From: David Daney <david.daney@xxxxxxxxxx>
The MIPS swapper_pg_dir needs 64K alignment for faster TLB refills in
kernel mappings. There are two parts to the patch set:
1) Modify generic vmlinux.lds.h to allow architectures to place
additional sections at the start of .bss. This allows alignment
constraints to be met with minimal holes added for padding.
Putting this in common code should reduce the risk of future
changes to the linker scripts not being propagated to MIPS (or any
other architecture that needs something like this).
2) Align the MIPS swapper_pg_dir.
Since the initial use of the code is for MIPS, perhaps both parts
could be merged by Ralf's tree (after collecting any Acked-bys).
David Daney (2):
vmlinux.lds.h: Allow architectures to add sections to the front of
.bss
MIPS: Align swapper_pg_dir to 64K for better TLB Refill code.
arch/mips/kernel/vmlinux.lds.S | 21 +++++++++++++++++++--
arch/mips/mm/init.c | 17 +++++++++--------
include/asm-generic/vmlinux.lds.h | 9 +++++++++
3 files changed, 37 insertions(+), 10 deletions(-)
--
1.7.2.3
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