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authorHelge Deller <deller@gmx.de>2017-09-18 17:55:24 +0200
committerHelge Deller <deller@gmx.de>2017-09-22 19:47:00 +0200
commitea6976483fb0ced259fbaa9e4f68a2cdcee7e312 (patch)
treeb7deab0fd220387934c66403fcf614d893ac9d51 /arch/parisc
parent8d771b143fe2e3941fc8a32926d21410004578c0 (diff)
downloadlinux-ea6976483fb0ced259fbaa9e4f68a2cdcee7e312.tar.bz2
parisc: Check if initrd was loaded into broken RAM
While scanning the PDT for reported broken memory modules, warn if the initrd was coincidentally loaded into bad memory. Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/kernel/pdt.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/parisc/kernel/pdt.c b/arch/parisc/kernel/pdt.c
index 05730a83895c..00aed082969b 100644
--- a/arch/parisc/kernel/pdt.c
+++ b/arch/parisc/kernel/pdt.c
@@ -15,6 +15,7 @@
#include <linux/memblock.h>
#include <linux/seq_file.h>
#include <linux/kthread.h>
+#include <linux/initrd.h>
#include <asm/pdc.h>
#include <asm/pdcpat.h>
@@ -216,8 +217,16 @@ void __init pdc_pdt_init(void)
}
for (i = 0; i < pdt_status.pdt_entries; i++) {
+ unsigned long addr;
+
report_mem_err(pdt_entry[i]);
+ addr = pdt_entry[i] & PDT_ADDR_PHYS_MASK;
+ if (IS_ENABLED(CONFIG_BLK_DEV_INITRD) &&
+ addr >= initrd_start && addr < initrd_end)
+ pr_crit("CRITICAL: initrd possibly broken "
+ "due to bad memory!\n");
+
/* mark memory page bad */
memblock_reserve(pdt_entry[i] & PAGE_MASK, PAGE_SIZE);
}