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Groups > linux.kernel > #1705802
| From | Sebastian Rachuj <rachus@web.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: kvm_intel fails to load on Conroe CPUs running Linux 4.12 |
| Date | 2017-08-07 20:50 +0200 |
| Message-ID | <ubVge-45a-17@gated-at.bofh.it> (permalink) |
| References | (1 earlier) <ubB7P-7pO-15@gated-at.bofh.it> <ubBhw-7tc-29@gated-at.bofh.it> <ubMPD-6vW-7@gated-at.bofh.it> <ubTR7-3eW-9@gated-at.bofh.it> <ubUtP-3uU-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 07.08.2017 19:50, Paolo Bonzini wrote: > On 07/08/2017 19:17, Sebastian Rachuj wrote: >>>> >>>> Thank you for looking into the issue. My cpuinfo is as follows: >>> >>> Looks like Intel was already differentiating virtualization features >>> across SKUs. Please run the attached script as root to see what other >>> things are different (apparently) between non-Xeon and Xeon Conroes. >> >> Here you are, I hope it helps: > > Not much to say, unfortunately. It's pretty much the same capabilities > as a Prescott/Cedar Mill processor, except that it has MSR bitmaps. It > also lacks FlexPriority compared to the Conroe I had checked. > > It's not great that even the revert patch doesn't apply cleanly---this > is *not* necessarily a boring area of the hypervisor... > > Given the rarity of your machine I'm currently leaning towards _not_ > reverting the change. I'll check another non-Xeon Core 2 tomorrow that > is from December 2008 (IIRC). If that one also lacks vNMI, or if I get > other reports, I suppose I will have to reconsider that. That's unfortunate to hear. Just for completeness, I want to mention a thread in the Archlinux forum, I created, where two other people (Sadar and losko) also complained about not working KVM [1]. Additionally, Linux 4.12 has not reached yet reached distributions with a greater amount of users. If supporting these chips is too much of a hassle, I will probably have to buy a new CPU to enjoy KVM support with a current linux kernel. Anyway, thanks again for figuring this out! [1]: https://bbs.archlinux.org/viewtopic.php?id=228645
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kvm_intel fails to load on Conroe CPUs running Linux 4.12 "Sebastian Rachuj" <Rachus@web.de> - 2017-08-05 21:30 +0200
Re: kvm_intel fails to load on Conroe CPUs running Linux 4.12 Paolo Bonzini <pbonzini@redhat.com> - 2017-08-06 23:20 +0200
Re: kvm_intel fails to load on Conroe CPUs running Linux 4.12 Sebastian Rachuj <rachus@web.de> - 2017-08-06 23:30 +0200
Re: kvm_intel fails to load on Conroe CPUs running Linux 4.12 Paolo Bonzini <pbonzini@redhat.com> - 2017-08-07 11:50 +0200
Re: kvm_intel fails to load on Conroe CPUs running Linux 4.12 Nadav Amit <nadav.amit@gmail.com> - 2017-08-07 19:20 +0200
Re: kvm_intel fails to load on Conroe CPUs running Linux 4.12 Sebastian Rachuj <rachus@web.de> - 2017-08-07 19:20 +0200
Re: kvm_intel fails to load on Conroe CPUs running Linux 4.12 Paolo Bonzini <pbonzini@redhat.com> - 2017-08-07 20:00 +0200
Re: kvm_intel fails to load on Conroe CPUs running Linux 4.12 Sebastian Rachuj <rachus@web.de> - 2017-08-07 20:50 +0200
Re: Re: kvm_intel fails to load on Conroe CPUs running Linux 4.12 Niall Walsh <lkml@celtux.org> - 2017-08-08 23:50 +0200
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