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ARM: 7290/1: vmlinux.lds.S: align the exception fixup table to a 4-byte boundary

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The exception fixup table is currently aligned to a 32-byte boundary.
Whilst this won't cause any problems, the exception_table_entry
structures contain only a pair of unsigned longs, so 4-byte alignment
is all that is required. If the table was walked from start to end,
cacheline alignment may bring some performance benefits, but since a
binary search is used, the access pattern is random and will not benefit
from a stricter alignment.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Will Deacon 2012-01-20 12:01:09 +01:00 • committed by Russell King
parent f0d5375e3c
commit 972da06470
1 changed files with 1 additions and 1 deletions
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2
arch/arm/kernel/vmlinux.lds.S
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@ -219,7 +219,7 @@ SECTIONS
/* /*
* The exception fixup table (might need resorting at runtime) * The exception fixup table (might need resorting at runtime)
*/ */
. = ALIGN(32); . = ALIGN(4);
__start___ex_table = .; __start___ex_table = .;
#ifdef CONFIG_MMU #ifdef CONFIG_MMU
*(__ex_table) *(__ex_table)