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Date: Thu, 16 Apr 2020 13:57:36 +0100
From: Mark Rutland <mark.rutland@....com>
To: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
Arnd Bergmann <arnd@...db.de>, linux-arm-msm@...r.kernel.org,
Andy Gross <agross@...nel.org>, Wei Xu <xuwei5@...ilicon.com>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
Robert Richter <rrichter@...vell.com>,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] arm64: Sort vendor-specific errata
On Thu, Apr 16, 2020 at 01:56:57PM +0200, Geert Uytterhoeven wrote:
> Sort configuration options for vendor-specific errata by vendor, to
> increase uniformity.
> Move ARM64_WORKAROUND_REPEAT_TLBI up, as it is also selected by
> ARM64_ERRATUM_1286807.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
This makes sense to me, so FWIW:
Acked-by: Mark Rutland <mark.rutland@....com>
Mark.
> ---
> arch/arm64/Kconfig | 72 +++++++++++++++++++++++-----------------------
> 1 file changed, 36 insertions(+), 36 deletions(-)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 40fb05d96c6072c9..8d33d7fed6d8549b 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -553,6 +553,9 @@ config ARM64_ERRATUM_1530923
>
> If unsure, say Y.
>
> +config ARM64_WORKAROUND_REPEAT_TLBI
> + bool
> +
> config ARM64_ERRATUM_1286807
> bool "Cortex-A76: Modification of the translation table for a virtual address might lead to read-after-read ordering violation"
> default y
> @@ -694,6 +697,35 @@ config CAVIUM_TX2_ERRATUM_219
>
> If unsure, say Y.
>
> +config FUJITSU_ERRATUM_010001
> + bool "Fujitsu-A64FX erratum E#010001: Undefined fault may occur wrongly"
> + default y
> + help
> + This option adds a workaround for Fujitsu-A64FX erratum E#010001.
> + On some variants of the Fujitsu-A64FX cores ver(1.0, 1.1), memory
> + accesses may cause undefined fault (Data abort, DFSC=0b111111).
> + This fault occurs under a specific hardware condition when a
> + load/store instruction performs an address translation using:
> + case-1 TTBR0_EL1 with TCR_EL1.NFD0 == 1.
> + case-2 TTBR0_EL2 with TCR_EL2.NFD0 == 1.
> + case-3 TTBR1_EL1 with TCR_EL1.NFD1 == 1.
> + case-4 TTBR1_EL2 with TCR_EL2.NFD1 == 1.
> +
> + The workaround is to ensure these bits are clear in TCR_ELx.
> + The workaround only affects the Fujitsu-A64FX.
> +
> + If unsure, say Y.
> +
> +config HISILICON_ERRATUM_161600802
> + bool "Hip07 161600802: Erroneous redistributor VLPI base"
> + default y
> + help
> + The HiSilicon Hip07 SoC uses the wrong redistributor base
> + when issued ITS commands such as VMOVP and VMAPP, and requires
> + a 128kB offset to be applied to the target address in this commands.
> +
> + If unsure, say Y.
> +
> config QCOM_FALKOR_ERRATUM_1003
> bool "Falkor E1003: Incorrect translation due to ASID change"
> default y
> @@ -705,9 +737,6 @@ config QCOM_FALKOR_ERRATUM_1003
> is unchanged. Work around the erratum by invalidating the walk cache
> entries for the trampoline before entering the kernel proper.
>
> -config ARM64_WORKAROUND_REPEAT_TLBI
> - bool
> -
> config QCOM_FALKOR_ERRATUM_1009
> bool "Falkor E1009: Prematurely complete a DSB after a TLBI"
> default y
> @@ -729,25 +758,6 @@ config QCOM_QDF2400_ERRATUM_0065
>
> If unsure, say Y.
>
> -config SOCIONEXT_SYNQUACER_PREITS
> - bool "Socionext Synquacer: Workaround for GICv3 pre-ITS"
> - default y
> - help
> - Socionext Synquacer SoCs implement a separate h/w block to generate
> - MSI doorbell writes with non-zero values for the device ID.
> -
> - If unsure, say Y.
> -
> -config HISILICON_ERRATUM_161600802
> - bool "Hip07 161600802: Erroneous redistributor VLPI base"
> - default y
> - help
> - The HiSilicon Hip07 SoC uses the wrong redistributor base
> - when issued ITS commands such as VMOVP and VMAPP, and requires
> - a 128kB offset to be applied to the target address in this commands.
> -
> - If unsure, say Y.
> -
> config QCOM_FALKOR_ERRATUM_E1041
> bool "Falkor E1041: Speculative instruction fetches might cause errant memory access"
> default y
> @@ -758,22 +768,12 @@ config QCOM_FALKOR_ERRATUM_E1041
>
> If unsure, say Y.
>
> -config FUJITSU_ERRATUM_010001
> - bool "Fujitsu-A64FX erratum E#010001: Undefined fault may occur wrongly"
> +config SOCIONEXT_SYNQUACER_PREITS
> + bool "Socionext Synquacer: Workaround for GICv3 pre-ITS"
> default y
> help
> - This option adds a workaround for Fujitsu-A64FX erratum E#010001.
> - On some variants of the Fujitsu-A64FX cores ver(1.0, 1.1), memory
> - accesses may cause undefined fault (Data abort, DFSC=0b111111).
> - This fault occurs under a specific hardware condition when a
> - load/store instruction performs an address translation using:
> - case-1 TTBR0_EL1 with TCR_EL1.NFD0 == 1.
> - case-2 TTBR0_EL2 with TCR_EL2.NFD0 == 1.
> - case-3 TTBR1_EL1 with TCR_EL1.NFD1 == 1.
> - case-4 TTBR1_EL2 with TCR_EL2.NFD1 == 1.
> -
> - The workaround is to ensure these bits are clear in TCR_ELx.
> - The workaround only affects the Fujitsu-A64FX.
> + Socionext Synquacer SoCs implement a separate h/w block to generate
> + MSI doorbell writes with non-zero values for the device ID.
>
> If unsure, say Y.
>
> --
> 2.17.1
>
>
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