From: Avi Kivity <avi@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Tom Lyon <pugs@cisco.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
chrisw@sous-sol.org, joro@8bytes.org, hjk@linutronix.de,
gregkh@suse.de, aafabbri@cisco.com, scofeldm@cisco.com
Subject: Re: [PATCH] VFIO driver: Non-privileged user level PCI drivers
Date: Tue, 01 Jun 2010 11:10:45 +0300 [thread overview]
Message-ID: <4C04C085.1030107@redhat.com> (raw)
In-Reply-To: <20100531171007.GA6516@redhat.com>
On 05/31/2010 08:10 PM, Michael S. Tsirkin wrote:
> On Mon, May 31, 2010 at 02:50:29PM +0300, Avi Kivity wrote:
>
>> On 05/30/2010 05:53 PM, Michael S. Tsirkin wrote:
>>
>>> So what I suggested is failing any kind of access until iommu
>>> is assigned.
>>>
>>>
>> So, the kernel driver must be aware of the iommu. In which case it may
>> as well program it.
>>
> It's a kernel driver anyway. Point is that
> the *device* driver is better off not programming iommu,
> this way we do not need to reprogram it for each device.
>
The device driver is in userspace. It can't program the iommu. What
the patch proposes is that userspace tells vfio about the needed
mappings, and vfio programs the iommu.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-06-01 8:11 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-28 23:07 [PATCH] VFIO driver: Non-privileged user level PCI drivers Tom Lyon
2010-05-28 23:36 ` Randy Dunlap
2010-05-28 23:56 ` Randy Dunlap
2010-05-29 11:55 ` Arnd Bergmann
2010-05-29 12:16 ` Avi Kivity
2010-05-30 12:19 ` Michael S. Tsirkin
2010-05-30 12:27 ` Avi Kivity
2010-05-30 12:49 ` Michael S. Tsirkin
2010-05-30 13:01 ` Avi Kivity
2010-05-30 13:03 ` Michael S. Tsirkin
2010-05-30 13:13 ` Avi Kivity
2010-05-30 14:53 ` Michael S. Tsirkin
2010-05-31 11:50 ` Avi Kivity
2010-05-31 17:10 ` Michael S. Tsirkin
2010-06-01 8:10 ` Avi Kivity [this message]
2010-06-01 9:55 ` Michael S. Tsirkin
2010-06-01 10:28 ` Avi Kivity
2010-06-01 10:46 ` Michael S. Tsirkin
2010-06-01 12:41 ` Avi Kivity
2010-06-02 9:45 ` Joerg Roedel
2010-06-02 9:49 ` Avi Kivity
2010-06-02 10:04 ` Joerg Roedel
2010-06-02 10:09 ` Michael S. Tsirkin
2010-06-02 11:21 ` Avi Kivity
2010-06-02 16:53 ` Chris Wright
2010-06-06 13:44 ` Avi Kivity
2010-06-02 10:15 ` Michael S. Tsirkin
2010-06-02 10:26 ` Joerg Roedel
2010-06-01 21:26 ` Tom Lyon
2010-06-02 2:59 ` Avi Kivity
2010-06-02 5:29 ` Chris Wright
2010-06-02 5:40 ` Avi Kivity
2010-06-02 4:29 ` Alex Williamson
2010-06-02 4:59 ` Tom Lyon
2010-06-02 5:08 ` Avi Kivity
2010-06-02 9:53 ` Joerg Roedel
2010-06-02 9:42 ` Joerg Roedel
2010-06-02 9:50 ` Avi Kivity
2010-06-02 9:53 ` Michael S. Tsirkin
2010-06-02 10:19 ` Joerg Roedel
2010-06-02 10:21 ` Michael S. Tsirkin
2010-06-02 10:35 ` Joerg Roedel
2010-06-02 10:38 ` Michael S. Tsirkin
2010-06-02 11:12 ` Joerg Roedel
2010-06-02 11:21 ` Michael S. Tsirkin
2010-06-02 12:19 ` Joerg Roedel
2010-06-02 12:25 ` Avi Kivity
2010-06-02 12:50 ` Joerg Roedel
2010-06-02 13:06 ` Avi Kivity
2010-06-02 13:53 ` Joerg Roedel
2010-06-02 13:17 ` Michael S. Tsirkin
2010-06-02 14:01 ` Joerg Roedel
2010-06-02 12:34 ` Michael S. Tsirkin
2010-06-02 13:02 ` Joerg Roedel
2010-06-02 17:46 ` Chris Wright
2010-06-02 18:09 ` Tom Lyon
2010-06-02 19:46 ` Joerg Roedel
2010-06-03 6:23 ` Avi Kivity
2010-06-03 21:41 ` Tom Lyon
2010-06-06 9:54 ` Michael S. Tsirkin
2010-06-07 19:01 ` Tom Lyon
2010-06-08 21:22 ` Michael S. Tsirkin
2010-06-02 10:44 ` Michael S. Tsirkin
2010-05-30 12:59 ` Avi Kivity
2010-05-31 17:17 ` Alan Cox
2010-06-01 21:29 ` Tom Lyon
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