On Sat, 5 Aug 2023 at 15:00, Lakshmana Reddy <sslakshmanre...@gmail.com> wrote: > I am working on an ubuntu machine and using the qemu platform for emulating > an x86 architecture .And i am having some doubts related to this work which > are mentioned as follows > > Can I emulate gpio driver pins inside the virtual environment running on qemu > ?
QEMU emulates GPIO for the purposes of being able to implement its own machine models (eg where an SD card card-detect line is wired to a GPIO controller in a particular SoC). It doesn't support "let the user connect GPIO lines to whatever they want in some external program". > Inside the virtual environment I couldn't ping any network, so is there any > possible way through which the virtual environment could connect with the > host/external environment which needs to be specified during the virtual > startup ? What networking are you using? With the default 'usermode' networking, ping does not work out of the box, so don't try to use ping as your test of whether networking is working. On Linux hosts, if you have root access you can give other users (like the user who runs QEMU) permissions to send ping packets. But generally there's no actual need for ping, so it's not always worth bothering. See https://wiki.qemu.org/Documentation/Networking and in particular the "Enabling ping in the guest, on Linux hosts" section. If you're using some other form of networking (eg tap mode) you won't have that particular problem, but tap mode is more complicated to set up. thanks -- PMM
