[PATCH v3 9/9] xen: use hw_pte_t for PTE range callbacks

[Muhammad Usama Anjum <usama.anjum@arm.com>]

Generic PTE range and remapping helpers now pass pointers to PTE table
storage as hw_pte_t *. Update the Xen callbacks to match those interfaces.

Keep software PTE values as pte_t and continue to access them through the
existing PTE helpers. This is required when Xen is built for an
architecture that selects the distinct hw_pte_t wrapper.

Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Muhammad Usama Anjum <usama.anjum@arm.com>
---
Changes since v1:
- Use software PTE value terminology.

Changes since RFC v1:
- Clarify why the callback conversion is required after architecture
  opt-in.
---
 drivers/xen/gntdev.c               | 2 +-
 drivers/xen/privcmd.c              | 2 +-
 drivers/xen/xenbus/xenbus_client.c | 2 +-
 drivers/xen/xlate_mmu.c            | 4 ++--
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 1dcc4675580ed..b013bcad99b5b 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -301,7 +301,7 @@ void gntdev_put_map(struct gntdev_priv *priv, struct gntdev_grant_map *map)
 
 /* ------------------------------------------------------------------ */
 
-static int find_grant_ptes(pte_t *pte, unsigned long addr, void *data)
+static int find_grant_ptes(hw_pte_t *pte, unsigned long addr, void *data)
 {
 	struct gntdev_grant_map *map = data;
 	unsigned int pgnr = (addr - map->pages_vm_start) >> PAGE_SHIFT;
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index 7cfc28f1bb86f..e724cc053e264 100644
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -1658,7 +1658,7 @@ static int privcmd_mmap(struct file *file, struct vm_area_struct *vma)
  * on a per pfn/pte basis. Mapping calls that fail with ENOENT
  * can be then retried until success.
  */
-static int is_mapped_fn(pte_t *pte, unsigned long addr, void *data)
+static int is_mapped_fn(hw_pte_t *pte, unsigned long addr, void *data)
 {
 	return pte_none(ptep_get(pte)) ? 0 : -EBUSY;
 }
diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c
index 27682cb5e58ab..387f97a555594 100644
--- a/drivers/xen/xenbus/xenbus_client.c
+++ b/drivers/xen/xenbus/xenbus_client.c
@@ -749,7 +749,7 @@ int xenbus_unmap_ring_vfree(struct xenbus_device *dev, void *vaddr)
 EXPORT_SYMBOL_GPL(xenbus_unmap_ring_vfree);
 
 #ifdef CONFIG_XEN_PV
-static int map_ring_apply(pte_t *pte, unsigned long addr, void *data)
+static int map_ring_apply(hw_pte_t *pte, unsigned long addr, void *data)
 {
 	struct map_ring_valloc *info = data;
 
diff --git a/drivers/xen/xlate_mmu.c b/drivers/xen/xlate_mmu.c
index 8efd7b55223fb..d7244f9f9a545 100644
--- a/drivers/xen/xlate_mmu.c
+++ b/drivers/xen/xlate_mmu.c
@@ -93,7 +93,7 @@ static void setup_hparams(unsigned long gfn, void *data)
 	info->fgfn++;
 }
 
-static int remap_pte_fn(pte_t *ptep, unsigned long addr, void *data)
+static int remap_pte_fn(hw_pte_t *ptep, unsigned long addr, void *data)
 {
 	struct remap_data *info = data;
 	struct page *page = info->pages[info->index++];
@@ -269,7 +269,7 @@ struct remap_pfn {
 	unsigned long i;
 };
 
-static int remap_pfn_fn(pte_t *ptep, unsigned long addr, void *data)
+static int remap_pfn_fn(hw_pte_t *ptep, unsigned long addr, void *data)
 {
 	struct remap_pfn *r = data;
 	struct page *page = r->pages[r->i];

-- 
2.47.3