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  3. [PATCH 0/7] VIRTIO-IOMMU/HostIOMMUDevice: Fixes and page size mask rework
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[PATCH 4/7] HostIOMMUDevice: Introduce get_page_size_mask() callback

Eric Auger posted 7 patches 5 months ago
Maintainers: Alex Williamson <alex.williamson@redhat.com>, "Cédric Le Goater" <clg@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Eric Auger <eric.auger@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Peter Xu <peterx@redhat.com>, David Hildenbrand <david@redhat.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Yi Liu <yi.l.liu@intel.com>, Zhenzhong Duan <zhenzhong.duan@intel.com>
There is a newer version of this series
[PATCH 4/7] HostIOMMUDevice: Introduce get_page_size_mask() callback
Posted by Eric Auger 5 months ago 
This callback will be used to retrieve the page size mask supported
along a given Host IOMMU device.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 include/hw/vfio/vfio-container-base.h |  7 +++++++
 include/sysemu/host_iommu_device.h    |  8 ++++++++
 hw/vfio/container.c                   | 10 ++++++++++
 hw/vfio/iommufd.c                     | 11 +++++++++++
 4 files changed, 36 insertions(+)

diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h
index 45d7c40fce..62a8b60d87 100644
--- a/include/hw/vfio/vfio-container-base.h
+++ b/include/hw/vfio/vfio-container-base.h
@@ -88,6 +88,13 @@ int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer,
 
 GList *vfio_container_get_iova_ranges(const VFIOContainerBase *bcontainer);
 
+static inline uint64_t
+vfio_container_get_page_size_mask(const VFIOContainerBase *bcontainer)
+{
+    assert(bcontainer);
+    return bcontainer->pgsizes;
+}
+
 #define TYPE_VFIO_IOMMU "vfio-iommu"
 #define TYPE_VFIO_IOMMU_LEGACY TYPE_VFIO_IOMMU "-legacy"
 #define TYPE_VFIO_IOMMU_SPAPR TYPE_VFIO_IOMMU "-spapr"
diff --git a/include/sysemu/host_iommu_device.h b/include/sysemu/host_iommu_device.h
index 05c7324a0d..c1bf74ae2c 100644
--- a/include/sysemu/host_iommu_device.h
+++ b/include/sysemu/host_iommu_device.h
@@ -89,6 +89,14 @@ struct HostIOMMUDeviceClass {
      * @hiod: handle to the host IOMMU device
      */
     GList* (*get_iova_ranges)(HostIOMMUDevice *hiod);
+    /**
+     *
+     * @get_page_size_mask: Return the page size mask supported along this
+     * @hiod Host IOMMU device
+     *
+     * @hiod: handle to the host IOMMU device
+     */
+    uint64_t (*get_page_size_mask)(HostIOMMUDevice *hiod);
 };
 
 /*
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index adeab1ac89..b5ce559a0d 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -1174,6 +1174,15 @@ hiod_legacy_vfio_get_iova_ranges(HostIOMMUDevice *hiod)
     return vfio_container_get_iova_ranges(vdev->bcontainer);
 }
 
+static uint64_t
+hiod_legacy_vfio_get_page_size_mask(HostIOMMUDevice *hiod)
+{
+    VFIODevice *vdev = hiod->agent;
+
+    g_assert(vdev);
+    return vfio_container_get_page_size_mask(vdev->bcontainer);
+}
+
 static void vfio_iommu_legacy_instance_init(Object *obj)
 {
     VFIOContainer *container = VFIO_IOMMU_LEGACY(obj);
@@ -1188,6 +1197,7 @@ static void hiod_legacy_vfio_class_init(ObjectClass *oc, void *data)
     hioc->realize = hiod_legacy_vfio_realize;
     hioc->get_cap = hiod_legacy_vfio_get_cap;
     hioc->get_iova_ranges = hiod_legacy_vfio_get_iova_ranges;
+    hioc->get_page_size_mask = hiod_legacy_vfio_get_page_size_mask;
 };
 
 static const TypeInfo types[] = {
diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
index 211e7223f1..7b5f87a148 100644
--- a/hw/vfio/iommufd.c
+++ b/hw/vfio/iommufd.c
@@ -652,12 +652,23 @@ hiod_iommufd_vfio_get_iova_ranges(HostIOMMUDevice *hiod)
     return vfio_container_get_iova_ranges(vdev->bcontainer);
 }
 
