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[Xen-devel] [PATCH] xen/balloon: remove BUG_ON in increase_reservation

The BUG_ON in increase_reservation is wrong as we have P2M entry
ballooned out page set to balloon scratch page, so it might have a valid
P2M entry at that point.

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
 drivers/xen/balloon.c |    2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 3101cf6..b52df76 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -349,8 +349,6 @@ static enum bp_state increase_reservation(unsigned long 
                BUG_ON(page == NULL);
                pfn = page_to_pfn(page);
-               BUG_ON(!xen_feature(XENFEAT_auto_translated_physmap) &&
-                      phys_to_machine_mapping_valid(pfn));
                set_phys_to_machine(pfn, frame_list[i]);

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