On Wed, 2015-16-09 at 10:04:53 UTC, LEROY Christophe wrote: > memset() uses instruction dcbz to speed up clearing by not wasting time > loading cache line with data that will be overwritten. > Some platform like mpc52xx do no have cache active at startup and > can therefore not use memset(). Allthough no part of the code > explicitly uses memset(), GCC may make calls to it. > > This patch modifies memset() such that at startup, memset() > unconditionally skip the optimised bloc that uses dcbz instruction. > > Once the initial MMU is set up, in machine_init() we patch memset() > by replacing this inconditional jump by a NOP > > Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
Applied to powerpc fixes, thanks. https://git.kernel.org/powerpc/c/400c47d81ca383fc87d5a393 cheers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
