RFR: JDK-8325876: crashes in docker container tests on Linuxppc64le Power8 machines

[Martin Doerr]

On Thu, 15 Feb 2024 15:42:14 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> We could also add a comment here
> 
> ```
> flags-cflags.m4-809-      elif test "x$FLAGS_CPU" = xppc64le; then
> flags-cflags.m4-810-        # Little endian machine uses ELFv2 ABI.
> flags-cflags.m4-811-        # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
> flags-cflags.m4:812:        $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8"
> ```
> 
> The comment can point to the Ubuntu docker usage and state that we can switch to a higher Ubuntu version once we change the mcpu flag .

I guess that somebody will want to use Power 8 longer than IBM supports it. So, we can probably use a newer Ubuntu for supported test machines at some point of time, but not change -mcpu=power8.

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PR Comment: https://git.openjdk.org/jdk/pull/17867#issuecomment-1946565648