> From: Robin Murphy
> Sent: Wednesday, April 6, 2022 8:32 PM
>
> On 2022-04-06 06:58, Tian, Kevin wrote:
> >> From: Jason Gunthorpe
> >> Sent: Wednesday, April 6, 2022 9:24 AM
> >>
> >> On Wed, Apr 06, 2022 at 01:00:13AM +, Tian, Kevin wrote:
> >>
> Because domains wrap more than just
On Wed, Apr 06, 2022 at 02:37:40PM +0100, Robin Murphy wrote:
> On 2022-04-06 14:06, Jason Gunthorpe wrote:
> > On Wed, Apr 06, 2022 at 01:32:07PM +0100, Robin Murphy wrote:
> > > a particular IOMMU instance, and potentially allocate separate domains for
> > > separate devices to represent the
On 2022-04-06 14:06, Jason Gunthorpe wrote:
On Wed, Apr 06, 2022 at 01:32:07PM +0100, Robin Murphy wrote:
a particular IOMMU instance, and potentially allocate separate domains for
separate devices to represent the same address space, much like
vfio_iommu_type1_attach_group() does.
I think
On Wed, Apr 06, 2022 at 01:32:07PM +0100, Robin Murphy wrote:
> a particular IOMMU instance, and potentially allocate separate domains for
> separate devices to represent the same address space, much like
> vfio_iommu_type1_attach_group() does.
I think this VFIO code also needs some more work, it
On 2022-04-06 06:58, Tian, Kevin wrote:
From: Jason Gunthorpe
Sent: Wednesday, April 6, 2022 9:24 AM
On Wed, Apr 06, 2022 at 01:00:13AM +, Tian, Kevin wrote:
Because domains wrap more than just the IOPTE format, they have
additional data related to the IOMMU HW block itself. Imagine a
> From: Jason Gunthorpe
> Sent: Wednesday, April 6, 2022 9:24 AM
>
> On Wed, Apr 06, 2022 at 01:00:13AM +, Tian, Kevin wrote:
>
> > > Because domains wrap more than just the IOPTE format, they have
> > > additional data related to the IOMMU HW block itself. Imagine a SOC
> > > with two
On Wed, Apr 06, 2022 at 01:00:13AM +, Tian, Kevin wrote:
> > Because domains wrap more than just the IOPTE format, they have
> > additional data related to the IOMMU HW block itself. Imagine a SOC
> > with two IOMMU HW blocks that can both process the CPU IOPTE format,
> > but have different
> From: Jason Gunthorpe
> Sent: Sunday, April 3, 2022 7:32 AM
>
> On Sat, Apr 02, 2022 at 08:43:16AM +, Tian, Kevin wrote:
>
> > > This assumes any domain is interchangeable with any device, which is
> > > not the iommu model. We need a domain op to check if a device is
> > > compatiable
Hi Jason and Kevin,
On 2022/4/3 7:32, Jason Gunthorpe wrote:
On Sat, Apr 02, 2022 at 08:43:16AM +, Tian, Kevin wrote:
This assumes any domain is interchangeable with any device, which is
not the iommu model. We need a domain op to check if a device is
compatiable with the domain for vfio
On Sat, Apr 02, 2022 at 08:43:16AM +, Tian, Kevin wrote:
> > This assumes any domain is interchangeable with any device, which is
> > not the iommu model. We need a domain op to check if a device is
> > compatiable with the domain for vfio an iommufd, this should do the
> > same.
>
> This
> From: Jason Gunthorpe
> Sent: Thursday, March 31, 2022 3:02 AM
>
> On Tue, Mar 29, 2022 at 01:37:52PM +0800, Lu Baolu wrote:
> > @@ -95,6 +101,7 @@ struct iommu_domain {
> > void *handler_token;
> > struct iommu_domain_geometry geometry;
> > struct iommu_dma_cookie *iova_cookie;
>
On Tue, Mar 29, 2022 at 01:37:52PM +0800, Lu Baolu wrote:
> @@ -95,6 +101,7 @@ struct iommu_domain {
> void *handler_token;
> struct iommu_domain_geometry geometry;
> struct iommu_dma_cookie *iova_cookie;
> + struct iommu_sva_cookie *sva_cookie;
Cookie is still the wrong
On 2022/3/30 5:38, Jacob Pan wrote:
+static struct iommu_domain *
+iommu_sva_alloc_domain(struct device *dev, struct mm_struct *mm)
+{
+ struct bus_type *bus = dev->bus;
+ struct iommu_sva_cookie *cookie;
+ struct iommu_domain *domain;
+ void *curr;
+
+ if (!bus ||
Hi BaoLu,
On Tue, 29 Mar 2022 13:37:52 +0800, Lu Baolu
wrote:
> Add a new iommu domain type IOMMU_DOMAIN_SVA to represent an I/O page
> table which is shared from CPU host VA. Add some helpers to get and
> put an SVA domain and implement SVA domain life cycle management.
>
> Signed-off-by: Lu
Add a new iommu domain type IOMMU_DOMAIN_SVA to represent an I/O page
table which is shared from CPU host VA. Add some helpers to get and
put an SVA domain and implement SVA domain life cycle management.
Signed-off-by: Lu Baolu
---
include/linux/iommu.h | 7 +++
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