On Tue, Apr 26, 2016 at 11:16:20PM +0200, Johannes Krottmayer wrote:
Am 2016-04-26 um 22:38 schrieb Kevin O'Connor: [...]
To report a SeaBIOS issue, the SeaBIOS log is needed. Please see http://www.seabios.org/Debugging#Diagnostic_information
$ qemu-system-x86_64 -chardev stdio,id=seabios -device isa-debugcon,iobase=0x402,chardev=seabios -bios ../qemu/seabios-1.9.2/out/bios.bin -machine pc,accel=kvm -cpu core2duo -m 2048 -smp 2 -hda win10.img -boot c SeaBIOS (version 1.9.2-20160426_212753-zeus)
[...]
Booting from Hard Disk... Booting from 0000:7c00 KVM internal error. Suberror: 1 emulation failure
It appears the fault is occurring in the OS bootloader, not in the SeaBIOS code.
[...]
QEMU output with SeaBIOS 1.9.0 and above:
Did it work with some prior version of SeaBIOS?
Yes. Tested it with the default version (1.7.2.2) of my distribution, 1.8.0, 1.8.1 and version 1.8.2.
It's odd that it works with a different SeaBIOS version. You could try bisecting between 1.8.0 and 1.9.2 to see what change the crash starts at - but be aware that random differences in the SeaBIOS binary might be tickling the underlying issue.
You could also try reporting to the kvm list - they'll know how to interpret the cpu dump.
-Kevin