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Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models |
Date: |
Wed, 24 Jun 2015 18:00:33 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
On 24/06/2015 17:58, Eduardo Habkost wrote:
> > 3) regarding "enforce", there are indeed some cases where it would break:
> >
> > - Haswell/Broadwell CPU model after TSX removal
> >
> > - qemu64 with KVM
> >
> > - pretty much everything including qemu64 with TCG
>
> - Everything involving KVM CPUID features, that change depending on the
> kernel version.
>
> - Intel CPU models that had VMX enabled in older machine-types,
> and may or may not have VMX enabled depending on kernel VMX nesting
> configuration.
>
> > So libvirt here could allow _now_ the user to specify enforce, either
> > via XML or via qemu.conf (or via XML + a default specified via qemu.conf).
>
> More precisely, libvirt would emulate "enforce" mode by checking the
> "filtered-features", because "enforce" error messages are not
> machine-friendly.
Even better, because it would let libvirt special-case stuff like TSX,
VMX and SVM.
Paolo
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, (continued)
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Michael S. Tsirkin, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Eduardo Habkost, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Michael S. Tsirkin, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Andreas Färber, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Michael S. Tsirkin, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Andreas Färber, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Paolo Bonzini, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Peter Maydell, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Paolo Bonzini, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Eduardo Habkost, 2015/06/24
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models,
Paolo Bonzini <=
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Andreas Färber, 2015/06/23
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Daniel P. Berrange, 2015/06/23
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Andreas Färber, 2015/06/23
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Eduardo Habkost, 2015/06/23
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Daniel P. Berrange, 2015/06/23
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Eduardo Habkost, 2015/06/23
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Andreas Färber, 2015/06/23
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Daniel P. Berrange, 2015/06/23
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Michael S. Tsirkin, 2015/06/23
- Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models, Daniel P. Berrange, 2015/06/23