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From: Paolo Bonzini <pbonzini@redhat.com>
To: Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@amacapital.net>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Cole Robinson <crobinso@redhat.com>,
	Xen Devel <xen-devel@lists.xensource.com>,
	kvm list <kvm@vger.kernel.org>,
	M A Young <m.a.young@durham.ac.uk>,
	xen <xen@lists.fedoraproject.org>
Subject: Re: rdmsr_safe in Linux PV (under Xen) gets an #GP:Re: [Fedora-xen] Running fedora xen on top of KVM?
Date: Fri, 18 Sep 2015 17:27:55 +0200	[thread overview]
Message-ID: <55FC2D7B.90108@redhat.com> (raw)
In-Reply-To: <20150918135411.GA25593@nazgul.tnic>



On 18/09/2015 15:54, Borislav Petkov wrote:
> On Thu, Sep 17, 2015 at 01:23:31PM -0700, Andy Lutomirski wrote:
>> > Cc: Borislav.  Is TSEG guaranteed to exist?  Can we defer that until
> Why not? It is the tseg base address.
> 
> I think this is kvm injecting a #GP as it is not ignoring this MSR.
> Presumably modprobing kvm with "ignore_msrs=1" or so should hide the
> issue IIUC...

We should return 0 for the tseg MSRs.  KVM always handles them in the
northbridge emulation code, like Intel chipsets do.  Will send a patch.

Paolo

      parent reply	other threads:[~2015-09-18 15:28 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <55F87984.7030903@redhat.com>
     [not found] ` <alpine.DEB.2.00.1509152223140.16001@procyon.dur.ac.uk>
     [not found]   ` <55F9C792.8070205@redhat.com>
     [not found]     ` <alpine.DEB.2.00.1509162056260.3899@procyon.dur.ac.uk>
     [not found]       ` <55F9D95F.9040401@redhat.com>
     [not found]         ` <20150916210814.GA4643@l.oracle.com>
     [not found]           ` <55F9EF87.7030407@redhat.com>
2015-09-17 20:10             ` [Fedora-xen] rdmsr_safe in Linux PV (under Xen) gets an #GP:Re: Running fedora xen on top of KVM? Konrad Rzeszutek Wilk
2015-09-17 20:23               ` rdmsr_safe in Linux PV (under Xen) gets an #GP:Re: [Fedora-xen] " Andy Lutomirski
2015-09-17 21:29                 ` Andrew Cooper
2015-09-18 13:54                 ` Borislav Petkov
2015-09-18 15:20                   ` Andy Lutomirski
2015-09-18 19:04                     ` Borislav Petkov
2015-09-18 19:15                       ` Cole Robinson
2015-09-21  4:49                       ` Andy Lutomirski
2015-09-22 18:23                         ` [Fedora-xen] rdmsr_safe in Linux PV (under Xen) gets an #GP:Re: " Konrad Rzeszutek Wilk
2015-09-22 18:32                           ` rdmsr_safe in Linux PV (under Xen) gets an #GP:Re: [Fedora-xen] " Andy Lutomirski
2015-09-18 15:27                   ` Paolo Bonzini [this message]

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