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From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, maz@kernel.org,
	catalin.marinas@arm.com, mark.rutland@arm.com,
	james.morse@arm.com, anshuman.khandual@arm.com,
	leo.yan@linaro.org, mike.leach@linaro.org,
	mathieu.poirier@linaro.org, lcherian@marvell.com,
	coresight@lists.linaro.org
Subject: Re: [PATCH v2 00/17] arm64: Self-hosted trace related errata workarounds
Date: Fri, 8 Oct 2021 10:25:03 +0100	[thread overview]
Message-ID: <b2527493-d4ca-2c42-eb22-7e8ddbe50279@arm.com> (raw)
In-Reply-To: <20211008073229.GB32625@willie-the-truck>

Hi Will

On 08/10/2021 08:32, Will Deacon wrote:
> Hi Suzuki,
> 
> On Tue, Sep 21, 2021 at 02:41:04PM +0100, Suzuki K Poulose wrote:
>> This series adds CPU erratum work arounds related to the self-hosted
>> tracing. The list of affected errata handled in this series are :
>>
>>   * TRBE may overwrite trace in FILL mode
>>     - Arm Neoverse-N2	#2139208
>>     - Cortex-A710	#211985
>>
>>   * A TSB instruction may not flush the trace completely when executed
>>     in trace prohibited region.
>>
>>     - Arm Neoverse-N2	#2067961
>>     - Cortex-A710	#2054223
>>
>>   * TRBE may write to out-of-range address
>>     - Arm Neoverse-N2	#2253138
>>     - Cortex-A710	#2224489
>>
>> The series applies on the self-hosted/trbe fixes posted here [0].
>> A tree containing both the series is available here [1]
> 
> Any chance you could put the arch/arm64/ bits at the start of the series,
> please? That way, I can queue them on their own branch which can be shared
> with the coresight tree.

I could move the bits around. I have a question though.

Will, Catalin, Mathieu,

The workaround for these errata, at least two of them are
in the TRBE driver patches. Are we happy with enabling the Kconfig
entry in the kernel, without the CoreSight patches to implement the work
around ?

Suzuki

  reply	other threads:[~2021-10-08  9:25 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-21 13:41 [PATCH v2 00/17] arm64: Self-hosted trace related errata workarounds Suzuki K Poulose
2021-09-21 13:41 ` [PATCH v2 01/17] coresight: trbe: Fix incorrect access of the sink specific data Suzuki K Poulose
2021-09-22  5:41   ` Anshuman Khandual
2021-09-30 17:57   ` Mathieu Poirier
2021-09-21 13:41 ` [PATCH v2 02/17] coresight: trbe: Add infrastructure for Errata handling Suzuki K Poulose
2021-09-22  6:47   ` Anshuman Khandual
2021-10-05 16:46   ` Mathieu Poirier
2021-09-21 13:41 ` [PATCH v2 03/17] coresight: trbe: Add a helper to calculate the trace generated Suzuki K Poulose
2021-09-30 17:54   ` Mathieu Poirier
2021-10-01  8:36     ` Suzuki K Poulose
2021-10-01 15:15       ` Mathieu Poirier
2021-10-01 15:22         ` Suzuki K Poulose
2021-09-21 13:41 ` [PATCH v2 04/17] coresight: trbe: Add a helper to pad a given buffer area Suzuki K Poulose
2021-09-21 13:41 ` [PATCH v2 05/17] coresight: trbe: Decouple buffer base from the hardware base Suzuki K Poulose
2021-09-21 13:41 ` [PATCH v2 06/17] coresight: trbe: Allow driver to choose a different alignment Suzuki K Poulose
2021-09-21 13:41 ` [PATCH v2 07/17] arm64: Add Neoverse-N2, Cortex-A710 CPU part definition Suzuki K Poulose
2021-09-22  6:57   ` Anshuman Khandual
2021-09-21 13:41 ` [PATCH v2 08/17] arm64: Add erratum detection for TRBE overwrite in FILL mode Suzuki K Poulose
2021-09-21 13:41 ` [PATCH v2 09/17] coresight: trbe: Workaround TRBE errata " Suzuki K Poulose
2021-09-23  6:13   ` Anshuman Khandual
2021-09-28 10:40     ` Suzuki K Poulose
2021-10-01  4:21       ` Anshuman Khandual
2021-10-01 17:15   ` Mathieu Poirier
2021-10-04  8:46     ` Suzuki K Poulose
2021-10-04 16:47       ` Mathieu Poirier
2021-09-21 13:41 ` [PATCH v2 10/17] arm64: Enable workaround for TRBE " Suzuki K Poulose
2021-09-22  7:23   ` Anshuman Khandual
2021-09-22  8:11     ` Suzuki K Poulose
2021-10-01  4:35       ` Anshuman Khandual
2021-10-07 16:09   ` Catalin Marinas
2021-09-21 13:41 ` [PATCH v2 11/17] arm64: errata: Add workaround for TSB flush failures Suzuki K Poulose
2021-09-22  7:39   ` Anshuman Khandual
2021-09-22 12:03     ` Suzuki K Poulose
2021-10-01  4:38       ` Anshuman Khandual
2021-10-07 16:10   ` Catalin Marinas
2021-09-21 13:41 ` [PATCH v2 12/17] coresight: trbe: Add a helper to fetch cpudata from perf handle Suzuki K Poulose
2021-09-22  7:59   ` Anshuman Khandual
2021-10-04 17:42   ` Mathieu Poirier
2021-10-05 22:35     ` Suzuki K Poulose
2021-10-06 17:15       ` Mathieu Poirier
2021-10-07  9:18         ` Suzuki K Poulose
2021-09-21 13:41 ` [PATCH v2 13/17] coresight: trbe: Add a helper to determine the minimum buffer size Suzuki K Poulose
2021-09-22  9:51   ` Anshuman Khandual
2021-09-21 13:41 ` [PATCH v2 14/17] coresight: trbe: Make sure we have enough space Suzuki K Poulose
2021-09-22  9:58   ` Anshuman Khandual
2021-09-22 10:16     ` Suzuki K Poulose
2021-10-01  4:40       ` Anshuman Khandual
2021-09-21 13:41 ` [PATCH v2 15/17] arm64: Add erratum detection for TRBE write to out-of-range Suzuki K Poulose
2021-09-22 10:59   ` Anshuman Khandual
2021-10-07 16:10   ` Catalin Marinas
2021-09-21 13:41 ` [PATCH v2 16/17] coresight: trbe: Work around write to out of range Suzuki K Poulose
2021-09-23  3:15   ` Anshuman Khandual
2021-09-28 10:32     ` Suzuki K Poulose
2021-10-01  4:56       ` Anshuman Khandual
2021-09-21 13:41 ` [PATCH v2 17/17] arm64: Advertise TRBE erratum workaround for write to out-of-range address Suzuki K Poulose
2021-09-22 11:03   ` Anshuman Khandual
2021-10-07 16:11   ` Catalin Marinas
2021-10-05 17:04 ` [PATCH v2 00/17] arm64: Self-hosted trace related errata workarounds Mathieu Poirier
2021-10-08  7:32 ` Will Deacon
2021-10-08  9:25   ` Suzuki K Poulose [this message]
2021-10-08  9:52     ` Will Deacon
2021-10-08  9:57       ` Suzuki K Poulose

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