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Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty
From: |
Andreas Färber |
Subject: |
Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty |
Date: |
Thu, 29 Dec 2011 14:39:22 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:9.0) Gecko/20111220 Thunderbird/9.0 |
Am 29.12.2011 14:27, schrieb Amit Shah:
> On (Thu) 29 Dec 2011 [13:47:43], Christian Borntraeger wrote:
>> From: Christian Borntraeger <address@hidden>
>>
>> when I tried qemu with -virtio-console pty the guest hangs and attaching on
>> /dev/pts/<x> does
>> not return anything if the attachement is too late.
"attachment", while you're at it.
Andreas
>> Turns out that the console is already throttled and the guest is heavily
>> spinning but get_buf
>> never returns the buffer. There seems to be no way for the console to
>> unthrottle the port.
>
> It doesn't really get throttled, since the throttling
> enabling/disabling isn't yet done in QEMU. What happens is that the
> chardev buffer gets filled up and qemu_chr_fe_write() doesn't return
> -- send_all() keeps spinning.
>
> I'll adjust the commit log message and submit.
>
> Thanks.
>
> Amit
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- [Qemu-devel] [RFC] virtio-console fails on unconnected pty, Christian Borntraeger, 2011/12/15
- Re: [Qemu-devel] [RFC] virtio-console fails on unconnected pty, Amit Shah, 2011/12/16
- [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Christian Borntraeger, 2011/12/29
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Amit Shah, 2011/12/29
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty,
Andreas Färber <=
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Amit Shah, 2011/12/29
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Christian Borntraeger, 2011/12/29
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Christian Borntraeger, 2011/12/29
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Amit Shah, 2011/12/29
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Christian Borntraeger, 2011/12/29
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Amit Shah, 2011/12/29
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Christian Borntraeger, 2011/12/29
- Re: [Qemu-devel] [PATCHv2] Fix virtio-console failure on unconnected pty, Amit Shah, 2011/12/29