> -Original Message-
> From: iommu-boun...@lists.linux-foundation.org [mailto:iommu-
> boun...@lists.linux-foundation.org] On Behalf Of Jean-Philippe Brucker
> Sent: Tuesday, February 28, 2017 3:54 AM
> Cc: Shanker Donthineni ; k...@vger.kernel.org;
> Catalin Marinas ; Sinan Kaya
> ; Will
Hi Jean,
I'm working on virtual SVM, and have some comments on the VFIO channel
definition.
> -Original Message-
> From: iommu-boun...@lists.linux-foundation.org [mailto:iommu-
> boun...@lists.linux-foundation.org] On Behalf Of Jean-Philippe Brucker
> Sent: Tuesday, February 28, 2017 3:55
Hi Jean,
Thx for the excellent ideas. Pls refer to comments inline.
[...]
> > Hi Jean,
> >
> > I'm working on virtual SVM, and have some comments on the VFIO channel
> > definition.
>
> Thanks a lot for the comments, this is quite interesting to me. I just have
> some
> concerns about portabil
> -Original Message-
> From: kvm-ow...@vger.kernel.org [mailto:kvm-ow...@vger.kernel.org] On Behalf
> Of Jean-Philippe Brucker
> Sent: Thursday, March 23, 2017 9:38 PM
> To: Liu, Yi L ; Alex Williamson
>
> Cc: Shanker Donthineni ; k...@vger.kernel.org;
> Cata
> -Original Message-
> From: Jean-Philippe Brucker [mailto:jean-philippe.bruc...@arm.com]
> Sent: Monday, March 27, 2017 6:14 PM
> To: Liu, Yi L ; Alex Williamson
>
> Cc: Shanker Donthineni ; k...@vger.kernel.org;
> Catalin Marinas ; Sinan Kaya
> ; Will Deac
n the proposed invalidate request VIRTIO_IOMMU_T_INVALIDATE. So it
may be preferred to have opaque part when doing the iommu tlb invalidate
propagation in SVM virtualization.
http://www.spinics.net/lists/kvm/msg147993.html
Best Wishes,
Yi L
Liu, Yi L (20):
intel_iommu: add "ecs" o
ace driver, VFIO_SVM_BIND_PGTABLE is added to
support page table bind from guest.
https://patchwork.kernel.org/patch/9594231/
Signed-off-by: Liu, Yi L
---
linux-headers/linux/vfio.h | 18 ++
1 file changed, 18 insertions(+)
diff --git a/linux-headers/linux/vfio.h b/linux-headers/li
This patch adds iommu.h to define some generic definition for IOMMU.
Here defines "struct pasid_table_info" for guest pasid table bind.
Signed-off-by: Liu, Yi L
---
linux-headers/linux/iommu.h | 30 ++
1 file changed, 30 insertions(+)
create mode 10
This patch modifies parameter of IOMMUNotifier, use "void *data" instead
of "IOMMUTLBEntry*". This is to extend it to support notifiers other than
MAP/UNMAP.
Signed-off-by: Liu, Yi L
---
hw/vfio/common.c | 3 ++-
hw/virtio/vhost.c | 3 ++-
include/exec/memory.h | 2
-off-by: Liu, Yi L
---
include/exec/memory.h | 11 +++
memory.c | 21 +
2 files changed, 32 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 49087ef..3b8f487 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
With vIOMMU exposed to guest, notify vIOMMU emulator to record information
of this assigned device. This patch adds iommu_ops->record_device to record
the host bus/slot/function for this device. In future, it can be extended to
other info which is needed.
Signed-off-by: Liu, Yi L
---
hw/v
tor
should capture it, then link the whole guest PASID table to host and
enable nested mode for the assigned device.
Signed-off-by: Liu, Yi L
---
hw/i386/intel_iommu.c | 121 +++--
hw/i386/intel_iommu_internal.h | 11
2 files changed, 127 inserti
: Liu, Yi L
---
memory.c | 8
1 file changed, 8 insertions(+)
diff --git a/memory.c b/memory.c
index 9c253cc..0728e62 100644
--- a/memory.c
+++ b/memory.c
@@ -1630,6 +1630,14 @@ void memory_region_iommu_replay(MemoryRegion *mr,
IOMMUNotifier *n,
hwaddr addr, granularity
This patch adds a separate function to fire IOMMU TLB invalidate notifier.
