RFR: vthreads don't support the reserved stack zone

[Dean Long]

On Thu, 24 Mar 2022 08:37:07 GMT, Dean Long <dlong at openjdk.org> wrote:

> vthreads don't support the reserved stack zone

I can also imagine doing something like:

bool JavaThread::stack_reserved_zone_supported()

or

static bool FeaturesSupport::stack_reserved_zone_supported(JavaThread *)

but it seems like overkill.

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PR: https://git.openjdk.java.net/loom/pull/120