linux-kernel - [PATCH] ix86: in kernel context print control and debug registers too

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Message-Id: <4F58889202000078000770E7@nat28.tlf.novell.com>
Date:	Thu, 08 Mar 2012 09:23:14 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	<mingo@...e.hu>, <tglx@...utronix.de>, <hpa@...or.com>
Cc:	<linux-kernel@...r.kernel.org>
Subject: [PATCH] ix86: in kernel context print control and debug
 registers too

While for a user mode register dump it may be reasonable to skip those
(albeit x86-64 doesn't do so), for kernel mode dumps these should be
printed to make sure all information possibly necessary for analysis is
available.

Signed-off-by: Jan Beulich <jbeulich@...e.com>

---
 arch/x86/kernel/dumpstack_32.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 3.3-rc6/arch/x86/kernel/dumpstack_32.c
+++ 3.3-rc6-ix86-kernel-show-all-regs/arch/x86/kernel/dumpstack_32.c
@@ -87,7 +87,7 @@ void show_registers(struct pt_regs *regs
 	int i;
 
 	print_modules();
-	__show_regs(regs, 0);
+	__show_regs(regs, !user_mode_vm(regs));
 
 	printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)\n",
 		TASK_COMM_LEN, current->comm, task_pid_nr(current),



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