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Intel TDX Is Becoming Potentially Faster, Avoiding "Slow & Buggy" Code Path On Linux
Intel Trust Domain Extensions (TDX) for providing hardware-backed isolation and confidential computing support for virtual machines (VMs) on modern Xeon processors is about to become more reliable and potentially faster for some workloads.
Intel Trust Domain Extensions (TDX) for providing hardware-backed isolation and confidential computing support for virtual machines (VMs) on modern Xeon processors is about to become more reliable and potentially faster for some workloads. This avoids a "slow and buggy" code path and in doing so also is reported to provide a "major performance improvement" for some workloads like the Java SPECjbb2015 benchmark. Sadly there was just the reference to a "major performance improvement" with SPECjbb and no numbers to quantify that gain nor was there any commentary in the patches for any other workloads that may have been evaluated.This Intel TDX improvement to avoid protected guest VMs from using the HLT instruction in halt routines is now pending for pulling in Linux 6.15 Git this week and will presumably then appear in the next round of Linux stable point releases shortly thereafter.
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