[Xen-devel] Re: [PATCH] Paravirt framebuffer backend tools [2/5]

[Anthony Liguori <aliguori@xxxxxxxxxx>]

Stephen C. Tweedie wrote:
> Hi,
>
> Bear in mind that it may simply not be possible.  :-(
Right, this is my understanding of the problem.

I think the best we can do is use a keymap in the host to translate from 
whatever keycodes we're getting to PC scancodes and then leave it up to 
the guest to convert the scancodes based on whatever keymap they're using.
This is what rdesktop and qemu do.

Regards,

Anthony Liguori

> An example is my UK keyboard connecting to a guest with a US keymap.
> For me, "#" is a key on its own (with "~" as the shift-modified key.)
> When I type "#", with no modifier pressed, there is simply no way to
> translate that to a single keycode on a US keymap and get the "#" ksym
> out --- on a US keyboard, "#" requires shift to be held down.
>
> The only way you'll get such a keypress through is by faking modifiers
> on the fly.
>
> --Stephen

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