Signed-off-by: Liu, Yi L
---
include/exec/memory.h | 9 +
memory.c | 18 ++
2 files changed, 27 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index
n_add would not be triggered. While for the newly added
notifier, it requires to be registered once virtual intel_iommu is
exposed to guest.
Signed-off-by: Liu, Yi L
---
hw/vfio/common.c | 37 +++---
hw/vfio/pci.c | 53 ++
e bind notifier is needed. The
newly added pasid table bind notifier would be unregistered in the
vfio_disconnect_container(). The link below would direct you to Peter's
dynamic switch patch.
https://www.mail-archive.com/qemu-devel@nongnu.org/msg62.html
Signed-off-by: Liu, Yi L
---
hw/vf
y SVM capable
device.
Signed-off-by: Liu, Yi L
---
hw/i386/intel_iommu.c | 131 +++--
hw/i386/intel_iommu_internal.h | 9 +++
include/hw/i386/intel_iommu.h | 2 +-
3 files changed, 97 insertions(+), 45 deletions(-)
diff --git a/hw/i386/int
to introduce this new notifier to meet
the SVM virtualization requirement. Further detail would be included in the
patch below:
"intel_iommu: propagate Extended-IOTLB invalidate to host"
Signed-off-by: Liu, Yi L
---
hw/vfio/pci.c | 37 +
Add FOR_EACH_ASSIGN_DEVICE. It would be used to loop all assigned
devices when processing guest pasid table linking and iommu cache
invalidate propagation.
Signed-off-by: Liu, Yi L
---
hw/i386/intel_iommu.c | 32
hw/i386/intel_iommu_internal.h | 11
ify vIOMMU emulator to record necessary
information about the assigned device.
Signed-off-by: Liu, Yi L
---
include/exec/memory.h | 11 +++
memory.c | 12
2 files changed, 23 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 7bd1
This patch provides iommu_ops->record_device implementation for
intel_iommu. It records the host sid in the IntelIOMMUNotifierNode for
further virtualization usage. e.g. guest sid -> host sid translation
during propagating 1st level cache invalidation from guest to host.
Signed-off-by: Liu
in
pIOMMU. In future maybe PASID needs to be replaced.
Signed-off-by: Liu, Yi L
---
hw/i386/intel_iommu.c | 43 ++
hw/i386/intel_iommu_internal.h | 7 +++
2 files changed, 50 insertions(+)
diff --git a/hw/i386/intel_iommu.c b/hw/i386
Report ecap.ECS=1 to guest by "-deivce intel-iommu, ecs=on" in QEMU Cmd
Signed-off-by: Liu, Yi L
---
hw/i386/intel_iommu.c | 5 +
hw/i386/intel_iommu_internal.h | 1 +
include/hw/i386/intel_iommu.h | 1 +
3 files changed, 7 insertions(+)
diff --git a/hw/i386/intel_io
Expose "Shared Virtual Memory" to guest by using "svm" option.
Also use "svm" to expose SVM related capabilities to guest.
e.g. "-device intel-iommu, svm=on"
Signed-off-by: Liu, Yi L
---
hw/i386/intel_iommu.c | 10 ++
hw/i386/intel_iomm
From: "Liu, Yi L"
This patch adds IOCTL processing in vfio_iommu_type1 for
VFIO_IOMMU_SVM_BIND_TASK. Binds the PASID table bind by
calling iommu_ops->bind_pasid_table to link the whole
PASID table to pIOMMU.
For VT-d, it is linking the guest PASID table to host pIOMMU.
This is
do invalidate function
Liu, Yi L (5):
iommu: Introduce iommu do invalidate API function
VFIO: Add new IOTCL for PASID Table bind propagation
VFIO: do pasid table binding
VFIO: Add new IOCTL for IOMMU TLB invalidate propagation
VFIO: do IOMMU TLB invalidation from guest
drivers/iommu/
From: "Liu, Yi L"
When a SVM capable device is assigned to a guest, the first level page
tables are owned by the guest and the guest PASID table pointer is
linked to the device context entry of the physical IOMMU.
