The branch main has been updated by rew:
URL:
https://cgit.FreeBSD.org/src/commit/?id=0b29683b32df0233a85f597836e61cc6432a3e4f
commit 0b29683b32df0233a85f597836e61cc6432a3e4f
Author: Robert Wing <r...@freebsd.org>
AuthorDate: 2021-12-12 21:39:40 +0000
Commit: Robert Wing <r...@freebsd.org>
CommitDate: 2021-12-12 21:39:40 +0000
bhyve: set EV_CLEAR for EVFILT_VNODE mevents
When an EVFILT_VNODE filter event is triggered, reset it.
This fixes the issue where a virtio-blk resize event would cause the
mevent thread to consume 100% of the cpu.
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D33326
---
usr.sbin/bhyve/mevent.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/usr.sbin/bhyve/mevent.c b/usr.sbin/bhyve/mevent.c
index eb84dc15ad47..5170251e008b 100644
--- a/usr.sbin/bhyve/mevent.c
+++ b/usr.sbin/bhyve/mevent.c
@@ -175,7 +175,14 @@ mevent_kq_filter(struct mevent *mevp)
static int
mevent_kq_flags(struct mevent *mevp)
{
- return (mevp->me_state);
+ int retval;
+
+ retval = mevp->me_state;
+
+ if (mevp->me_type == EVF_VNODE)
+ retval |= EV_CLEAR;
+
+ return (retval);
}
static int
