at it, guard the call to pci_request_acs() with #ifdef
CONFIG_PCI.
Fixes: 3cf485540e7b ("ACPI: Add driver for the VIOT table")
Signed-off-by: Eric Auger
Reported-by: Jin Liu
---
v1 -> v2:
- guard acpi_viot_early_init() content with #ifdef CONFIG_PCI
- do not call acpi_put_table() if a
Hi Jean
On 6/29/22 11:14, Jean-Philippe Brucker wrote:
> Hi Eric,
>
> On Mon, Jun 27, 2022 at 02:55:34PM +0200, Eric Auger wrote:
>> Currently acpi_viot_init() gets called after the pci
>> device has been scanned and pci_enable_acs() has been called.
>> So pci_requ
: 3cf485540e7b ("ACPI: Add driver for the VIOT table")
Signed-off-by: Eric Auger
Reported-by: Jin Liu
---
drivers/acpi/bus.c| 1 +
drivers/acpi/viot.c | 23 +--
include/linux/acpi_viot.h | 2 ++
3 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/dr
Hi,
On 5/10/22 20:13, Jason Gunthorpe wrote:
> On Tue, May 10, 2022 at 06:52:06PM +0100, Robin Murphy wrote:
>> On 2022-05-10 17:55, Jason Gunthorpe via iommu wrote:
>>> This control causes the ARM SMMU drivers to choose a stage 2
>>> implementation for the IO pagetable (vs the stage 1 usual
Hi Jason,
On 4/12/22 10:22 PM, Jason Gunthorpe wrote:
> On Tue, Apr 12, 2022 at 10:13:32PM +0200, Eric Auger wrote:
>> Hi,
>>
>> On 3/18/22 6:27 PM, Jason Gunthorpe wrote:
>>> iommufd is the user API to control the IOMMU subsystem as it relates to
>>> man
able here:
> https://github.com/luxis1999/iommufd/commits/iommufd-v5.17-rc6
>
> Various parts of the above extended features are in WIP stages currently
> to define how their IOCTL interface should work.
>
> At this point, using the draft VFIO series, unmodified qemu has been
> tested
Hi,
On 3/24/22 1:33 AM, Jason Gunthorpe wrote:
> On Wed, Mar 23, 2022 at 04:51:25PM -0600, Alex Williamson wrote:
>
>> My overall question here would be whether we can actually achieve a
>> compatibility interface that has sufficient feature transparency that we
>> can dump vfio code in favor of
Hi Shameer,
On 2/21/22 4:43 PM, Shameer Kolothum wrote:
> Hi,
>
> Since we now have an updated verion[0] of IORT spec(E.d) which
> addresses the memory attributes issues discussed here [1],
> this series now make use of it.
>
> The pull request for ACPICA E.d related changes are already
> raised
Hi Robin
On 3/11/22 11:34 AM, Robin Murphy wrote:
> On 2022-03-11 08:19, Eric Auger wrote:
>> Hi guys,
>>
>> On 2/21/22 4:43 PM, Shameer Kolothum wrote:
>>> Hi,
>>>
>>> Since we now have an updated verion[0] of IORT spec(E.d) which
>>>
Hi guys,
On 2/21/22 4:43 PM, Shameer Kolothum wrote:
> Hi,
>
> Since we now have an updated verion[0] of IORT spec(E.d) which
> addresses the memory attributes issues discussed here [1],
> this series now make use of it.
>
> The pull request for ACPICA E.d related changes are already
> raised and
layout and the now allowed multiple
RID ID mapping format) and this worked for me. Feel free to add my
Tested-by: Eric Auger
Thanks
Eric
>
> Please take a look and let me know your thoughts.
>
> Thanks,
> Shameer
> [0] https://developer.arm.com/documentation/den0049/ed/
> [1] http
Hi Shameer,
On 2/21/22 4:43 PM, Shameer Kolothum wrote:
> The helper functions here parse through the IORT RMR nodes and
> populate a reserved region list corresponding to a given iommu
> and device(optional). These also go through the ID mappings of
> the RMR node and retrieves all the SIDs
gt; intercepting it in the bus notifier for driver unbinding. We agreed
> that the driver structure should not be used out of the driver core.
> - As iommu_group_claim/release_dma_owner() are only used by the VFIO,
> there're no use cases for multiple calls for a single group.