Host IOMMU driver has no knowledge of caching structure updates unless
From: "Liu, Yi L"
This patch adds VFIO_IOMMU_SVM_BIND_TASK for potential PASID table
binding requests.
On VT-d, this IOCTL cmd would be used to link the guest PASID page table
to host. While for other vendors, it may also be used to support other
kind of SVM bind request. Previously,
, Yi L
---
drivers/iommu/intel-iommu.c | 103 ++
include/linux/dma_remapping.h | 1 +
2 files changed, 104 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 646756c..6d5b939 100644
--- a/drivers/iommu/intel
to the physical IOMMU.
The assumption is that guest to host device ID mapping should be
resolved prior to calling IOMMU driver. Based on the device handle,
host IOMMU driver can replace certain fields before submit to the
invalidation queue.
Signed-off-by: Liu, Yi L
Signed-off-by: Jacob Pan
submitting to pIOMMU. e.g. guest domain ID must be replaced with the real
domain ID in host. In future PASID may need to be replaced.
Signed-off-by: Liu, Yi L
---
hw/i386/intel_iommu.c | 56 ++
hw/i386/intel_iommu_internal.h | 10
2 files changed
From: "Liu, Yi L"
This patch adds support for VFIO_IOMMU_TLB_INVALIDATE cmd in
vfio_iommu_type1.
For SVM virtualization on VT-d, for VFIO_IOMMU_TLB_INVALIDATE, it
calls iommu_ops->do_invalidate() to submit the guest iommu cache
invalidation to pIOMMU.
Signed-off-by: Liu, Yi L
From: "Liu, Yi L"
This patch adds VFIO_IOMMU_TLB_INVALIDATE to propagate IOMMU TLB
invalidate request from guest to host.
In the case of SVM virtualization on VT-d, host IOMMU driver has
no knowledge of caching structure updates unless the guest
invalidation activities are passed d
future PASID may also need to be replaced.
Signed-off-by: Liu, Yi L
---
hw/i386/intel_iommu.c | 126 +
hw/i386/intel_iommu_internal.h | 33 +++
2 files changed, 159 insertions(+)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index
inding pasid table of assigned devices.
This patch also adds model definition in iommu.h. It would be used to
check if the bind request is from a compatible entity. e.g. a bind
request from an intel_iommu emulator may not be supported by an ARM SMMU
driver.
Signed-off-by: Jacob Pan
Signed-off-by: Liu
On Wed, Apr 26, 2017 at 03:50:16PM +0200, Paolo Bonzini wrote:
>
>
> On 26/04/2017 12:06, Liu, Yi L wrote:
> > +void memory_region_notify_iommu_svm_bind(MemoryRegion *mr,
> > + void *data)
> > +{
> > +
On Wed, Apr 26, 2017 at 05:56:50PM +0100, Jean-Philippe Brucker wrote:
> On 26/04/17 11:12, Liu, Yi L wrote:
> > From: "Liu, Yi L"
> >
> > This patch adds VFIO_IOMMU_SVM_BIND_TASK for potential PASID table
> > binding requests.
