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Re: [Qemu-devel] commit 5b82b70 boot problems
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] commit 5b82b70 boot problems |
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Date: |
Wed, 10 Feb 2016 22:33:49 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 |
On 10/02/2016 20:26, Gabriel L. Somlo wrote:
> Hi Stefan,
>
> After pulling from upstream this morning, my guest VMs were no longer
> able to boot. For instance, running something like
>
> bin/qemu-system-x86_64 -machine q35,accel=kvm -m 2048 -monitor stdio \
> -device ide-drive,bus=ide.2,drive=CD \
> -drive
> id=CD,if=none,snapshot=on,file=Fedora-Live-Workstation-x86_64-22-3.iso
>
> Would just hang with a black screen, or sometimes partially display
> the GRUB boot menu, and never make it any further than that.
>
> After a bisect, I narrowed it down to 5b82b70 ("memory: RCU
> ram_list.dirty_memory[] for safe RAM hotplug"); reverting that
> commit got me back to where my VMs were working fine, but the
> actual content of the changes isn't immediately obvious.
>
> Apologies for the noise in case you're already aware of the problem.
No apologies needed, but indeed a fix is pending on the list (search for
"memory" in today's subjects).
Paolo
> Otherwise, I'd be happy to test and send you debug output.
>
> Please advise.
>
> Thanks much,
> --Gabriel
>
>