Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 26 Apr 2012 13:56:38 +0000 (UTC)
From:      Nathan Whitehorn <nwhitehorn@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org
Subject:   svn commit: r234704 - stable/9/sys/powerpc/aim
Message-ID:  <201204261356.q3QDuc1b051609@svn.freebsd.org>

next in thread | raw e-mail | index | archive | help
Author: nwhitehorn
Date: Thu Apr 26 13:56:38 2012
New Revision: 234704
URL: http://svn.freebsd.org/changeset/base/234704

Log:
  MFC r234517:
  Make sure all pending operations have completed on the existing thread
  before (potentially) migrating it to a different CPU.

Modified:
  stable/9/sys/powerpc/aim/swtch32.S
  stable/9/sys/powerpc/aim/swtch64.S
Directory Properties:
  stable/9/sys/   (props changed)

Modified: stable/9/sys/powerpc/aim/swtch32.S
==============================================================================
--- stable/9/sys/powerpc/aim/swtch32.S	Thu Apr 26 13:55:15 2012	(r234703)
+++ stable/9/sys/powerpc/aim/swtch32.S	Thu Apr 26 13:56:38 2012	(r234704)
@@ -113,6 +113,7 @@ ENTRY(cpu_switch)
 	mr	%r3,%r14		/* restore old thread ptr */
 	bl	pmap_deactivate		/* Deactivate the current pmap */
 
+	sync				/* Make sure all of that finished */
 	stw	%r16,TD_LOCK(%r14)	/* ULE:	update old thread's lock */
 
 cpu_switchin:

Modified: stable/9/sys/powerpc/aim/swtch64.S
==============================================================================
--- stable/9/sys/powerpc/aim/swtch64.S	Thu Apr 26 13:55:15 2012	(r234703)
+++ stable/9/sys/powerpc/aim/swtch64.S	Thu Apr 26 13:56:38 2012	(r234704)
@@ -139,6 +139,7 @@ ENTRY(cpu_switch)
 
 	addi	%r1,%r1,48
 
+	sync				/* Make sure all of that finished */
 	std	%r16,TD_LOCK(%r14)	/* ULE:	update old thread's lock */
 
 cpu_switchin:



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201204261356.q3QDuc1b051609>