Messages in this thread | | | Date | Wed, 30 Sep 2009 18:17:21 -0700 | From | Chris Wright <> | Subject | Re: [PATCH ACS v3 1/1] |
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* Kay, Allen M (allen.m.kay@intel.com) wrote: > On the other hand, can we say VT-d PT mode is mainly for KVM > virtualization use case? If so, is it reasonable to say performance of > host P2P in this mode is not of highest priority?
Guess it depends on the workload. Would be helpful to identify a use case that is p2p heavy (and then the impact of enabling ACS).
> If not, another option is to have a kernel boot parameter to > configure an kernel boot instance to be either host kernel optimized or > virtualization optimized. I don't know whether this is a reasonable or > not ...
I was thinking that ACS could be enabled if an IOMMU is enabled. Not a perfect fit, but seems reasonably close.
thanks, -chris
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