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[Qemu-devel] Re: Bugs in kvm guest migration
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From: |
Jan Kiszka |
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Subject: |
[Qemu-devel] Re: Bugs in kvm guest migration |
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Date: |
Thu, 03 Dec 2009 20:23:31 +0100 |
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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 |
Jan Kiszka wrote:
> Problem 2
> ---------
> Setup: qemu head with vmstate fixes. kvm-kmod master, 64-bit host & guest.
> Effect: The migration target either locks up or reboots immediately.
> I've nailed this down to 84d0b66c778d881eafca2a5d0d66678211c4e861. Every
> kvm module build before that works, everything including and after
> 26ede77f536d1bb369527a96c7fe7fdc8ba2f890 shows the effect (everything in
> between crashes the host for known reasons). It's still unclear if this
> is an kvm-kmod wrapping issue of the user-space return notifiers. Will
> check once problem #1 is understood.
It is kernel-related, using kvm.git as host kernel makes no difference.
This may now mean that kvm is buggy or that it triggers some msr
save/restore related issues in qemu. Digging even deeper...
Jan