Hi Lu,
On 3/7/22 4:27 AM, Lu Baolu wrote:
> Hi Robin,
>
> On 3/4/22 10:10 PM, Robin Murphy wrote:
>> On 2022-03-04 13:55, Eric Auger wrote:
>>> Hi Robin,
>>>
>>> On 3/4/22 1:22 PM, Robin Murphy wrote:
>>>> On 2022-03-04 10:43, Lu Baolu wro
Hi Robin,
On 3/4/22 1:22 PM, Robin Murphy wrote:
> On 2022-03-04 10:43, Lu Baolu wrote:
>> Hi Eric,
>>
>> On 2022/3/4 18:34, Eric Auger wrote:
>>> I hit a WARN_ON() when unbinding an e1000e driver just after boot:
>>>
>>> sudo modprobe -v vfio-pci
Hi Lu,
On 2/28/22 1:50 AM, Lu Baolu wrote:
> Multiple devices may be placed in the same IOMMU group because they
> cannot be isolated from each other. These devices must either be
> entirely under kernel control or userspace control, never a mixture.
>
> This adds dma ownership management in
Hi Jason,
On 12/9/21 4:40 PM, Jason Gunthorpe wrote:
> On Thu, Dec 09, 2021 at 08:50:04AM +0100, Eric Auger wrote:
>
>>> The kernel API should accept the S1ContextPtr IPA and all the parts of
>>> the STE that relate to the defining the layout of what the S1Contex
Hi Kevin,
On 12/9/21 4:21 AM, Tian, Kevin wrote:
>> From: Jason Gunthorpe
>> Sent: Wednesday, December 8, 2021 8:56 PM
>>
>> On Wed, Dec 08, 2021 at 08:33:33AM +0100, Eric Auger wrote:
>>> Hi Baolu,
>>>
>>> On 12/8/21 3:44 AM, Lu Baolu wrot
Hi Jason,
On 12/8/21 1:56 PM, Jason Gunthorpe wrote:
> On Wed, Dec 08, 2021 at 08:33:33AM +0100, Eric Auger wrote:
>> Hi Baolu,
>>
>> On 12/8/21 3:44 AM, Lu Baolu wrote:
>>> Hi Eric,
>>>
>>> On 12/7/21 6:22 PM, Eric Auger wrote:
>>>> O
Hi Jason,
On 12/8/21 7:31 PM, Jason Gunthorpe wrote:
> On Wed, Dec 08, 2021 at 05:20:39PM +, Jean-Philippe Brucker wrote:
>> On Wed, Dec 08, 2021 at 08:56:16AM -0400, Jason Gunthorpe wrote:
>>> From a progress perspective I would like to start with simple 'page
>>> tables in userspace', ie no
Hi Baolu,
On 12/8/21 3:44 AM, Lu Baolu wrote:
> Hi Eric,
>
> On 12/7/21 6:22 PM, Eric Auger wrote:
>> On 12/6/21 11:48 AM, Joerg Roedel wrote:
>>> On Wed, Oct 27, 2021 at 12:44:20PM +0200, Eric Auger wrote:
>>>> Signed-off-by: Jean-Philippe Brucker
>>&
Hi Zhangfei,
On 12/7/21 11:35 AM, Zhangfei Gao wrote:
>
>
> On 2021/12/7 下午6:27, Eric Auger wrote:
>> Hi Zhangfei,
>>
>> On 12/3/21 1:27 PM, Zhangfei Gao wrote:
>>> Hi, Eric
>>>
>>> On 2021/10/27 下午6:44, Eric Auger wrote:
>>>
3_v10
>> (use iommu=nested-smmuv3 ARM virt option)
>>
>> Guest dependency:
>> [1] [PATCH v7 0/9] ACPI/IORT: Support for IORT RMR node
>>
>> History:
>>
>> v15 -> v16:
>> - guest RIL must support RIL
>> - additional checks in the cache inv
Hi Zhangfei,
On 12/3/21 1:27 PM, Zhangfei Gao wrote:
>
> Hi, Eric
>
> On 2021/10/27 下午6:44, Eric Auger wrote:
>> This series brings the IOMMU part of HW nested paging support
>> in the SMMUv3.
>>
>> The SMMUv3 driver is adapted to support 2 nested stages.
