From 2f5bd0367e7a9e5f5a150500e016a9cb7042803b Mon Sep 17 00:00:00 2001 From: Serge Semin Date: Fri, 3 May 2019 20:50:38 +0300 Subject: [PATCH] mips: Perform early low memory test memblock subsystem provides a method to optionally test the passed memory region in case if it was requested via special kernel boot argument. Lets add the function at the bottom of the arch_mem_init() method. Testing at this point in the boot sequence should be safe since all critical areas are now reserved and a minimum of allocations have been done. Reviewed-by: Matt Redfearn Signed-off-by: Serge Semin Signed-off-by: Paul Burton Cc: Ralf Baechle Cc: James Hogan Cc: Mike Rapoport Cc: Andrew Morton Cc: Michal Hocko Cc: Greg Kroah-Hartman Cc: Thomas Bogendoerfer Cc: Huacai Chen Cc: Stefan Agner Cc: Stephen Rothwell Cc: Alexandre Belloni Cc: Juergen Gross Cc: Serge Semin Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- arch/mips/kernel/setup.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index ca493fdf69b0..fbd216b4e929 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -826,6 +826,8 @@ static void __init arch_mem_init(char **cmdline_p) __pa_symbol(&__nosave_end) - __pa_symbol(&__nosave_begin)); memblock_dump_all(); + + early_memtest(PFN_PHYS(min_low_pfn), PFN_PHYS(max_low_pfn)); } static void __init resource_init(void)