Re: powerpc/Makefile: set -mcpu=860 flag for the 8xx

2018-06-04 Thread Michael Ellerman
On Mon, 2018-05-28 at 06:08:34 UTC, Christophe Leroy wrote: > When compiled with GCC 8.1, vmlinux is significantly bigger than > with GCC 4.8. > > When looking at the generated code with objdump, we notice that > all functions and loops when a 16 bytes alignment. This significantly > increases

[PATCH] powerpc/Makefile: set -mcpu=860 flag for the 8xx

2018-05-28 Thread Christophe Leroy
When compiled with GCC 8.1, vmlinux is significantly bigger than with GCC 4.8. When looking at the generated code with objdump, we notice that all functions and loops when a 16 bytes alignment. This significantly increases the size of the kernel. It is pointless and even counterproductive as on