Now that everything is in place, let's get the ball rolling by allowing the corresponding config option to be selected. Also add the required information to silicon_arrata.rst. Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx> --- Documentation/arm64/silicon-errata.rst | 4 ++++ arch/arm64/Kconfig | 10 ++++++++++ 2 files changed, 14 insertions(+) diff --git a/Documentation/arm64/silicon-errata.rst b/Documentation/arm64/silicon-errata.rst index 3e57d09246e6..b90a977fc748 100644 --- a/Documentation/arm64/silicon-errata.rst +++ b/Documentation/arm64/silicon-errata.rst @@ -70,8 +70,12 @@ stable kernels. +----------------+-----------------+-----------------+-----------------------------+ | ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_834220 | +----------------+-----------------+-----------------+-----------------------------+ +| ARM | Cortex-A57 | #1319537 | ARM64_ERRATUM_1319367 | ++----------------+-----------------+-----------------+-----------------------------+ | ARM | Cortex-A72 | #853709 | N/A | +----------------+-----------------+-----------------+-----------------------------+ +| ARM | Cortex-A72 | #1319367 | ARM64_ERRATUM_1319367 | ++----------------+-----------------+-----------------+-----------------------------+ | ARM | Cortex-A73 | #858921 | ARM64_ERRATUM_858921 | +----------------+-----------------+-----------------+-----------------------------+ | ARM | Cortex-A55 | #1024718 | ARM64_ERRATUM_1024718 | diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 3adcec05b1f6..c50cd4f83bc4 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -523,6 +523,16 @@ config ARM64_ERRATUM_1286807 invalidated has been observed by other observers. The workaround repeats the TLBI+DSB operation. +config ARM64_ERRATUM_1319367 + bool "Cortex-A57/A72: Speculative AT instruction using out-of-context translation regime could cause subsequent request to generate an incorrect translation" + default y + help + This option adds work arounds for ARM Cortex-A57 erratum 1319537 + and A72 erratum 1319367 + + Cortex-A57 and A72 cores could end-up with corrupted TLBs by + speculating an AT instruction during a guest context switch. + If unsure, say Y. config ARM64_ERRATUM_1463225 -- 2.20.1
