Re: [PATCH v2 09/11] dma-direct: turn ARCH_ZONE_DMA_BITS into a variable
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2019-08-26 11:33:59
Also in:
linux-arch, linux-arm-kernel, linux-devicetree, linux-iommu, linux-riscv, linux-s390, linuxppc-dev, lkml
Nicolas Saenz Julienne [off-list ref] writes:
quoted hunk
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index 0d52f57fca04..73668a21ae78 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h@@ -319,13 +319,4 @@ struct vm_area_struct; #endif /* __ASSEMBLY__ */ #include <asm/slice.h> -/* - * Allow 30-bit DMA for very limited Broadcom wifi chips on many powerbooks.
This comment got lost.
quoted hunk
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 9191a66b3bc5..2a69f87585df 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c@@ -237,9 +238,14 @@ void __init paging_init(void) printk(KERN_DEBUG "Memory hole size: %ldMB\n", (long int)((top_of_ram - total_ram) >> 20)); + if (IS_ENABLED(CONFIG_PPC32))
Can you please propagate it here?
+ zone_dma_bits = 30; + else + zone_dma_bits = 31; +
cheers