From: Manfred Spraul <manfred@colorfullife•com>
To: Jeff Garzik <jgarzik@pobox•com>
Cc: Yinghai Lu <yhlu.kernel@gmail•com>,
Ayaz Abdulla <aabdulla@nvidia•com>,
nedev <netdev@vger•kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger•kernel.org>,
David Miller <davem@davemloft•net>,
Andrew Morton <akpm@linux-foundation•org>
Subject: Re: MSI interrupts and disable_irq
Date: Sun, 07 Oct 2007 18:54:45 +0200 [thread overview]
Message-ID: <47090F55.3020800@colorfullife.com> (raw)
In-Reply-To: <4707CCF1.8080909@pobox.com>
Jeff Garzik wrote:
>
> Interested parties should try the forcedeth patches I just posted :)
>
The patches look good, but I would still prefer to understand why the
current implementation causes crashes before rewriting everything.
I've just noticed that netpoll_send_skb() calls ->hard_start_xmit() and
->poll() within local_irq_save().
Thus it seems that spin_lock_irqsave() must be used in the poll() and
hard_start_xmit() callbacks, at least in nics that support
POLL_CONTROLLER :-(
--
Manfred
next prev parent reply other threads:[~2007-10-07 16:55 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-27 20:42 MSI interrupts and disable_irq Ayaz Abdulla
2007-09-29 2:47 ` Jeff Garzik
2007-09-29 3:08 ` Stephen Hemminger
2007-10-05 22:12 ` Eric W. Biederman
2007-10-06 6:23 ` Yinghai Lu
2007-10-06 17:43 ` Yinghai Lu
2007-10-06 17:59 ` Jeff Garzik
2007-10-07 16:54 ` Manfred Spraul [this message]
2007-10-13 9:30 ` Manfred Spraul
2007-10-14 5:59 ` Yinghai Lu
2007-10-14 7:15 ` Manfred Spraul
2007-10-14 19:55 ` Yinghai Lu
2007-10-14 21:47 ` Benjamin Herrenschmidt
2007-10-14 23:15 ` Yinghai Lu
2007-10-14 23:36 ` Benjamin Herrenschmidt
2007-10-15 22:17 ` Jeff Garzik
2007-10-16 17:23 ` Yinghai Lu
2007-10-16 17:39 ` Jeff Garzik
2007-10-16 17:59 ` Yinghai Lu
2007-10-16 19:44 ` Jeff Garzik
2007-10-16 18:01 ` Yinghai Lu
2007-10-17 19:43 ` Manfred Spraul
2007-10-02 19:03 ` Manfred Spraul
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