Re: [RFC PATCH v2 2/4] perf: arm_pmuv3: Introduce module param to partition the PMU

Hi Oliver, thanks for the review. Oliver Upton writes: Hi Colton, On Sat, Feb 08, 2025 at 02:01:09AM +, Colton Lewis wrote: For PMUv3, the register MDCR_EL2.HPMN partitiones the PMU counters into two ranges where counters 0..HPMN-1 are accessible by EL1 and, if allowed, EL0 while count

Re: [RFC PATCH v2 2/4] perf: arm_pmuv3: Introduce module param to partition the PMU

Hi Colton, On Sat, Feb 08, 2025 at 02:01:09AM +, Colton Lewis wrote: > For PMUv3, the register MDCR_EL2.HPMN partitiones the PMU counters > into two ranges where counters 0..HPMN-1 are accessible by EL1 and, if > allowed, EL0 while counters HPMN..N are only accessible by EL2. > > Introduce a

[RFC PATCH v2 2/4] perf: arm_pmuv3: Introduce module param to partition the PMU

For PMUv3, the register MDCR_EL2.HPMN partitiones the PMU counters into two ranges where counters 0..HPMN-1 are accessible by EL1 and, if allowed, EL0 while counters HPMN..N are only accessible by EL2. Introduce a module parameter in the PMUv3 driver to set this register. The name reserved_host_co