git: openjdk/loom: fibers: a workaround for guarantee on native method/intrinsic frame of enterSpecial

[duke]

Changeset: 765c6e61
Author:    Serguei Spitsyn <serguei.spitsyn at oracle.com>
Date:      2020-09-21 21:00:29 +0000
URL:       https://git.openjdk.java.net/loom/commit/765c6e61

a workaround for guarantee on native method/intrinsic frame of enterSpecial

! src/hotspot/share/prims/jvmtiEnvBase.cpp
! src/hotspot/share/runtime/vframe.cpp
! test/hotspot/jtreg/vmTestbase/nsk/jvmti/SuspendThread/suspendvthr001/suspendvthr001.cpp