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Mon, 30 Jun 2025 06:26:16 -0700 (PDT) Message-ID: <5ecf74f6-08a0-474c-b0ff-32075af7ae03@linaro.org> Date: Mon, 30 Jun 2025 14:26:14 +0100 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 00/10] perf: arm_spe: Armv8.8 SPE features To: Will Deacon , Mark Rutland , Marc Zyngier , Arnaldo Carvalho de Melo , Namhyung Kim Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-doc@vger.kernel.org, kvmarm@lists.linux.dev, Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Peter Zijlstra , Ingo Molnar , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , leo.yan@arm.com, Jonathan Corbet , Catalin Marinas References: <20250605-james-perf-feat_spe_eft-v3-0-71b0c9f98093@linaro.org> Content-Language: en-US From: James Clark In-Reply-To: <20250605-james-perf-feat_spe_eft-v3-0-71b0c9f98093@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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