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SubjectRe: [PATCH v1 1/3] arm64: add a macro for SError synchronization
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On 2017/11/1 22:16, Mark Rutland wrote:
>> it will report Error.
> Alternatives cannot be nested. You need to define a cap like:
>
> ARM64_HAS_RAS_NOT_IESB
>
> ... which is set when ARM64_HAS_RAS_EXTN && !ARM64_HAS_IESB.
>
> Then you can do:
>
> alternative_if ARM64_HAS_RAS_NOT_IESB
> esb
> alternative_else_nop_endif
>
> See ARM64_ALT_PAN_NOT_UAO for an example.
>
> That said, as Robin points out we may not even need the alternative.

Ok, got it. thank you very much for your point and opinion


>
> Thanks,
> Mark.

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