Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH v5 01/16] powerpc/wii: properly disable use of BATs when requested. | Date | Thu, 21 Feb 2019 19:08:37 +0000 (UTC) |
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'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> --- arch/powerpc/platforms/embedded6xx/wii.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c index ecf703ee3a76..ac4ee88efc80 100644 --- 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(unsigned long top) /* 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; -- 2.13.3
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