Hello Robin,
Le 26/06/2024 à 14:09, Robin Murphy a écrit :
> On 2024-06-24 3:36 pm, Teddy Astie wrote:
>> Hello Robin,
>> Thanks for the thourough review.
>>
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 0af39bbbe3a3..242cefac77c9 100644
--- a/drivers/iommu/Kconfi
On 2024-06-24 3:36 pm, Teddy Astie wrote:
Hello Robin,
Thanks for the thourough review.
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 0af39bbbe3a3..242cefac77c9 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -480,6 +480,15 @@ config VIRTIO_IOMMU
Sa
Hi Jason,
On 6/24/2024 9:32 AM, Jason Gunthorpe wrote:
> On Mon, Jun 24, 2024 at 02:36:45PM +, Teddy Astie wrote:
+bool xen_iommu_capable(struct device *dev, enum iommu_cap cap)
+{
+ switch (cap) {
+ case IOMMU_CAP_CACHE_COHERENCY:
+ return true;
>>>
>>> W
On 2024-06-24 6:36 pm, Easwar Hariharan wrote:
Hi Jason,
On 6/24/2024 9:32 AM, Jason Gunthorpe wrote:
On Mon, Jun 24, 2024 at 02:36:45PM +, Teddy Astie wrote:
+bool xen_iommu_capable(struct device *dev, enum iommu_cap cap)
+{
+ switch (cap) {
+ case IOMMU_CAP_CACHE_COHERENCY:
+
On Mon, Jun 24, 2024 at 10:36:13AM -0700, Easwar Hariharan wrote:
> Hi Jason,
>
> On 6/24/2024 9:32 AM, Jason Gunthorpe wrote:
> > On Mon, Jun 24, 2024 at 02:36:45PM +, Teddy Astie wrote:
> +bool xen_iommu_capable(struct device *dev, enum iommu_cap cap)
> +{
> + switch (cap)
On Mon, Jun 24, 2024 at 02:36:45PM +, Teddy Astie wrote:
> >> +bool xen_iommu_capable(struct device *dev, enum iommu_cap cap)
> >> +{
> >> + switch (cap) {
> >> + case IOMMU_CAP_CACHE_COHERENCY:
> >> + return true;
> >
> > Will the PV-IOMMU only ever be exposed on hardware where th
Hello Robin,
Thanks for the thourough review.
>> diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
>> index 0af39bbbe3a3..242cefac77c9 100644
>> --- a/drivers/iommu/Kconfig
>> +++ b/drivers/iommu/Kconfig
>> @@ -480,6 +480,15 @@ config VIRTIO_IOMMU
>> Say Y here if you intend to ru
On 2024-06-21 5:08 pm, TSnake41 wrote:
From: Teddy Astie
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 hyp
From: Teddy Astie
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 implemen
