linux-kernel - Re: pci_get_dev_by_id() from interrupt handlers

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Message-ID: <20100421100528.GG31537@amd.com>
Date:	Wed, 21 Apr 2010 12:05:28 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	Greg KH <greg@...ah.com>
CC:	Joerg Roedel <joro@...tes.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: pci_get_dev_by_id() from interrupt handlers

On Tue, Apr 20, 2010 at 10:52:02AM -0700, Greg KH wrote:
> On Tue, Apr 20, 2010 at 07:35:59PM +0200, Joerg Roedel wrote:

> Why not do the whole thing in an interrupt task as the whole thing
> sounds like something that shouldn't be done in interrupt context,
> right?  Now that we have this type of functionality, we should take
> advantage of it :)

Ok, I think I move the IOMMU interrupt handling to a tasklet.

> Eventually, notifying KVM isn't something that you want to do from
> interrupt context anyway, right?

On the KVM side it is probably nothing more than setting a request bit.
But lets see how this could be done :-)

Thanks,

	Joerg


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