[PATCH v3 00/10] perf: arm_spe: Armv8.8 SPE features

James Clark
2025-06-05T10:52:53Z

Support 3 new SPE features: FEAT_SPEv1p4 filters, FEAT_SPE_EFT extended
filtering, and SPE_FEAT_FDS data source filtering. The features are
independent can be applied separately:

* Prerequisite sysreg changes - patches 1 - 2
* FEAT_SPEv1p4 - patch 3
* FEAT_SPE_EFT - patch 4
* FEAT_SPE_FDS - patches 5 - 8
* FEAT_SPE_FDS Perf tool changes - patches 9 - 11

The first two features will work with old Perfs but a Perf change to
parse the new config4 is required for the last feature.

To:

---
Changes in v3:
- Use PMSIDR_EL1_FDS instead of 1 << PMSIDR_EL1_FDS_SHIFT
- Add VNCR offsets
- Link to v2: https://lore.kernel.org/r/20250529-james-perf-feat_spe_eft-v2-0-a01a9baad06a@linaro.org

Changes in v2:
- Fix detection of FEAT_SPE_FDS in el2_setup.h
- Pickup Marc Z's sysreg change instead which matches the json
- Restructure and expand docs changes
- Link to v1: https://lore.kernel.org/r/20250506-james-perf-feat_spe_eft-v1-0-dd480e8e4851@linaro.org

---
James Clark (10):
arm64: sysreg: Add new PMSFCR_EL1 fields and PMSDSFR_EL1 register
perf: arm_spe: Support FEAT_SPEv1p4 filters
perf: arm_spe: Add support for FEAT_SPE_EFT extended filtering
arm64/boot: Enable EL2 requirements for SPE_FEAT_FDS
KVM: arm64: Add trap configs for PMSDSFR_EL1
perf: Add perf_event_attr::config4
perf: arm_spe: Add support for filtering on data source
tools headers UAPI: Sync linux/perf_event.h with the kernel sources
perf tools: Add support for perf_event_attr::config4
perf docs: arm-spe: Document new SPE filtering features

Documentation/arch/arm64/booting.rst | 11 ++++
arch/arm64/include/asm/el2_setup.h | 14 +++++
arch/arm64/include/asm/sysreg.h | 7 +++
arch/arm64/include/asm/vncr_mapping.h | 2 +
arch/arm64/kvm/emulate-nested.c | 1 +
arch/arm64/kvm/sys_regs.c | 1 +
arch/arm64/tools/sysreg | 13 +++-
drivers/perf/arm_spe_pmu.c | 100 +++++++++++++++++++++++++++++-
include/uapi/linux/perf_event.h | 2 +
tools/include/uapi/linux/perf_event.h | 2 +
tools/perf/Documentation/perf-arm-spe.txt | 97 ++++++++++++++++++++++++++---
tools/perf/tests/parse-events.c | 14 ++++-
tools/perf/util/parse-events.c | 11 ++++
tools/perf/util/parse-events.h | 1 +
tools/perf/util/parse-events.l | 1 +
tools/perf/util/pmu.c | 8 +++
tools/perf/util/pmu.h | 1 +
17 files changed, 273 insertions(+), 13 deletions(-)
---
base-commit: ec7714e4947909190ffb3041a03311a975350fe0
change-id: 20250312-james-perf-feat_spe_eft-66cdf4d8fe99

Best regards,
--
James Clark <james.clark@linaro.org>