[Xen-devel] [PATCH v3 10/20] xen/xenbus: Use Xen page definition

[Julien Grall <julien.grall@xxxxxxxxxx>]

All the ring (xenstore, and PV rings) are always based on the page
granularity of Xen.

Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
Reviewed-by: David Vrabel <david.vrabel@xxxxxxxxxx>
Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

---
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>

    Changes in v3:
        - Fix errors reported by checkpatch.pl
        - s/MFN/GFN base on the new naming
        - Add David and Stefano's reviewed-by

    Changes in v2:
        - Also update the ring mapping function
---
 drivers/xen/xenbus/xenbus_client.c | 6 +++---
 drivers/xen/xenbus/xenbus_probe.c  | 3 ++-
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/xen/xenbus/xenbus_client.c 
b/drivers/xen/xenbus/xenbus_client.c
index daa267a..a2f6276 100644
--- a/drivers/xen/xenbus/xenbus_client.c
+++ b/drivers/xen/xenbus/xenbus_client.c
@@ -388,7 +388,7 @@ int xenbus_grant_ring(struct xenbus_device *dev, void 
*vaddr,
                }
                grefs[i] = err;
 
-               vaddr = vaddr + PAGE_SIZE;
+               vaddr = vaddr + XEN_PAGE_SIZE;
        }
 
        return 0;
@@ -555,7 +555,7 @@ static int xenbus_map_ring_valloc_pv(struct xenbus_device 
*dev,
        if (!node)
                return -ENOMEM;
 
-       area = alloc_vm_area(PAGE_SIZE * nr_grefs, ptes);
+       area = alloc_vm_area(XEN_PAGE_SIZE * nr_grefs, ptes);
        if (!area) {
                kfree(node);
                return -ENOMEM;
@@ -750,7 +750,7 @@ static int xenbus_unmap_ring_vfree_pv(struct xenbus_device 
*dev, void *vaddr)
                unsigned long addr;
 
                memset(&unmap[i], 0, sizeof(unmap[i]));
-               addr = (unsigned long)vaddr + (PAGE_SIZE * i);
+               addr = (unsigned long)vaddr + (XEN_PAGE_SIZE * i);
                unmap[i].host_addr = arbitrary_virt_to_machine(
                        lookup_address(addr, &level)).maddr;
                unmap[i].dev_bus_addr = 0;
diff --git a/drivers/xen/xenbus/xenbus_probe.c 
b/drivers/xen/xenbus/xenbus_probe.c
index 3cbe055..33a31cf 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -802,7 +802,8 @@ static int __init xenbus_init(void)
                        goto out_error;
                xen_store_gfn = (unsigned long)v;
                xen_store_interface =
-                       xen_remap(xen_store_gfn << PAGE_SHIFT, PAGE_SIZE);
+                       xen_remap(xen_store_gfn << XEN_PAGE_SHIFT,
+                                 XEN_PAGE_SIZE);
                break;
        default:
                pr_warn("Xenstore state unknown\n");
-- 
2.1.4


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