[RFC][PATCH 1/3] TXT: ACPI AddressRangeUnusuable support

[Cihula, Joseph]

See attached 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@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-m
emory-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-m
emory-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

> --- Begin Message ---
> The patch titled
>      acpi: add support for AddressRangeUnusuable ACPI memory type
> has been removed from the -mm tree.  Its filename was
>      acpi-add-support-for-addressrangeunusuable-acpi-memory-type.patch
>
> This patch was dropped because it was merged into mainline or a subsystem tree
>
> The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
>
> ------------------------------------------------------
> 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
>
> linux-next.patch
>
>
> --- End Message ---