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

[James Clark <james.clark@linaro.org>]

On 05/06/2025 11:48 am, James Clark wrote:
> 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,

Gentle ping, thanks