+static uint64_t
+hiod_iommufd_vfio_get_page_size_mask(HostIOMMUDevice *hiod)
+{
+    VFIODevice *vdev = hiod->agent;
+
+    g_assert(vdev);
+    return vfio_container_get_page_size_mask(vdev->bcontainer);
+}
+
+
 static void hiod_iommufd_vfio_class_init(ObjectClass *oc, void *data)
 {
     HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc);
 
     hiodc->realize = hiod_iommufd_vfio_realize;
     hiodc->get_iova_ranges = hiod_iommufd_vfio_get_iova_ranges;
+    hiodc->get_page_size_mask = hiod_iommufd_vfio_get_page_size_mask;
 };
 
 static const TypeInfo types[] = {
-- 
2.41.0
RE: [PATCH 4/7] HostIOMMUDevice: Introduce get_page_size_mask() callback
Posted by Duan, Zhenzhong 5 months ago 
Hi Eric,

>-----Original Message-----
>From: Eric Auger <eric.auger@redhat.com>
>Subject: [PATCH 4/7] HostIOMMUDevice: Introduce get_page_size_mask()
>callback
>
>This callback will be used to retrieve the page size mask supported
>along a given Host IOMMU device.
>
>Signed-off-by: Eric Auger <eric.auger@redhat.com>
>---
> include/hw/vfio/vfio-container-base.h |  7 +++++++
> include/sysemu/host_iommu_device.h    |  8 ++++++++
> hw/vfio/container.c                   | 10 ++++++++++
> hw/vfio/iommufd.c                     | 11 +++++++++++
> 4 files changed, 36 insertions(+)
>
>diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-
>container-base.h
>index 45d7c40fce..62a8b60d87 100644
>--- a/include/hw/vfio/vfio-container-base.h
>+++ b/include/hw/vfio/vfio-container-base.h
>@@ -88,6 +88,13 @@ int vfio_container_query_dirty_bitmap(const
>VFIOContainerBase *bcontainer,
>
> GList *vfio_container_get_iova_ranges(const VFIOContainerBase
>*bcontainer);
>
>+static inline uint64_t
>+vfio_container_get_page_size_mask(const VFIOContainerBase *bcontainer)
>+{
>+    assert(bcontainer);
>+    return bcontainer->pgsizes;
>+}
>+
> #define TYPE_VFIO_IOMMU "vfio-iommu"
> #define TYPE_VFIO_IOMMU_LEGACY TYPE_VFIO_IOMMU "-legacy"
> #define TYPE_VFIO_IOMMU_SPAPR TYPE_VFIO_IOMMU "-spapr"
>diff --git a/include/sysemu/host_iommu_device.h
>b/include/sysemu/host_iommu_device.h
>index 05c7324a0d..c1bf74ae2c 100644
>--- a/include/sysemu/host_iommu_device.h
>+++ b/include/sysemu/host_iommu_device.h
>@@ -89,6 +89,14 @@ struct HostIOMMUDeviceClass {
>      * @hiod: handle to the host IOMMU device
>      */
>     GList* (*get_iova_ranges)(HostIOMMUDevice *hiod);
>+    /**
>+     *
>+     * @get_page_size_mask: Return the page size mask supported along
>this
>+     * @hiod Host IOMMU device
>+     *
>+     * @hiod: handle to the host IOMMU device
>+     */
>+    uint64_t (*get_page_size_mask)(HostIOMMUDevice *hiod);

Not sure if it's simpler to utilize existing .get_cap() to get pgsizes.

