linux-kernel - [PATCH 3.16 150/328] x86/process: Re-export start

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Message-ID: <lsq.1544392233.560950681@decadent.org.uk>
Date:   Sun, 09 Dec 2018 21:50:33 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Andy Lutomirski" <luto@...nel.org>,
        "Vitaly Kuznetsov" <vkuznets@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        "Thomas Gleixner" <tglx@...utronix.de>,
        "Josh Poimboeuf" <jpoimboe@...hat.com>,
        "Borislav Petkov" <bpetkov@...e.de>,
        "Dmitry Safonov" <dima@...sta.com>,
        "Rian Hunter" <rian@...m.mit.edu>, "Joerg Roedel" <jroedel@...e.de>
Subject: [PATCH 3.16 150/328] x86/process: Re-export start_thread()

3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Rian Hunter <rian@...m.mit.edu>

commit dc76803e57cc86589c4efcb5362918f9b0c0436f upstream.

The consolidation of the start_thread() functions removed the export
unintentionally. This breaks binfmt handlers built as a module.

Add it back.

Fixes: e634d8fc792c ("x86-64: merge the standard and compat start_thread() functions")
Signed-off-by: Rian Hunter <rian@...m.mit.edu>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Borislav Petkov <bpetkov@...e.de>
Cc: Vitaly Kuznetsov <vkuznets@...hat.com>
Cc: Joerg Roedel <jroedel@...e.de>
Cc: Dmitry Safonov <dima@...sta.com>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Link: https://lkml.kernel.org/r/20180819230854.7275-1-rian@alum.mit.edu
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/x86/kernel/process_64.c | 1 +
 1 file changed, 1 insertion(+)

--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -254,6 +254,7 @@ start_thread(struct pt_regs *regs, unsig
 	start_thread_common(regs, new_ip, new_sp,
 			    __USER_CS, __USER_DS, 0);
 }
+EXPORT_SYMBOL_GPL(start_thread);
 
 #ifdef CONFIG_IA32_EMULATION
 void start_thread_ia32(struct pt_regs *regs, u32 new_ip, u32 new_sp)