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From: Helge Deller <>
	James Bottomley <>,
	John David Anglin <>
Subject: [PATCH] parisc: Report bad pages as HardwareCorrupted
Date: Fri, 24 Jul 2020 19:17:52 +0200
Message-ID: <> (raw)

The /proc/meminfo file reports physically broken memory pages in the
HardwareCorrupted field. When the parisc kernel boots report physically
bad pages which were recorded in the page deallocation table (PDT) as
HardwareCorrupted too.

Signed-off-by: Helge Deller <>

diff --git a/arch/parisc/kernel/pdt.c b/arch/parisc/kernel/pdt.c
index 6e8550fefad6..fcc761b0e11b 100644
--- a/arch/parisc/kernel/pdt.c
+++ b/arch/parisc/kernel/pdt.c
@@ -18,6 +18,8 @@
 #include <linux/kthread.h>
 #include <linux/initrd.h>
 #include <linux/pgtable.h>
+#include <linux/swap.h>
+#include <linux/swapops.h>

 #include <asm/pdc.h>
 #include <asm/pdcpat.h>
@@ -230,6 +232,7 @@ void __init pdc_pdt_init(void)

 		/* mark memory page bad */
 		memblock_reserve(pdt_entry[i] & PAGE_MASK, PAGE_SIZE);
+		num_poisoned_pages_inc();

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