From: David Miller <davem@davemloft.net>
To: matthew@wil.cx
Cc: jbarnes@virtuousgeek.org, david.vrabel@csr.com,
linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de
Subject: Re: PCI: MSI interrupts masked using prohibited method
Date: Wed, 16 Jul 2008 13:35:29 -0700 (PDT) [thread overview]
Message-ID: <20080716.133529.131285284.davem@davemloft.net> (raw)
In-Reply-To: <20080716195853.GL25255@parisc-linux.org>
From: Matthew Wilcox <matthew@wil.cx>
Date: Wed, 16 Jul 2008 13:58:53 -0600
> David's clearly talking about devices which don't support mask bits.
> For these devices, we call
> msi_set_enable(entry->dev, !flag);
>
> which turns off the PCI_MSI_FLAGS_ENABLE bit. I'm not sure I see the
> bit in the PCI spec that says devices are then allowed to ignore the
> Interrupt Disable bit in the device control register, but I concede such
> devices may be out there.
Keep in mind also the msi intx disable bug we already have
workarounds for. It shows that there are tons of questionable
behavior in this area.
next prev parent reply other threads:[~2008-07-16 20:35 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-24 10:46 David Vrabel
2008-06-25 21:20 ` Jesse Barnes
2008-06-27 12:17 ` David Vrabel
2008-06-27 17:07 ` Jesse Barnes
2008-07-16 19:43 ` Jesse Barnes
2008-07-16 19:58 ` Matthew Wilcox
2008-07-16 20:35 ` David Miller [this message]
2008-07-17 12:16 ` Krzysztof Halasa
2008-07-17 12:43 ` Matthew Wilcox
2008-07-17 13:14 ` David Vrabel
2008-07-17 15:39 ` Matthew Wilcox
2008-07-17 15:58 ` Thomas Gleixner
2008-07-17 16:11 ` Matthew Wilcox
2008-07-17 17:04 ` Thomas Gleixner
2008-07-17 16:56 ` Matthew Wilcox
[not found] ` <487F7DFA.10101@csr.com>
2008-07-17 19:48 ` Matthew Wilcox
2008-07-18 10:33 ` David Vrabel
2008-07-22 13:56 ` Michal Schmidt
2008-07-22 17:52 ` Jesse Barnes
2008-07-23 13:02 ` Michal Schmidt
2008-07-25 13:29 ` Michal Schmidt
2008-07-25 13:42 ` Matthew Wilcox
2008-07-25 13:53 ` Michal Schmidt
2008-07-25 15:51 ` Matthew Wilcox
2008-07-28 9:54 ` Michal Schmidt
2008-07-25 16:37 ` David Vrabel
2008-07-25 16:56 ` Matthew Wilcox
2008-07-25 19:12 ` Jesse Barnes
2008-07-28 9:59 ` Michal Schmidt
2008-07-28 22:04 ` Jesse Barnes
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20080716.133529.131285284.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=david.vrabel@csr.com \
--cc=jbarnes@virtuousgeek.org \
--cc=linux-kernel@vger.kernel.org \
--cc=matthew@wil.cx \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®