On 2022/6/29 09:54, Tian, Kevin wrote:
From: Baolu Lu
Sent: Tuesday, June 28, 2022 7:34 PM
On 2022/6/28 16:50, Tian, Kevin wrote:
From: Baolu Lu
Sent: Tuesday, June 28, 2022 1:41 PM
struct iommu_domain {
unsigned type;
const struct iommu_domain_ops *ops;
unsigned l
> From: Baolu Lu
> Sent: Tuesday, June 28, 2022 7:34 PM
>
> On 2022/6/28 16:50, Tian, Kevin wrote:
> >> From: Baolu Lu
> >> Sent: Tuesday, June 28, 2022 1:41 PM
> struct iommu_domain {
> unsigned type;
> const struct iommu_domain_ops *ops;
> unsig
On 2022/6/28 16:50, Tian, Kevin wrote:
+
+ mutex_lock(&group->mutex);
+ curr = xa_cmpxchg(&group->pasid_array, pasid, NULL, domain,
GFP_KERNEL);
+ if (curr)
+ goto out_unlock;
Need check xa_is_err(old).
Either
(1) old entry is a valid pointer, or
return -EBUSY
On 2022/6/28 16:50, Tian, Kevin wrote:
From: Baolu Lu
Sent: Tuesday, June 28, 2022 1:41 PM
struct iommu_domain {
unsigned type;
const struct iommu_domain_ops *ops;
unsigned long pgsize_bitmap;/* Bitmap of page sizes in use */
- iommu_fault_handler_t handler;
> From: Baolu Lu
> Sent: Tuesday, June 28, 2022 1:41 PM
> >
> >> struct iommu_domain {
> >>unsigned type;
> >>const struct iommu_domain_ops *ops;
> >>unsigned long pgsize_bitmap;/* Bitmap of page sizes in use */
> >> - iommu_fault_handler_t handler;
> >> - void *handler_token;
Hi Kevin,
On 2022/6/27 16:29, Tian, Kevin wrote:
From: Lu Baolu
Sent: Tuesday, June 21, 2022 10:44 PM
The sva iommu_domain represents a hardware pagetable that the IOMMU
hardware could use for SVA translation. This adds some infrastructure
to support SVA domain in the iommu common layer. It in
> From: Lu Baolu
> Sent: Tuesday, June 21, 2022 10:44 PM
>
> The sva iommu_domain represents a hardware pagetable that the IOMMU
> hardware could use for SVA translation. This adds some infrastructure
> to support SVA domain in the iommu common layer. It includes:
>
> - Extend the iommu_domain t
