From: Jan Beulich <jbeulich@novell.com>
Date: Thu, 12 Mar 2009 10:38:55 +0000 (+0000)
Subject: x86-64: move save_paranoid into .kprobes.text
X-Git-Tag: firefly_0821_release~14004^2~28^3~2^3~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c2810188c1b810c68139608a207befae0a4f1e69;p=firefly-linux-kernel-4.4.55.git

x86-64: move save_paranoid into .kprobes.text

Impact: mark save_paranoid as non-kprobe-able code

This appears to be necessary as the function gets called from
kprobes-unsafe exception handling stubs (i.e. which themselves
live in .kprobes.text).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <49B8F44F.76E4.0078.0@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 54866bb5d38c..a331ec38af9e 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -368,6 +368,7 @@ ENTRY(save_rest)
 END(save_rest)
 
 /* save complete stack frame */
+	.pushsection .kprobes.text, "ax"
 ENTRY(save_paranoid)
 	XCPT_FRAME 1 RDI+8
 	cld
@@ -396,6 +397,7 @@ ENTRY(save_paranoid)
 1:	ret
 	CFI_ENDPROC
 END(save_paranoid)
+	.popsection
 
 /*
  * A newly forked process directly context switches into this address.