From 73fbc1eba7ffa3bf0ad12486232a8a1edb4e4411 Mon Sep 17 00:00:00 2001 From: Marcin Nowakowski Date: Wed, 23 Nov 2016 14:43:49 +0100 Subject: MIPS: fix mem=X@Y commandline processing When a memory offset is specified through the commandline, add the memory in range PHYS_OFFSET:Y as reserved memory area. Otherwise the bootmem allocator is initialised with low page equal to min_low_pfn = PHYS_OFFSET, and in free_all_bootmem will process pages starting from min_low_pfn instead of PFN(Y). Signed-off-by: Marcin Nowakowski Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14613/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/setup.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch') diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index c22f0fdd4cfb..ae888662bda3 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -662,6 +662,10 @@ static int __init early_parse_mem(char *p) start = memparse(p + 1, &p); add_memory_region(start, size, BOOT_MEM_RAM); + + if (start && start > PHYS_OFFSET) + add_memory_region(PHYS_OFFSET, start - PHYS_OFFSET, + BOOT_MEM_RESERVED); return 0; } early_param("mem", early_parse_mem); -- cgit v1.2.3