[tip:x86/cleanups] x86/uaccess: Remove unused __addr_ok() macro

From: tip-bot for Borislav Petkov
Date: Mon Feb 25 2019 - 17:43:44 EST

Commit-ID: 2e7614c0736de93c8796bb2d58debb8871a59db8
Gitweb: https://git.kernel.org/tip/2e7614c0736de93c8796bb2d58debb8871a59db8
Author: Borislav Petkov <bp@xxxxxxx>
AuthorDate: Mon, 25 Feb 2019 20:08:27 +0100
Committer: Borislav Petkov <bp@xxxxxxx>
CommitDate: Mon, 25 Feb 2019 23:13:05 +0100

x86/uaccess: Remove unused __addr_ok() macro

This was caught while staring at the whole {set,get}_fs() machinery.

It's last user, the 32-bit version of strnlen_user() went away with

5723aa993d83 ("x86: use the new generic strnlen_user() function")

so drop it.

No functional changes.

Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Acked-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Jann Horn <jannh@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: the arch/x86 maintainers <x86@xxxxxxxxxx>
Cc: "Tobin C. Harding" <tobin@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/20190225191109.7671-1-bp@xxxxxxxxx
arch/x86/include/asm/uaccess.h | 3 ---
1 file changed, 3 deletions(-)

diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index a77445d1b034..ec8d36f04786 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -35,10 +35,7 @@ static inline void set_fs(mm_segment_t fs)

#define segment_eq(a, b) ((a).seg == (b).seg)
#define user_addr_max() (current->thread.addr_limit.seg)
-#define __addr_ok(addr) \
- ((unsigned long __force)(addr) < user_addr_max())

* Test whether a block of memory is a valid user space address.