Kannettaviin suunnattu Arrow Lake-H eroaa merkittävästi työpöytäversiosta

[Kaotik]

Intelin Linux-päivitykset ovat paljastaneet Arrow Lake-H:n poikkeavan merkittävästi muista Arrow Lake -malleista ja on omalla tavalla läheistä sukua Meteor Laken kanssa.
Linux-päivityksistä on paljastunut prosessorin tulevan käyttämään Arrow Lake-S:stä tuttujen Lion Cove -P- ja Skymont-E-ydinten rinnalla Meteor Laken SoC-sirulta löytyneitä Crestmont LP-E -ytimiä.

"ArrowLake-H is a specific variant of regular ArrowLake. It shares same PMU features on lioncove P-cores and skymont E-cores with regular ArrowLake except ArrowLake-H adds extra crestmont uarch E-cores.

Thus ArrowLake-H contains two different atom uarchs. This is totally different with previous Intel hybrid platforms which contains only one kind of atom uarchs. In this case, it's not enough to distinguish the uarchs just by core type. So CPUID.1AH.EAX[23:0] provides an unique native model ID for each uarch, this unique native model ID combining the core type can be used to uniquely identity the uarch.

This patch series introduces PMU support for ArrowLake-H. Besides inheriting the same PMU support from regular ArrowLake, it leverages the native model ID to detect the 2nd kind of atom uarch core and enables PMU support. To distinguish the two atom uarchs in sysfs, the PMU of 2nd atom uarch is named to "cpu_atom2"."

Lähde: Linux Prepares For Intel Arrow Lake H With Mix Of Lion Cove, Skymont & Crestmont Cores - Phoronix