>&
Hi Joerg,
On 12/6/21 11:48 AM, Joerg Roedel wrote:
> On Wed, Oct 27, 2021 at 12:44:20PM +0200, Eric Auger wrote:
>> Signed-off-by: Jean-Philippe Brucker
>> Signed-off-by: Liu, Yi L
>> Signed-off-by: Ashok Raj
>> Signed-off-by: Jacob Pan
>> Signed-off-by: Eric
gt; currently fail attaching to an identity domain. Future patches will
> instead create identity mappings in this case.
>
> Reviewed-by: Kevin Tian
> Signed-off-by: Jean-Philippe Brucker
Reviewed-by: Eric Auger
Eric
> ---
> drivers/iommu/virtio-iommu.c | 20 +++-
&g
Hi Jean,
On 12/1/21 6:33 PM, Jean-Philippe Brucker wrote:
> Add definitions for the VIRTIO_IOMMU_F_BYPASS_CONFIG, which supersedes
> VIRTIO_IOMMU_F_BYPASS.
>
> Reviewed-by: Kevin Tian
> Signed-off-by: Jean-Philippe Brucker
Reviewed-by: Eric Auger
Eric
> ---
>
vdomain->bypass = true;
> + return 0;
> + }
> +
> + ret = viommu_domain_map_identity(vdev, vdomain);
> + if (ret) {
> ida_free(>domain_ids, vdomain->id);
> - vdomain-
Hi Jean,
On 11/23/21 4:53 PM, Jean-Philippe Brucker wrote:
> To ease identity mapping support, keep the list of reserved regions
> sorted.
>
> Reviewed-by: Kevin Tian
> Signed-off-by: Jean-Philippe Brucker
Reviewed-by: Eric Auger
Eric
> ---
> drivers/iommu/virtio-iommu
e returned size was never true: when
> sweeping the whole address space the returned size will most certainly
> be smaller than 2^64.
>
> Reviewed-by: Kevin Tian
> Signed-off-by: Jean-Philippe Brucker
Reviewed-by: Eric Auger
Eric
> ---
> drivers/iommu/virtio-iommu.c | 31 +
Hi Jean,
On 11/23/21 4:52 PM, Jean-Philippe Brucker wrote:
> The VIRTIO_IOMMU_F_BYPASS_CONFIG feature adds a new flag to the ATTACH
> request, that creates a bypass domain. Use it to enable identity
> domains.
>
> When VIRTIO_IOMMU_F_BYPASS_CONFIG is not supported by the device, we
> currently
Hi Jean,
On 11/23/21 4:52 PM, Jean-Philippe Brucker wrote:
> Add definitions for the VIRTIO_IOMMU_F_BYPASS_CONFIG, which supersedes
> VIRTIO_IOMMU_F_BYPASS.
>
> Reviewed-by: Kevin Tian
> Signed-off-by: Jean-Philippe Brucker
> ---
> include/uapi/linux/virtio_iommu.h | 8 +++-
> 1 file
in such configuration.
Signed-off-by: Eric Auger
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 23 +
1 file changed, 23 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index ddfc069c10ae..12e7d7920f27 100644
Up to now we have only reported translation faults. Now that
the guest can induce some configuration faults, let's report them
too. Add propagation for BAD_SUBSTREAMID, CD_FETCH, BAD_CD, WALK_EABT.
We also fix the transcoding for some existing translation faults.
Signed-off-by: Eric Auger
Implement domain-selective, pasid selective and page-selective
IOTLB invalidations.
Signed-off-by: Eric Auger
---
v15 -> v16:
- make sure the range is set (RIL guest) and check the granule
size is supported by the physical IOMMU
- use cmd_with_sync
v14 -> v15:
- remove the red
With nested stage support, soon we will need to invalidate
S1 contexts and ranges tagged with an unmanaged asid, this
latter being managed by the guest. So let's introduce 2 helpers
that allow to invalidate with externally managed ASIDs
Signed-off-by: Eric Auger
---
v15 -> v16:
-
.
Signed-off-by: Eric Auger
---
v14 -> v15:
- add a comment before arm_smmu_get_cd_ptr to warn the
developper this function must not be used in case of nested
(Keqian)
v13 -> v14:
- on PASID table detach, reset the abort flag (Keqian)
v7 -> v8:
- remove smmu->features check, now do
to write both stage
fields in the STE and deal with the abort field.