> >
> > On VT-
On Wed, Apr 26, 2017 at 05:56:45PM +0100, Jean-Philippe Brucker wrote:
> Hi Yi, Jacob,
>
> On 26/04/17 11:11, Liu, Yi L wrote:
> > From: Jacob Pan
> >
> > Virtual IOMMU was proposed to support Shared Virtual Memory (SVM) use
> > case in the guest:
> >
On Thu, Apr 27, 2017 at 02:14:27PM +0800, Peter Xu wrote:
> On Thu, Apr 27, 2017 at 10:37:19AM +0800, Liu, Yi L wrote:
> > On Wed, Apr 26, 2017 at 03:50:16PM +0200, Paolo Bonzini wrote:
> > >
> > >
> > > On 26/04/2017 12:06, Liu, Yi L wrote:
> > >
On Thu, Apr 27, 2017 at 11:12:45AM +0100, Jean-Philippe Brucker wrote:
> On 27/04/17 07:36, Liu, Yi L wrote:
> > On Wed, Apr 26, 2017 at 05:56:45PM +0100, Jean-Philippe Brucker wrote:
> >> Hi Yi, Jacob,
> >>
> >> On 26/04/17 11:11, Liu, Yi L wrote:
> >>
On Wed, Apr 26, 2017 at 05:56:45PM +0100, Jean-Philippe Brucker wrote:
> Hi Yi, Jacob,
>
> On 26/04/17 11:11, Liu, Yi L wrote:
> > From: Jacob Pan
> >
> > Virtual IOMMU was proposed to support Shared Virtual Memory (SVM) use
> > case in the guest:
> >
On Thu, Apr 27, 2017 at 06:32:21PM +0800, Peter Xu wrote:
> On Wed, Apr 26, 2017 at 06:06:32PM +0800, Liu, Yi L wrote:
> > VT-d implementations reporting PASID or PRS fields as "Set", must also
> > report ecap.ECS as "Set". Extended-Context is required for SVM.
&
On Fri, Apr 28, 2017 at 02:00:15PM +0800, Lan Tianyu wrote:
> On 2017年04月27日 18:32, Peter Xu wrote:
> > On Wed, Apr 26, 2017 at 06:06:32PM +0800, Liu, Yi L wrote:
> >> VT-d implementations reporting PASID or PRS fields as "Set", must also
> >> report ecap.ECS a
ntain the TLB.
Be free to let me know if you want more detail.
Thanks,
Yi L
>
> Thanks!
>
> On 04/26/2017 06:11 PM, Liu, Yi L wrote:
> >Hi,
> >
> >This patchset introduces SVM virtualization for intel_iommu in
> >IOMMU/VFIO. The total SVM virtualization for
On Thu, 27 Apr 2017 18:53:17 +0800
Peter Xu wrote:
> On Wed, Apr 26, 2017 at 06:06:33PM +0800, Liu, Yi L wrote:
> > Expose "Shared Virtual Memory" to guest by using "svm" option.
> > Also use "svm" to expose SVM related capabilities to guest.
> >
On Mon, May 08, 2017 at 07:20:34PM +0800, Peter Xu wrote:
> On Mon, May 08, 2017 at 10:38:09AM +0000, Liu, Yi L wrote:
> > On Thu, 27 Apr 2017 18:53:17 +0800
> > Peter Xu wrote:
> >
> > > On Wed, Apr 26, 2017 at 06:06:33PM +0800, Liu, Yi L wrote:
> > > &g
On Wed, Apr 26, 2017 at 06:12:02PM +0800, Liu, Yi L wrote:
> From: "Liu, Yi L"
Hi Alex,
In this patchset, I'm trying to add two new IOCTL cmd for Shared
Virtual Memory virtualization. One for binding guest PASID Table
and one for iommu tlb invalidation from guest. ARM has simi
On Tue, May 09, 2017 at 03:55:20PM +0800, Xiao Guangrong wrote:
>
>
> On 04/26/2017 06:12 PM, Liu, Yi L wrote:
> >From: "Liu, Yi L"
> >
> >This patch adds IOCTL processing in vfio_iommu_type1 for
> >VFIO_IOMMU_SVM_BIND_TASK. Binds the PASID table bin
On Fri, May 12, 2017 at 01:11:02PM +0100, Jean-Philippe Brucker wrote:
> Hi Yi,
>
> On 26/04/17 11:12, Liu, Yi L wrote:
> > From: "Liu, Yi L"
> >
> > This patch adds VFIO_IOMMU_TLB_INVALIDATE to propagate IOMMU TLB
> > invalidate request from
On Fri, May 12, 2017 at 03:58:43PM -0600, Alex Williamson wrote:
> On Wed, 26 Apr 2017 18:12:04 +0800
> "Liu, Yi L" wrote:
>
> > From: "Liu, Yi L"
> >
> > This patch adds VFIO_IOMMU_TLB_INVALIDATE to propagate IOMMU TLB
> > invalidate re
On Fri, May 12, 2017 at 03:59:14PM -0600, Alex Williamson wrote:
> On Wed, 26 Apr 2017 18:11:58 +0800
> "Liu, Yi L" wrote:
>
> > From: Jacob Pan
> >
> > Virtual IOMMU was proposed to support Shared Virtual Memory (SVM) use
> > case in the guest:
On Fri, May 12, 2017 at 03:59:24PM -0600, Alex Williamson wrote:
> On Wed, 26 Apr 2017 18:12:00 +0800
> "Liu, Yi L" wrote:
>
Hi Alex,
Pls refer to the open I mentioned in this email, I need your comments
on it to prepare the formal patchset for SVM virtualization. Thx.
