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at_keyboard flush on i386-qemu
From: |
Robert Millan |
Subject: |
at_keyboard flush on i386-qemu |
Date: |
Sat, 27 Jun 2009 13:25:21 +0200 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
Hi,
Pavel pointed out earlier that sometimes when starting on i386-qemu GRUB
receives spurious events from AT keyboard. It seems that it is the role
of the firmware to flush this buffer at startup.
Unless someone has a better idea, I would fix this with:
- Moving at_keyboard to kernel on i386-qemu.
- [ifdef GRUB_MACHINE_QEMU]: flush the input buffer at at_keyboard
startup by reading and discarding events for a fixed amount of time.
I don't like that we have a race here. Suggestions welcome on how to
improve that, but TTBOMK if there's more than one event you can't tell
when you're processing the last one.
--
Robert Millan
The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
how) you may access your data; but nobody's threatening your freedom: we
still allow you to remove your data and not access it at all."
- at_keyboard flush on i386-qemu,
Robert Millan <=