Re: [Xen-devel] Failure to boot HVM guest with more than 32 VCPUS

["Hao, Xudong" <xudong.hao@xxxxxxxxx>]

> -----Original Message-----
> From: Vitaly Kuznetsov [mailto:vkuznets@xxxxxxxxxx]
> Sent: Thursday, August 13, 2015 4:20 PM
> To: Hao, Xudong <xudong.hao@xxxxxxxxx>
> Cc: xen-devel@xxxxxxxxxxxxx
> Subject: Re: [Xen-devel] Failure to boot HVM guest with more than 32 VCPUS
> 
> "Hao, Xudong" <xudong.hao@xxxxxxxxx> writes:
> 
> >> -----Original Message-----
> >> From: Vitaly Kuznetsov [mailto:vkuznets@xxxxxxxxxx]
> >> Sent: Wednesday, August 12, 2015 5:40 PM
> >> To: Hao, Xudong
> >> Cc: xen-devel@xxxxxxxxxxxxx
> >> Subject: Re: [Xen-devel] Failure to boot HVM guest with more than 32
> >> VCPUS
> >>
> >> "Hao, Xudong" <xudong.hao@xxxxxxxxx> writes:
> >>
> >> > Hi,
> >> >
> >> > In X86_64 platform, we noticed an issue that Xen boot a RHEL6u6 or
> >> > Fedora22 guest, when configure the VCPU more than 32, the guest
> >> > will fail to boot up.
> >>
> >> The issue is well-known for RHEL6.6 (and is fixed in 6.7 and in
> >> 6.6.z) but Fedora22 should boot. The log below is from RHEL6.6, can
> >> you please provide one from Fedora?
> >>
> >
> > Vitaly,
> >
> > Thanks for quick response. Is the fix in guest pv driver?
> 
> The fix is in RHEL6 kernel, prior to it there is no support for vcpu_info 
> outside of
> shared_info and so only 32 vcpus are supported.
> 
> > Will catch Fedora22 log.
> 
> Please do, this is probably a different issue.
> 

Attach the Fedora22 log, a different issue.

> --
>   Vitaly

Attachment: fedora22.log
Description: fedora22.log

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