[PATCH v2 2/5] mips: Perform early low memory test

From: Serge Semin
Date: Fri May 03 2019 - 13:52:14 EST

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

Reviewed-by: Matt Redfearn <matt.redfearn@xxxxxxxx>
Signed-off-by: Serge Semin <fancer.lancer@xxxxxxxxx>
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));

+ early_memtest(PFN_PHYS(min_low_pfn), PFN_PHYS(max_low_pfn));

static void __init resource_init(void)