| From | Ben Hutchings <> | Date | Sun, 07 Jul 2019 17:54:17 +0100 | Subject | [PATCH 3.16 081/129] powerpc/wii: properly disable use of BATs when requested. |
| |
3.16.70-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Christophe Leroy <christophe.leroy@c-s.fr>
commit 6d183ca8baec983dc4208ca45ece3c36763df912 upstream.
'nobats' kernel parameter or some options like CONFIG_DEBUG_PAGEALLOC deny the use of BATS for mapping memory.
This patch makes sure that the specific wii RAM mapping function takes it into account as well.
Fixes: de32400dd26e ("wii: use both mem1 and mem2 as ram") Reviewed-by: Jonathan Neuschafer <j.neuschaefer@gmx.net> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- arch/powerpc/platforms/embedded6xx/wii.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/arch/powerpc/platforms/embedded6xx/wii.c +++ b/arch/powerpc/platforms/embedded6xx/wii.c @@ -104,6 +104,10 @@ unsigned long __init wii_mmu_mapin_mem2( /* MEM2 64MB@0x10000000 */ delta = wii_hole_start + wii_hole_size; size = top - delta; + + if (__map_without_bats) + return delta; + for (bl = 128<<10; bl < max_size; bl <<= 1) { if (bl * 2 > size) break;
|