2024-10-23 12:12:30 +03:00
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From: Ben Hutchings <ben@decadent.org.uk>
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Date: Mon, 5 Dec 2011 04:00:58 +0000
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Subject: x86: memtest: WARN if bad RAM found
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Bug-Debian: https://bugs.debian.org/613321
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Forwarded: https://lore.kernel.org/all/20120402150522.GA4980@burratino/
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Since this is not a particularly thorough test, if we find any bad
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bits of RAM then there is a fair chance that there are other bad bits
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we fail to detect.
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Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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---
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mm/memtest.c | 2 ++
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1 files changed, 2 insertions(+), 0 deletions(-)
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--- a/mm/memtest.c
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+++ b/mm/memtest.c
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2024-10-29 05:12:06 +03:00
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@@ -31,6 +31,10 @@ static u64 patterns[] __initdata = {
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2024-10-23 12:12:30 +03:00
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static void __init reserve_bad_mem(u64 pattern, phys_addr_t start_bad, phys_addr_t end_bad)
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{
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+#ifdef CONFIG_X86
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+ WARN_ONCE(1, "Bad RAM detected. Use memtest86+ to perform a thorough test\n"
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+ "and the memmap= parameter to reserve the bad areas.");
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+#endif
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pr_info(" %016llx bad mem addr %pa - %pa reserved\n",
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cpu_to_be64(pattern), &start_bad, &end_bad);
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memblock_reserve(start_bad, end_bad - start_bad);
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