Thankyou very much for sharing this! It worked perfectly 🙂   I just upgraded my R710 server from 6.9.2 to 6.10.0-rc5 and ran into this exact same issue. Server wouldn't boot due to a checksum error.     Added the 2 arguments: intel_iommu=on iommu=pt   on the boot option by pressing tab to edit the options and the Server is up again!        
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