__pa_symbol is the correct macro to use on kernel
symbols. Switch to this from __pa.

Signed-off-by: Laura Abbott <redacted>
---
Found during a sweep of the kernel. Untested.
---
 drivers/xen/xenbus/xenbus_dev_backend.c | 2 +-
 drivers/xen/xenfs/xenstored.c           | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/xen/xenbus/xenbus_dev_backend.c b/drivers/xen/xenbus/xenbus_dev_backend.c
index 4a41ac9..31ca2bf 100644
--- a/drivers/xen/xenbus/xenbus_dev_backend.c
+++ b/drivers/xen/xenbus/xenbus_dev_backend.c

@@ -99,7 +99,7 @@ static int xenbus_backend_mmap(struct file *file, struct vm_area_struct *vma)
 		return -EINVAL;
 
 	if (remap_pfn_range(vma, vma->vm_start,
-			    virt_to_pfn(xen_store_interface),
+			    PHYS_PFN(__pa_symbol(xen_store_interface)),
 			    size, vma->vm_page_prot))
 		return -EAGAIN;
 

diff --git a/drivers/xen/xenfs/xenstored.c b/drivers/xen/xenfs/xenstored.c
index fef20db..21009ea 100644
--- a/drivers/xen/xenfs/xenstored.c
+++ b/drivers/xen/xenfs/xenstored.c

@@ -38,7 +38,7 @@ static int xsd_kva_mmap(struct file *file, struct vm_area_struct *vma)
 		return -EINVAL;
 
 	if (remap_pfn_range(vma, vma->vm_start,
-			    virt_to_pfn(xen_store_interface),
+			    PHYS_PFN(__pa_symbol(xen_store_interface)),
 			    size, vma->vm_page_prot))
 		return -EAGAIN;