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x86/boot/e820: Introduce 'enum e820_type' 

Use an enum instead of CPP #define.

Also fix various small annoyances in the descriptions of the
various E820 types.

No change in functionality.

Cc: Alex Thorlton <athorlton@sgi.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Jackson <pj@sgi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2017-01-28 16:42:39 +01:00
parent c594761d1d
commit 7ad1ed8abc
1 changed files with 31 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
arch/x86/include/asm/e820/types.h
View File

@ -1,6 +1,37 @@
#ifndef _ASM_E820_TYPES_H
#define _ASM_E820_TYPES_H
enum e820_type {
E820_RAM = 1,
E820_RESERVED = 2,
E820_ACPI = 3,
E820_NVS = 4,
E820_UNUSABLE = 5,
E820_PMEM = 7,
/*
* This is a non-standardized way to represent ADR or
* NVDIMM regions that persist over a reboot.
*
* The kernel will ignore their special capabilities
* unless the CONFIG_X86_PMEM_LEGACY=y option is set.
*
* ( Note that older platforms also used 6 for the same
* type of memory, but newer versions switched to 12 as
* 6 was assigned differently. Some time they will learn... )
*/
E820_PRAM = 12,
/*
* Reserved RAM used by the kernel itself if
* CONFIG_INTEL_TXT=y is enabled, memory of this type
* will be included in the S3 integrity calculation
* and so should not include any memory that the BIOS
* might alter over the S3 transition:
*/
E820_RESERVED_KERN = 128,
};
#include <uapi/asm/e820/types.h>
/*
@ -39,32 +70,6 @@
/* Number of entries in E820MAP: */
#define E820NR 0x1e8
#define E820_RAM 1
#define E820_RESERVED 2
#define E820_ACPI 3
#define E820_NVS 4
#define E820_UNUSABLE 5
#define E820_PMEM 7
/*
* This is a non-standardized way to represent ADR or NVDIMM regions that
* persist over a reboot. The kernel will ignore their special capabilities
* unless the CONFIG_X86_PMEM_LEGACY option is set.
*
* ( Note that older platforms also used 6 for the same type of memory,
* but newer versions switched to 12 as 6 was assigned differently. Some
* time they will learn... )
*/
#define E820_PRAM 12
/*
* reserved RAM used by kernel itself
* if CONFIG_INTEL_TXT is enabled, memory of this type will be
* included in the S3 integrity calculation and so should not include
* any memory that BIOS might alter over the S3 transition
*/
#define E820_RESERVED_KERN 128
/*
* The whole array of E820 entries:
*/