| To: | "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-devel] how can native driver response quickly for low FIFO device |
| From: | "Dong, Eddie" <eddie.dong@xxxxxxxxx> |
| Date: | 2006年5月25日 21:53:20 +0800 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | 2006年5月25日 06:56:31 -0700 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxx |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcZ//N6AnrpuiwtESj+rWaqRiX6WXgABWeGg |
| Thread-topic: | [Xen-devel] how can native driver response quickly for low FIFO device |
> > There's a 128-byte receive buffer. Bytes are greedily taken from the > UART FIFO in interrupt context and written to the software receive > buffer. If overflow were a problem we could obviously quite easily > make that receive buffer substantially larger. But this need the participate of processor in dom0. If the physical processor is running for domU, and domU is waiting for its time slice (descheduled), how can the bytes be taken to software receive buffer? Eddie _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | [Xen-devel] Re: crash with Xen dom0 image from kdump , Dave Anderson |
|---|---|
| Next by Date: | RE: [Xen-devel][PATCH] Multiple HVM time device model support in HV , Dong, Eddie |
| Previous by Thread: | Re: [Xen-devel] how can native driver response quickly for low FIFO device , Keir Fraser |
| Next by Thread: | Re: [Xen-devel] how can native driver response quickly for low FIFO device , Keir Fraser |
| Indexes: | [Date] [Thread] [Top] [All Lists] |