wireguard-linux/drivers/resctrl/Makefile, branch stable

arm64: mpam: Select ARCH_HAS_CPU_RESCTRL

2026-03-27T15:32:11Z

Enough MPAM support is present to enable ARCH_HAS_CPU_RESCTRL. Let it rip^Wlink! ARCH_HAS_CPU_RESCTRL indicates resctrl can be enabled. It is enabled by the arch code simply because it has 'arch' in its name. This removes ARM_CPU_RESCTRL as a mimic of X86_CPU_RESCTRL. While here, move the ACPI dependency to the driver's Kconfig file. Tested-by: Gavin Shan Tested-by: Shaopeng Tan Tested-by: Peter Newman Tested-by: Zeng Heng Tested-by: Punit Agrawal Tested-by: Jesse Chick Reviewed-by: Zeng Heng Reviewed-by: Shaopeng Tan Reviewed-by: Jonathan Cameron Reviewed-by: Gavin Shan Acked-by: Catalin Marinas Co-developed-by: Ben Horgan Signed-off-by: Ben Horgan Signed-off-by: James Morse

arm_mpam: resctrl: Add boilerplate cpuhp and domain allocation

2026-03-27T15:29:27Z

resctrl has its own data structures to describe its resources. We can't use these directly as we play tricks with the 'MBA' resource, picking the MPAM controls or monitors that best apply. We may export the same component as both L3 and MBA. Add mpam_resctrl_res[] as the array of class->resctrl mappings we are exporting, and add the cpuhp hooks that allocated and free the resctrl domain structures. Only the mpam control feature are considered here and monitor support will be added later. While we're here, plumb in a few other obvious things. CONFIG_ARM_CPU_RESCTRL is used to allow this code to be built even though it can't yet be linked against resctrl. Tested-by: Gavin Shan Tested-by: Shaopeng Tan Tested-by: Peter Newman Tested-by: Zeng Heng Tested-by: Punit Agrawal Tested-by: Jesse Chick Reviewed-by: Zeng Heng Reviewed-by: Shaopeng Tan Reviewed-by: Jonathan Cameron Reviewed-by: Gavin Shan Co-developed-by: Ben Horgan Signed-off-by: Ben Horgan Signed-off-by: James Morse

arm_mpam: Add probe/remove for mpam msc driver and kbuild boiler plate

2025-11-19T18:34:20Z

Probing MPAM is convoluted. MSCs that are integrated with a CPU may only be accessible from those CPUs, and they may not be online. Touching the hardware early is pointless as MPAM can't be used until the system-wide common values for num_partid and num_pmg have been discovered. Start with driver probe/remove and mapping the MSC. Cc: Carl Worth Reviewed-by: Jonathan Cameron Reviewed-by: Fenghua Yu Reviewed-by: Shaopeng Tan Tested-by: Fenghua Yu Tested-by: Shaopeng Tan Tested-by: Peter Newman Tested-by: Carl Worth Tested-by: Gavin Shan Tested-by: Zeng Heng Tested-by: Hanjun Guo Signed-off-by: James Morse Signed-off-by: Ben Horgan Signed-off-by: Catalin Marinas