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From: John Garry <john.garry@huawei.com>
To: Hanjun Guo <guohanjun@huawei.com>, <lorenzo.pieralisi@arm.com>,
	<sudeep.holla@arm.com>, <robin.murphy@arm.com>,
	<mark.rutland@arm.com>,  <will@kernel.org>
Cc: nleeder@codeaurora.org, rjw@rjwysocki.net,
	linux-kernel@vger.kernel.org, linuxarm@huawei.com,
	iommu@lists.linux-foundation.org,
	linux-arm-kernel@lists.infradead.org, lenb@kernel.org
Subject: Re: [RFC PATCH 6/6] ACPI/IORT: Drop code to set the PMCG software-defined model
Date: Tue, 15 Oct 2019 09:47:12 +0100
Message-ID: <4de3b360-710f-e109-93bf-30ff942d08c1@huawei.com> (raw)
In-Reply-To: <e4e8adfd-a0af-82cb-c5f6-77153474330a@huawei.com>

On 15/10/2019 04:06, Hanjun Guo wrote:
>> -/*
>> > - * PMCG model identifiers for use in smmu pmu driver. Please note
>> > - * that this is purely for the use of software and has nothing to
>> > - * do with hardware or with IORT specification.
>> > - */
>> > -#define IORT_SMMU_V3_PMCG_GENERIC        0x00000000 /* Generic SMMUv3 PMCG */
>> > -#define IORT_SMMU_V3_PMCG_HISI_HIP08     0x00000001 /* HiSilicon HIP08 PMCG */
> Since only HiSilicon platform has such erratum, and I think it works with
> both old version of firmware, I'm fine with removing this erratum framework.
>

Yeah, seems a decent change on its own, even without the SMMU PMCG 
driver changes.

But we still need to check on patch "[PATCH RFC 2/6] iommu/arm-smmu-v3: 
Record IIDR in arm_smmu_device structure" to progress any of this.

Will, Robin, Any opinion on that patch?

https://lore.kernel.org/linux-iommu/1569854031-237636-1-git-send-email-john.garry@huawei.com/T/#m1e24771a23ee5426ec94ca2c4ec572642c155a77

> Acked-by: Hanjun Guo <guohanjun@huawei.com>

Cheers,
John

>
> Thanks
> Hanjun
>
>
> .
>


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Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-30 14:33 [RFC PATCH 0/6] SMMUv3 PMCG IMP DEF event support John Garry
2019-09-30 14:33 ` [RFC PATCH 1/6] ACPI/IORT: Set PMCG device parent John Garry
2019-10-15  2:35   ` Hanjun Guo
2019-10-15  9:07     ` John Garry
2019-09-30 14:33 ` [RFC PATCH 2/6] iommu/arm-smmu-v3: Record IIDR in arm_smmu_device structure John Garry
2019-09-30 14:33 ` [RFC PATCH 3/6] perf/smmuv3: Retrieve parent SMMUv3 IIDR John Garry
2019-09-30 14:33 ` [RFC PATCH 4/6] perf/smmuv3: Support HiSilicon hip08 (hi1620) IMP DEF events John Garry
2019-09-30 14:33 ` [RFC PATCH 5/6] perf/smmuv3: Match implementation options based on parent SMMU IIDR John Garry
2019-09-30 14:33 ` [RFC PATCH 6/6] ACPI/IORT: Drop code to set the PMCG software-defined model John Garry
2019-10-15  3:06   ` Hanjun Guo
2019-10-15  8:47     ` John Garry [this message]
2019-10-15 18:00 ` [RFC PATCH 0/6] SMMUv3 PMCG IMP DEF event support Robin Murphy
2019-10-16  8:47   ` John Garry
2019-10-16 10:51     ` Robin Murphy
2019-10-16 12:07       ` John Garry

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