From: James Bottomley <JBottomley@Parallels.com>
Date: Tue, 15 May 2012 10:04:19 +0000 (+0100)
Subject: [PARISC] fix PA1.1 oops on boot
X-Git-Tag: upstream/snapshot3+hdmi~7491^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5e185581d7c46ddd33cd9c01106d1fc86efb9376;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

[PARISC] fix PA1.1 oops on boot

All PA1.1 systems have been oopsing on boot since

commit f311847c2fcebd81912e2f0caf8a461dec28db41
Author: James Bottomley <James.Bottomley@HansenPartnership.com>
Date:   Wed Dec 22 10:22:11 2010 -0600

    parisc: flush pages through tmpalias space

because a PA2.0 instruction was accidentally introduced into the PA1.1 TLB
insertion interruption path when it was consolidated with the do_alias macro.
Fix the do_alias macro only to use PA2.0 instructions if compiled for 64 bit.
Cc: stable@vger.kernel.org  #2.6.39+
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 6f05944..5350342 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -581,7 +581,11 @@
 	 */
 	cmpiclr,=	0x01,\tmp,%r0
 	ldi		(_PAGE_DIRTY|_PAGE_READ|_PAGE_WRITE),\prot
+#ifdef CONFIG_64BIT
 	depd,z		\prot,8,7,\prot
+#else
+	depw,z		\prot,8,7,\prot
+#endif
 	/*
 	 * OK, it is in the temp alias region, check whether "from" or "to".
 	 * Check "subtle" note in pacache.S re: r23/r26.