xen/grant-table: fix suspend for non-PV guests

Commit aa8532c32216ae07c3813b9aeb774517878a7573 (xen: refactor suspend
pre/post hooks) broke resuming PVHVM (auto-translated physmap) guests.

The gnttab_suspend() would clear the mapping for the grant table
frames, but the ->unmap_frames() call is only applicable to PV guests.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index 6d325bda76da..5d4de88fe5b8 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -1168,7 +1168,8 @@ int gnttab_resume(void)
 
 int gnttab_suspend(void)
 {
-        gnttab_interface->unmap_frames();
+        if (!xen_feature(XENFEAT_auto_translated_physmap))
+                gnttab_interface->unmap_frames();
         return 0;
 }