arm erratum support on v8?

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Hidenori Yamaji

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Jun 17, 2015, 2:06:32 AM6/17/15
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Do we have any support for ARM Cortex-A53  erratum #835769 on v8?

In JavaScriptCore, there is a support for ARM Cortex-A53 erratum #835769 (that's discussed in https://bugs.webkit.org/show_bug.cgi?id=138315).
So I guess we need to have similar support on v8 to avoid the erratum on v8 in AArch64 state.

$ git log --grep="835769"  git log --grep="erratum", etc don't say anything.

And then actually it seems not to be supported on v8 as of now.


Rodolph Perfetta

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Jun 18, 2015, 1:45:17 PM6/18/15
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Hi,

Currently V8 is not affected by the erratum hence the lack of fix. V8 is a very fast moving code base so this may change in the future.

If you build V8 form source you must ensure your compiler has the fix though.

Regards,
Rodolph.

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Hidenori Yamaji

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Jun 24, 2015, 1:55:56 AM6/24/15
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Hi, Rodolph-san,

Thank you for the clarification.
I confirmed that current ADRP instruction is not used in V8. And then 843419 is not happened.
But how about 835769?

BR,
 Hidenori Yamaji

2015年6月19日金曜日 2時45分17秒 UTC+9 Rodolph Perfetta:

Rodolph Perfetta

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Jun 26, 2015, 12:41:52 PM6/26/15
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Hi Hidenori-san,

The erratum you mentioned does not occur in code generated by V8.

Regards,
Rodolph.
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