sh: Allow user control over misaligned fixup handling

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This patch brings the SH4 misaligned trap handler in line with what
happens on ARM:
Add a /proc/cpu/alignment which can be read from to get alignment
trap statistics and written to to influence the behaviour of the
alignment trap handling. The value to write is a bitfield, which
has the following meaning: 1 warn, 2 fixup, 4 signal
In addition, we add a /proc/cpu/kernel_alignment, to enable or
disable warnings in case of kernel code causing alignment errors.

Signed-off by: Andre Draszik <andre.draszik@st.com>
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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Andre Draszik 2009-08-24 14:53:46 +09:00 • committed by Paul Mundt

parent 9a4af027a0

commit 7436cde6b2

1 changed files with 153 additions and 0 deletions

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arch/sh/kernel/traps_32.c

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