08, 2015 at 06:01:48AM +0100, Ingo Molnar wrote:
> Hm, so if Sparc has no notion of compat-ness of the system call then how does it
> implement runtime compat checks, such as AUDIT_ARCH et al?
Badly. Things like compat_sys_ioctl() vs. ioctl() work (we use different
arrays of function pointers in 32bit and 64bit traps), but anything
dynamic assumes that things match the task. Not that we had a lot of
such dynamic checks, actually...
next prev parent reply other threads:[~2015-12-08 5:15 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
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 [this message]
2015-12-08 5:52 ` Andy Lutomirski
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