In nested mode, only stage 2 is "finalized" as the host does
not own/configure the stage 1 context descriptor; guest does.
Signed-off-by: Eric Auger
---
v13 -> v14:
- removed BUG_ON(ste_live && !nested)
oth stages
are used and the S1 config is "set" when the guest passes
its pasid table.
No functional change intended.
Signed-off-by: Eric Auger
---
v13 -> v14:
- slight reword of the commit message
v12 -> v13:
- does not dynamically allocate s1-cfg and s2_cfg anymore. Add
the se
Add iommu_get_nesting() which allow to retrieve whether a domain
uses nested stages.
Signed-off-by: Eric Auger
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 8
drivers/iommu/arm/arm-smmu/arm-smmu.c | 8
drivers/iommu/intel/iommu.c | 13
.
A generic iommu_pasid_table_config struct is introduced in
a new iommu.h uapi header. This is going to be used by the VFIO
user API.
Signed-off-by: Jean-Philippe Brucker
Signed-off-by: Liu, Yi L
Signed-off-by: Ashok Raj
Signed-off-by: Jacob Pan
Signed-off-by: Eric Auger
---
v13 ->
RMR node
History:
v15 -> v16:
- guest RIL must support RIL
- additional checks in the cache invalidation hook
- removal of the MSI BINDING ioctl (tentative replacement
by RMRs)
Eric Auger (9):
iommu: Introduce attach/detach_pasid_table API
iommu: Introduce iommu_get_nesting
iommu/smm
Hi Shameer,
On 8/5/21 10:07 AM, Shameer Kolothum wrote:
> Hi,
>
> The series adds support to IORT RMR nodes specified in IORT
> Revision E.b -ARM DEN 0049E[0]. RMR nodes are used to describe
> memory ranges that are used by endpoints and require a unity
> mapping in SMMU.
I used your series and
Hi Krishna,
On 9/27/21 11:17 PM, Krishna Reddy wrote:
> Hi Eric,
>> This is based on Jean-Philippe's
>> [PATCH v14 00/10] iommu: I/O page faults for SMMUv3
>> https://www.spinics.net/lists/arm-kernel/msg886518.html
>> (including the patches that were not pulled for 5.13)
>>
> Jean's patches have
Hi,
On 9/22/21 3:00 AM, Jason Gunthorpe wrote:
> On Wed, Sep 22, 2021 at 12:54:02AM +, Tian, Kevin wrote:
>>> From: Jason Gunthorpe
>>> Sent: Wednesday, September 22, 2021 12:01 AM
>>>
One open about how to organize the device nodes under
>>> /dev/vfio/devices/.
This RFC adopts a
Hi,
On 9/19/21 8:38 AM, Liu Yi L wrote:
> From: Lu Baolu
>
> This exposes PAGE_SIZE and ADDR_WIDTH attributes. The iommufd could use
> them to define the IOAS.
>
> Signed-off-by: Lu Baolu
> ---
> include/linux/iommu.h | 4
> 1 file changed, 4 insertions(+)
>
> diff --git
Hi Kevin,
On 8/5/21 2:36 AM, Tian, Kevin wrote:
>> From: Eric Auger
>> Sent: Wednesday, August 4, 2021 11:59 PM
>>
> [...]
>>> 1.2. Attach Device to I/O address space
>>> +++
>>>
>>> Device at
Hi Kevin,
Few comments/questions below.
On 7/9/21 9:48 AM, Tian, Kevin wrote:
> /dev/iommu provides an unified interface for managing I/O page tables for
> devices assigned to userspace. Device passthrough frameworks (VFIO, vDPA,
> etc.) are expected to use this interface instead of creating
n turn calls the acpi_iommu_fwspec_init() helper.
>
> Signed-off-by: Jean-Philippe Brucker
Reviewed-by: Eric Auger
Thanks
Eric
> ---
> include/acpi/acpi_bus.h | 3 ++
> include/linux/acpi_iort.h | 8 ++---
> drivers/acpi/arm64/iort.c | 74 +---
>geometry.
> * they can now be obtained from dev->dma_range_map on Arm.
> But removing them on Arm isn't completely straightforward so is left for
> future work. As an intermediate step, simplify the x86 callers by
> passing dummy limits.
