From: Jan Kiszka <[email protected]> ivshm_net_run is executed in task context, thus also with bottom-halves enabled. Calling napi_schedule in that state can cause problems under NOHZ, see also
https://patches.linaro.org/project/linux-usb/patch/[email protected]/ Therefore, disable bh around this call. Other invocations of napi_schedule are not affected: ivshm_net_poll - poll routine, always called with bh disabled ivshm_net_int_tx_rx - interrupt handler, bh implicitly off ivshm_net_poll_controller - always called with IRQs off, thus also bh Reported-by: Peng Fan <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> --- drivers/net/ivshmem-net.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ivshmem-net.c b/drivers/net/ivshmem-net.c index 9406b4dcc6c0..a80eea5aecaf 100644 --- a/drivers/net/ivshmem-net.c +++ b/drivers/net/ivshmem-net.c @@ -558,7 +558,9 @@ static void ivshm_net_run(struct net_device *ndev) netif_start_queue(ndev); napi_enable(&in->napi); + local_bh_disable(); napi_schedule(&in->napi); + local_bh_enable(); ivshm_net_set_state(in, IVSHM_NET_STATE_RUN); } -- 2.35.3 -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jailhouse-dev/bb0226f4-5c26-0fc5-fdfe-e6d936e34102%40web.de.
