lkml.org 
[lkml]   [2008]   [Oct]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[RFC][PATCH 1/3] TXT: ACPI AddressRangeUnusuable support
(re-posted with apologies for formatting and email addresses)

Commit message (w/ patch), copied below:

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@intel.com>
Signed-off-by: Shane Wang <shane.wang@intel.com>
Signed-off-by: Gang Wei <gang.wei@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

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


\
 
 \ /
  Last update: 2008-10-08 01:01    [W:0.028 / U:31.208 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site