Thanks
Zhenzhong

> };
>
> /*
>diff --git a/hw/vfio/container.c b/hw/vfio/container.c
>index adeab1ac89..b5ce559a0d 100644
>--- a/hw/vfio/container.c
>+++ b/hw/vfio/container.c
>@@ -1174,6 +1174,15 @@
>hiod_legacy_vfio_get_iova_ranges(HostIOMMUDevice *hiod)
>     return vfio_container_get_iova_ranges(vdev->bcontainer);
> }
>
>+static uint64_t
>+hiod_legacy_vfio_get_page_size_mask(HostIOMMUDevice *hiod)
>+{
>+    VFIODevice *vdev = hiod->agent;
>+
>+    g_assert(vdev);
>+    return vfio_container_get_page_size_mask(vdev->bcontainer);
>+}
>+
> static void vfio_iommu_legacy_instance_init(Object *obj)
> {
>     VFIOContainer *container = VFIO_IOMMU_LEGACY(obj);
>@@ -1188,6 +1197,7 @@ static void
>hiod_legacy_vfio_class_init(ObjectClass *oc, void *data)
>     hioc->realize = hiod_legacy_vfio_realize;
>     hioc->get_cap = hiod_legacy_vfio_get_cap;
>     hioc->get_iova_ranges = hiod_legacy_vfio_get_iova_ranges;
>+    hioc->get_page_size_mask = hiod_legacy_vfio_get_page_size_mask;
> };
>
> static const TypeInfo types[] = {
>diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
>index 211e7223f1..7b5f87a148 100644
>--- a/hw/vfio/iommufd.c
>+++ b/hw/vfio/iommufd.c
>@@ -652,12 +652,23 @@
>hiod_iommufd_vfio_get_iova_ranges(HostIOMMUDevice *hiod)
>     return vfio_container_get_iova_ranges(vdev->bcontainer);
> }
>
>+static uint64_t
>+hiod_iommufd_vfio_get_page_size_mask(HostIOMMUDevice *hiod)
>+{
>+    VFIODevice *vdev = hiod->agent;
>+
>+    g_assert(vdev);
>+    return vfio_container_get_page_size_mask(vdev->bcontainer);
>+}
>+
>+
> static void hiod_iommufd_vfio_class_init(ObjectClass *oc, void *data)
> {
>     HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc);
>
>     hiodc->realize = hiod_iommufd_vfio_realize;
>     hiodc->get_iova_ranges = hiod_iommufd_vfio_get_iova_ranges;
>+    hiodc->get_page_size_mask = hiod_iommufd_vfio_get_page_size_mask;
> };
>
> static const TypeInfo types[] = {
>--
>2.41.0
Re: [PATCH 4/7] HostIOMMUDevice: Introduce get_page_size_mask() callback
Posted by Eric Auger 5 months ago 
Hi Zhenzhong,

On 6/27/24 05:06, Duan, Zhenzhong wrote:
> Hi Eric,
>
>> -----Original Message-----
>> From: Eric Auger <eric.auger@redhat.com>
>> Subject: [PATCH 4/7] HostIOMMUDevice: Introduce get_page_size_mask()
>> callback
>>
>> This callback will be used to retrieve the page size mask supported
>> along a given Host IOMMU device.
>>
>> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>> ---
>> include/hw/vfio/vfio-container-base.h |  7 +++++++
>> include/sysemu/host_iommu_device.h    |  8 ++++++++
>> hw/vfio/container.c                   | 10 ++++++++++
>> hw/vfio/iommufd.c                     | 11 +++++++++++
>> 4 files changed, 36 insertions(+)
>>
>> diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-
>> container-base.h
>> index 45d7c40fce..62a8b60d87 100644
>> --- a/include/hw/vfio/vfio-container-base.h
>> +++ b/include/hw/vfio/vfio-container-base.h
>> @@ -88,6 +88,13 @@ int vfio_container_query_dirty_bitmap(const
>> VFIOContainerBase *bcontainer,
>>
>> GList *vfio_container_get_iova_ranges(const VFIOContainerBase
>> *bcontainer);
>>
>> +static inline uint64_t
>> +vfio_container_get_page_size_mask(const VFIOContainerBase *bcontainer)
>> +{
>> +    assert(bcontainer);
>> +    return bcontainer->pgsizes;
>> +}
>> +
>> #define TYPE_VFIO_IOMMU "vfio-iommu"
>> #define TYPE_VFIO_IOMMU_LEGACY TYPE_VFIO_IOMMU "-legacy"
>> #define TYPE_VFIO_IOMMU_SPAPR TYPE_VFIO_IOMMU "-spapr"
>> diff --git a/include/sysemu/host_iommu_device.h
>> b/include/sysemu/host_iommu_device.h
>> index 05c7324a0d..c1bf74ae2c 100644
>> --- a/include/sysemu/host_iommu_device.h
>> +++ b/include/sysemu/host_iommu_device.h
>> @@ -89,6 +89,14 @@ struct HostIOMMUDeviceClass {
>>      * @hiod: handle to the host IOMMU device
>>      */
>>     GList* (*get_iova_ranges)(HostIOMMUDevice *hiod);
>> +    /**
>> +     *
>> +     * @get_page_size_mask: Return the page size mask supported along
>> this
>> +     * @hiod Host IOMMU device
>> +     *
>> +     * @hiod: handle to the host IOMMU device
>> +     */
>> +    uint64_t (*get_page_size_mask)(HostIOMMUDevice *hiod);
> Not sure if it's simpler to utilize existing .get_cap() to get pgsizes.
I chose to introduce a new callback because the page_mask can be U64_MAX
and get_cap is likely to return a negative value. So we could not
distinguish between an error and a full mask.

