The following changes since commit 11a48a5a18c63fd7621bb050228cebf13566e4d8:
Linux 5.6-rc2 (2020-02-16 13:16:59 -0800)
are available in the Git repository at:
git://git.infradead.org/users/hch/dma-mapping.git tags/dma-mapping-5.7
for you to fetch changes up to fd27a526bb381f43dded6db30b3b01
On Fri, Apr 3, 2020 at 4:47 AM Geert Uytterhoeven wrote:
> On Thu, Apr 2, 2020 at 7:27 PM John Stultz wrote:
> > On Thu, Apr 2, 2020 at 3:17 AM Yoshihiro Shimoda
> > wrote:
> > >
> > > I found an issue after applied the following patches:
> > > ---
> > > 64c775f driver core: Rename deferred_prob
Nested translation mode is supported in VT-d 3.0 Spec.CH 3.8.
With PASID granular translation type set to 0x11b, translation
result from the first level(FL) also subject to a second level(SL)
page table translation. This mode is used for SVA virtualization,
where FL performs guest virtual to guest
When Shared Virtual Memory is exposed to a guest via vIOMMU, scalable
IOTLB invalidation may be passed down from outside IOMMU subsystems.
This patch adds invalidation functions that can be used for additional
translation cache types.
Signed-off-by: Jacob Pan
---
v9 -> v10:
Fix off by 1 in pasid
An Intel iommu domain uses 5-level page table by default. If the
iommu that the domain tries to attach supports less page levels,
the top level page tables should be skipped. Add a helper to do
this so that it could be used in other places.
---
v11 Added Baolu's commit message and squashed 4 & 5 f
Shared virtual address (SVA), a.k.a, Shared virtual memory (SVM) on Intel
platforms allow address space sharing between device DMA and applications.
SVA can reduce programming complexity and enhance security.
This series is intended to enable SVA virtualization, i.e. enable use of SVA
within a gues
Virtual command registers are used in the guest only, to prevent
vmexit cost, we cache the capability and store it during initialization.
Signed-off-by: Jacob Pan
Reviewed-by: Eric Auger
Reviewed-by: Lu Baolu
---
v7 Reviewed by Eric & Baolu
---
Signed-off-by: Jacob Pan
---
drivers/iommu/dma
Move domain helper to header to be used by SVA code.
Signed-off-by: Jacob Pan
Reviewed-by: Eric Auger
Reviewed-by: Kevin Tian
---
drivers/iommu/intel-iommu.c | 6 --
include/linux/intel-iommu.h | 6 ++
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/intel-i
When Shared Virtual Address (SVA) is enabled for a guest OS via
vIOMMU, we need to provide invalidation support at IOMMU API and driver
level. This patch adds Intel VT-d specific function to implement
iommu passdown invalidate API for shared virtual address.
The use case is for supporting caching
From: Lu Baolu
Enabling IOMMU in a guest requires communication with the host
driver for certain aspects. Use of PASID ID to enable Shared Virtual
Addressing (SVA) requires managing PASID's in the host. VT-d 3.0 spec
provides a Virtual Command Register (VCMD) to facilitate this.
Writes to this re
Memory type related flags can be grouped together for one simple check.
---
v9 renamed from EMT to MTS since these are memory type support flags.
---
Reviewed-by: Eric Auger
Signed-off-by: Jacob Pan
---
include/uapi/linux/iommu.h | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff
When VT-d driver runs in the guest, PASID allocation must be
performed via virtual command interface. This patch registers a
custom IOASID allocator which takes precedence over the default
XArray based allocator. The resulting IOASID allocation will always
come from the host. This ensures that PASI
When supporting guest SVA with emulated IOMMU, the guest PASID
table is shadowed in VMM. Updates to guest vIOMMU PASID table
will result in PASID cache flush which will be passed down to
the host as bind guest PASID calls.