>
> Signed-off-by: Je
at the
> moment. Similarly to Vt-d and AMD IOMMU, call iommu_setup_dma_ops() from
> probe_finalize().
>
> Acked-by: Joerg Roedel
> Acked-by: Michael S. Tsirkin
> Signed-off-by: Jean-Philippe Brucker
Reviewed-by: Eric Auger
Eric
> ---
> drivers/iommu/Kconfig| 3
setup_dma_ops().
>
> Signed-off-by: Jean-Philippe Brucker
Reviewed-by: Eric Auger
Eric
> ---
> drivers/iommu/amd/iommu.c | 9 +
> drivers/iommu/dma-iommu.c | 4 +++-
> drivers/iommu/intel/iommu.c | 10 +-
> 3 files changed, 5 insertions(+), 18 deletions
Hi Jean,
On 6/10/21 9:51 AM, Jean-Philippe Brucker wrote:
> Passing a 64-bit address width to iommu_setup_dma_ops() is valid on
> virtual platforms, but isn't currently possible. The overflow check in
> iommu_dma_init_domain() prevents this even when @dma_base isn't 0. Pass
> a limit address
();
> +
> + return viot_dev_iommu_init(>dev, ep->viommu,
> +epid);
> + }
> + }
> + return -ENODEV;
> +}
> +
> +static int viot_mmio_dev_iommu_init(struct platform_device *pdev)
> +{
> + struct resource *mem;
> + struct viot_endpoint *ep;
> +
> + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!mem)
> + return -ENODEV;
> +
> + list_for_each_entry(ep, _mmio_endpoints, list) {
> + if (ep->address == mem->start)
> + return viot_dev_iommu_init(>dev, ep->viommu,
> +ep->endpoint_id);
> + }
> + return -ENODEV;
> +}
> +
> +/**
> + * viot_iommu_configure - Setup IOMMU ops for an endpoint described by VIOT
> + * @dev: the endpoint
> + *
> + * Return: 0 on success, <0 on failure
> + */
> +int viot_iommu_configure(struct device *dev)
> +{
> + if (dev_is_pci(dev))
> + return pci_for_each_dma_alias(to_pci_dev(dev),
> + viot_pci_dev_iommu_init, NULL);
> + else if (dev_is_platform(dev))
> + return viot_mmio_dev_iommu_init(to_platform_device(dev));
> + return -ENODEV;
> +}
> diff --git a/MAINTAINERS b/MAINTAINERS
> index b706dd20ff2b..8d71591f979a 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -431,6 +431,14 @@ W: https://01.org/linux-acpi
> B: https://bugzilla.kernel.org
> F: drivers/acpi/acpi_video.c
>
> +ACPI VIOT DRIVER
> +M: Jean-Philippe Brucker
> +L: linux-a...@vger.kernel.org
> +L: iommu@lists.linux-foundation.org
> +S: Maintained
> +F: drivers/acpi/viot.c
> +F: include/linux/acpi_viot.h
> +
> ACPI WMI DRIVER
> L: platform-driver-...@vger.kernel.org
> S: Orphan
Besides
Reviewed-by: Eric Auger
Thanks
Eric
___
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
> https://lore.kernel.org/linux-iommu/2021060215.1077006-1-jean-phili...@linaro.org/
> [2] https://jpbrucker.net/git/qemu/log/?h=virtio-iommu/acpi
> [3] https://jpbrucker.net/git/linux/log/?h=virtio-iommu/acpi
I tested the series on both aarch64 and x86_64 with qemu. It works for me.
t;
> Signed-off-by: Jean-Philippe Brucker
Reviewed-by: Eric Auger
Eric
> ---
> drivers/acpi/arm64/Makefile | 1 +
> include/linux/acpi.h| 3 +++
> include/linux/acpi_iort.h | 6 ++---
> drivers/acpi/arm64/dma.c| 50 ++
&g
Hi jean,
On 6/10/21 9:51 AM, Jean-Philippe Brucker wrote:
> Extract the code that sets up the IOMMU infrastructure from IORT, since
> it can be reused by VIOT. Move it one level up into a new
> acpi_iommu_configure_id() function, which calls the IORT parsing
> function which in turn calls the
Hi Kevin,
On 6/9/21 11:37 AM, Tian, Kevin wrote:
>> From: Eric Auger
>> Sent: Wednesday, June 9, 2021 4:15 PM
>>
>> Hi Kevin,
>>
>> On 6/7/21 4:58 AM, Tian, Kevin wrote:
>>> Hi, all,
>>>
>>> We plan to work on v2 now, given
Hi Kevin,
On 6/7/21 4:58 AM, Tian, Kevin wrote:
> Hi, all,
>
> We plan to work on v2 now, given many good comments already received
> and substantial changes envisioned. This is a very complex topic with
> many sub-threads being discussed. To ensure that I didn't miss valuable
> suggestions (and
When the userspace increments the head of the page response
buffer ring, let's push the response into the iommu layer.
