On 6/24/24 7:09 PM, Robin Murphy wrote:
On 2024-06-23 4:21 am, Baolu Lu wrote:
On 6/21/24 11:09 PM, Teddy Astie wrote:
Le 19/06/2024 à 18:30, Jason Gunthorpe a écrit :
On Thu, Jun 13, 2024 at 01:50:22PM +, Teddy Astie wrote:
+struct iommu_domain *xen_iommu_domain_alloc(unsigned type)
+{
On 2024-06-23 4:21 am, Baolu Lu wrote:
On 6/21/24 11:09 PM, Teddy Astie wrote:
Le 19/06/2024 à 18:30, Jason Gunthorpe a écrit :
On Thu, Jun 13, 2024 at 01:50:22PM +, Teddy Astie wrote:
+struct iommu_domain *xen_iommu_domain_alloc(unsigned type)
+{
+ struct xen_iommu_domain *domain;
+
On 6/21/24 11:09 PM, Teddy Astie wrote:
Le 19/06/2024 à 18:30, Jason Gunthorpe a écrit :
On Thu, Jun 13, 2024 at 01:50:22PM +, Teddy Astie wrote:
+struct iommu_domain *xen_iommu_domain_alloc(unsigned type)
+{
+ struct xen_iommu_domain *domain;
+ u16 ctx_no;
+ int ret;
+
+
Hello Jason,
Le 19/06/2024 à 18:30, Jason Gunthorpe a écrit :
> On Thu, Jun 13, 2024 at 01:50:22PM +, Teddy Astie wrote:
>
>> +struct iommu_domain *xen_iommu_domain_alloc(unsigned type)
>> +{
>> +struct xen_iommu_domain *domain;
>> +u16 ctx_no;
>> +int ret;
>> +
>> +if (type &
On Thu, Jun 13, 2024 at 01:50:22PM +, Teddy Astie wrote:
> +struct iommu_domain *xen_iommu_domain_alloc(unsigned type)
> +{
> + struct xen_iommu_domain *domain;
> + u16 ctx_no;
> + int ret;
> +
> + if (type & IOMMU_DOMAIN_IDENTITY) {
> + /* use default domain */
> +
On 17.06.2024 15:36, Teddy Astie wrote:
> Le 13/06/2024 à 16:32, Jan Beulich a écrit :
>> On 13.06.2024 15:50, Teddy Astie wrote:
>>> @@ -214,6 +215,38 @@ struct xen_add_to_physmap_range {
>>> };
>>> DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap_range);
>>>
>>> +/*
>>> + * With some legacy d
Le 13/06/2024 à 16:32, Jan Beulich a écrit :
> On 13.06.2024 15:50, Teddy Astie wrote:
>> @@ -214,6 +215,38 @@ struct xen_add_to_physmap_range {
>> };
>> DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap_range);
>>
>> +/*
>> + * With some legacy devices, certain guest-physical addresses cannot safe
On 13.06.2024 15:50, Teddy Astie wrote:
> @@ -214,6 +215,38 @@ struct xen_add_to_physmap_range {
> };
> DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap_range);
>
> +/*
> + * With some legacy devices, certain guest-physical addresses cannot safely
> + * be used for other purposes, e.g. to map gues
In the context of Xen, Linux runs as Dom0 and doesn't have access to the
machine IOMMU. Although, a IOMMU is mandatory to use some kernel features
such as VFIO or DMA protection.
In Xen, we added a paravirtualized IOMMU with iommu_op hypercall in order
to allow Dom0 to implement such feature. This
