linux-kernel - [PATCH v3 1/7] arm64: Make basic compat

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Date:   Fri,  6 Jul 2018 22:42:41 -0700
From:   Deepa Dinamani <deepa.kernel@...il.com>
To:     tglx@...utronix.de, linux-kernel@...r.kernel.org
Cc:     arnd@...db.de, y2038@...ts.linaro.org, catalin.marinas@....com
Subject: [PATCH v3 1/7] arm64: Make basic compat_* types always available

As we repurpose more compat syscalls to be used in non CONFIG_COMPAT
usecases as part of solving y2038, we need to make these basic types
available unconditionally.

Signed-off-by: Deepa Dinamani <deepa.kernel@...il.com>
Cc: catalin.marinas@....com
---
 arch/arm64/include/asm/compat.h | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index 1a037b94eba1..2dbb179b5dc4 100644
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -16,21 +16,14 @@
 #ifndef __ASM_COMPAT_H
 #define __ASM_COMPAT_H
 #ifdef __KERNEL__
-#ifdef CONFIG_COMPAT
 
-/*
- * Architecture specific compatibility types
- */
 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/sched/task_stack.h>
 
-#define COMPAT_USER_HZ		100
-#ifdef __AARCH64EB__
-#define COMPAT_UTS_MACHINE	"armv8b\0\0"
-#else
-#define COMPAT_UTS_MACHINE	"armv8l\0\0"
-#endif
+/*
+ * Architecture specific compatibility types
+ */
 
 typedef u32		compat_size_t;
 typedef s32		compat_ssize_t;
@@ -65,6 +58,15 @@ typedef u32		compat_ulong_t;
 typedef u64		compat_u64;
 typedef u32		compat_uptr_t;
 
+#ifdef CONFIG_COMPAT
+
+#define COMPAT_USER_HZ		100
+#ifdef __AARCH64EB__
+#define COMPAT_UTS_MACHINE	"armv8b\0\0"
+#else
+#define COMPAT_UTS_MACHINE	"armv8l\0\0"
+#endif
+
 struct compat_stat {
 #ifdef __AARCH64EB__
 	short		st_dev;
-- 
2.17.1