arch/tile: Add a warning if we try to allocate too much vmalloc memory.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index e7d54c73d5c1..c1a697e68546 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -1334,6 +1334,10 @@ static void __init pcpu_fc_populate_pte(unsigned long addr)
         pte_t *pte;
 
         BUG_ON(pgd_addr_invalid(addr));
+        if (addr < VMALLOC_START || addr >= VMALLOC_END)
+                panic("PCPU addr %#lx outside vmalloc range %#lx..%#lx;"
+                      " try increasing CONFIG_VMALLOC_RESERVE\n",
+                      addr, VMALLOC_START, VMALLOC_END);
 
         pgd = swapper_pg_dir + pgd_index(addr);
         pud = pud_offset(pgd, addr);