For the SL page tables, it will be harvested from device's
default domain (
On Fri, 3 Apr 2020 13:30:49 +
"Liu, Yi L" wrote:
> Hi Alex,
>
> > From: Alex Williamson
> > Sent: Friday, April 3, 2020 3:57 AM
> > To: Liu, Yi L
> >
> > On Sun, 22 Mar 2020 05:32:03 -0700
> > "Liu, Yi L" wrote:
> >
> > > From: Liu Yi L
> > >
> > > VFIO_TYPE1_NESTING_IOMMU is an IOMM
On Fri, 3 Apr 2020 13:12:50 +
"Liu, Yi L" wrote:
> Hi Alex,
>
> > From: Alex Williamson
> > Sent: Friday, April 3, 2020 1:50 AM
> > Subject: Re: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
> >
> > On Sun, 22 Mar 2020 05:31:58 -0700
> > "Liu, Yi L" wrote:
> >
> > > Fro
On Fri, 3 Apr 2020 08:17:44 +
"Liu, Yi L" wrote:
> > From: Alex Williamson < alex.william...@redhat.com >
> > Sent: Friday, April 3, 2020 2:01 AM
> > To: Liu, Yi L
> > Subject: Re: [PATCH v1 3/8] vfio/type1: Report PASID alloc/free support to
> > userspace
> >
> > On Sun, 22 Mar 2020 05:32:
On Fri, 3 Apr 2020 07:53:55 +
"Liu, Yi L" wrote:
> Hi Alex,
>
> > From: Alex Williamson
> > Sent: Friday, April 3, 2020 7:00 AM
> > To: Liu, Yi L
> > Subject: Re: [PATCH v1 2/2] vfio/pci: Emulate PASID/PRI capability for VFs
> >
> > On Sun, 22 Mar 2020 05:33:14 -0700
> > "Liu, Yi L" wrot
> Release resources when exiting on error.
I have got doubts that such a change description fits to
the proposed source code adjustment.
…
> +++ b/drivers/iommu/qcom_iommu.c
> @@ -813,8 +813,11 @@ static int qcom_iommu_device_probe(struct
> platform_device *pdev)
> qcom_iommu->dev = dev;
On Fri, 3 Apr 2020 06:39:22 +
"Tian, Kevin" wrote:
> > From: Alex Williamson
> > Sent: Friday, April 3, 2020 4:24 AM
> >
> > On Sun, 22 Mar 2020 05:32:04 -0700
> > "Liu, Yi L" wrote:
> >
> > > From: Liu Yi L
> > >
> > > For VFIO IOMMUs with the type VFIO_TYPE1_NESTING_IOMMU, guest
>
On Fri, 3 Apr 2020 06:39:22 +
"Tian, Kevin" wrote:
> > From: Alex Williamson
> > Sent: Friday, April 3, 2020 4:24 AM
> >
> > On Sun, 22 Mar 2020 05:32:04 -0700
> > "Liu, Yi L" wrote:
> >
> > > From: Liu Yi L
> > >
> > > For VFIO IOMMUs with the type VFIO_TYPE1_NESTING_IOMMU, guest
>
On Fri, 3 Apr 2020 05:58:55 +
"Tian, Kevin" wrote:
> > From: Alex Williamson
> > Sent: Friday, April 3, 2020 1:50 AM
> >
> > On Sun, 22 Mar 2020 05:31:58 -0700
> > "Liu, Yi L" wrote:
> >
> > > From: Liu Yi L
> > >
> > > For a long time, devices have only one DMA address space from plat
Hi Alex,
> From: Alex Williamson
> Sent: Friday, April 3, 2020 4:34 AM
> To: Liu, Yi L
> Subject: Re: [PATCH v1 8/8] vfio/type1: Add vSVA support for IOMMU-backed
> mdevs
>
> On Sun, 22 Mar 2020 05:32:05 -0700
> "Liu, Yi L" wrote:
>
> > From: Liu Yi L
> >
> > Recent years, mediated device pa
Hi Alex,
> From: Alex Williamson
> Sent: Friday, April 3, 2020 3:57 AM
> To: Liu, Yi L
>
> On Sun, 22 Mar 2020 05:32:03 -0700
> "Liu, Yi L" wrote:
>
> > From: Liu Yi L
> >
> > VFIO_TYPE1_NESTING_IOMMU is an IOMMU type which is backed by hardware
> > IOMMUs that have nesting DMA translation (
Hi Alex,
> From: Alex Williamson
> Sent: Friday, April 3, 2020 1:50 AM
> Subject: Re: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
>
> On Sun, 22 Mar 2020 05:31:58 -0700
> "Liu, Yi L" wrote:
>
> > From: Liu Yi L
> >
> > For a long time, devices have only one DMA address space
Hi John,
On Fri, Apr 3, 2020 at 1:47 PM Geert Uytterhoeven wrote:
> On Thu, Apr 2, 2020 at 7:27 PM John Stultz wrote:
> > On Thu, Apr 2, 2020 at 3:17 AM Yoshihiro Shimoda
> > wrote:
> > >
> > > I found an issue after applied the following patches:
> > > ---
> > > 64c775f driver core: Rename def
> From: Jean-Philippe Brucker
> Sent: Friday, April 3, 2020 8:40 PM
> Subject: Re: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
>
> On Fri, Apr 03, 2020 at 11:56:09AM +, Liu, Yi L wrote:
> > > > /**
> > > > + * VFIO_MM objects - create, release, get, put, search
> > > > + *
On Fri, Apr 03, 2020 at 11:56:09AM +, Liu, Yi L wrote:
> > > /**
> > > + * VFIO_MM objects - create, release, get, put, search
> > > + * Caller of the function should have held vfio.vfio_mm_lock.
