Messages in this thread Patch in this message | | | Subject | [PATCH] acpi - Add support for AddressRangeUnusuable ACPI memory type | Date | Thu, 24 Jul 2008 09:49:57 -0700 | From | "Cihula, Joseph" <> |
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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.
This patch applies cleanly to 2.6.26.
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>
--- linux-2.6.26/arch/x86/kernel/e820_32.c 2008-07-13 14:51:29.000000000 -0700 +++ linux-2.6.26-acpi/arch/x86/kernel/e820_32.c 2008-07-23 13:25:44.000000000 -0700 @@ -198,6 +198,7 @@ case E820_RAM: res->name = "System RAM"; break; case E820_ACPI: res->name = "ACPI Tables"; break; case E820_NVS: res->name = "ACPI Non-volatile Storage"; break; + case E820_UNUSABLE: res->name = "Unusable memory"; break; default: res->name = "reserved"; } res->start = e820.map[i].addr; @@ -604,6 +605,9 @@ case E820_NVS: printk("(ACPI NVS)\n"); break; + case E820_UNUSABLE: + printk("(unusable)\n"); + break; default: printk("type %u\n", e820.map[i].type); break; } --- linux-2.6.26/arch/x86/kernel/e820_64.c 2008-07-13 14:51:29.000000000 -0700 +++ linux-2.6.26-acpi/arch/x86/kernel/e820_64.c 2008-07-23 13:27:29.000000000 -0700 @@ -336,6 +336,7 @@ case E820_RAM: res->name = "System RAM"; break; case E820_ACPI: res->name = "ACPI Tables"; break; case E820_NVS: res->name = "ACPI Non-volatile Storage"; break; + case E820_UNUSABLE: res->name = "Unusable memory"; break; default: res->name = "reserved"; } res->start = e820.map[i].addr; @@ -495,6 +496,9 @@ 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; --- linux-2.6.26/include/asm-x86/e820.h 2008-07-13 14:51:29.000000000 -0700 +++ linux-2.6.26-acpi/include/asm-x86/e820.h 2008-07-23 13:25:44.000000000 -0700 @@ -8,6 +8,7 @@ #define E820_RESERVED 2 #define E820_ACPI 3 #define E820_NVS 4 +#define E820_UNUSABLE 5 #ifndef __ASSEMBLY__ struct e820entry { <<linux-acpi-2.6.26.patch>> [unhandled content-type:application/octet-stream] | |