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From: Marc Zyngier <maz@kernel.org>
To: Konrad Dybcio <konrad.dybcio@somainline.org>
Cc: phone-devel@vger.kernel.org,
	~postmarketos/upstreaming@lists.sr.ht,
	martin.botka@somainline.org,
	angelogioacchino.delregno@somainline.org,
	marijn.suijten@somainline.org,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
	Stephen Boyd <swboyd@chromium.org>, Rob Herring <robh@kernel.org>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Steven Price <steven.price@arm.com>,
	Mark Brown <broonie@kernel.org>, Andrew Scull <ascull@google.com>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	Amit Daniel Kachhap <amit.kachhap@arm.com>,
	Ionela Voinescu <ionela.voinescu@arm.com>,
	Kristina Martsenko <kristina.martsenko@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/4] arm64: cpu_errata: Apply Erratum 845719 to KRYO2XX Silver
Date: Thu, 05 Nov 2020 09:29:37 +0000	[thread overview]
Message-ID: <3faa81d537320dfb20bb3f882cfaea1b@kernel.org> (raw)
In-Reply-To: <20201104232218.198800-5-konrad.dybcio@somainline.org>

On 2020-11-04 23:22, Konrad Dybcio wrote:
> QCOM KRYO2XX Silver cores are Cortex-A53 based and are
> susceptible to the 845719 erratum. Add them to the lookup
> list to apply the erratum.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
> ---
>  arch/arm64/kernel/cpu_errata.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/kernel/cpu_errata.c 
> b/arch/arm64/kernel/cpu_errata.c
> index 61314fd70f13..cafaf0da05b7 100644
> --- a/arch/arm64/kernel/cpu_errata.c
> +++ b/arch/arm64/kernel/cpu_errata.c
> @@ -299,6 +299,8 @@ static const struct midr_range 
> erratum_845719_list[] = {
>  	MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 4),
>  	/* Brahma-B53 r0p[0] */
>  	MIDR_REV(MIDR_BRAHMA_B53, 0, 0),
> +	/* Kryo2XX Silver rAp4 */
> +	MIDR_REV(MIDR_QCOM_KRYO_2XX_SILVER, 0xa, 0x4),

Is this the only affected version? If this is actually an A53, how do 
the
revisions map between Kryo and Cortex cores?

         M.
-- 
Jazz is not dead. It just smells funny...

WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: Konrad Dybcio <konrad.dybcio@somainline.org>
Cc: Rob Herring <robh@kernel.org>,
	Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
	Ionela Voinescu <ionela.voinescu@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	linux-kernel@vger.kernel.org,
	Kristina Martsenko <kristina.martsenko@arm.com>,
	Stephen Boyd <swboyd@chromium.org>,
	Mark Brown <broonie@kernel.org>,
	martin.botka@somainline.org,
	~postmarketos/upstreaming@lists.sr.ht,
	angelogioacchino.delregno@somainline.org,
	Amit Daniel Kachhap <amit.kachhap@arm.com>,
	marijn.suijten@somainline.org, phone-devel@vger.kernel.org,
	Will Deacon <will@kernel.org>,
	Steven Price <steven.price@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	Andrew Scull <ascull@google.com>
Subject: Re: [PATCH 4/4] arm64: cpu_errata: Apply Erratum 845719 to KRYO2XX Silver
Date: Thu, 05 Nov 2020 09:29:37 +0000	[thread overview]
Message-ID: <3faa81d537320dfb20bb3f882cfaea1b@kernel.org> (raw)
In-Reply-To: <20201104232218.198800-5-konrad.dybcio@somainline.org>

On 2020-11-04 23:22, Konrad Dybcio wrote:
> QCOM KRYO2XX Silver cores are Cortex-A53 based and are
> susceptible to the 845719 erratum. Add them to the lookup
> list to apply the erratum.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
> ---
>  arch/arm64/kernel/cpu_errata.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/kernel/cpu_errata.c 
> b/arch/arm64/kernel/cpu_errata.c
> index 61314fd70f13..cafaf0da05b7 100644
> --- a/arch/arm64/kernel/cpu_errata.c
> +++ b/arch/arm64/kernel/cpu_errata.c
> @@ -299,6 +299,8 @@ static const struct midr_range 
> erratum_845719_list[] = {
>  	MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 4),
>  	/* Brahma-B53 r0p[0] */
>  	MIDR_REV(MIDR_BRAHMA_B53, 0, 0),
> +	/* Kryo2XX Silver rAp4 */
> +	MIDR_REV(MIDR_QCOM_KRYO_2XX_SILVER, 0xa, 0x4),

Is this the only affected version? If this is actually an A53, how do 
the
revisions map between Kryo and Cortex cores?

         M.
-- 
Jazz is not dead. It just smells funny...

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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2020-11-05  9:29 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-04 23:22 [PATCH 0/4] Add KRYO2XX Errata / mitigations data Konrad Dybcio
2020-11-04 23:22 ` Konrad Dybcio
2020-11-04 23:22 ` [PATCH 1/4] arm64: Add MIDR value for KRYO2XX gold/silver CPU cores Konrad Dybcio
2020-11-04 23:22   ` Konrad Dybcio
2020-11-04 23:22 ` [PATCH 2/4] arm64: kpti: Add KRYO2XX gold/silver CPU cores to kpti safelist Konrad Dybcio
2020-11-04 23:22   ` Konrad Dybcio
2020-11-04 23:22 ` [PATCH 3/4] arm64: proton-pack: Add KRYO2XX silver CPUs to spectre-v2 safe-list Konrad Dybcio
2020-11-04 23:22   ` Konrad Dybcio
2020-11-04 23:22 ` [PATCH 4/4] arm64: cpu_errata: Apply Erratum 845719 to KRYO2XX Silver Konrad Dybcio
2020-11-04 23:22   ` Konrad Dybcio
2020-11-05  9:29   ` Marc Zyngier [this message]
2020-11-05  9:29     ` Marc Zyngier
2020-11-05 11:24     ` Konrad Dybcio
2020-11-05 11:24       ` Konrad Dybcio
2020-11-09  9:36     ` Sai Prakash Ranjan
2020-11-09  9:36       ` Sai Prakash Ranjan
2020-11-09 19:28       ` Konrad Dybcio
2020-11-09 19:28         ` Konrad Dybcio
2020-11-10  5:56         ` Sai Prakash Ranjan
2020-11-10  5:56           ` Sai Prakash Ranjan
2020-11-05  9:33 ` [PATCH 0/4] Add KRYO2XX Errata / mitigations data Will Deacon
2020-11-05  9:33   ` Will Deacon
2020-11-10  7:00   ` Sai Prakash Ranjan
2020-11-10  7:00     ` Sai Prakash Ranjan
2020-11-13 11:27 ` Will Deacon
2020-11-13 11:27   ` Will Deacon

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