From: John David Anglin <dave.anglin@bell.net>
Date: Sat, 4 May 2013 19:16:41 +0000 (+0000)
Subject: parisc: use long branch in fork_like macro
X-Git-Tag: v3.9.3~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=746cb3d3ce315b53263a1f8a97390be84cfd5ee3;p=thirdparty%2Fkernel%2Fstable.git

parisc: use long branch in fork_like macro

commit bbbfde782084b4f0d85ddffb88f1cf4650ff40e4 upstream.

The "b" branch instruction used in the fork_like macro only can handle
17-bit pc-relative offsets.
This fails with an out of range offset with some .config files.
Rewrite to use the "be" instruction which
can branch to any address in a space.

Signed-off-by: John David Anglin  <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index ac07f9634c57d..897bce412c58b 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -1709,7 +1709,8 @@ ENTRY(sys_\name\()_wrapper)
 	ldo	TASK_REGS(%r1),%r1
 	reg_save %r1
 	mfctl	%cr27, %r28
-	b	sys_\name
+	ldil	L%sys_\name, %r31
+	be	R%sys_\name(%sr4,%r31)
 	STREG	%r28, PT_CR27(%r1)
 ENDPROC(sys_\name\()_wrapper)
 	.endm