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RE: [Xen-devel] [PATCH] Simplify IO event handling since it's now onlyus
| To: | "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-devel] [PATCH] Simplify IO event handling since it's now onlyused for IO done notification. |
| From: | "Li, Xin B" <xin.b.li@xxxxxxxxx> |
| Date: | Fri, 10 Nov 2006 11:15:29 +0800 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Thu, 09 Nov 2006 19:15:47 -0800 |
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| Thread-index: | AccEGeyAxUYCtUelSqeyOM8p7TlblwAWJ3RQ |
| Thread-topic: | [Xen-devel] [PATCH] Simplify IO event handling since it's now onlyused for IO done notification. |
>Subject: [Xen-devel] [PATCH] Simplify IO event handling since >it's now onlyused for IO done notification. > >Simplify IO event handling since it's now only used for IO done >notification. Keir, For the old code, we need it because interrupt notification from qemu may wake up a vcpu that is waiting for an IO done notification from Qemu, however, now interrupt notification logic is seperated and using hypercall, so only after Qemu changes IO slot state to STATE_IORESP_READY, it will wake up the target vcpu. Why we still need wait_on_xen_event_channel now? BTW, prepare_wait_on_xen_event_channel and wait_on_xen_event_channel don't need port parameter. -Xin _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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