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authorChris Metcalf <cmetcalf@tilera.com>2010-10-14 20:47:35 +0200
committerChris Metcalf <cmetcalf@tilera.com>2010-10-14 20:47:35 +0200
commit77d233036ea886398770f208aa22235acf0d011c (patch)
treef3edb38ea286885b65cd1e615fddb796d0799c6a /arch
parentarch/tile: update some comments to clarify register usage. (diff)
downloadlinux-77d233036ea886398770f208aa22235acf0d011c.tar.xz
linux-77d233036ea886398770f208aa22235acf0d011c.zip
arch/tile: Add a warning if we try to allocate too much vmalloc memory.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/tile/kernel/setup.c4
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);