This is done through a workqueue that pops the responses from
the ring buffer and increment the tail.
Signed-off-by: Eric Auger
---
drivers/vfio/pci/vfio_pci.c | 40
In preparation for vSVA, let's register a DMA fault response region,
where the userspace will push the page responses and increment the
head of the buffer. The kernel will pop those responses and inject them
on iommu side.
Signed-off-by: Eric Auger
---
v11 -> v12:
- use DMA_FAULT_RESPONSE
The VFIO API was enhanced to support nested stage control: a bunch of
new iotcls, one DMA FAULT region and an associated specific IRQ.
Let's document the process to follow to set up nested mode.
Signed-off-by: Eric Auger
---
v11 -> v12:
s/VFIO_REGION_INFO_CAP_PRODUCER_FA
Register the VFIO_IRQ_TYPE_NESTED/VFIO_IRQ_SUBTYPE_DMA_FAULT
IRQ that allows to signal a nested mode DMA fault.
Signed-off-by: Eric Auger
---
v10 -> v11:
- the irq now is registered in vfio_pci_dma_fault_init()
in case the domain is nested
---
drivers/vfio/pci/vfio_pci.c |
Add a new IRQ type/subtype to get notification on nested
stage DMA faults.
Signed-off-by: Eric Auger
---
include/uapi/linux/vfio.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 0728b6f3f348..ad7c275b4074 100644
--- a/include
Implement IRQ capability chain infrastructure. All interrupt
indexes beyond VFIO_PCI_NUM_IRQS are handled as extended
interrupts. They are registered with a specific type/subtype
and supported flags.
Signed-off-by: Eric Auger
---
v11 -> v12:
- check !vdev->num_ex
From: Tina Zhang
Caps the number of irqs with fixed indexes and uses capability chains
to chain device specific irqs.
Signed-off-by: Tina Zhang
Signed-off-by: Eric Auger
[Eric: Put cap_offset at the end of the vfio_irq_info struct,
remove GFX IRQ at the moment and remove any reference
The DMA FAULT region contains the fault ring buffer.
There is benefit to let the userspace mmap this area.
Expose this mmappable area through a sparse mmap entry
and implement the mmap operation.
Signed-off-by: Eric Auger
---
v8 -> v9:
- remove unused index local varia
Register an IOMMU fault handler which records faults in
the DMA FAULT region ring buffer. In a subsequent patch, we
will add the signaling of a specific eventfd to allow the
userspace to be notified whenever a new fault has shown up.
Signed-off-by: Eric Auger
---
v11 -> v12:
- t
, entry size). At the moment the region is dimensionned
for 512 fault records.
Signed-off-by: Eric Auger
---
v11 -> v12:
- set fault_pages to NULL after free
- check new_tail >= header->nb_entries (Zenghui)
- update value of VFIO_REGION_TYPE_NESTED
- handle the case where the domain is NU
This patch adds the VFIO_IOMMU_SET_MSI_BINDING ioctl which aim
to (un)register the guest MSI binding to the host. This latter
then can use those stage 1 bindings to build a nested stage
binding targeting the physical MSIs.
Signed-off-by: Eric Auger
---
v11 -> v12:
- Share VFIO_BASE +
DATE ioctl with aims
at propagating guest stage1 IOMMU cache invalidations to the host.
Signed-off-by: Liu, Yi L
Signed-off-by: Eric Auger
---
v12 -> v13:
- resolve minor conflict due to
898b9eaeb3fe ("vfio/type1: block on invalid vaddr")
v11 -> v12:
- share VFIO_BASE + 19 with VFI
From: "Liu, Yi L"
This patch adds an VFIO_IOMMU_SET_PASID_TABLE ioctl
which aims to pass the virtual iommu guest configuration
to the host. This latter takes the form of the so-called
PASID table.
