[Xen-devel] [PATCH] xen/grant-table: fix suspend for non-PV guests

[David Vrabel <david.vrabel@xxxxxxxxxx>]

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@xxxxxxxxxx>
---
 drivers/xen/grant-table.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index 6d325bd..5d4de88 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;
 }
 
-- 
1.7.10.4


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