From: tip-bot for Dmitry Safonov <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: mingo@kernel.org, brgerst@gmail.com, gorcunov@openvz.org,
luto@kernel.org, linux-kernel@vger.kernel.org, hpa@zytor.com,
pebolle@tiscali.nl, dsafonov@virtuozzo.com, peterz@infradead.org,
dvlasenk@redhat.com, bp@alien8.de, jpoimboe@redhat.com,
torvalds@linux-foundation.org, tglx@linutronix.de
Subject: [tip:x86/asm] x86/prctl/uapi: Remove #ifdef for CHECKPOINT_RESTORE
Date: Thu, 27 Oct 2016 23:48:55 -0700 [thread overview]
Message-ID: <tip-a01aa6c9f40fe03c82032e7f8b3bcf1e6c93ac0e@git.kernel.org> (raw)
In-Reply-To: <20161027141516.28447-2-dsafonov@virtuozzo.com>
Commit-ID: a01aa6c9f40fe03c82032e7f8b3bcf1e6c93ac0e
Gitweb: http://git.kernel.org/tip/a01aa6c9f40fe03c82032e7f8b3bcf1e6c93ac0e
Author: Dmitry Safonov <dsafonov@virtuozzo.com>
AuthorDate: Thu, 27 Oct 2016 17:15:15 +0300
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 28 Oct 2016 08:15:55 +0200
x86/prctl/uapi: Remove #ifdef for CHECKPOINT_RESTORE
As userspace knows nothing about kernel config, thus #ifdefs
around ABI prctl constants makes them invisible to userspace.
Let it be clean'n'simple: remove #ifdefs.
If kernel has CONFIG_CHECKPOINT_RESTORE disabled, sys_prctl()
will return -EINVAL for those prctls.
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: 0x7f454c46@gmail.com
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mm@kvack.org
Cc: oleg@redhat.com
Fixes: 2eefd8789698 ("x86/arch_prctl/vdso: Add ARCH_MAP_VDSO_*")
Link: http://lkml.kernel.org/r/20161027141516.28447-2-dsafonov@virtuozzo.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/x86/include/uapi/asm/prctl.h | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/arch/x86/include/uapi/asm/prctl.h b/arch/x86/include/uapi/asm/prctl.h
index ae135de..835aa51 100644
--- a/arch/x86/include/uapi/asm/prctl.h
+++ b/arch/x86/include/uapi/asm/prctl.h
@@ -6,10 +6,8 @@
#define ARCH_GET_FS 0x1003
#define ARCH_GET_GS 0x1004
-#ifdef CONFIG_CHECKPOINT_RESTORE
-# define ARCH_MAP_VDSO_X32 0x2001
-# define ARCH_MAP_VDSO_32 0x2002
-# define ARCH_MAP_VDSO_64 0x2003
-#endif
+#define ARCH_MAP_VDSO_X32 0x2001
+#define ARCH_MAP_VDSO_32 0x2002
+#define ARCH_MAP_VDSO_64 0x2003
#endif /* _ASM_X86_PRCTL_H */
next prev parent reply other threads:[~2016-10-28 6:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-27 14:15 [PATCH 0/2] x86/vdso: small fixups for map_vdso Dmitry Safonov
2016-10-27 14:15 ` [PATCH 1/2] x86/prctl/uapi: remove ifdef for CHECKPOINT_RESTORE Dmitry Safonov
2016-10-28 6:48 ` tip-bot for Dmitry Safonov [this message]
2016-10-27 14:15 ` [PATCH 2/2] x86/vdso: set vdso pointer only after success Dmitry Safonov
2016-10-27 22:25 ` Andy Lutomirski
2016-10-28 6:49 ` [tip:x86/asm] x86/vdso: Set vDSO " tip-bot for Dmitry Safonov
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