Unverified Commit ef1f2258 authored Sep 11, 2018 by Atish Patra Committed by Palmer Dabbelt Oct 02, 2018

RISCV: Fix end PFN for low memory



Use memblock_end_of_DRAM which provides correct last low memory
PFN. Without that, DMA32 region becomes empty resulting in zero
pages being allocated for DMA32.

This patch is based on earlier patch from palmer which never
merged into 4.19. I just edited the commit text to make more
sense.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

parent 17b57b18

arch/riscv/kernel/setup.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -186,7 +186,7 @@ static void __init setup_bootmem(void)
		BUG_ON(mem_size == 0);

		set_max_mapnr(PFN_DOWN(mem_size));
		max_low_pfn = pfn_base + PFN_DOWN(mem_size);
		max_low_pfn = memblock_end_of_DRAM();

		#ifdef CONFIG_BLK_DEV_INITRD
		setup_initrd();