On Wed, Jan 13, 2021 at 07:12:44AM +0000, Christophe Leroy wrote:
From: Mathieu Desnoyers <[email protected]>Backport for 4.9 and 4.14 (cherry picked from commit d85be8a49e733dcd23674aa6202870d54bf5600d) The placeholder for instruction selection should use the second argument's operand, which is %1, not %0. This could generate incorrect assembly code if the memory addressing of operand %0 is a different form from that of operand %1. Also remove the %Un placeholder because having %Un placeholders for two operands which are based on the same local var (ptep) doesn't make much sense. By the way, it doesn't change the current behaviour because "<>" constraint is missing for the associated "=m". [chleroy: revised commit log iaw segher's comments and removed %U0] Fixes: 9bf2b5cdc5fe ("powerpc: Fixes for CONFIG_PTE_64BIT for SMP support") Cc: <[email protected]> # v2.6.28+ Signed-off-by: Mathieu Desnoyers <[email protected]> Signed-off-by: Christophe Leroy <[email protected]> Acked-by: Segher Boessenkool <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/96354bd77977a6a933fe9020da57629007fdb920.1603358942.git.christophe.le...@csgroup.eu
I took this and the 4.4 backport, thanks! -- Thanks, Sasha
