4.19-stable review patch. If anyone has any objections, please let me know.
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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") Cc: stable@vger.kernel.org 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: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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 @@ -83,6 +83,10 @@ 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;