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Re: [Xen-devel] [rfc 00/18] ioemu: use devfn instead of slots as the uni
| To: | Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>, Simon Horman <horms@xxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [rfc 00/18] ioemu: use devfn instead of slots as the unit for passthrough |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 19 Feb 2009 09:38:24 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> |
| Delivery-date: | Thu, 19 Feb 2009 01:39:29 -0800 |
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| Thread-index: | AcmSc4RaTM+Gu3TjTWCxw9aGdja/PwAAkq+j |
| Thread-topic: | [Xen-devel] [rfc 00/18] ioemu: use devfn instead of slots as the unit for passthrough |
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On 19/02/2009 09:21, "Yuji Shimada" <shimada-yxb@xxxxxxxxxxxxxxx> wrote: >> To be honest I am a little confused about what the above maping >> is supposed to achive. > > Please find the attached figure which shows the interrupt routing in > xen hypervisor. The point being to deliberately permute the mapping to try to avoid accidental GSI sharing even if there are patterns in DEV:INTX usage (e.g., all devs use INTA). -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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