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From: John Baldwin <jhb@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Subject: PERFORCE change 72667 for review
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http://perforce.freebsd.org/chv.cgi?CH=72667

Change 72667 by jhb@jhb_slimer on 2005/03/07 22:21:08

	Update.

Affected files ...

.. //depot/projects/smpng/sys/notes#30 edit

Differences ...

==== //depot/projects/smpng/sys/notes#30 (text+ko) ====

@@ -19,6 +19,33 @@
   more realistic since they call functions.  However, these clobber updates
   need to be verified against the actual pc98 code.
   - Untested
+  - Oops, '+' is invalid for memory operands it turns out, so revisit the
+    whole tree to really fix this.  Also, fixup atomic ops so that they
+    treat the memory pointed to as an output and don't all clobber "memory",
+    instead, just acquire variants clobber "memory".
+    + alpha
+    + amd64
+      - why clobber memory in disable_intr()?
+      - eventually we should not clobber all memory for bus_space, but just
+        the memory we actually touch
+    + arm
+      - needs real acq variants to get "memory" clobber
+    + boot
+    + contrib
+    + dev
+      - drm clobbers memory for write barriers
+      - drm and sym should use bus_space for barriers
+    - gnu
+      - contrib code
+    + ia64
+    + i386
+      - why clobber memory in disable_intr()?
+    + pc98
+    + pci
+    + powerpc
+      - not sure powerpc_mb() should clobber memory
+    + sparc64
+    - sys
 - Fixup td_ucred of thread doing execve() to re-sync with process ucred
   after single threading during an exec.
   - Untested