linux-kernel - Re: [PATCH] vfio: Add an ioctl to reset the device

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Message-ID: <20110419220743.GO12133@x200.localdomain>
Date:	Tue, 19 Apr 2011 15:07:43 -0700
From:	Chris Wright <chrisw@...hat.com>
To:	Alex Williamson <alex.williamson@...hat.com>
Cc:	pugs@...e.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, qemu-devel@...gnu.org,
	chrisw@...hat.com, aafabbri@...co.com, dwang2@...co.com,
	benve@...co.com
Subject: Re: [PATCH] vfio: Add an ioctl to reset the device

* Alex Williamson (alex.williamson@...hat.com) wrote:
> When using VFIO to assign a device to a guest, we want to make sure
> the device is quiesced on VM reset to stop all DMA within the guest
> mapped memory.  Add an ioctl which just calls pci_reset_function()
> and returns whether it succeeds.

Shouldn't there be a reset when binding/unbinding vfio to/from a pci
device?
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