tile: fix tilegx vmalloc_sync_all BUG_ON
As specified, the test wasn't correct, and in any case it should
be a BUILD_BUG_ON.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
diff --git a/arch/tile/mm/fault.c b/arch/tile/mm/fault.c
index f7f99f9..6152819 100644
--- a/arch/tile/mm/fault.c
+++ b/arch/tile/mm/fault.c
@@ -870,7 +870,8 @@
{
#ifdef __tilegx__
/* Currently all L1 kernel pmd's are static and shared. */
- BUG_ON(pgd_index(VMALLOC_END) != pgd_index(VMALLOC_START));
+ BUILD_BUG_ON(pgd_index(VMALLOC_END - PAGE_SIZE) !=
+ pgd_index(VMALLOC_START));
#else
/*
* Note that races in the updates of insync and start aren't