From: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx> Sent: Tuesday, March 24, 2020 12:57 AM > > When a guest VM panics, Hyper-V should be notified only once via the > crash synthetic MSRs. Current Linux code might write these crash MSRs > twice during a system panic: > 1) hyperv_panic/die_event() calling hyperv_report_panic() > 2) hv_kmsg_dump() calling hyperv_report_panic_msg() > > Fix this by not calling hyperv_report_panic() if a kmsg dump has been > successfully registered. The notification will happen later via > hyperv_report_panic_msg(). > > Signed-off-by: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx> > --- > Change since v1: > - Update commit log > > Change since v2: > - Update comment > --- > drivers/hv/vmbus_drv.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>
