The patch titled
acpi: add support for AddressRangeUnusuable ACPI memory type
has been added to the -mm tree. Its filename is
acpi-add-support-for-addressrangeunusuable-acpi-memory-type.patch
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Subject: acpi: add support for AddressRangeUnusuable ACPI memory type
From: "Cihula, Joseph" <joseph.cihula@xxxxxxxxx>
Add support for the E820_UNUSABLE memory type, which is defined in
Revision 3.0b (Oct. 10, 2006) of the ACPI Specification on p. 394 Table
14-1:
AddressRangeUnusuable This range of address contains memory in which
errors have been detected. This range must not be used by the OSPM.
Signed-off-by: Joseph Cihula <joseph.cihula@xxxxxxxxx>
Signed-off-by: Shane Wang <shane.wang@xxxxxxxxx>
Signed-off-by: Gang Wei <gang.wei@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/e820.c | 4 ++++
include/asm-x86/e820.h | 1 +
2 files changed, 5 insertions(+)
diff -puN arch/x86/kernel/e820.c~acpi-add-support-for-addressrangeunusuable-acpi-memory-type arch/x86/kernel/e820.c
--- a/arch/x86/kernel/e820.c~acpi-add-support-for-addressrangeunusuable-acpi-memory-type
+++ a/arch/x86/kernel/e820.c
@@ -148,6 +148,9 @@ void __init e820_print_map(char *who)
case E820_NVS:
printk(KERN_CONT "(ACPI NVS)\n");
break;
+ case E820_UNUSABLE:
+ printk("(unusable)\n");
+ break;
default:
printk(KERN_CONT "type %u\n", e820.map[i].type);
break;
@@ -1260,6 +1263,7 @@ static inline const char *e820_type_to_s
case E820_RAM: return "System RAM";
case E820_ACPI: return "ACPI Tables";
case E820_NVS: return "ACPI Non-volatile Storage";
+ case E820_UNUSABLE: return "Unusable memory";
default: return "reserved";
}
}
diff -puN include/asm-x86/e820.h~acpi-add-support-for-addressrangeunusuable-acpi-memory-type include/asm-x86/e820.h
--- a/include/asm-x86/e820.h~acpi-add-support-for-addressrangeunusuable-acpi-memory-type
+++ a/include/asm-x86/e820.h
@@ -43,6 +43,7 @@
#define E820_RESERVED 2
#define E820_ACPI 3
#define E820_NVS 4
+#define E820_UNUSABLE 5
/* reserved RAM used by kernel itself */
#define E820_RESERVED_KERN 128
_
Patches currently in -mm which might be from joseph.cihula@xxxxxxxxx are
acpi-add-support-for-addressrangeunusuable-acpi-memory-type.patch
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