tree 4ca4fd3e6801e3b544870c14a883cd7d936e715d
parent 363c701a997cdae95f47df9d6b83110d8f0651a5
author Vikram Kanigiri <vikram.kanigiri@arm.com> 1443105943 +0100
committer Achin Gupta <achin.gupta@arm.com> 1443195310 +0100

Fix relocation of __PERCPU_BAKERY_LOCK_SIZE__

When a platform port does not define PLAT_PERCPU_BAKERY_LOCK_SIZE, the total
memory that should be allocated per-cpu to accommodate all bakery locks is
calculated by the linker in bl31.ld.S. The linker stores this value in the
__PERCPU_BAKERY_LOCK_SIZE__ linker symbol. The runtime value of this symbol is
different from the link time value as the symbol is relocated into the current
section (.bss). This patch fixes this issue by marking the symbol as ABSOLUTE
which allows it to retain its correct value even at runtime.

The description of PLAT_PERCPU_BAKERY_LOCK_SIZE in the porting-guide.md has been
made clearer as well.

Change-Id: Ia0cfd42f51deaf739d792297e60cad5c6e6e610b