Thanks

Eric

>
> Thanks
> Zhenzhong
>
>> };
>>
>> /*
>> diff --git a/hw/vfio/container.c b/hw/vfio/container.c
>> index adeab1ac89..b5ce559a0d 100644
>> --- a/hw/vfio/container.c
>> +++ b/hw/vfio/container.c
>> @@ -1174,6 +1174,15 @@
>> hiod_legacy_vfio_get_iova_ranges(HostIOMMUDevice *hiod)
>>     return vfio_container_get_iova_ranges(vdev->bcontainer);
>> }
>>
>> +static uint64_t
>> +hiod_legacy_vfio_get_page_size_mask(HostIOMMUDevice *hiod)
>> +{
>> +    VFIODevice *vdev = hiod->agent;
>> +
>> +    g_assert(vdev);
>> +    return vfio_container_get_page_size_mask(vdev->bcontainer);
>> +}
>> +
>> static void vfio_iommu_legacy_instance_init(Object *obj)
>> {
>>     VFIOContainer *container = VFIO_IOMMU_LEGACY(obj);
>> @@ -1188,6 +1197,7 @@ static void
>> hiod_legacy_vfio_class_init(ObjectClass *oc, void *data)
>>     hioc->realize = hiod_legacy_vfio_realize;
>>     hioc->get_cap = hiod_legacy_vfio_get_cap;
>>     hioc->get_iova_ranges = hiod_legacy_vfio_get_iova_ranges;
>> +    hioc->get_page_size_mask = hiod_legacy_vfio_get_page_size_mask;
>> };
>>
>> static const TypeInfo types[] = {
>> diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
>> index 211e7223f1..7b5f87a148 100644
>> --- a/hw/vfio/iommufd.c
>> +++ b/hw/vfio/iommufd.c
>> @@ -652,12 +652,23 @@
>> hiod_iommufd_vfio_get_iova_ranges(HostIOMMUDevice *hiod)
>>     return vfio_container_get_iova_ranges(vdev->bcontainer);
>> }
>>
>> +static uint64_t
>> +hiod_iommufd_vfio_get_page_size_mask(HostIOMMUDevice *hiod)
>> +{
>> +    VFIODevice *vdev = hiod->agent;
>> +
>> +    g_assert(vdev);
>> +    return vfio_container_get_page_size_mask(vdev->bcontainer);
>> +}
>> +
>> +
>> static void hiod_iommufd_vfio_class_init(ObjectClass *oc, void *data)
>> {
>>     HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc);
>>
>>     hiodc->realize = hiod_iommufd_vfio_realize;
>>     hiodc->get_iova_ranges = hiod_iommufd_vfio_get_iova_ranges;
>> +    hiodc->get_page_size_mask = hiod_iommufd_vfio_get_page_size_mask;
>> };
>>
>> static const TypeInfo types[] = {
>> --
>> 2.41.0
RE: [PATCH 4/7] HostIOMMUDevice: Introduce get_page_size_mask() callback
Posted by Duan, Zhenzhong 5 months ago 