Signed-off-by: Jacob Pan
Signed-off-by: Liu, Yi L
Signed-off-by: Eric Auger
---
ponse region
- Took into account Zenghui's comments
- In this version I have kept the ioctl separate. Since
Yi's series [2] is currently stalled, I've just rebased here.
[2] [PATCH v7 00/16] vfio: expose virtual Shared Virtual Addressing
to VMs
v9 -> v10
- rebase on top of 5.6.0-rc3 (no change vers
Up to now we have only reported translation faults. Now that
the guest can induce some configuration faults, let's report them
too. Add propagation for BAD_SUBSTREAMID, CD_FETCH, BAD_CD, WALK_EABT.
We also fix the transcoding for some existing translation faults.
Signed-off-by: Eric Auger
The bind/unbind_guest_msi() callbacks check the domain
is NESTED and redirect to the dma-iommu implementation.
Signed-off-by: Eric Auger
---
v6 -> v7:
- remove device handle argument
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 43 +
1 file changed, 43 inserti
Nested mode currently is not compatible with HW MSI reserved regions.
Indeed MSI transactions targeting this MSI doorbells bypass the SMMU.
Let's check nested mode is not attempted in such configuration.
Signed-off-by: Eric Auger
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 23
into the correct
physical doorbell. So let's forbid this situation.
Signed-off-by: Eric Auger
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 41 +
1 file changed, 41 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
ectly mapped through both stages.
Nested mode is not compatible with HW MSI regions as in that
case gDB and hDB should have a 1-1 mapping. This check will
be done when attaching each device to the IOMMU domain.
Signed-off-by: Eric Auger
---
v14 -> v15:
Took into account Zenghui's comments
- re
Implement domain-selective, pasid selective and page-selective
IOTLB invalidations.
Signed-off-by: Eric Auger
---
v4 -> v15:
- remove the redundant arm_smmu_cmdq_issue_sync(smmu)
in IOMMU_INV_GRANU_ADDR case (Zenghui)
- if RIL is not supported by the host, make sure the granule_s
With nested stage support, soon we will need to invalidate
S1 contexts and ranges tagged with an unmanaged asid, this
latter being managed by the guest. So let's introduce 2 helpers
that allow to invalidate with externally managed ASIDs
Signed-off-by: Eric Auger
---
v14 -> v15:
- Always s
.
Signed-off-by: Eric Auger
---
v14 -> v15:
- add a comment before arm_smmu_get_cd_ptr to warn the
developper this function must not be used in case of nested
(Keqian)
v13 -> v14:
- on PASID table detach, reset the abort flag (Keqian)
v7 -> v8:
- remove smmu->features check, now do
oth stages
are used and the S1 config is "set" when the guest passes
its pasid table.
No functional change intended.
Signed-off-by: Eric Auger
---
v13 -> v14:
- slight reword of the commit message
v12 -> v13:
- does not dynamically allocate s1-cfg and s2_cfg anymore. Add
the se
nd similarly
a single virtual doorbell mapping gets registered (1 single
virtual doorbell is used on guest as well).
Signed-off-by: Eric Auger
---
v13 -> v14:
- s/iova/giova in iommu_unbind_guest_msi proto (Kequian)
v7 -> v8:
- dummy iommu_unbind_guest_msi turned into a void function
.
A generic iommu_pasid_table_config struct is introduced in
a new iommu.h uapi header. This is going to be used by the VFIO
user API.
Signed-off-by: Jean-Philippe Brucker
Signed-off-by: Liu, Yi L
Signed-off-by: Ashok Raj
Signed-off-by: Jacob Pan
Signed-off-by: Eric Auger
---
v13 ->
;device structure"
according to the last version
v11 -> v12:
- rebase on top of v5.10-rc4
Eric Auger (12):
iommu: Introduce attach/detach_pasid_table API
iommu: Introduce bind/unbind_guest_msi
iommu/smmuv3: Allow s1 and s2 configs to coexist
iommu/smmuv3: Get prepared for nes
Register the VFIO_IRQ_TYPE_NESTED/VFIO_IRQ_SUBTYPE_DMA_FAULT
IRQ that allows to signal a nested mode DMA fault.
