From: Andres Lagar-Cavilla <andres@lagarcavilla.org>
To: xen-devel@lists.xen.org
Cc: keir@xen.org, andres@gridcentric.ca, tim@xen.org, JBeulich@suse.com
Subject: [PATCH] Extra check in grant table code for mapping of shared frame
Date: Thu, 13 Sep 2012 11:27:48 -0400 [thread overview]
Message-ID: <40b91bed1275b13e191f.1347550068@xdev.gridcentric.ca> (raw)
xen/common/grant_table.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
diff -r 5ce5b53ea68f -r 40b91bed1275 xen/common/grant_table.c
--- a/xen/common/grant_table.c
+++ b/xen/common/grant_table.c
@@ -649,9 +649,12 @@ __gnttab_map_grant_ref(
}
else if ( owner == rd || owner == dom_cow )
{
- if ( gnttab_host_mapping_get_page_type(op, ld, rd) &&
- !get_page_type(pg, PGT_writable_page) )
- goto could_not_pin;
+ if ( gnttab_host_mapping_get_page_type(op, ld, rd) )
+ {
+ if ( (owner == dom_cow) ||
+ !get_page_type(pg, PGT_writable_page) )
+ goto could_not_pin;
+ }
nr_gets++;
if ( op->flags & GNTMAP_host_map )
next reply other threads:[~2012-09-13 15:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 15:27 Andres Lagar-Cavilla [this message]
2012-09-17 11:00 ` [PATCH] Extra check in grant table code for mapping of shared frame Andres Lagar-Cavilla
2012-09-17 11:17 ` Keir Fraser
2012-09-17 16:29 ` Tim Deegan
2012-09-19 15:35 ` Jan Beulich
2012-09-20 15:30 ` Andres Lagar-Cavilla
2012-09-20 15:50 ` Jan Beulich
-- strict thread matches above, loose matches on Subject: below --
2012-09-04 15:11 Andres Lagar-Cavilla
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