>-----Original Message-----
>From: Eric Auger <eric.auger@redhat.com>
>Subject: Re: [PATCH 4/7] HostIOMMUDevice: Introduce
>get_page_size_mask() callback
>
>Hi Zhenzhong,
>
>On 6/27/24 05:06, Duan, Zhenzhong wrote:
>> Hi Eric,
>>
>>> -----Original Message-----
>>> From: Eric Auger <eric.auger@redhat.com>
>>> Subject: [PATCH 4/7] HostIOMMUDevice: Introduce get_page_size_mask()
>>> callback
>>>
>>> This callback will be used to retrieve the page size mask supported
>>> along a given Host IOMMU device.
>>>
>>> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>>> ---
>>> include/hw/vfio/vfio-container-base.h |  7 +++++++
>>> include/sysemu/host_iommu_device.h    |  8 ++++++++
>>> hw/vfio/container.c                   | 10 ++++++++++
>>> hw/vfio/iommufd.c                     | 11 +++++++++++
>>> 4 files changed, 36 insertions(+)
>>>
>>> diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-
>>> container-base.h
>>> index 45d7c40fce..62a8b60d87 100644
>>> --- a/include/hw/vfio/vfio-container-base.h
>>> +++ b/include/hw/vfio/vfio-container-base.h
>>> @@ -88,6 +88,13 @@ int vfio_container_query_dirty_bitmap(const
>>> VFIOContainerBase *bcontainer,
>>>
>>> GList *vfio_container_get_iova_ranges(const VFIOContainerBase
>>> *bcontainer);
>>>
>>> +static inline uint64_t
>>> +vfio_container_get_page_size_mask(const VFIOContainerBase
>*bcontainer)
>>> +{
>>> +    assert(bcontainer);
>>> +    return bcontainer->pgsizes;
>>> +}
>>> +
>>> #define TYPE_VFIO_IOMMU "vfio-iommu"
>>> #define TYPE_VFIO_IOMMU_LEGACY TYPE_VFIO_IOMMU "-legacy"
>>> #define TYPE_VFIO_IOMMU_SPAPR TYPE_VFIO_IOMMU "-spapr"
>>> diff --git a/include/sysemu/host_iommu_device.h
>>> b/include/sysemu/host_iommu_device.h
>>> index 05c7324a0d..c1bf74ae2c 100644
>>> --- a/include/sysemu/host_iommu_device.h
>>> +++ b/include/sysemu/host_iommu_device.h
>>> @@ -89,6 +89,14 @@ struct HostIOMMUDeviceClass {
>>>      * @hiod: handle to the host IOMMU device
>>>      */
>>>     GList* (*get_iova_ranges)(HostIOMMUDevice *hiod);
>>> +    /**
>>> +     *
>>> +     * @get_page_size_mask: Return the page size mask supported along
>>> this
>>> +     * @hiod Host IOMMU device
>>> +     *
>>> +     * @hiod: handle to the host IOMMU device
>>> +     */
>>> +    uint64_t (*get_page_size_mask)(HostIOMMUDevice *hiod);
>> Not sure if it's simpler to utilize existing .get_cap() to get pgsizes.
>I chose to introduce a new callback because the page_mask can be
>U64_MAX
>and get_cap is likely to return a negative value. So we could not
>distinguish between an error and a full mask.

I see, you are right.

Thanks
Zhenzhong
Re: [PATCH 4/7] HostIOMMUDevice: Introduce get_page_size_mask() callback
Posted by Cédric Le Goater 5 months ago 
On 6/26/24 10:26 AM, Eric Auger wrote:
> This callback will be used to retrieve the page size mask supported
> along a given Host IOMMU device.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>


Reviewed-by: Cédric Le Goater <clg@redhat.com>

Thanks,

C.


