> From: Jacob Pan
> Sent: Wednesday, April 15, 2020 11:39 PM
>
> On Tue, 14 Apr 2020 23:47:40 +
> "Tian, Kevin" wrote:
>
> > > From: Jacob Pan
> > > Sent: Wednesday, April 15, 2020 6:32 AM
> > >
> > > On Tue, 14 Apr 2020 10:13:04 -0700
> > > Jacob Pan wrote:
> > >
> > > > > > > In any
On Tue, 14 Apr 2020 23:47:40 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Wednesday, April 15, 2020 6:32 AM
> >
> > On Tue, 14 Apr 2020 10:13:04 -0700
> > Jacob Pan wrote:
> >
> > > > > > In any of the proposed solutions, the
> > > > > > IOMMU driver is ultimately responsible
> From: Jacob Pan
> Sent: Wednesday, April 15, 2020 6:32 AM
>
> On Tue, 14 Apr 2020 10:13:04 -0700
> Jacob Pan wrote:
>
> > > > > In any of the proposed solutions, the
> > > > > IOMMU driver is ultimately responsible for validating the user
> > > > > data, so do we want vfio performing the
On Tue, 14 Apr 2020 10:13:04 -0700
Jacob Pan wrote:
> > > > In any of the proposed solutions, the
> > > > IOMMU driver is ultimately responsible for validating the user
> > > > data, so do we want vfio performing the copy_from_user() to an
> > > > object that could later be assumed to be
On Tue, 14 Apr 2020 10:13:58 -0600
Alex Williamson wrote:
> On Mon, 13 Apr 2020 22:05:15 -0700
> Jacob Pan wrote:
>
> > Hi Alex,
> > Thanks a lot for the feedback, my comments inline.
> >
> > On Mon, 13 Apr 2020 16:21:29 -0600
> > Alex Williamson wrote:
> >
> > > On Mon, 13 Apr 2020
On Mon, 13 Apr 2020 22:05:15 -0700
Jacob Pan wrote:
> Hi Alex,
> Thanks a lot for the feedback, my comments inline.
>
> On Mon, 13 Apr 2020 16:21:29 -0600
> Alex Williamson wrote:
>
> > On Mon, 13 Apr 2020 13:41:57 -0700
> > Jacob Pan wrote:
> >
> > > Hi All,
> > >
> > > Just a gentle
On Tue, 14 Apr 2020 01:11:07 -0700
Christoph Hellwig wrote:
> On Mon, Apr 13, 2020 at 01:41:57PM -0700, Jacob Pan wrote:
> > Hi All,
> >
> > Just a gentle reminder, any feedback on the options I listed below?
> > New ideas will be even better.
> >
> > Christoph, does the explanation make sense
On Mon, Apr 13, 2020 at 04:21:29PM -0600, Alex Williamson wrote:
> Is the objection to a global version or to any version fields? I don't
> really understand the global version, I'd think a mechanism to check
> extensions plus a per structure flags/version would be preferred. The
> former should
On Mon, Apr 13, 2020 at 01:41:57PM -0700, Jacob Pan wrote:
> Hi All,
>
> Just a gentle reminder, any feedback on the options I listed below? New
> ideas will be even better.
>
> Christoph, does the explanation make sense to you? We do have the
> capability/flag based scheme for IOMMU API
Hi Alex,
Thanks a lot for the feedback, my comments inline.
On Mon, 13 Apr 2020 16:21:29 -0600
Alex Williamson wrote:
> On Mon, 13 Apr 2020 13:41:57 -0700
> Jacob Pan wrote:
>
> > Hi All,
> >
> > Just a gentle reminder, any feedback on the options I listed below?
> > New ideas will be even
On Mon, 13 Apr 2020 13:41:57 -0700
Jacob Pan wrote:
> Hi All,
>
> Just a gentle reminder, any feedback on the options I listed below? New
> ideas will be even better.
>
> Christoph, does the explanation make sense to you? We do have the
> capability/flag based scheme for IOMMU API extension,
Hi All,
Just a gentle reminder, any feedback on the options I listed below? New
ideas will be even better.
