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authorJulien Grall <julien.grall@citrix.com>2012-04-13 17:33:02 +0000
committerStefano Stabellini <stefano.stabellini@eu.citrix.com>2012-04-13 17:35:06 +0000
commit852a7cec90f12516eb335bb29ed1398c2f0b7c2c (patch)
treeed7d924bbea5d8d5e8eec78fa039141f56fcc971 /xen-mapcache.c
parent09ab48ee6c7ec082f56f85e234b066ed4fd874e2 (diff)
downloadqemu-arm-852a7cec90f12516eb335bb29ed1398c2f0b7c2c.tar.gz
xen-mapcache: don't unmap locked entry during mapcache invalidation
When an IOREQ_TYPE_INVALIDATE is sent to QEMU, it invalidates all entry of the map cache even if it's locked. QEMU is not able to know that entry was invalidated, so when an IO access is requested a segfault occured. Signed-off-by: Julien Grall <julien.grall@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Diffstat (limited to 'xen-mapcache.c')
-rw-r--r--xen-mapcache.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/xen-mapcache.c b/xen-mapcache.c
index 75ac313f28..59ba085b62 100644
--- a/xen-mapcache.c
+++ b/xen-mapcache.c
@@ -387,6 +387,9 @@ void xen_invalidate_map_cache(void)
if (entry->vaddr_base == NULL) {
continue;
}
+ if (entry->lock > 0) {
+ continue;
+ }
if (munmap(entry->vaddr_base, entry->size) != 0) {
perror("unmap fails");