From: david ahern <daahern-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
To: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: soft lockup in kvm_flush_remote_tlbs
Date: Thu, 25 Oct 2007 17:05:00 -0600 [thread overview]
Message-ID: <4721211C.7020701@cisco.com> (raw)
In-Reply-To: <4720E1EB.6020700-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
It appears to be a problem with the kernel proper (ie., not a Red Hat patch). I hit the soft lockup problem with kvm-48 and the 2.6.18.4 kernel which is the base for RHEL5. That suggests a delivery between 2.6.18.4 (November 2006) and 2.6.23.1 fixed it.
david
Avi Kivity wrote:
> david ahern wrote:
>> The issue appears to be with the RHEL5 kernel (host OS is rhel5). I tried your suggestions below -- no effect; still hit the softlockup.
>>
>> I then moved the host to the 2.6.23.1 kernel but with the kvm-48 code base. Surprisingly, I had no issues starting my guest with '-smp 4'.
>>
>>
>
> Well, I regularly start up 4-way Linux guests on 2.6.bleeding.edge. I'd
> like to clear that problem for users on older kernels, though.
>
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prev parent reply other threads:[~2007-10-25 23:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-24 23:00 soft lockup in kvm_flush_remote_tlbs david ahern
[not found] ` <471FCEA6.6000903-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2007-10-24 23:15 ` Laurent Vivier
[not found] ` <471FD204.6040400-6ktuUTfB/bM@public.gmane.org>
2007-10-25 4:26 ` david ahern
2007-10-25 6:47 ` Avi Kivity
[not found] ` <47203BEB.9070509-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-25 13:30 ` david ahern
[not found] ` <47209A77.3090503-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2007-10-25 13:46 ` Avi Kivity
[not found] ` <47209E23.8080808-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-25 14:07 ` david ahern
2007-10-25 18:34 ` david ahern
[not found] ` <4720E19B.20802-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2007-10-25 18:35 ` Avi Kivity
[not found] ` <4720E1EB.6020700-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-25 23:05 ` david ahern [this message]
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