linux-kernel - [PATCH 2/2] x86: add e820 descriptor attribute field

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Message-Id: <1362115638-10583-2-git-send-email-lig.fnst@cn.fujitsu.com>
Date:	Fri, 1 Mar 2013 13:27:18 +0800
From:	liguang <lig.fnst@...fujitsu.com>
To:	hpa@...or.com, tglx@...utronix.de, mingo@...hat.com,
	x86@...nel.org, linux-kernel@...r.kernel.org
Cc:	liguang <lig.fnst@...fujitsu.com>
Subject: [PATCH 2/2] x86: add e820 descriptor attribute field

according to ACPI 5.0 Table 15-273
Address Range Descriptor Structure,
offset 20 is 32-bit field of Extended
Attributes for Address Range Descriptor Structure.

Signed-off-by: liguang <lig.fnst@...fujitsu.com>
---
 arch/x86/include/uapi/asm/e820.h |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/uapi/asm/e820.h b/arch/x86/include/uapi/asm/e820.h
index 2d400b1..eb87284 100644
--- a/arch/x86/include/uapi/asm/e820.h
+++ b/arch/x86/include/uapi/asm/e820.h
@@ -38,6 +38,10 @@
 #define E820_TYPE_NVS	4
 #define E820_TYPE_UNUSABLE	5
 
+#define E820_ATTRIB_NV 0x2
+#define E820_ATTRIB_SLOW_ACCESS 0x4
+#define E820_ATTRIB_ERR_LOG 0x8
+
 
 /*
  * reserved RAM used by kernel itself
@@ -53,7 +57,8 @@ struct e820entry {
 	__u64 addr;	/* start of memory segment */
 	__u64 size;	/* size of memory segment */
 	__u32 type;	/* type of memory segment */
-} __attribute__((packed));
+	__u32 attrib;
+};
 
 struct e820map {
 	__u32 nr_map;
-- 
1.7.2.5

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