diff options
| author |   jmatthew <jmatthew@openbsd.org> | 2019-06-14 03:40:55 +0000 |
|---|---|---|
| committer | jmatthew <jmatthew@openbsd.org> | 2019-06-14 03:40:55 +0000 |
| commit | 901b46a2f18f285da4a536422c2e5c04058f3a45 (patch) | |
| tree | e861595666a5cfb7640caae8956847d778f3ab8d /sys/dev | |
| parent | for public key authentication, check AuthorizedKeysFiles files before (diff) | |
| download | wireguard-openbsd-901b46a2f18f285da4a536422c2e5c04058f3a45.tar.xz wireguard-openbsd-901b46a2f18f285da4a536422c2e5c04058f3a45.zip | |
Add a barrier after arming a completion queue. If multiple cqs are using
the same uar page, these writes could be combined, which would result in
a queue not being armed.
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pci/if_mcx.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/dev/pci/if_mcx.c b/sys/dev/pci/if_mcx.c index 4cbe246672b..0d46eb4fb64 100644 --- a/sys/dev/pci/if_mcx.c +++ b/sys/dev/pci/if_mcx.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_mcx.c,v 1.28 2019/06/13 00:37:04 dlg Exp $ */ +/* $OpenBSD: if_mcx.c,v 1.29 2019/06/14 03:40:55 jmatthew Exp $ */ /* * Copyright (c) 2017 David Gwynne <dlg@openbsd.org> @@ -5716,7 +5716,8 @@ mcx_arm_cq(struct mcx_softc *sc, struct mcx_cq *cq) uval |= cq->cq_n; bus_space_write_raw_8(sc->sc_memt, sc->sc_memh, offset + MCX_UAR_CQ_DOORBELL, htobe64(uval)); - /* barrier? */ + mcx_bar(sc, offset + MCX_UAR_CQ_DOORBELL, sizeof(uint64_t), + BUS_SPACE_BARRIER_WRITE); } void |