RE: [PATCH v5 4/4] perf/smmuv3_pmu: Enable HiSilicon Erratum 162001800 quirk

2019-01-28 Thread Shameerali Kolothum Thodi
) ; > John Garry ; pa...@codeaurora.org; > vkil...@codeaurora.org; rruig...@codeaurora.org; linux-a...@vger.kernel.org; > linux-kernel@vger.kernel.org; linux-arm-ker...@lists.infradead.org; Linuxarm > ; neil.m.lee...@gmail.com > Subject: Re: [PATCH v5 4/4] perf/smmuv3_pmu: Enable

Re: [PATCH v5 4/4] perf/smmuv3_pmu: Enable HiSilicon Erratum 162001800 quirk

2019-01-25 Thread Robin Murphy
On 30/11/2018 15:47, Shameer Kolothum wrote: HiSilicon erratum 162001800 describes the limitation of SMMUv3 PMCG implementation on HiSilicon Hip08 platforms. On these platforms, the PMCG event counter registers (SMMU_PMCG_EVCNTRn) are read only and as a result it is not possible to set the

[PATCH v5 4/4] perf/smmuv3_pmu: Enable HiSilicon Erratum 162001800 quirk

2018-11-30 Thread Shameer Kolothum
HiSilicon erratum 162001800 describes the limitation of SMMUv3 PMCG implementation on HiSilicon Hip08 platforms. On these platforms, the PMCG event counter registers (SMMU_PMCG_EVCNTRn) are read only and as a result it is not possible to set the initial counter period value on event monitor

[PATCH v5 4/4] perf/smmuv3_pmu: Enable HiSilicon Erratum 162001800 quirk

2018-11-30 Thread Shameer Kolothum
HiSilicon erratum 162001800 describes the limitation of SMMUv3 PMCG implementation on HiSilicon Hip08 platforms. On these platforms, the PMCG event counter registers (SMMU_PMCG_EVCNTRn) are read only and as a result it is not possible to set the initial counter period value on event monitor