From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
Gregory Cl??ment <gregory.clement@free-electrons.com>,
Lior Amsalem <alior@marvell.com>,
linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org
Subject: Re: Issue with the emulated PCI bridge implementation
Date: Thu, 2 Jan 2014 17:26:56 -0700 [thread overview]
Message-ID: <20140103002656.GA12098@obsidianresearch.com> (raw)
In-Reply-To: <20131226165241.2c50b244@skate>
On Thu, Dec 26, 2013 at 04:52:41PM +0100, Thomas Petazzoni wrote:
> Here is an implementation of this idea, tested to work with an e1000e
> card, with the driver modified to do a few read/write to the I/O
> region. What do you think about it?
This seems reasonable, the only down side is that a stray read to an
unused portion of the Linux IO mapping will lock the machine instead
of getting a page fault - however I don't see that as a blocker.
Regards,
Jason
next prev parent reply other threads:[~2014-01-03 0:27 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-26 15:05 Issue with the emulated PCI bridge implementation Thomas Petazzoni
2013-12-26 15:52 ` Thomas Petazzoni
2014-01-02 21:41 ` Bjorn Helgaas
2014-01-03 0:26 ` Jason Gunthorpe [this message]
2014-01-03 12:22 ` Arnd Bergmann
2014-01-03 18:44 ` Jason Gunthorpe
2014-01-03 19:03 ` Arnd Bergmann
2014-01-03 19:01 ` Thomas Petazzoni
2014-01-03 19:04 ` Arnd Bergmann
2014-01-03 19:10 ` Thomas Petazzoni
2014-01-03 19:13 ` Arnd Bergmann
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