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From: | Tomasz Chmielewski |
Subject: | Re: [Qemu-devel] [Fwd: Re: i8042 buffer size?] |
Date: | Tue, 26 May 2009 00:57:43 +0200 |
User-agent: | Thunderbird 2.0.0.21 (X11/20090319) |
Tomasz Chmielewski wrote:
Marcelo Tosatti wrote:18 ff 00 18 ff 00 18 ff 00 18 fe 00 18 ff 00 18 ff 00 18 fe 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 08 00 01 18 ff 00 18 ff 00 18 ff 01 18 ff 00 08 00 01 18 ff 00 18 fe 02 18 ff 00 18 ff 00 18 ff 01 18 fd 00 18 fd 00 18 fa 00 18 f7 00 18 f7 00 18 f4 00 18 f3 00 18 ef 00 18 ee 01 18 ed 03 18 ec 04 18 e9 02 08 7f 08 08 7f 00 08 44 00 09 00 00 19 fc 01 08 00 00 38 81 ff 18 92 00This looks seriously like uninitialized memory (12-bit FAT perhaps?) - and very much like a Qemu bug. It doesn't even make sense if interpreted as keyboard scancodes - 00 is reserved and ff is an error condition.Tomasz, Can you provide a recipe on how to reproduce this?I used it with KVM, but it doesn't look KVM specific. I'll see if it happens with "pure" Qemu.
I just reproduced it with "pure" Qemu, no kqemu or kvm module. I booted off SystemRescueCd: http://www.sysresccd.org/Download The system was started with this command line:/usr/bin/qemu -boot d -m 256 -cdrom '/usr/src/systemrescuecd-x86-1.2.0.iso' -net nic,vlan=0 -net user,vlan=0 -localtime &
I was just tapping the keys on the keyboard during BIOS phase, bootloader and kernel booting.
-- Tomasz Chmielewski http://wpkg.org
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