On Mon, Nov 07, 2022 at 09:34:31PM +0100, Eric Auger wrote: > When the vhost iotlb is used along with a guest virtual iommu > and the guest gets rebooted, some MISS messages may have been > recorded just before the reboot and spuriously executed by > the virtual iommu after the reboot. Despite the device iotlb gets > re-initialized, the messages are not cleared. Fix that by calling > vhost_clear_msg() at the end of vhost_init_device_iotlb(). > > Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx> > --- > drivers/vhost/vhost.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > index 40097826cff0..422a1fdee0ca 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -1751,6 +1751,7 @@ int vhost_init_device_iotlb(struct vhost_dev *d, bool enabled) > } > > vhost_iotlb_free(oiotlb); > + vhost_clear_msg(d); > > return 0; > } Hmm. Can't messages meanwhile get processes and affect the new iotlb? > -- > 2.37.3
