PR/41058 CVS commit: src/sys/arch/arm/arm32

[Steve Woodford <scw%netbsd.org@localhost>]

The following reply was made to PR kern/41058; it has been noted by GNATS.

From: Steve Woodford <scw%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/41058 CVS commit: src/sys/arch/arm/arm32
Date: Sat, 28 Nov 2009 11:44:45 +0000

 Module Name:   src
 Committed By:  scw
 Date:          Sat Nov 28 11:44:45 UTC 2009
 
 Modified Files:
        src/sys/arch/arm/arm32: pmap.c
 
 Log Message:
 Apply some band-aid to pmap_activate() for PR kern/41058:
 
 There's a corner case here which can leave turds in the cache as
 reported in kern/41058. They're probably left over during tear-down and
 switching away from an exiting process. Until the root cause is identified
 and fixed, zap the cache when switching pmaps. This will result in a few
 unnecessary cache flushes, but that's better than silently corrupting data.
 
 Also remove an extraneous return statement in pmap_page_protect() which
 crept in during the matt-armv6 merge.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.202 -r1.203 src/sys/arch/arm/arm32/pmap.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.