> > > + */
> > > +static struct vfio_mm *vfio_create_mm(struct mm_struct *mm)
> > > +{
> > > + str
Hi Alex,
> From: Alex Williamson
> Sent: Friday, April 3, 2020 3:20 AM
> To: Liu, Yi L
> Subject: Re: [PATCH v1 5/8] vfio/type1: Report 1st-level/stage-1 format to
> userspace
>
> On Sun, 22 Mar 2020 05:32:02 -0700
> "Liu, Yi L" wrote:
>
> > From: Liu Yi L
> >
> > VFIO exposes IOMMU nesting
Hi Jean,
> From: Jean-Philippe Brucker
> Sent: Thursday, April 2, 2020 9:53 PM
> To: Liu, Yi L
> Subject: Re: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
>
> Hi Yi,
>
> On Sun, Mar 22, 2020 at 05:31:58AM -0700, Liu, Yi L wrote:
> > From: Liu Yi L
> >
> > For a long time, dev
Hi John,
On Thu, Apr 2, 2020 at 7:27 PM John Stultz wrote:
> On Thu, Apr 2, 2020 at 3:17 AM Yoshihiro Shimoda
> wrote:
> >
> > I found an issue after applied the following patches:
> > ---
> > 64c775f driver core: Rename deferred_probe_timeout and make it global
> > 0e9f8d0 driver core: Remove d
Hi Alex,
> From: Alex Williamson
> Sent: Friday, April 3, 2020 7:00 AM
> To: Liu, Yi L
> Subject: Re: [PATCH v1 2/2] vfio/pci: Emulate PASID/PRI capability for VFs
>
> On Sun, 22 Mar 2020 05:33:14 -0700
> "Liu, Yi L" wrote:
>
> > From: Liu Yi L
> >
> > Per PCIe r5.0, sec 9.3.7.14, if a PF im
On 26/03/2020 12:26, Alexey Kardashevskiy wrote:
>
>
> On 25/03/2020 19:37, Christoph Hellwig wrote:
>> On Wed, Mar 25, 2020 at 03:51:36PM +1100, Alexey Kardashevskiy wrote:
> This is for persistent memory which you can DMA to/from but yet it does
> not appear in the system as a normal
On Thu, Apr 02, 2020 at 08:05:29AM +, Liu, Yi L wrote:
> > > > > static long vfio_iommu_type1_ioctl(void *iommu_data,
> > > > > default:
> > > > > return -EINVAL;
> > > > > }
> > > > > +
> > > > > + } else if (cmd == VFIO_IOMMU_BIND) {
> > >
On Wed, Apr 01, 2020 at 03:01:12PM +0200, Auger Eric wrote:
> >>> header = vfio_info_cap_add(caps, sizeof(*nesting_cap),
> >>> VFIO_IOMMU_TYPE1_INFO_CAP_NESTING, 1);
> >>> @@ -2254,6 +2309,7 @@ static int vfio_iommu_info_add_nesting_cap(struct
> >> vfio_iommu *iommu,
> From: Alex Williamson < alex.william...@redhat.com >
> Sent: Friday, April 3, 2020 2:01 AM
> To: Liu, Yi L
> Subject: Re: [PATCH v1 3/8] vfio/type1: Report PASID alloc/free support to
> userspace
>
> On Sun, 22 Mar 2020 05:32:00 -0700
> "Liu, Yi L" wrote:
>
> > From: Liu Yi L
> >
> > This pa
> From: Alex Williamson
> Sent: Friday, April 3, 2020 1:59 AM
> To: Tian, Kevin
> Subject: Re: [PATCH v1 2/8] vfio/type1: Add vfio_iommu_type1 parameter for
> quota
> tuning
>
> On Mon, 30 Mar 2020 11:44:08 +
> "Tian, Kevin" wrote:
>
> > > From: Liu, Yi L
> > > Sent: Monday, March 30, 20
Hi Alex,
> From: Alex Williamson
> Sent: Friday, April 3, 2020 7:00 AM
> To: Liu, Yi L
> Subject: Re: [PATCH v1 2/2] vfio/pci: Emulate PASID/PRI capability for VFs
>
> On Sun, 22 Mar 2020 05:33:14 -0700
> "Liu, Yi L" wrote:
>
> > From: Liu Yi L
> >
> > Per PCIe r5.0, sec 9.3.7.14, if a PF im
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