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Commit ea697648 authored by Helge Deller's avatar Helge Deller
Browse files

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: default avatarHelge Deller <deller@gmx.de>
parent 8d771b14

arch/parisc/kernel/pdt.c

+9 −0
Original line number Diff line number Diff line
@@ -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);

	}