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This documents EL3 requirements for FEAT_PMUv3. The register field MDCR_EL3 .TPM needs to be cleared for accesses into PMU registers without any trap being generated into EL3. PMUv3 registers like PMCCFILTR_EL0, PMCCNTR_EL0 PMCNTENCLR_EL0, PMCNTENSET_EL0, PMCR_EL0, PMEVCNTR<n>_EL0, PMEVTYPER<n>_EL0 etc are already being accessed for perf HW PMU implementation. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Link: https://lore.kernel.org/r/20241211065425.1106683-3-anshuman.khandual@arm.com Signed-off-by: Will Deacon <will@kernel.org> |
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| .. | ||
| acpi_object_usage.rst | ||
| amu.rst | ||
| arm-acpi.rst | ||
| arm-cca.rst | ||
| asymmetric-32bit.rst | ||
| booting.rst | ||
| cpu-feature-registers.rst | ||
| cpu-hotplug.rst | ||
| elf_hwcaps.rst | ||
| features.rst | ||
| gcs.rst | ||
| hugetlbpage.rst | ||
| index.rst | ||
| kasan-offsets.sh | ||
| kdump.rst | ||
| legacy_instructions.rst | ||
| memory-tagging-extension.rst | ||
| memory.rst | ||
| mops.rst | ||
| perf.rst | ||
| pointer-authentication.rst | ||
| ptdump.rst | ||
| silicon-errata.rst | ||
| sme.rst | ||
| sve.rst | ||
| tagged-address-abi.rst | ||
| tagged-pointers.rst | ||