&
On Fri, May 12, 2017 at 03:59:18PM -0600, Alex Williamson wrote:
> On Wed, 26 Apr 2017 18:12:01 +0800
> "Liu, Yi L" wrote:
>
> > From: Jacob Pan
> >
> > This patch adds Intel VT-d specific function to implement
> > iommu_do_invalidate API.
>
On Fri, May 12, 2017 at 03:58:51PM -0600, Alex Williamson wrote:
> On Wed, 26 Apr 2017 18:12:02 +0800
> "Liu, Yi L" wrote:
>
> > From: "Liu, Yi L"
> >
> > This patch adds VFIO_IOMMU_SVM_BIND_TASK for potential PASID table
> > binding reques
Hi Alex,
What's your opinion with Tianyu's question? Is it accepatable
to use VFIO API in intel_iommu emulator?
Thanks,
Yi L
On Fri, Apr 28, 2017 at 02:46:16PM +0800, Lan Tianyu wrote:
> On 2017年04月26日 18:06, Liu, Yi L wrote:
> > With vIOMMU exposed to guest, vIOMMU e
On Fri, May 19, 2017 at 09:07:49AM +, Tian, Kevin wrote:
> > From: Liu, Yi L [mailto:yi.l@linux.intel.com]
> > Sent: Friday, May 19, 2017 1:24 PM
> >
> > Hi Alex,
> >
> > What's your opinion with Tianyu's question? Is it accepatable
> &g
On Fri, Apr 28, 2017 at 01:51:42PM +0100, Jean-Philippe Brucker wrote:
> On 28/04/17 10:04, Liu, Yi L wrote:
Hi Jean,
Sorry for the delay response. Still have some follow-up comments on
per-device or per-group. Pls refer to comments inline.
> > On Wed, Apr 26, 2017 at 05:56:45PM +0
ant VFIO engae too much on the data parsing.
If we move the scope,flags,pasid,vaddr,size fields to vfio_iommu_tlb_invalidate,
then both kernel space vfio and user space vfio needs to do much parsing. So I
may prefer the way above.
If you've got any other idea, pls feel free to post it. It'
Hi Jean,
On Mon, Jul 03, 2017 at 12:52:52PM +0100, Jean-Philippe Brucker wrote:
> Hi Yi,
>
> On 02/07/17 11:06, Liu, Yi L wrote:
> > On Fri, May 12, 2017 at 01:11:02PM +0100, Jean-Philippe Brucker wrote:
> >
> > Hi Jean,
> >
> > As we've got
> -Original Message-
> From: iommu-boun...@lists.linux-foundation.org [mailto:iommu-
> boun...@lists.linux-foundation.org] On Behalf Of valmiki
> Sent: Sunday, July 9, 2017 11:16 AM
> To: Alex Williamson
> Cc: Lan, Tianyu ; Tian, Kevin ;
> k...@vger.kernel.org; linux-...@vger.kernel.org;
t; From: Alex Williamson [mailto:alex.william...@redhat.com]
> Sent: Thursday, July 6, 2017 1:28 AM
> To: Jean-Philippe Brucker
> Cc: Tian, Kevin ; Liu, Yi L ;
> Lan,
> Tianyu ; Liu, Yi L ; Raj, Ashok
> ; k...@vger.kernel.org; jasow...@redhat.com; Will Deacon
> ; pet...@redhat.co
Hi Alex,
Pls refer to the response inline.