> ---
>   include/hw/vfio/vfio-container-base.h |  7 +++++++
>   include/sysemu/host_iommu_device.h    |  8 ++++++++
>   hw/vfio/container.c                   | 10 ++++++++++
>   hw/vfio/iommufd.c                     | 11 +++++++++++
>   4 files changed, 36 insertions(+)
> 
> diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h
> index 45d7c40fce..62a8b60d87 100644
> --- a/include/hw/vfio/vfio-container-base.h
> +++ b/include/hw/vfio/vfio-container-base.h
> @@ -88,6 +88,13 @@ int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer,
>   
>   GList *vfio_container_get_iova_ranges(const VFIOContainerBase *bcontainer);
>   
> +static inline uint64_t
> +vfio_container_get_page_size_mask(const VFIOContainerBase *bcontainer)
> +{
> +    assert(bcontainer);
> +    return bcontainer->pgsizes;
> +}
> +
>   #define TYPE_VFIO_IOMMU "vfio-iommu"
>   #define TYPE_VFIO_IOMMU_LEGACY TYPE_VFIO_IOMMU "-legacy"
>   #define TYPE_VFIO_IOMMU_SPAPR TYPE_VFIO_IOMMU "-spapr"
> diff --git a/include/sysemu/host_iommu_device.h b/include/sysemu/host_iommu_device.h
> index 05c7324a0d..c1bf74ae2c 100644
> --- a/include/sysemu/host_iommu_device.h
> +++ b/include/sysemu/host_iommu_device.h
> @@ -89,6 +89,14 @@ struct HostIOMMUDeviceClass {
>        * @hiod: handle to the host IOMMU device
>        */
>       GList* (*get_iova_ranges)(HostIOMMUDevice *hiod);
> +    /**
> +     *
> +     * @get_page_size_mask: Return the page size mask supported along this
> +     * @hiod Host IOMMU device
> +     *
> +     * @hiod: handle to the host IOMMU device
> +     */
> +    uint64_t (*get_page_size_mask)(HostIOMMUDevice *hiod);
>   };
>   
>   /*
> diff --git a/hw/vfio/container.c b/hw/vfio/container.c
> index adeab1ac89..b5ce559a0d 100644
> --- a/hw/vfio/container.c
> +++ b/hw/vfio/container.c
> @@ -1174,6 +1174,15 @@ hiod_legacy_vfio_get_iova_ranges(HostIOMMUDevice *hiod)
>       return vfio_container_get_iova_ranges(vdev->bcontainer);
>   }
>   
> +static uint64_t
> +hiod_legacy_vfio_get_page_size_mask(HostIOMMUDevice *hiod)
> +{
> +    VFIODevice *vdev = hiod->agent;
> +
> +    g_assert(vdev);
> +    return vfio_container_get_page_size_mask(vdev->bcontainer);
> +}
> +
>   static void vfio_iommu_legacy_instance_init(Object *obj)
>   {
>       VFIOContainer *container = VFIO_IOMMU_LEGACY(obj);
> @@ -1188,6 +1197,7 @@ static void hiod_legacy_vfio_class_init(ObjectClass *oc, void *data)
>       hioc->realize = hiod_legacy_vfio_realize;
>       hioc->get_cap = hiod_legacy_vfio_get_cap;
>       hioc->get_iova_ranges = hiod_legacy_vfio_get_iova_ranges;
> +    hioc->get_page_size_mask = hiod_legacy_vfio_get_page_size_mask;
>   };
>   
>   static const TypeInfo types[] = {
> diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
> index 211e7223f1..7b5f87a148 100644
> --- a/hw/vfio/iommufd.c
> +++ b/hw/vfio/iommufd.c
> @@ -652,12 +652,23 @@ hiod_iommufd_vfio_get_iova_ranges(HostIOMMUDevice *hiod)
>       return vfio_container_get_iova_ranges(vdev->bcontainer);
>   }
>   
> +static uint64_t
> +hiod_iommufd_vfio_get_page_size_mask(HostIOMMUDevice *hiod)
> +{
> +    VFIODevice *vdev = hiod->agent;
> +
> +    g_assert(vdev);
> +    return vfio_container_get_page_size_mask(vdev->bcontainer);
> +}
> +
> +
>   static void hiod_iommufd_vfio_class_init(ObjectClass *oc, void *data)
>   {
>       HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc);
>   
>       hiodc->realize = hiod_iommufd_vfio_realize;
>       hiodc->get_iova_ranges = hiod_iommufd_vfio_get_iova_ranges;
> +    hiodc->get_page_size_mask = hiod_iommufd_vfio_get_page_size_mask;
>   };
>   
>   static const TypeInfo types[] = {

Patchew 2.1-devel-b67e4c2

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