From: Nikola Ciprich <extmaillist@linuxbox.cz>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm-devel@lists.sourceforge.net, Avi Kivity <avi@qumranet.com>
Subject: Re: paravirt clock stil causing hangs in kvm-65
Date: Tue, 8 Apr 2008 07:59:53 +0200 (CEST) [thread overview]
Message-ID: <alpine.LRH.1.10.0804080751200.28743@linuxbox.linuxbox.cz> (raw)
In-Reply-To: <20080408011833.GA3257@dmt>
On Mon, 7 Apr 2008, Marcelo Tosatti wrote:
> I think the logic to wakeup tasks in HLT is racy. Nothing prevents
> a timer event from being lost if it fires in between guest exit and
> vcpu_block().
>
> Please try the patch below.
>
Hi Marcelo, the problem persists even with patch.
[ 1905.899112] [<ffffffff8020a55b>] ? default_idle+0x3b/0x70
[ 1905.899112] [<ffffffff8020a520>] ? default_idle+0x0/0x70
[ 1905.899112] [<ffffffff8020a60e>] ? cpu_idle+0x7e/0xe0
[ 1905.899112] [<ffffffff80211630>] ? pda_init+0x30/0xb0
As I already said, if I enable ACPI, system does not boot at all (even
with init=/bin/bash) and ends with mentioned trace immediately.
If I disable ACPI, it hangs on "Starting udev", with init=/bin/bash it at
least boots and I can use shell. At least for some time.
Funny thing is, that If I then use poweroff, the system shuts down, ends with "System
halted." message, but everything still seems to be working, shell, etc...
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next prev parent reply other threads:[~2008-04-08 5:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-07 11:53 paravirt clock stil causing hangs in kvm-65 Nikola Ciprich
2008-04-07 21:34 ` Marcelo Tosatti
2008-04-08 1:18 ` Marcelo Tosatti
2008-04-08 5:59 ` Nikola Ciprich [this message]
2008-04-19 15:29 ` Marcelo Tosatti
2008-04-19 16:22 ` Glauber Costa
2008-04-19 16:49 ` Marcelo Tosatti
2008-04-21 7:15 ` Gerd Hoffmann
2008-04-21 8:33 ` [ RfC / patch ] kvmclock fixes Gerd Hoffmann
2008-04-21 9:57 ` Jeremy Fitzhardinge
2008-04-21 13:01 ` Gerd Hoffmann
2008-04-21 13:38 ` Jeremy Fitzhardinge
2008-04-24 13:20 ` paravirt clock stil causing hangs in kvm-65 Glauber Costa
2008-04-26 14:24 ` extmaillist
2008-04-19 16:29 ` Marcelo Tosatti
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