| commit | 8f5ca0b3195a9afff448004c2141d01a11f481da | [log] [tgz] |
|---|---|---|
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | Wed Jul 19 14:49:45 2017 +1000 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Thu Aug 03 16:06:51 2017 +1000 |
| tree | 1778a6e1338fb461ad5eb41c640c169e1ba02448 | |
| parent | f43bb27ebf27ee3f90a42a08b86314d0239c30e4 [diff] |
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>