Christoph, does the explanation make sense to you? We do have the
capability/flag based scheme for IOMMU API extension, the version is
mainly used for size lookup. Compatibility checking is
On Wed, 1 Apr 2020 05:32:21 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Tuesday, March 31, 2020 11:55 PM
> >
> > On Tue, 31 Mar 2020 06:06:38 +
> > "Tian, Kevin" wrote:
> >
> > > > From: Jacob Pan
> > > > Sent: Tuesday, March 31, 2020 12:08 AM
> > > >
> > > > On Mon, 30
> From: Jacob Pan
> Sent: Tuesday, March 31, 2020 11:55 PM
>
> On Tue, 31 Mar 2020 06:06:38 +
> "Tian, Kevin" wrote:
>
> > > From: Jacob Pan
> > > Sent: Tuesday, March 31, 2020 12:08 AM
> > >
> > > On Mon, 30 Mar 2020 05:40:40 +
> > > "Tian, Kevin" wrote:
> > >
> > > > > From: Jacob
On Tue, 31 Mar 2020 06:06:38 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Tuesday, March 31, 2020 12:08 AM
> >
> > On Mon, 30 Mar 2020 05:40:40 +
> > "Tian, Kevin" wrote:
> >
> > > > From: Jacob Pan
> > > > Sent: Saturday, March 28, 2020 7:54 AM
> > > >
> > > > On Fri, 27
> From: Jacob Pan
> Sent: Tuesday, March 31, 2020 12:08 AM
>
> On Mon, 30 Mar 2020 05:40:40 +
> "Tian, Kevin" wrote:
>
> > > From: Jacob Pan
> > > Sent: Saturday, March 28, 2020 7:54 AM
> > >
> > > On Fri, 27 Mar 2020 00:47:02 -0700
> > > Christoph Hellwig wrote:
> > >
> > > > On Fri,
On Mon, 30 Mar 2020 05:40:40 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Saturday, March 28, 2020 7:54 AM
> >
> > On Fri, 27 Mar 2020 00:47:02 -0700
> > Christoph Hellwig wrote:
> >
> > > On Fri, Mar 27, 2020 at 02:49:55AM +, Tian, Kevin wrote:
> > > > If those API calls
> From: Jacob Pan
> Sent: Saturday, March 28, 2020 7:54 AM
>
> On Fri, 27 Mar 2020 00:47:02 -0700
> Christoph Hellwig wrote:
>
> > On Fri, Mar 27, 2020 at 02:49:55AM +, Tian, Kevin wrote:
> > > If those API calls are inter-dependent for composing a feature
> > > (e.g. SVA), shouldn't we
On Fri, 27 Mar 2020 00:47:02 -0700
Christoph Hellwig wrote:
> On Fri, Mar 27, 2020 at 02:49:55AM +, Tian, Kevin wrote:
> > If those API calls are inter-dependent for composing a feature
> > (e.g. SVA), shouldn't we need a way to check them together before
> > exposing the feature to the
On Fri, Mar 27, 2020 at 02:49:55AM +, Tian, Kevin wrote:
> If those API calls are inter-dependent for composing a feature (e.g. SVA),
> shouldn't we need a way to check them together before exposing the
> feature to the guest, e.g. through a iommu_get_uapi_capabilities interface?
Yes, that
> From: Jacob Pan
> Sent: Friday, March 27, 2020 12:45 AM
>
> Hi Christoph,
>
> Thanks for the review. Please see my comments inline.
>
> On Thu, 26 Mar 2020 02:23:16 -0700
> Christoph Hellwig wrote:
>
> > On Wed, Mar 25, 2020 at 04:17:05PM -0700, Jacob Pan wrote:
> > > Having a single UAPI
Hi Christoph,
Thanks for the review. Please see my comments inline.
On Thu, 26 Mar 2020 02:23:16 -0700
Christoph Hellwig wrote:
> On Wed, Mar 25, 2020 at 04:17:05PM -0700, Jacob Pan wrote:
> > Having a single UAPI version to govern the user-kernel data
> > structures makes compatibility check
On Wed, Mar 25, 2020 at 04:17:05PM -0700, Jacob Pan wrote:
> Having a single UAPI version to govern the user-kernel data structures
> makes compatibility check straightforward. On the contrary, supporting
> combinations of multiple versions of the data can be a nightmare to
> maintain.
>
> This
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