performance impact of disabling Interrupt Remapping (IR) in VT-d - Intel Community

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performance impact of disabling Interrupt Remapping (IR) in VT-d

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Hi,

If we keep DMA Remapping and disable Interrupt remapping functionality what is the performance impact to a VM or VMM. Is there any performance data/graphs available.

Thanks

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Here is a blog that talks about VT-d that may help you:
Understanding VT-d: Intel Virtualization Technology for Directed I/O

Hope this helps,
-Thai

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