> -Original Message-
> From: kvm-ow...@vger.kernel.org [mailto:kvm-ow...@vger.kernel.org] On Behalf
> Of Alex Williamson
> Sent: Saturday, July 15, 2017 2:16 AM
> To: Liu, Yi L
> Cc: Jean-Philippe Brucker ; Tian, Kevin
&
On Mon, Jul 17, 2017 at 04:45:15PM -0600, Alex Williamson wrote:
> On Mon, 17 Jul 2017 10:58:41 +
> "Liu, Yi L" wrote:
>
> > Hi Alex,
> >
> > Pls refer to the response inline.
> >
> > > -Original Message-
> > > From: kv
Hi Baolu,
> From: iommu-boun...@lists.linux-foundation.org [mailto:iommu-
> boun...@lists.linux-foundation.org] On Behalf Of Lu Baolu
> Sent: Monday, November 5, 2018 10:19 AM
> To: Joerg Roedel ; David Woodhouse
> Cc: Raj, Ashok ; linux-ker...@vger.kernel.org;
> iommu@lists.linux-foundation.org
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Monday, November 5, 2018 1:45 PM
> To: Liu, Yi L ; Joerg Roedel ; David
> Woodhouse
> Cc: baolu...@linux.intel.com; Raj, Ashok ; linux-
> ker...@vger.kernel.org; iommu@lists.linux-foundation.org
> Subject: Re: [PATC
Hi Baolu,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Monday, November 5, 2018 1:32 PM
[...]
> ---
> drivers/iommu/dmar.c| 83 +++--
> drivers/iommu/intel-svm.c | 76 --
> drivers/iommu/intel_irq_remapping.
id for first-level and pass-through
> translations.
>
> Cc: Ashok Raj
> Cc: Jacob Pan
> Cc: Kevin Tian
> Cc: Liu Yi L
> Cc: Sanjay Kumar
> Signed-off-by: Lu Baolu
> ---
> drivers/iommu/intel-iommu.c | 10 ++
> drivers/iommu/intel-pasid.h | 6 ++
> 2 files
through.
A little bit refining to the description:)
"This patch adds interfaces for setup or tear down second level
translation in PASID granularity. Translation type includes second
level only type and pass-through type."
> Cc: Ashok Raj
> Cc: Jacob Pan
> Cc: Kevin Tian
&g
Hi Baolu,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Monday, November 5, 2018 1:32 PM
> Subject: [PATCH v4 08/12] iommu/vt-d: Pass pasid table to context mapping
>
> So that the pasid related info, such as the pasid table and the
> maximum of pasid could be used during setting up
e PASID entries for first. :)
> level page table translation.
>
> Cc: Ashok Raj
> Cc: Jacob Pan
> Cc: Kevin Tian
> Cc: Liu Yi L
> Signed-off-by: Sanjay Kumar
> Signed-off-by: Lu Baolu
> Reviewed-by: Ashok Raj
> ---
> drivers/iommu/intel-pasid.c | 81 ++
Hi Baolu,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Monday, November 5, 2018 1:32 PM
> Subject: [PATCH v4 03/12] iommu/vt-d: Move page table helpers into header
>
> So that they could also be used in other source files.
Just a refine. :)
"This patch moves page table helpers to h
Hi,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Thursday, November 8, 2018 10:17 AM
> Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation descriptor
> support
>
> Hi Yi,
>
> On 11/7/18 2:07 PM, Liu, Yi L wrote:
> > Hi Baolu,
> &g
Hi,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Thursday, November 8, 2018 10:28 AM
> Subject: Re: [PATCH v4 06/12] iommu/vt-d: Add second level page table
> interface
>
> Hi,
>
> On 11/7/18 3:13 PM, Liu, Yi L wrote:
> > Hi Baolu,
> &g
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Thursday, November 8, 2018 1:25 PM
> Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation descriptor
> support
>
> Hi,
>
> On 11/8/18 11:49 AM, Liu, Yi L wrote:
> > Hi,
> &g
> From: Liu, Yi L
> Sent: Thursday, November 8, 2018 1:45 PM
> > >>>> + memcpy(desc, qi->desc + (wait_index << shift),
> > >>>
> > >>> Would "memcpy(desc, (unsigned long long) (qi->desc + (wait_index
>
Hi,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Thursday, November 8, 2018 2:14 PM
>
> Hi,
>
> On 11/8/18 1:45 PM, Liu, Yi L wrote:
> >> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> >> Sent: Thursday, November 8, 2018 1:25 PM
> >
Hi,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Friday, November 9, 2018 9:40 AM
> Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation descriptor
> support
>
> Hi,
>
> On 11/8/18 3:20 PM, Liu, Yi L wrote:
> > Hi,
> &g
Hi James,
Regards to the relationship of iommu group and domain, the blog written by Alex
may help you. The blog explained very well on how iommu group is determined and
why.
