From: Heiko Carstens Date: Mon, 14 May 2012 09:04:10 +0000 (+0200) Subject: s390/memory hotplug: initialize storage keys X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0cd2f6201c536665d8220672dfcaf7be9da348a1;p=linux-beck.git s390/memory hotplug: initialize storage keys Add missing storage key initialization when memory comes online. Didn't hurt until now, since the kernel always uses access key 0. However for debugging purposes we sometimes use a different key and it might be good if everything is properly initialized... Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index 231a1d85127b..36506366158d 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c @@ -352,7 +352,17 @@ out: static int sclp_assign_storage(u16 rn) { - return do_assign_storage(0x000d0001, rn); + unsigned long long start, address; + int rc; + + rc = do_assign_storage(0x000d0001, rn); + if (rc) + goto out; + start = address = rn2addr(rn); + for (; address < start + rzm; address += PAGE_SIZE) + page_set_storage_key(address, PAGE_DEFAULT_KEY, 0); +out: + return rc; } static int sclp_unassign_storage(u16 rn)