On 29/07/17 18:59, Liu Shuo wrote: > Here is a device has xen-pirq-MSI interrupt. Dom0 might lost interrupt > during driver irq_disable/irq_enable. Here is the scenario, > 1. irq_disable -> disable_dynirq -> mask_evtchn(irq channel) > 2. dev interrupt raised by HW and Xen mark its evtchn as pending > 3. irq_enable -> startup_pirq -> eoi_pirq -> > clear_evtchn(channel of irq) -> clear pending status > 4. consume_one_event process the irq event without pending bit assert > which result in interrupt lost once > 5. No HW interrupt raising anymore. > > Now use enable_dynirq for enable_pirq of xen_pirq_chip to remove > eoi_pirq when irq_enable. > > Signed-off-by: Liu Shuo <shuo.a....@intel.com>
Pushed to xen/tip.git for-linus-4.13b Thanks, Juergen _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
