Christophe Leroy <christophe.le...@c-s.fr> writes: > Add call to early_memtest() so that kernel compiled with > CONFIG_MEMTEST really perform memtest at startup when requested > via 'memtest' boot parameter. > > Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr> > --- > arch/powerpc/kernel/setup-common.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/powerpc/kernel/setup-common.c > b/arch/powerpc/kernel/setup-common.c > index 93fa0c99681e..904b728eb20d 100644 > --- a/arch/powerpc/kernel/setup-common.c > +++ b/arch/powerpc/kernel/setup-common.c > @@ -33,6 +33,7 @@ > #include <linux/serial_8250.h> > #include <linux/percpu.h> > #include <linux/memblock.h> > +#include <linux/bootmem.h> > #include <linux/of_platform.h> > #include <linux/hugetlb.h> > #include <asm/debugfs.h> > @@ -917,6 +918,8 @@ void __init setup_arch(char **cmdline_p) > /* Parse memory topology */ > mem_topology_setup(); > > + early_memtest(min_low_pfn << PAGE_SHIFT, max_low_pfn << PAGE_SHIFT);
On a ppc64le VM this boils down to early_memtest(0, 0) for me. I think it's too early, we don't set up max_low_pfn until initmem_init(). If I move it after initmem_init() then it does something more useful: early_memtest: # of tests: 17 0x0000000001450580 - 0x0000000001450800 pattern 4c494e5558726c7a 0x0000000001450c00 - 0x0000000003600000 pattern 4c494e5558726c7a 0x00000000047c0000 - 0x000000002fff0000 pattern 4c494e5558726c7a 0x0000000030000000 - 0x000000003ff24000 pattern 4c494e5558726c7a 0x000000003fff4000 - 0x000000003fff4c00 pattern 4c494e5558726c7a 0x000000003fff5000 - 0x000000003fff5300 pattern 4c494e5558726c7a 0x000000003fff5c00 - 0x000000003fff5f00 pattern 4c494e5558726c7a 0x000000003fff6800 - 0x000000003fff6b00 pattern 4c494e5558726c7a 0x000000003fff7400 - 0x000000003fff7700 pattern 4c494e5558726c7a 0x000000003fff8000 - 0x000000003fff8300 pattern 4c494e5558726c7a 0x000000003fff8c00 - 0x000000003fff8f00 pattern 4c494e5558726c7a 0x000000003fff9800 - 0x000000003fff9b00 pattern 4c494e5558726c7a 0x000000003fffa400 - 0x000000003fffa700 pattern 4c494e5558726c7a 0x000000003fffb000 - 0x000000003fffb300 pattern 4c494e5558726c7a 0x000000003fffbc00 - 0x000000003fffbf00 pattern 4c494e5558726c7a 0x000000003fffc800 - 0x000000003fffcb00 pattern 4c494e5558726c7a 0x000000003fffd400 - 0x000000003fffd700 pattern 4c494e5558726c7a 0x000000003fffe000 - 0x000000003fffe100 pattern 4c494e5558726c7a 0x0000000040000000 - 0x00000000ffc10000 pattern 4c494e5558726c7a 0x00000000fffa0000 - 0x00000000fffa5b00 pattern 4c494e5558726c7a 0x0000000100000000 - 0x00000001ffbe0000 pattern 4c494e5558726c7a 0x00000001fff60000 - 0x00000001fff61b00 pattern 4c494e5558726c7a 0x00000001fffec000 - 0x00000001fffec4b8 pattern 4c494e5558726c7a 0x00000001fffec524 - 0x00000001fffec528 pattern 4c494e5558726c7a cheers
