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authorChristopher SMITH <chris.smith@st.com>2008-10-06 12:46:18 +0100
committerPaul Mundt <lethal@linux-sh.org>2009-01-29 11:56:02 +0900
commit48865163109690ed988e2d98d6f258ec743c94c7 (patch)
tree6ccdfa1786764a815dbc5a80f5da76f7e9c41e19 /arch/sh
parentcadc4e1a2b4d20d0cc0e81f2c6ba0588775e54e5 (diff)
sh: Only reserve memory under CONFIG_ZERO_PAGE_OFFSET when it != 0.
Signed-off-by: Chris Smith <chris.smith@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/kernel/setup.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 534247508572..370d2cfa34eb 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -262,11 +262,11 @@ void __init setup_bootmem_allocator(unsigned long free_pfn)
BOOTMEM_DEFAULT);
/*
- * reserve physical page 0 - it's a special BIOS page on many boxes,
- * enabling clean reboots, SMP operation, laptop functions.
+ * Reserve physical pages below CONFIG_ZERO_PAGE_OFFSET.
*/
- reserve_bootmem(__MEMORY_START, CONFIG_ZERO_PAGE_OFFSET,
- BOOTMEM_DEFAULT);
+ if (CONFIG_ZERO_PAGE_OFFSET != 0)
+ reserve_bootmem(__MEMORY_START, CONFIG_ZERO_PAGE_OFFSET,
+ BOOTMEM_DEFAULT);
sparse_memory_present_with_active_regions(0);