Author: mav
Date: Thu Aug 18 11:03:21 2016
New Revision: 304409
URL: https://svnweb.freebsd.org/changeset/base/304409
Log:
MFC r303554: Block MSIX negotiation until SMP started and IRQ reshuffled.
Modified:
stable/10/sys/dev/ntb/ntb_hw/ntb_hw.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/dev/ntb/ntb_hw/ntb_hw.c
==============================================================================
--- stable/10/sys/dev/ntb/ntb_hw/ntb_hw.c Thu Aug 18 11:02:42 2016
(r304408)
+++ stable/10/sys/dev/ntb/ntb_hw/ntb_hw.c Thu Aug 18 11:03:21 2016
(r304409)
@@ -2625,6 +2625,17 @@ intel_ntb_user_mw_to_idx(struct ntb_soft
return (uidx);
}
+static int msix_ready;
+
+static void
+intel_ntb_msix_ready(void *arg __unused)
+{
+
+ msix_ready = 1;
+}
+SYSINIT(intel_ntb_msix_ready, SI_SUB_SMP, SI_ORDER_ANY,
+ intel_ntb_msix_ready, NULL);
+
static void
intel_ntb_exchange_msix(void *ctx)
{
@@ -2639,6 +2650,10 @@ intel_ntb_exchange_msix(void *ctx)
if (ntb->peer_msix_done)
goto msix_done;
+ /* Block MSIX negotiation until SMP started and IRQ reshuffled. */
+ if (!msix_ready)
+ goto reschedule;
+
intel_ntb_get_msix_info(ntb);
for (i = 0; i < XEON_NONLINK_DB_MSIX_BITS; i++) {
intel_ntb_peer_spad_write(ntb->device, NTB_MSIX_DATA0 + i,
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