From 6a5a682d4ad5f7a92ae74da5b1bc86709844ade5 Mon Sep 17 00:00:00 2001
From: Peng Wu <wupeng58@huawei.com>
Date: Wed, 23 Feb 2022 18:45:21 +0800
Subject: [PATCH] mm: Reserve field in mm_struct for memory reliable

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4SK3S
DTS: #896
CVE: NA

-------------------------------------------------

Reserved a variable in mm_struct while will be used by memory reliable.

Signed-off-by: Peng Wu <wupeng58@huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
---
 include/linux/mm_types.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 75a9235f7aa9..1c22e294f083 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -585,6 +585,10 @@ struct mm_struct {
 #ifdef CONFIG_IOMMU_SUPPORT
 		u32 pasid;
 #endif
+
+#ifdef CONFIG_MEMORY_RELIABLE
+		atomic_long_t reserve_0;
+#endif
 	} __randomize_layout;
 
 	KABI_RESERVE(1)
-- 
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