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| H A D | fault.c | diff 8f5ca0b3195a9afff448004c2141d01a11f481da Tue Jul 18 23:49:45 CDT 2017 Benjamin Herrenschmidt <benh@kernel.crashing.org> powerpc/mm: Cleanup check for stack expansion
When hitting below a VM_GROWSDOWN vma (typically growing the stack),
we check whether it's a valid stack-growing instruction and we
check the distance to GPR1. This is largely open coded with lots
of comments, so move it out to a helper.
While at it, make store_update_sp a boolean.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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