xen/gnttab: Use phys_addr_t to describe the grant frame base address

On ARM, address size can be 32 bits or 64 bits (if CONFIG_ARCH_PHYS_ADDR_T_64BIT
is enabled).
We can't assume that the grant frame base address will always fits in an
unsigned long. Use phys_addr_t instead of unsigned long as argument for
gnttab_setup_auto_xlat_frames.

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 3465f25d7702..b96723e258a0 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -234,7 +234,7 @@ static int __init xen_guest_init(void)
         const char *version = NULL;
         const char *xen_prefix = "xen,xen-";
         struct resource res;
-        unsigned long grant_frames;
+        phys_addr_t grant_frames;
 
         node = of_find_compatible_node(NULL, NULL, "xen,xen");
         if (!node) {
@@ -253,8 +253,8 @@ static int __init xen_guest_init(void)
                 return 0;
         grant_frames = res.start;
         xen_events_irq = irq_of_parse_and_map(node, 0);
-        pr_info("Xen %s support found, events_irq=%d gnttab_frame_pfn=%lx\n",
-                        version, xen_events_irq, (grant_frames >> PAGE_SHIFT));
+        pr_info("Xen %s support found, events_irq=%d gnttab_frame=%pa\n",
+                        version, xen_events_irq, &grant_frames);
 
         if (xen_events_irq < 0)
                 return -ENODEV;