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Linux 6.13-rc2 To Workaround Buggy Intel Lunar Lake Leading To Responsiveness Issues
Sent out this morning were the 'x86/urgent' updates ahead of Linux 6.13-rc2 due out later today
Most notable though is fixing some buggy Intel Core Ultra " Lunar Lake" behavior that could lead to responsiveness/delay issues due to the MONITOR implementation being buggy/broken.- Have the Automatic IBRS setting check on AMD does not falsely fire in the guest when it has been set already on the host - Make sure cacheinfo structures memory is allocated to address a boot NULL ptr dereference on Intel Meteor Lake which has different numbers of subleafs in its CPUID(4) leaf Of those changes, most noticeable from my side is the Intel Lunar Lake fix where MONITOR wake-ups can get lost and user-visible delays happen as a result. It's not clear why it took one month for the patch to be fixed up given that it's causing real nuisance issues for new Lunar Lake laptops, but in any event it was sent out today and is marked for back-porting to the current Linux kernel stable series.
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