On Thu, 10 Mar 2022 14:09:24 GMT, Anton Kozlov <akoz...@openjdk.org> wrote:
> > > Is it possible to change SafeFetch only? Switch to WXExec before calling > > > the stub and switch WXWrite back unconditionally? We won't need to > > > provide assert in ThreadWXEnable. But SafeFetch can check the assumption > > > with assert via Thread, if it exists. > > > > > > But SafeFetch could be used from outside code as well as VM code. In case > > of the latter, prior state can either be WXWrite or WXExec. It needs to > > restore the prior state after the call. > > I'm not sure I understand what is the "outside code". The SafeFetch is the > private hotspot function, it cannot be linked with non-JVM code, isn't it? Sorry for being imprecise. I meant SafeFetch is triggered from within a signal handler that runs on a foreign thread. E.g. AGCT or error handling. ------------- PR: https://git.openjdk.java.net/jdk/pull/7727
