linux-kernel - Re: [RFC][PATCH 1/3] TXT: ACPI AddressRangeUnusuable support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Tue, 07 Oct 2008 16:40:02 -0700
From:	Joseph Cihula <joseph.cihula@...ux.intel.com>
To:	linux-kernel@...r.kernel.org
CC:	shane.wang@...el.com, gang.wei@...el.com, arjan@...ux.intel.com,
	asit.k.mallick@...el.com, jun.nakajima@...el.com,
	chrisw@...s-sol.org, jbeulich@...ell.com, mingo@...e.hu,
	tytso@....edu, joseph.cihula@...el.com
Subject: Re: [RFC][PATCH 1/3] TXT: ACPI AddressRangeUnusuable support

(still managed to lose the tabs--let's try one more time ;-( )

(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@...el.com>
Signed-off-by: Shane Wang <shane.wang@...el.com>
Signed-off-by: Gang Wei <gang.wei@...el.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Andi Kleen <andi@...stfloor.org>
Signed-off-by: Andrew Morton <akpm@...ux-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


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/