That confirms my suspicion that the problem was WebKit's JIT generating code for a newer processor than P3. It might be that WebKit isn't recognizing your processor model properly and as a result doesn't configure JIT properly. If you could report this bug on your distribution's bug tracker or the WebKit bug tracker at https://bugs.webkit.org/, it might be possible to remove the workaround. Otherwise, glad you got it working.
That confirms my suspicion that the problem was WebKit's JIT generating code for a newer processor than P3. It might be that WebKit isn't recognizing your processor model properly and as a result doesn't configure JIT properly. If you could report this bug on your distribution's bug tracker or the WebKit bug tracker at https:/ /bugs.webkit. org/, it might be possible to remove the workaround. Otherwise, glad you got it working.