Author: dim
Date: Tue Feb 25 07:28:51 2014
New Revision: 262471
URL: http://svnweb.freebsd.org/changeset/base/262471
Log:
In sys/sparc64/sparc64/spitfire.c, prevent signed shift overflow by
casting to the appropriate type. (Note this fix cannot be done in
sys/sparc64/sparc64/spitfire.c, since that file is also included by
assembly source files.)
Reviewed by: marius
MFC after: 3 days
Modified:
head/sys/sparc64/sparc64/spitfire.c
Modified: head/sys/sparc64/sparc64/spitfire.c
==============================================================================
--- head/sys/sparc64/sparc64/spitfire.c Tue Feb 25 06:29:56 2014
(r262470)
+++ head/sys/sparc64/sparc64/spitfire.c Tue Feb 25 07:28:51 2014
(r262471)
@@ -130,7 +130,7 @@ spitfire_icache_page_inval(vm_paddr_t pa
: "=r" (tag) : "r" (addr), "n" (ASI_ICACHE_TAG));
if (((tag >> IC_VALID_SHIFT) & IC_VALID_MASK) == 0)
continue;
- tag &= IC_TAG_MASK << IC_TAG_SHIFT;
+ tag &= (u_long)IC_TAG_MASK << IC_TAG_SHIFT;
if (tag == target) {
PMAP_STATS_INC(spitfire_icache_npage_inval_match);
stxa_sync(addr, ASI_ICACHE_TAG, tag);
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