linux-kernel - linux-next: manual merge of the signal tree with the tip tree

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Date:	Thu, 20 Sep 2012 17:03:30 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>
Subject: linux-next: manual merge of the signal tree with the tip tree

Hi Al,

Today's linux-next merge of the signal tree got a conflict in
arch/x86/kernel/process_32.c between commit 304bceda6a18 ("x86, fpu: use
non-lazy fpu restore for processors supporting xsave") from the tip tree
and commits 450ca1f882ab ("x86: get rid of TIF_IRET hackery") and
5daca7153d68 ("x86, um/x86: switch to generic sys_execve and
kernel_execve") from the signal tree.

I fixed it up (see below) and can carry the fix as necessary (no action
is required).

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

diff --cc arch/x86/kernel/process_32.c
index b9ff83c,9e84b4f..0000000
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@@ -190,6 -190,16 +190,12 @@@ start_thread(struct pt_regs *regs, unsi
  	regs->cs		= __USER_CS;
  	regs->ip		= new_ip;
  	regs->sp		= new_sp;
+ 	regs->flags		= X86_EFLAGS_IF;
+ 	/*
 -	 * Free the old FP and other extended state
 -	 */
 -	free_thread_xstate(current);
 -	/*
+ 	 * force it to the iret return path by making it look as if there was
+ 	 * some work pending.
+ 	 */
+ 	set_thread_flag(TIF_NOTIFY_RESUME);
  }
  EXPORT_SYMBOL_GPL(start_thread);
  

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