Author: nwhitehorn
Date: Fri Apr 20 23:01:36 2012
New Revision: 234517
URL: http://svn.freebsd.org/changeset/base/234517
Log:
Make sure all pending operations have completed on the existing thread
before (potentially) migrating it to a different CPU.
MFC after: 5 days
Modified:
head/sys/powerpc/aim/swtch32.S
head/sys/powerpc/aim/swtch64.S
Modified: head/sys/powerpc/aim/swtch32.S
==============================================================================
--- head/sys/powerpc/aim/swtch32.S Fri Apr 20 23:00:37 2012
(r234516)
+++ head/sys/powerpc/aim/swtch32.S Fri Apr 20 23:01:36 2012
(r234517)
@@ -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: head/sys/powerpc/aim/swtch64.S
==============================================================================
--- head/sys/powerpc/aim/swtch64.S Fri Apr 20 23:00:37 2012
(r234516)
+++ head/sys/powerpc/aim/swtch64.S Fri Apr 20 23:01:36 2012
(r234517)
@@ -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:
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