From 2946a52ac7d57c9d02db477e3684259d86446ea7 Mon Sep 17 00:00:00 2001 From: Daniel De Graaf Date: Wed, 14 Dec 2011 15:12:10 -0500 Subject: [PATCH] xenbus: Use grant-table wrapper functions For xenbus_{map,unmap}_ring to work on HVM, the grant table operations must be set up using the gnttab_set_{map,unmap}_op functions instead of directly populating the fields of gnttab_map_grant_ref. These functions simply populate the structure on paravirtualized Xen; however, on HVM they must call __pa() on vaddr when populating op->host_addr because the hypervisor cannot directly interpret guest-virtual addresses. Signed-off-by: Daniel De Graaf [v1: Fixed cleanpatch error] Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/xenbus/xenbus_client.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c index 0fa52916ad0..566d2adbd6e 100644 --- a/drivers/xen/xenbus/xenbus_client.c +++ b/drivers/xen/xenbus/xenbus_client.c @@ -567,12 +567,10 @@ static int xenbus_map_ring_valloc_hvm(struct xenbus_device *dev, int xenbus_map_ring(struct xenbus_device *dev, int gnt_ref, grant_handle_t *handle, void *vaddr) { - struct gnttab_map_grant_ref op = { - .host_addr = (unsigned long)vaddr, - .flags = GNTMAP_host_map, - .ref = gnt_ref, - .dom = dev->otherend_id, - }; + struct gnttab_map_grant_ref op; + + gnttab_set_map_op(&op, (phys_addr_t)vaddr, GNTMAP_host_map, gnt_ref, + dev->otherend_id); if (HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op, 1)) BUG(); @@ -698,10 +696,9 @@ static int xenbus_unmap_ring_vfree_hvm(struct xenbus_device *dev, void *vaddr) int xenbus_unmap_ring(struct xenbus_device *dev, grant_handle_t handle, void *vaddr) { - struct gnttab_unmap_grant_ref op = { - .host_addr = (unsigned long)vaddr, - .handle = handle, - }; + struct gnttab_unmap_grant_ref op; + + gnttab_set_unmap_op(&op, (phys_addr_t)vaddr, GNTMAP_host_map, handle); if (HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, &op, 1)) BUG(); -- 2.41.0