From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Rostedt Subject: [PATCH RT 05/25][RFC 3.0.23-rt39-rc1] x86-64-remove-vsyscall-number-3 Date: Tue, 06 Mar 2012 11:16:41 -0500 Message-ID: <20120306161945.989840517@goodmis.org> References: <20120306161636.491172179@goodmis.org> Cc: Thomas Gleixner , Carsten Emde , John Kacur To: linux-kernel@vger.kernel.org, linux-rt-users Return-path: Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:14848 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755562Ab2CFQTt (ORCPT ); Tue, 6 Mar 2012 11:19:49 -0500 Content-Disposition: inline; filename=0005-x86-64-remove-vsyscall-number-3.patch Sender: linux-rt-users-owner@vger.kernel.org List-ID: From: Andy Lutomirski commit bb5fe2f78eadf5a52d8dcbf9a57728fd107af97b Author: Andy Lutomirski Date: Sun Jun 5 13:50:22 2011 -0400 x86-64: Remove vsyscall number 3 (venosys) It just segfaults since April 2008 (a4928cff), so I'm pretty sure that nothing uses it. And having an empty section makes the linker script a bit fragile. Signed-off-by: Andy Lutomirski Link: http://lkml.kernel.org/r/4a4abcf47ecadc269f2391a313576fe6d06acef7.1307292171.git.luto@mit.edu backport by: Signed-off-by: Steven Rostedt --- arch/x86/kernel/vmlinux.lds.S | 4 ---- arch/x86/kernel/vsyscall_64.c | 5 ----- 2 files changed, 0 insertions(+), 9 deletions(-) diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 89aed99..85d4a06 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -188,10 +188,6 @@ SECTIONS *(.vsyscall_2) } - .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) { - *(.vsyscall_3) - } - #define __VVAR_KERNEL_LDS #include #undef __VVAR_KERNEL_LDS diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c index 3e68218..a2d96c7 100644 --- a/arch/x86/kernel/vsyscall_64.c +++ b/arch/x86/kernel/vsyscall_64.c @@ -222,11 +222,6 @@ vgetcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache) return 0; } -static long __vsyscall(3) venosys_1(void) -{ - return -ENOSYS; -}