Signed-off-by: Eric Auger
---
v10 -> v11:
- the irq now is registered in vfio_pci_dma_fault_init()
in case the domain is nested
---
drivers/vfio/pci/vfio_pci.c |
When the userspace increments the head of the page response
buffer ring, let's push the response into the iommu layer.
This is done through a workqueue that pops the responses from
the ring buffer and increment the tail.
Signed-off-by: Eric Auger
---
drivers/vfio/pci/vfio_pci.c | 40
In preparation for vSVA, let's register a DMA fault response region,
where the userspace will push the page responses and increment the
head of the buffer. The kernel will pop those responses and inject them
on iommu side.
Signed-off-by: Eric Auger
---
v11 -> v12:
- use DMA_FAULT_RESPONSE
Implement IRQ capability chain infrastructure. All interrupt
indexes beyond VFIO_PCI_NUM_IRQS are handled as extended
interrupts. They are registered with a specific type/subtype
and supported flags.
Signed-off-by: Eric Auger
---
v11 -> v12:
- check !vdev->num_ex
The VFIO API was enhanced to support nested stage control: a bunch of
new iotcls, one DMA FAULT region and an associated specific IRQ.
Let's document the process to follow to set up nested mode.
Signed-off-by: Eric Auger
---
v11 -> v12:
s/VFIO_REGION_INFO_CAP_PRODUCER_FA
The DMA FAULT region contains the fault ring buffer.
There is benefit to let the userspace mmap this area.
Expose this mmappable area through a sparse mmap entry
and implement the mmap operation.
Signed-off-by: Eric Auger
---
v8 -> v9:
- remove unused index local varia
Register an IOMMU fault handler which records faults in
the DMA FAULT region ring buffer. In a subsequent patch, we
will add the signaling of a specific eventfd to allow the
userspace to be notified whenever a new fault has shown up.
Signed-off-by: Eric Auger
---
v11 -> v12:
- t
Add a new IRQ type/subtype to get notification on nested
stage DMA faults.
Signed-off-by: Eric Auger
---
include/uapi/linux/vfio.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 3688215843fe..f0eea0f9305a 100644
--- a/include
ntfd and expose the faults through an mmappable fault region
v1 -> v2:
- Added the fault reporting capability
- asid properly passed on invalidation (fix assignment of multiple
devices)
- see individual change logs for more info
Eric Auger (10):
vfio: VFIO_IOMMU_SET_MSI_BINDING
vfio
From: "Liu, Yi L"
This patch adds an VFIO_IOMMU_SET_PASID_TABLE ioctl
which aims to pass the virtual iommu guest configuration
to the host. This latter takes the form of the so-called
PASID table.
Signed-off-by: Jacob Pan
Signed-off-by: Liu, Yi L
Signed-off-by: Eric Auger
---
This patch adds the VFIO_IOMMU_SET_MSI_BINDING ioctl which aim
to (un)register the guest MSI binding to the host. This latter
then can use those stage 1 bindings to build a nested stage
binding targeting the physical MSIs.
Signed-off-by: Eric Auger
---
v11 -> v12:
- Share VFIO_BASE +
, entry size). At the moment the region is dimensionned
for 512 fault records.
Signed-off-by: Eric Auger
---
v11 -> v12:
- set fault_pages to NULL after free
- check new_tail >= header->nb_entries (Zenghui)
- update value of VFIO_REGION_TYPE_NESTED
- handle the case where the domain is NU
DATE ioctl with aims
at propagating guest stage1 IOMMU cache invalidations to the host.
Signed-off-by: Liu, Yi L
Signed-off-by: Eric Auger
---
v11 -> v12:
- share VFIO_BASE + 19 with VFIO_IOMMU_SPAPR_TCE_CREATE
v10 -> v11:
- renamed ustruct into cache_inv
v8 -> v9:
- change the ioctl ID
In preparation for vSVA, let's accept userspace provided configs
with more than one CD. We check the max CD against the host iommu
capability and also the format (linear versus 2 level).
Signed-off-by: Eric Auger
Signed-off-by: Shameer Kolothum
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
ectly mapped through both stages.
Nested mode is not compatible with HW MSI regions as in that
case gDB and hDB should have a 1-1 mapping. This check will
be done when attaching each device to the IOMMU domain.
Signed-off-by: Eric Auger
---
v10 -> v11:
- fix compilation if !CONFIG_IOMMU_DMA
v7 -
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