RFR(m): 8220351: Cross-modifying code

[Andrew Haley]

On 3/15/19 1:16 AM, David Holmes wrote:
> I suppose that if the optimising results in the barrier locations being 
> pushed "deep enough" they may end up in platform-specific code after 
> all. But it's far from clear to me that we will always enter platform 
> specific code.

On AArch64 we do an ISB when returning from native to Java. I can't see
any code path which can execute patched Java code but does not do that.
That doesn't mean there isn't one, I guess.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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