> 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 platform
> > IOMMU's point of view. This is true for both bare metal and
Different endpoint can support different page size, probe
endpoint if it supports specific page size otherwise use
global page sizes.
Signed-off-by: Bharat Bhushan
---
v3->v4:
- Fix whitespace error
v2->v3:
- Fixed error return for incompatible endpoint
- __u64 changed to __le64 in header
Different endpoint can support different page size, probe
endpoint if it supports specific page size otherwise use
global page sizes.
Signed-off-by: Bharat Bhushan
---
drivers/iommu/virtio-iommu.c | 54 +++
include/uapi/linux/virtio_iommu.h | 7
2 files
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 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
On Sun, 22 Mar 2020 05:32:05 -0700
"Liu, Yi L" wrote:
> 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
>
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 "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
On Thu, 2 Apr 2020 02:18:45 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Wednesday, April 1, 2020 11:48 PM
> >
> > On Sat, 28 Mar 2020 10:22:41 +
> > "Tian, Kevin" wrote:
> >
> > > > From: Jacob Pan
> > > > Sent: Saturday, March 21, 2020 7:28 AM
> > > >
> > > > When VT-d
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 (a.k.a dual stage address
> translation). For such hardware IOMMUs, there are two stages/levels of
>
On Sun, 22 Mar 2020 05:32:02 -0700
"Liu, Yi L" wrote:
> 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
>
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
On Sun, 22 Mar 2020 05:32:00 -0700
"Liu, Yi L" wrote:
> 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
On Mon, 30 Mar 2020 11:44:08 +
"Tian, Kevin" wrote:
> > From: Liu, Yi L
> > Sent: Monday, March 30, 2020 5:27 PM
> >
> > > 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
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 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
>
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 driver_deferred_probe_check_state_continue()
> bec6c0e pinctrl: Remove use
On Thu, 2 Apr 2020 14:26:33 +0200
Jean-Philippe Brucker wrote:
> On Wed, Apr 01, 2020 at 04:38:42PM -0700, Jacob Pan wrote:
> > On Wed, 1 Apr 2020 16:03:01 +0200
> > Jean-Philippe Brucker wrote:
> >
> > > Hi Jacob,
> > >
> > > On Wed, Mar 25, 2020 at 10:55:21AM -0700, Jacob Pan wrote:
> >
On Wed, 1 Apr 2020 09:32:37 +0200
Auger Eric wrote:
> > I didn’t read through all comments. Here is a concern with this 2-D
> > table, the iommu cache type is defined as below. I suppose there is
> > a problem here. If I'm using IOMMU_CACHE_INV_TYPE_PASID, it will
> > beyond the 2-D table.
> >
In iommu_probe_device(), we would invoke dev_iommu_free() to free the
dev->iommu after the ->add_device() returns failure. But after commit
72acd9df18f1 ("iommu: Move iommu_fwspec to struct dev_iommu"), we also
need to free the iommu_fwspec before the dev->iommu is freed. This fixes
the following
Release resources when exiting on error.
Signed-off-by: Tang Bin
---
drivers/iommu/qcom_iommu.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c
index 4328da0b0..c08aa9651 100644
--- a/drivers/iommu/qcom_iommu.c
+++
Hi Yi,
On Sun, Mar 22, 2020 at 05:31:58AM -0700, Liu, Yi L wrote:
> 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
On 2020-04-02 11:16 am, Yoshihiro Shimoda wrote:
Hi John,
I found an issue after applied the following patches:
---
64c775f driver core: Rename deferred_probe_timeout and make it global
0e9f8d0 driver core: Remove driver_deferred_probe_check_state_continue()
bec6c0e pinctrl: Remove use of
On Wed, Apr 01, 2020 at 04:38:42PM -0700, Jacob Pan wrote:
> On Wed, 1 Apr 2020 16:03:01 +0200
> Jean-Philippe Brucker wrote:
>
> > Hi Jacob,
> >
> > On Wed, Mar 25, 2020 at 10:55:21AM -0700, Jacob Pan wrote:
> > > IOASID was introduced in v5.5 as a generic kernel allocator service
> > > for
Hi John,
I found an issue after applied the following patches:
---
64c775f driver core: Rename deferred_probe_timeout and make it global
0e9f8d0 driver core: Remove driver_deferred_probe_check_state_continue()
bec6c0e pinctrl: Remove use of driver_deferred_probe_check_state_continue()
e2cec7d
On Thu, Apr 02, 2020 at 03:53:40AM +, Bharat Bhushan wrote:
> > > > +struct virtio_iommu_probe_pgsize_mask {
> > > > + struct virtio_iommu_probe_property head;
> > > > + __u8reserved[4];
> > > > + __u64
> From: Tian, Kevin
> Sent: Thursday, April 2, 2020 10:12 AM
> To: Liu, Yi L ; alex.william...@redhat.com;
> Subject: RE: [PATCH v1 6/8] vfio/type1: Bind guest page tables to host
>
> > From: Liu, Yi L
> > Sent: Wednesday, April 1, 2020 5:13 PM
> >
> > > From: Tian, Kevin
> > > Sent: Monday,
On Wed, Apr 01, 2020 at 03:53:38PM -0700, Eric Dumazet wrote:
>
>
> On 2/2/18 10:59 AM, Eric Dumazet wrote:
> > On Fri, Feb 2, 2018 at 10:53 AM, Christoph Hellwig
> > wrote:
> >> I've got patches pending to replace all that code with
> >> dma_direct_alloc, which will do the right thing. They
On Wed 01 Apr 23:33 PDT 2020, Tang Bin wrote:
> Release resources when exiting on error.
>
Reviewed-by: Bjorn Andersson
Regards,
Bjorn
> Signed-off-by: Tang Bin
> ---
> drivers/iommu/qcom_iommu.c | 5 -
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git
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