From: Roland Dreier <rdreier@cisco.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
"Mike Miller (OS Dev)" <mikem@beardog.cca.cpqcorp.net>,
Michal Piotrowski <michal.k.k.piotrowski@gmail.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [2/4] 2.6.22-rc3: known regressions
Date: Thu, 31 May 2007 16:17:00 -0700 [thread overview]
Message-ID: <adalkf4oa6r.fsf@cisco.com> (raw)
In-Reply-To: <alpine.LFD.0.98.0705311610440.26602@woody.linux-foundation.org> (Linus Torvalds's message of "Thu, 31 May 2007 16:12:02 -0700 (PDT)")
What about the changes to fix the order that MSI-X irqs are returned
in (iirc, list_add had to be changed to list_add_tail in a couple of
places). Without that change, multiple MSI-X interrupts seem to be
broken: the kernel programs the MSI-X table in the opposite order that
it gives the irq numbers to the driver. The net effect is that if I
request, say, 3 MSI-X interrupts for a device, then when the device
generates the first interrupt, the driver thinks it generated the
third interrupt, and things go fairly haywire.
- R.
next prev parent reply other threads:[~2007-05-31 23:17 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <465C188F.9000900@googlemail.com>
2007-05-29 12:52 ` [3/4] 2.6.22-rc3: known regressions Michal Piotrowski
2007-05-29 21:47 ` [PATCH] NOHZ: prevent multiplication overflow - stop timer for huge timeouts Thomas Gleixner
2007-05-29 23:02 ` David Miller
2007-05-31 2:33 ` [3/4] 2.6.22-rc3: known regressions Linus Torvalds
2007-05-31 4:51 ` Antonino A. Daplas
2007-05-31 5:54 ` Tero Roponen
2007-05-31 6:04 ` [PATCH] neofb: Fix pseudo_palette array overrun in neofb_setcolreg Antonino A. Daplas
2007-06-05 11:09 ` Antonino A. Daplas
2007-06-05 11:34 ` [PATCH] [RESEND] " Antonino A. Daplas
2007-05-29 12:53 ` [4/4] 2.6.22-rc3: known regressions Michal Piotrowski
2007-06-09 11:38 ` Mauro Carvalho Chehab
2007-05-29 12:56 ` [2/4] " Michal Piotrowski
2007-05-29 15:01 ` Stephen Hemminger
2007-05-31 2:22 ` Linus Torvalds
2007-05-31 22:08 ` Mike Miller (OS Dev)
2007-05-31 22:22 ` Linus Torvalds
2007-05-31 22:39 ` Mike Miller (OS Dev)
2007-05-31 22:50 ` Andrew Morton
2007-05-31 23:12 ` Linus Torvalds
2007-05-31 23:17 ` Roland Dreier [this message]
2007-05-31 23:34 ` Andrew Morton
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