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Re: [Qemu-devel] [PULL 4/9] ps2: fix scancodes sent for Alt-Print key co
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] [PULL 4/9] ps2: fix scancodes sent for Alt-Print key combination (aka SysRq) |
Date: |
Wed, 01 Nov 2017 08:58:32 +0100 |
Hi,
> No one confirmed whether or not this new field needs to be added to
> the
> VMSTATE sections, and if so, how todo this in a back compatible
> manner....
Good question. Sky isn't falling if we don't send this over, worst
case is a minor keyboard glitch, affecting only the SysRq key, right?
Annoying things like sticky modifier keys should not happen. So I'd
tend to simply leave things as-is.
When sending it over we need a subsection for it. Simplest way would
be to only send over the section in the unlikely case that the field is
non-zero. But this might fail migration to older qemu versions in case
someone hits a modifier key the wrong moment. Alternatively send the
sibsection only on new machine types using a compat property, but that
needs a bit more boilerplate.
cheers,
Gerd
- Re: [Qemu-devel] [PULL 4/9] ps2: fix scancodes sent for Alt-Print key combination (aka SysRq),
Gerd Hoffmann <=