[PATCH V2] ARM: OMAP2+: Round of the carve out memory requested to section_size

R Sricharan r.sricharan at ti.com
Wed Sep 12 03:14:13 EDT 2012

memblock_steal tries to reserve physical memory during boot.
When the requested size is not aligned on the section size
then, the remaining memory available for lowmem becomes
unaligned on the section boundary. There is a issue with this,
which is discussed in the thread below.


The final conclusion from the thread seems to
be align the memblock_steal calls on the SECTION boundary.
The issue comes out when LPAE is enabled, where the
section size is 2MB.

Boot tested this on OMAP5 evm with and without LPAE.

Signed-off-by: R Sricharan <r.sricharan at ti.com>
 [V2] Corrected the subject and added one more description line.

 arch/arm/mach-omap2/omap-secure.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c
index d9ae4a5..26edfec 100644
--- a/arch/arm/mach-omap2/omap-secure.c
+++ b/arch/arm/mach-omap2/omap-secure.c
@@ -61,8 +61,8 @@ int __init omap_secure_ram_reserve_memblock(void)
-	size = ALIGN(size, SZ_1M);
-	omap_secure_memblock_base = arm_memblock_steal(size, SZ_1M);
+	size = ALIGN(size, SECTION_SIZE);
+	omap_secure_memblock_base = arm_memblock_steal(size, SECTION_SIZE);
 	return 0;

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