On Mon, Oct 09, 2023 at 05:06:45PM +0200, Miguel Ojeda wrote:

On Mon, Oct 9, 2023 at 4:52 PM Greg KH [off-list ref] wrote:

quoted

Then the main CONFIG_HAVE_RUST should have that dependency, don't force
it on each individual driver.

Yes, that is what I meant (well, `CONFIG_RUST` is where we have the
other restrictions).

Oops, yes, add it there please.

quoted

But note, that is probably not a good marketing statement as you are
forced to make your system more insecure in order to use the "secure"
language :(

Indeed, but until we catch up on that, it is what it is; i.e. it is
not something that we want to keep there, it has to go away to make it
viable.

Is anyone working on the needed compiler changes for this to work
properly on x86?

The other option we discussed back then was to print a big banner or
something at runtime, but that is also not great (and people would
still see warnings at build time -- for good reason).

No, please don't do that, you would be making systems insecure and the
mix of a kernel image with, and without, RET statements in it is going
to be a huge mess.  Just disable CONFIG_RUST for now until proper
retbleed support is added to the compiler.

thanks,

greg k-h