From: Ben Hutchings Date: Mon, 5 Dec 2011 04:00:58 +0000 Subject: x86: memtest: WARN if bad RAM found Bug-Debian: https://bugs.debian.org/613321 Forwarded: http://thread.gmane.org/gmane.linux.kernel/1286471 Since this is not a particularly thorough test, if we find any bad bits of RAM then there is a fair chance that there are other bad bits we fail to detect. Signed-off-by: Ben Hutchings --- arch/x86/mm/memtest.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/mm/memtest.c b/arch/x86/mm/memtest.c index 92faf3a..ac6bdaa 100644 --- a/arch/x86/mm/memtest.c +++ b/arch/x86/mm/memtest.c @@ -30,6 +30,8 @@ static u64 patterns[] __initdata = { static void __init reserve_bad_mem(u64 pattern, u64 start_bad, u64 end_bad) { + WARN_ONCE(1, "Bad RAM detected. Use memtest86+ to perform a thorough test\n" + "and the memmap= parameter to reserve the bad areas."); printk(KERN_INFO " %016llx bad mem addr %010llx - %010llx reserved\n", (unsigned long long) pattern, (unsigned long long) start_bad,