Mike Frysinger
9c46e71af2
Blackfin: use scratch pad for exception stack ...
If the memory layout pushes the stack out of the default DCPLB coverage,
the exception handler may trigger a double fault by trying to push onto
the uncovered stack. So handle the exception stack similar to the kernel
by using the top of the scratch pad SRAM.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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