On Tuesday Intel released microcode-20261110, with updated CPU microcode for 13th Gen “Raptor Lake” and newer Core chips and for Sapphire Rapids and newer Xeons, Phoronix reports. It’s also the first microcode update for Clearwater Forest.
- Client: Raptor Lake, Wildcat Lake and Panther Lake. The Panther Lake fixes are mostly about performance-monitoring events that were overcounted or undercounted.
- Server: Sapphire Rapids, Emerald Rapids, Granite Rapids, Sierra Forest and Clearwater Forest. Granite Rapids gets a DICE certificate fix and a fix for wrong core counts reported through PIROM to BMC tools.
- According to Phoronix, everything here is a functional fix, with no new security issues.
My take
This one isn’t urgent unless you rely on perf counters or your BMC shows the wrong core count. Let it come in through your normal distro updates. In the how-to in this batch, I show how to check which microcode revision you’re actually running.
God Bless, and May the Source Be with You!
