On Mon, 21 Oct 2024 18:31:39 +0200 Heiko Carstens <hca@xxxxxxxxxxxxx> wrote: > > > Please note that this only works for addresses in the kernel address > > > space. For user space the full 64 bit address range (minus the top > > > page) can be used for user space applications. > > > > I wonder what is the unsigned long size (stack entry size) of the > > s390? is it 64bit? > > The s390 kernel is 64 bit only. So unsigned long is 64 bit as well. > Ah, got it. > > > I'm just writing this > > > here, just in case something like this comes up for uprobes or > > > something similar as well. > > > > I'm considering another solution if it doesn't work. Of course if > > above works, it is the best compression ratio. > > I'm think we are not talking about uprobes here, and everything ftrace > related would just work (tm) with the first four MSBs assumed to be > zero. yeah, but we still have other 32bit architectures support (e.g. i386, arm). Thank you, -- Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
