diff options
| author | Jason Yan <yanaijie@huawei.com> | 2019-09-20 12:45:35 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-11-13 11:27:24 +0300 |
| commit | 8054df0570588e22007a8be6fa7615462389f27f (patch) | |
| tree | be28613d8feb69b8dc808041d5c46372b173ca01 /arch/powerpc/include/asm/nohash | |
| parent | da0c9ea146cbe92b832f1b0f694840ea8eb33cce (diff) | |
| download | linux-8054df0570588e22007a8be6fa7615462389f27f.tar.xz | |
powerpc: unify definition of M_IF_NEEDED
M_IF_NEEDED is defined too many times. Move it to a common place and
rename it to MAS2_M_IF_NEEDED which is much readable.
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Diana Craciun <diana.craciun@nxp.com>
Tested-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/nohash')
| -rw-r--r-- | arch/powerpc/include/asm/nohash/mmu-book3e.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nohash/mmu-book3e.h b/arch/powerpc/include/asm/nohash/mmu-book3e.h index 4c9777d256fb..fa3efc2d310f 100644 --- a/arch/powerpc/include/asm/nohash/mmu-book3e.h +++ b/arch/powerpc/include/asm/nohash/mmu-book3e.h @@ -221,6 +221,16 @@ #define TLBILX_T_CLASS2 6 #define TLBILX_T_CLASS3 7 +/* + * The mapping only needs to be cache-coherent on SMP, except on + * Freescale e500mc derivatives where it's also needed for coherent DMA. + */ +#if defined(CONFIG_SMP) || defined(CONFIG_PPC_E500MC) +#define MAS2_M_IF_NEEDED MAS2_M +#else +#define MAS2_M_IF_NEEDED 0 +#endif + #ifndef __ASSEMBLY__ #include <asm/bug.h> |