xen: add pages parameter to xen_remap_domain_mfn_range

Also introduce xen_unmap_domain_mfn_range. These are the parts of
Mukesh's "xen/pvh: Implement MMU changes for PVH" which are also
needed as a baseline for ARM privcmd support.

The original patch was:

Signed-off-by: Mukesh Rathor <mukesh.rathor@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

This derivative is also:

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index 8adb9cc267f9..b612267a8cb6 100644
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -178,7 +178,7 @@ static int mmap_mfn_range(void *data, void *state)
                                         msg->va & PAGE_MASK,
                                         msg->mfn, msg->npages,
                                         vma->vm_page_prot,
-                                        st->domain);
+                                        st->domain, NULL);
         if (rc < 0)
                 return rc;
 
@@ -267,7 +267,8 @@ static int mmap_batch_fn(void *data, void *state)
         int ret;
 
         ret = xen_remap_domain_mfn_range(st->vma, st->va & PAGE_MASK, *mfnp, 1,
-                                         st->vma->vm_page_prot, st->domain);
+                                         st->vma->vm_page_prot, st->domain,
+                                         NULL);
 
         /* Store error code for second pass. */
         *(st->err++) = ret;