[src/trunk]: src/share/man/man4 document some bugs

[jdolecek <jdolecek%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ba820f3a0330
branches:  trunk
changeset: 817925:ba820f3a0330
user:      jdolecek <jdolecek%NetBSD.org@localhost>
date:      Fri Sep 16 12:31:27 2016 +0000

description:
document some bugs

diffstat:

 share/man/man4/nvme.4 |  24 ++++++++++++++++++++++--
 1 files changed, 22 insertions(+), 2 deletions(-)

diffs (42 lines):

diff -r 65f654a1935d -r ba820f3a0330 share/man/man4/nvme.4
--- a/share/man/man4/nvme.4     Fri Sep 16 12:28:41 2016 +0000
+++ b/share/man/man4/nvme.4     Fri Sep 16 12:31:27 2016 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: nvme.4,v 1.2 2016/05/02 09:43:33 wiz Exp $
+.\"    $NetBSD: nvme.4,v 1.3 2016/09/16 12:31:27 jdolecek Exp $
 .\"    $OpenBSD: nvme.4,v 1.2 2016/04/14 11:53:37 jmc Exp $
 .\"
 .\" Copyright (c) 2016 David Gwynne <dlg%openbsd.org@localhost>
@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd May 1, 2016
+.Dd September 16, 2016
 .Dt NVME 4
 .Os
 .Sh NAME
@@ -54,3 +54,23 @@
 by
 .An NONAKA Kimihiro
 .Aq Mt nonaka%NetBSD.org@localhost .
+.Sh BUGS
+Emulated
+.Nm
+device under QEMU doesn't currently work - controller identify command times
+out.
+.Pp
+Emulated
+.Nm
+device under
+.Tn Oracle
+.Tn VirtualBox
+attaches and works fine, but sometimes after reboot device no longer works.
+When this happens, controller fails to properly disable/enable during probe,
+so the
+.Xr ld 4
+is not attached. Virtual machine must be completely powered off and started
+again to get the device working again.
+.Pp
+.Nm
+kernel module is currently only loadable for kernels configured with 'no ld'.