This patch adds a HowTo document to lldb docs which gives instruction on how to setup QEMU environment for modern Arm64 features not released in publicly available hardware till date.
More generally this howto can be applied to other architecture types supported by QEMU emulator. This may help setup a lldb test environment for all supported architecture/platform types.
What's the reason you chose to refer to the README in the source tree instead of converting it to an RST page and linking to that page from here? I think it's good to have an entry here rather than the whole document, but I still think this should be a hyperlink to its own page.