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Apply patch, requested by riastradh in ticket #1863, pulling up 

the essential part of

	sys/arch/xen/xen/if_xennet_xenbus.c		1.129

xennet(4): Add missing membar.
This commit is contained in:
martin 2023-07-31 15:31:43 +00:00
parent 78eb79bdaf
commit 34847d7b24
1 changed files with 3 additions and 3 deletions
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6
sys/arch/xen/xen/if_xennet_xenbus.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_xennet_xenbus.c,v 1.70.6.2 2019/01/21 20:12:15 martin Exp $ */
/* $NetBSD: if_xennet_xenbus.c,v 1.70.6.3 2023/07/31 15:31:43 martin Exp $ */
/*
* Copyright (c) 2006 Manuel Bouyer.
@ -85,7 +85,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_xennet_xenbus.c,v 1.70.6.2 2019/01/21 20:12:15 martin Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_xennet_xenbus.c,v 1.70.6.3 2023/07/31 15:31:43 martin Exp $");
#include "opt_xen.h"
#include "opt_nfs_boot.h"
@ -947,7 +947,7 @@ again:
sc->sc_tx_ring.sring->rsp_event =
resp_prod + ((sc->sc_tx_ring.sring->req_prod - resp_prod) >> 1) + 1;
ifp->if_timer = 0;
xen_wmb();
xen_mb();
if (resp_prod != sc->sc_tx_ring.sring->rsp_prod)
goto again;
end: