Re: [Qemu-devel] winXP "Standard PC" HAL and qemu-kvm >= 0.15

[Jan Kiszka <jan.kiszka@web.de>]

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On 2011-12-06 21:58, Jan Kiszka wrote:
> On 2011-12-06 20:38, Michael Tokarev wrote:
>> [Removed some people from the Cc list]
>>
>> On 06.12.2011 22:45, Michael Tokarev wrote:
>> []
>>>> git://git.kiszka.org/qemu-kvm.git queues/kvm-irqchip
>>>
>>> This tree does not boot for me at all (on regular x86-64 setup) -
>>> it stays in bios after "Booting from hard disk" with 100% CPU
>>> usage.
>>
>> This happens since
>>
>> commit 1ae1cec76a205446e6b4e5600ad0af450f7c0b5e
>> Author: Jan Kiszka <jan.kiszka@siemens.com>
>> Date:   Sun Oct 16 19:38:22 2011 +0200
>>
>>     ioapic: Introduce backend/frontend infrastructure for KVM reuse
>>
>> Also, with this
>>
>> commit 063e1bea9b0c79bda48c9e82552c5c6c83d03cf7
>> Author: Jan Kiszka <jan.kiszka@siemens.com>
>> Date:   Sat Oct 15 11:49:47 2011 +0200
>>
>>     kvm: Introduce core services for in-kernel irqchip support
>>
>> the whole thing segfaults at startup:
>>
>> (gdb) ru -monitor stdio -m 1G -netdev type=tap,ifname=tap-kvm1,script=no,downscript=no,id=n -device rtl8139,netdev=n,mac=52:54:00:12:34:57 -drive file=/stage/win/dist/t.raw,if=ide,cache=unsafe -vga std -usbdevice tablet -enable-kvm
>> ...
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x00007ffff5670c7a in ?? () from /lib/x86_64-linux-gnu/libc.so.6
>> (gdb) bt
>> #0  0x00007ffff5670c7a in ?? () from /lib/x86_64-linux-gnu/libc.so.6
>> #1  0x00005555557abb3d in ioapic_init (dev=0x555556849f60)
>>     at /build/kvm/git/hw/ioapic_common.c:92
>> #2  0x00005555556a0a85 in sysbus_device_init (dev=0x555556849f60,
>>     base=0x555555be7200) at /build/kvm/git/hw/sysbus.c:133
>> #3  0x00005555556df670 in qdev_init (dev=0x555556849f60)
>>     at /build/kvm/git/hw/qdev.c:293
>> #4  0x00005555556dfa8a in qdev_init_nofail (dev=0x555556849f60)
>>     at /build/kvm/git/hw/qdev.c:387
>> #5  0x00005555557f9bc2 in ioapic_init (gsi_state=0x55555683ff70)
>>     at /build/kvm/git/hw/pc_piix.c:63
>> #6  0x00005555557f9f76 in pc_init1 (system_memory=0x55555641a1b0,
>>     system_io=0x55555641a2b0, ram_size=1073741824,
>>     boot_device=0x7fffffffea30 "cad", kernel_filename=0x0,
>>     kernel_cmdline=0x55555586fbff "", initrd_filename=0x0, cpu_model=0x0,
>>     pci_enabled=1, kvmclock_enabled=1) at /build/kvm/git/hw/pc_piix.c:166
>> #7  0x00005555557fa425 in pc_init_pci (ram_size=1073741824,
>>     boot_device=0x7fffffffea30 "cad", kernel_filename=0x0,
>>     kernel_cmdline=0x55555586fbff "", initrd_filename=0x0, cpu_model=0x0)
>>     at /build/kvm/git/hw/pc_piix.c:245
>> #8  0x00005555556b99ca in main (argc=16, argv=0x7fffffffeb58,
>>     envp=0x7fffffffebe0) at /build/kvm/git/vl.c:3351
>> (gdb) frame 1
>> #1  0x00005555557abb3d in ioapic_init (dev=0x555556849f60)
>>     at /build/kvm/git/hw/ioapic_common.c:92
>> 92	        if (strcmp(b->name, s->backend_name) == 0) {
>> (gdb) p b->name
>> $1 = 0x55555588588d "QEMU"
>> (gdb) p s->backend_name
>> $2 = 0x0
>> (gdb) _
>>
> 
> How embarrassing. Messed something up, maybe during rebase, and forgot
> to retest non-irqchip mode. Will fix and repost.

Was even worse, a simple -ENOTTESTED case. Pushed an update at the same
location.

Thanks,
Jan


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