On Fri, Nov 4, 2022 at 10:55 AM Rob Herring <robh@xxxxxxxxxx> wrote:
>
> This series adds support for Arm SPEv1.2 which is part of the
> Armv8.7/Armv9.2 architecture. There's 2 new features that affect the
> kernel: a new event filter bit, branch 'not taken', and an inverted
> event filter register.
>
> Since this support adds new registers and fields, first the SPE register
> defines are converted to automatic generation.
>
> Note that the 'config3' addition in sysfs format files causes SPE to
> break. A stable fix e552b7be12ed ("perf: Skip and warn on unknown format
> 'configN' attrs") landed in v6.1-rc1.
>
> The perf tool side changes are available here[1].
>
> Tested on FVP.
>
> [1] https://lore.kernel.org/all/20220914-arm-perf-tool-spe1-2-v2-v4-0-83c098e6212e@xxxxxxxxxx/
>
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
> ---
> Changes in v3:
> - Add some more missing SPE register fields and use Enums for some
> fields
> - Use the new PMSIDR_EL1 register Enum defines in the SPE driver
> - Link to v2: https://lore.kernel.org/r/20220825-arm-spe-v8-7-v2-0-e37322d68ac0@xxxxxxxxxx
>
> Changes in v2:
> - Convert the SPE register defines to automatic generation
> - Fixed access to SYS_PMSNEVFR_EL1 when not present
> - Rebase on v6.1-rc1
> - Link to v1: https://lore.kernel.org/r/20220825-arm-spe-v8-7-v1-0-c75b8d92e692@xxxxxxxxxx
>
> ---
> Rob Herring (8):
> perf: arm_spe: Use feature numbering for PMSEVFR_EL1 defines
> arm64: Drop SYS_ from SPE register defines
> arm64/sysreg: Convert SPE registers to automatic generation
> perf: arm_spe: Drop BIT() and use FIELD_GET/PREP accessors
> perf: arm_spe: Use new PMSIDR_EL1 register enums
> perf: arm_spe: Support new SPEv1.2/v8.7 'not taken' event
> perf: Add perf_event_attr::config3
> perf: arm_spe: Add support for SPEv1.2 inverted event filtering
>
> arch/arm64/include/asm/el2_setup.h | 6 +-
> arch/arm64/include/asm/sysreg.h | 99 +++--------------------
> arch/arm64/kvm/debug.c | 2 +-
> arch/arm64/kvm/hyp/nvhe/debug-sr.c | 2 +-
> arch/arm64/tools/sysreg | 139 +++++++++++++++++++++++++++++++++
> drivers/perf/arm_spe_pmu.c | 156 ++++++++++++++++++++++++-------------
> include/uapi/linux/perf_event.h | 3 +
> 7 files changed, 257 insertions(+), 150 deletions(-)
Will, any comments on this series?
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