Re: [RFC v8 03/28] header update against 5.11-rc2 and IOMMU/VFIO nested stage APIs

[Kunkun Jiang <jiangkunkun@huawei.com>]

On 2021/2/25 18:52, Eric Auger wrote:
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> ---
>   .../infiniband/hw/vmw_pvrdma/pvrdma_ring.h    |  14 +-
>   linux-headers/linux/iommu.h                   | 395 ++++++++++++++++++
>   linux-headers/linux/vfio.h                    | 141 ++++++-
>   3 files changed, 542 insertions(+), 8 deletions(-)
>   create mode 100644 linux-headers/linux/iommu.h
>
> diff --git a/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h b/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h
> index 7b4062a1a1..acd4c8346d 100644
> --- a/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h
> +++ b/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h
> @@ -68,7 +68,7 @@ static inline int pvrdma_idx_valid(uint32_t idx, uint32_t max_elems)
>   
>   static inline int32_t pvrdma_idx(int *var, uint32_t max_elems)
>   {
> -	const unsigned int idx = qatomic_read(var);
> +	const unsigned int idx = atomic_read(var);
>   
>   	if (pvrdma_idx_valid(idx, max_elems))
>   		return idx & (max_elems - 1);
> @@ -77,17 +77,17 @@ static inline int32_t pvrdma_idx(int *var, uint32_t max_elems)
>   
>   static inline void pvrdma_idx_ring_inc(int *var, uint32_t max_elems)
>   {
> -	uint32_t idx = qatomic_read(var) + 1;	/* Increment. */
> +	uint32_t idx = atomic_read(var) + 1;	/* Increment. */
>   
>   	idx &= (max_elems << 1) - 1;		/* Modulo size, flip gen. */
> -	qatomic_set(var, idx);
> +	atomic_set(var, idx);
>   }
>   
>   static inline int32_t pvrdma_idx_ring_has_space(const struct pvrdma_ring *r,
>   					      uint32_t max_elems, uint32_t *out_tail)
>   {
> -	const uint32_t tail = qatomic_read(&r->prod_tail);
> -	const uint32_t head = qatomic_read(&r->cons_head);
> +	const uint32_t tail = atomic_read(&r->prod_tail);
> +	const uint32_t head = atomic_read(&r->cons_head);
>   
>   	if (pvrdma_idx_valid(tail, max_elems) &&
>   	    pvrdma_idx_valid(head, max_elems)) {
> @@ -100,8 +100,8 @@ static inline int32_t pvrdma_idx_ring_has_space(const struct pvrdma_ring *r,
>   static inline int32_t pvrdma_idx_ring_has_data(const struct pvrdma_ring *r,
>   					     uint32_t max_elems, uint32_t *out_head)
>   {
> -	const uint32_t tail = qatomic_read(&r->prod_tail);
> -	const uint32_t head = qatomic_read(&r->cons_head);
> +	const uint32_t tail = atomic_read(&r->prod_tail);
> +	const uint32_t head = atomic_read(&r->cons_head);
>   
>   	if (pvrdma_idx_valid(tail, max_elems) &&
>   	    pvrdma_idx_valid(head, max_elems)) {
The atomic_ has been renamed to qatomic_ in the patch d73415a3154.
It seems that the pvrdma_ring.h doesn't need to be updated.

Best Regards.

Kunkun Jiang

> diff --git a/linux-headers/linux/iommu.h b/linux-headers/linux/iommu.h
> new file mode 100644
> index 0000000000..0a6326bd36
> --- /dev/null
> +++ b/linux-headers/linux/iommu.h
[...]
>   /* -------- Additional API for SPAPR TCE (Server POWERPC) IOMMU -------- */
>   
>   /*