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SubjectRe: [PATCH v5 4/6] arm64: mte: Enable async tag check fault
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On 1/21/21 5:38 PM, Andrey Konovalov wrote:
>> + if (unlikely(tfsr_el1 & SYS_TFSR_EL1_TF1)) {
>> + /*
>> + * Note: isb() is not required after this direct write
>> + * because there is no indirect read subsequent to it
>> + * (per ARM DDI 0487F.c table D13-1).
>> + */
>> + write_sysreg_s(0, SYS_TFSR_EL1);
>> +
>> + kasan_report_async();
> Do we need a static bool reported like in do_tag_recovery() here?
>

I would say not because async mode does not get disabled after the first fault.

--
Regards,
Vincenzo

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