From: Greg KH <gregkh@suse.de>
To: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: gregkh@suse.de, linux-pci@atrey.karlin.mff.cuni.cz,
linux-kernel@vger.kernel.org, mj@ucw.cz,
openib-general@openib.org
Subject: Re: [PATCH] disable MSI for AMD-8131
Date: Mon, 28 Mar 2005 14:58:18 -0800 [thread overview]
Message-ID: <20050328225818.GA4919@kroah.com> (raw)
In-Reply-To: <20050306202845.GE8486@mellanox.co.il>
On Sun, Mar 06, 2005 at 10:28:45PM +0200, Michael S. Tsirkin wrote:
> Greg, Martin,
>
> The AMD-8131 I/O APIC (device id 1022:7450/7451) does not support message
> signalled interrupts. Thus, if a device driver attempts to enable msi,
> it will suceed, but interrupts are not actually delivered to the cpu.
> The Nforce chipsets do not seem to have this limitation.
> AMD confirmed that MSI mode is unsupported with this APIC.
>
> The following patch adds a flag to pci quirks to detect this and disable msi.
>
> Please let me know what do you think.
>
> Signed-off-by: Michael S. Tsirkin <mst@mellano.co.il>
Looks good, applied, thanks.
greg k-h
prev parent reply other threads:[~2005-03-28 23:03 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-06 20:28 [PATCH] disable MSI for AMD-8131 Michael S. Tsirkin
2005-03-28 22:58 ` Greg KH [this message]
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