[RFC PATCH v2 3/3] block: Always use a bounce buffer when XPFO is enabled

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


This is a temporary hack to prevent the use of bio_map_user_iov()
which causes XPFO page faults.

Signed-off-by: Juerg Haefliger <juerg.haefliger@xxxxxxx>
 block/blk-map.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/blk-map.c b/block/blk-map.c
index b8657fa8dc9a..e889dbfee6fb 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -52,7 +52,7 @@ static int __blk_rq_map_user_iov(struct request *rq,
 	struct bio *bio, *orig_bio;
 	int ret;
-	if (copy)
+	if (copy || IS_ENABLED(CONFIG_XPFO))
 		bio = bio_copy_user_iov(q, map_data, iter, gfp_mask);
 		bio = bio_map_user_iov(q, iter, gfp_mask);

To unsubscribe from this list: send the line "unsubscribe linux-x86_64" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux ia64]     [Linux Kernel]     [DCCP]     [Linux ARM]     [Yosemite News]     [Linux SCSI]     [Linux Hams]
  Powered by Linux