Re: [PATCH v3 3/3] arm64: Workaround for Cortex-A55 erratum 1530923

[Steven Price]

On 14/11/2019 10:27, Suzuki Kuruppassery Poulose wrote:
> On 13/11/2019 17:22, Steven Price wrote:
[...]
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index defb68e45387..d2dd72c19560 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -532,6 +532,19 @@ config ARM64_ERRATUM_1165522
>> Â ÂÂÂÂÂÂÂ If unsure, say Y.
>> Â +config ARM64_ERRATUM_1530923
>> +ÂÂÂ bool "Cortex-A55: Speculative AT instruction using out-of-context
>> translation regime could cause subsequent request to generate an
>> incorrect translation"
>> +ÂÂÂ default y
>> +ÂÂÂ select ARM64_WORKAROUND_SPECULATIVE_AT
> 
> ARM64_WORKAROUND_SPECULATIVE_AT_VHE ?

Thanks for spotting - annoyingly I don't even seem to get a warning from
Kconfig for this. I'll spin a v4 with your R-Bs on the other patches too
(thanks for those too).

Steve