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[Qemu-devel] Re: ACPI weirdness with SVN head
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] Re: ACPI weirdness with SVN head |
Date: |
Sun, 08 Feb 2009 13:33:19 +0100 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Erik de Castro Lopo wrote:
> Erik de Castro Lopo wrote:
>
>> Is this a known problem?
>
> More info. If I disable ACPI with -no-acpi the VM boots but
> then chews up far more of the host CPU than previously. The
> only real explanation I can find for this on the guest side
> is a very high number of timer interrupts:
>
> guest > cat /proc/interrupts
> CPU0
> 0: 2575369 XT-PIC-XT timer
> 1: 9 XT-PIC-XT i8042
> 2: 0 XT-PIC-XT cascade
> 4: 536 XT-PIC-XT serial
> 8: 0 XT-PIC-XT rtc0
> 9: 0 XT-PIC-XT virtio0
> 11: 202 XT-PIC-XT virtio1, eth0
> 12: 111 XT-PIC-XT i8042
> 14: 4176 XT-PIC-XT ata_piix
> 15: 3676 XT-PIC-XT ata_piix
> NMI: 0 Non-maskable interrupts
> LOC: 0 Local timer interrupts
> RES: 0 Rescheduling interrupts
> CAL: 0 function call interrupts
> TLB: 0 TLB shootdowns
> TRM: 0 Thermal event interrupts
> THR: 0 Threshold APIC interrupts
> SPU: 0 Spurious interrupts
> ERR: 0
>
> Cheers,
> Erik
I stumbled over the same problem with one of my Linux guests [1], but as
the one that locked up was built without CONFIG_ACPI, I concluded that
this is the problem (it missed that pin1 became 2, just like your guest
does). Have you updated your BIOS image?
Jan
[1] http://comments.gmane.org/gmane.comp.emulators.qemu/37767
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