From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Karel Zak <kzak@redhat.com>,
Arjan van de Ven <arjan@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [kerneloops] regression in 2.6.27 wrt "lock_page" and the "hwclock" program
Date: Mon, 13 Oct 2008 16:40:00 +0100 [thread overview]
Message-ID: <20081013164000.04fab4c2@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20081013152633.GA6523@elte.hu>
> The warning occurs because hwclock uses this dubious sequence of
> code to run "atomic" code:
Nobody should be using old versions of hwclock that do this as they are
not SMP safe.
> So instead just enable interrupts in the pagefault path unconditionally
> if we come from user-space, and handle the fault.
This should definitely also log an error to get users to remove that
rubbish from their PC
next prev parent reply other threads:[~2008-10-13 15:43 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-05 0:44 Arjan van de Ven
2008-10-05 4:52 ` Andrew Morton
2008-10-05 15:11 ` Arjan van de Ven
2008-10-05 17:27 ` Andrew Morton
2008-10-05 17:38 ` Arjan van de Ven
2008-10-12 20:00 ` Karel Zak
2008-10-12 20:16 ` Linus Torvalds
2008-10-13 14:55 ` Arjan van de Ven
2008-10-14 21:04 ` Karel Zak
2008-10-13 15:26 ` Ingo Molnar
2008-10-13 15:40 ` Alan Cox [this message]
2008-10-13 15:44 ` Linus Torvalds
2008-10-13 16:02 ` Ingo Molnar
2008-10-13 16:08 ` Linus Torvalds
2008-10-13 16:21 ` Ingo Molnar
2008-10-12 19:46 ` Karel Zak
2008-10-05 18:18 ` Linus Torvalds
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