arm64: add support for memtest

Add support for memtest command line option.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index ae85da6307bb921e286bb7a99a218cab5dbe137e..597831bdddf3db2c7d8f44e4d33fbc13bcb286cb 100644 (file)
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -190,6 +190,8 @@ void __init bootmem_init(void)
        min = PFN_UP(memblock_start_of_DRAM());
        max = PFN_DOWN(memblock_end_of_DRAM());
 
+       early_memtest(min << PAGE_SHIFT, max << PAGE_SHIFT);
+
        /*
         * Sparsemem tries to allocate bootmem in memory_present(), so must be
         * done after the fixed reservations.