http://vfio.blogspot.com/2014/08/iommu-groups-inside-and-out.html
> From: iommu-boun...@lists.linux-foundation.org [mailt
Suggested-by: Christoph Hellwig
> Signed-off-by: Lu Baolu
> Reviewed-by: Christoph Hellwig
> ---
Reviewed-by: Liu, Yi L
Just out of curious, did you considered to modify the original file
name to be an intel specific file name? What makes you believe
merging
Hi Joerg,
> From: Joerg Roedel [mailto:j...@8bytes.org]
> Sent: Monday, December 3, 2018 5:49 AM
> To: Lu Baolu
> Subject: Re: [PATCH v5 04/12] iommu/vt-d: Add 256-bit invalidation descriptor
> support
>
> On Wed, Nov 28, 2018 at 11:54:41AM +0800, Lu Baolu wrote:
> > -
> > - desc_page = alloc_
Hi Joerg,
> From: Joerg Roedel [mailto:j...@8bytes.org]
> Sent: Monday, December 3, 2018 5:44 AM
> To: Lu Baolu
> Subject: Re: [PATCH v5 02/12] iommu/vt-d: Manage scalalble mode PASID tables
>
> Hi Baolu,
>
> On Wed, Nov 28, 2018 at 11:54:39AM +0800, Lu Baolu wrote:
> > @@ -2482,12 +2482,13 @@
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Sunday, November 11, 2018 10:45 PM
> Subject: [RFC PATCH 1/5] iommu: Add APIs for IOMMU PASID management
>
> This adds APIs for IOMMU drivers and device drivers to manage the PASIDs used
> for
> DMA transfer and translation. It bases on I
> From: Alex Williamson [mailto:alex.william...@redhat.com]
> Sent: Friday, February 15, 2019 4:15 AM
> To: Lu Baolu
> Subject: Re: [PATCH v6 0/9] vfio/mdev: IOMMU aware mediated device
>
> On Wed, 13 Feb 2019 12:02:52 +0800
> Lu Baolu wrote:
>
> > Hi,
> >
> > The Mediate Device is a framework
> From: Liu, Yi L
> Sent: Friday, January 31, 2020 8:41 PM
> To: Alex Williamson
> Subject: RE: [RFC v3 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
> > > +static int vfio_iommu_type1_pasid_free(struct vfio_iommu *iommu,
> > > +
e invalidation queue.
>
> Signed-off-by: Jacob Pan
> Signed-off-by: Ashok Raj
> Signed-off-by: Liu, Yi L
May be update my email to Liu Yi L :-) @linux.intel.com
account no more work for me. :-(
> ---
> drivers/iommu/intel-iommu.c | 173
> +++
From: Liu Yi L
For VFIO IOMMUs with the type VFIO_TYPE1_NESTING_IOMMU, guest "owns" the
first-level/stage-1 translation structures, the host IOMMU driver has no
knowledge of first-level/stage-1 structure cache updates unless the guest
invalidation requests are trapped and propagated t
From: Liu Yi L
In Linux Kernel, the IOMMU nesting translation (a.k.a dual stage address
translation) capability is abstracted in uapi/iommu.h, in which the uAPIs
like bind_gpasid/iommu_cache_invalidate/fault_report/pgreq_resp are defined.
