The x86/urgent patch batch merged into Linux 7.0-rc3 includes several notable CPU fixes. On the AMD side, IBPB-on-Entry support is added for SEV-SNP guest VMs on EPYC Zen 5 processors, improving protection against speculative execution attacks, plus a fix for SEV guest boot failures. On the Intel side, Sub-NUMA Clustering (SNC) topology enumeration bugs are addressed, particularly issues exposed by Granite Rapids X and Clearwater Forest X processors.
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