Re: [libvirt] [PATCH v2 6/7] qemu: Forbid MSR features with old QEMU

2019-06-20 Thread Ján Tomko
On Thu, Jun 20, 2019 at 12:53:41AM +0200, Jiri Denemark wrote: Without "unavailable-features" CPU property we cannot properly detect whether a specific MSR feature we asked for (either explicitly or implicitly via a CPU model) was disabled by QEMU for some reason. Because this could break migrati

[libvirt] [PATCH v2 6/7] qemu: Forbid MSR features with old QEMU

2019-06-19 Thread Jiri Denemark
Without "unavailable-features" CPU property we cannot properly detect whether a specific MSR feature we asked for (either explicitly or implicitly via a CPU model) was disabled by QEMU for some reason. Because this could break migration, snapshots, and save/restore operaions, it's better to just fo