VFIO_TYPE1_NESTING_IOMMU stands for the vfio iommu type
From: Liu Yi L
VFIO exposes IOMMU nesting translation (a.k.a dual stage translation)
capability to userspace. Thus applications like QEMU could support
vIOMMU with hardware's nesting translation capability for pass-through
devices. Before setting up nesting translation for pass-through de
From: Liu Yi L
Recent years, mediated device pass-through framework (e.g. vfio-mdev)
are used to achieve flexible device sharing across domains (e.g. VMs).
Also there are hardware assisted mediated pass-through solutions from
platform vendors. e.g. Intel VT-d scalable mode which supports Intel
From: Liu Yi L
For a long time, devices have only one DMA address space from platform
IOMMU's point of view. This is true for both bare metal and directed-
access in virtualization environment. Reason is the source ID of DMA in
PCIe are BDF (bus/dev/fnc ID), which results in only d
From: Liu Yi L
VFIO_TYPE1_NESTING_IOMMU is an IOMMU type which is backed by hardware
IOMMUs that have nesting DMA translation (a.k.a dual stage address
translation). For such hardware IOMMUs, there are two stages/levels of
address translation, and software may let userspace/VM to own the first
From: Liu Yi L
Shared Virtual Addressing (SVA), a.k.a, Shared Virtual Memory (SVM) on
Intel platforms allows address space sharing between device DMA and
applications. SVA can reduce programming complexity and enhance security.
This VFIO series is intended to expose SVA usage to VMs. i.e
From: Liu Yi L
This patch adds a module option to make the PASID quota tunable by
administrator.
TODO: needs to think more on how to make the tuning to be per-process.
Previous discussions:
https://patchwork.kernel.org/patch/11209429/
Cc: Kevin Tian
CC: Jacob Pan
Cc: Alex Williamson
Cc
From: Liu Yi L
This patch reports PASID alloc/free availability to userspace (e.g. QEMU)
thus userspace could do a pre-check before utilizing this feature.
Cc: Kevin Tian
CC: Jacob Pan
Cc: Alex Williamson
Cc: Eric Auger
Cc: Jean-Philippe Brucker
Signed-off-by: Liu Yi L
---
drivers/vfio
From: Liu Yi L
Shared Virtual Addressing (SVA), a.k.a, Shared Virtual Memory (SVM) on
Intel platforms allows address space sharing between device DMA and
applications. SVA can reduce programming complexity and enhance security.
To enable SVA, device needs to have PASID capability, which is a
From: Liu Yi L
Per PCIe r5.0, sec 9.3.7.14, if a PF implements the PASID Capability, the
PF PASID configuration is shared by its VFs. VFs must not implement their
own PASID Capability.
Per PCIe r5.0, sec 9.3.7.11, VFs must not implement the PRI Capability. If
the PF implements PRI, it is
From: Liu Yi L
This patch exposes PCIe PASID capability to guest. Existing vfio_pci
driver hides it from guest by setting the capability length as 0 in
pci_ext_cap_length[].
This capability is required for vSVA enabling on pass-through PCIe
devices.
Cc: Kevin Tian
CC: Jacob Pan
Cc: Alex
> From: Liu, Yi L
> Sent: Sunday, March 22, 2020 8:32 PM
> To: alex.william...@redhat.com; eric.au...@redhat.com
> Subject: [PATCH v1 0/8] vfio: expose virtual Shared Virtual Addressing to VMs
>
> From: Liu Yi L
>
> Shared Virtual Addressing (SVA), a.k.a, Shared Virtual
> From: Tian, Kevin
> Sent: Monday, March 30, 2020 4:41 PM
> To: Liu, Yi L ; alex.william...@redhat.com;
> Subject: RE: [PATCH v1 2/8] vfio/type1: Add vfio_iommu_type1 parameter for
> quota
> tuning
>
> > From: Liu, Yi L
> > Sent: Sunday, March 22, 20
> From: Tian, Kevin
> Sent: Monday, March 30, 2020 5:20 PM
> To: Liu, Yi L ; alex.william...@redhat.com;
> Subject: RE: [PATCH v1 2/8] vfio/type1: Add vfio_iommu_type1 parameter for
> quota
> tuning
>
> > From: Liu, Yi L
> > Sent: Monday, March 30, 2020 4:
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