Re: [libvirt] [PATCH v3 17/28] qemu: Get host CPU model from QEMU on x86_64

Until now host-model CPU mode tried to enable all CPU features supported by the host CPU even if QEMU/KVM did not support them. This caused a number of issues and made host-model quite unreliable. Asking QEMU for the CPU it can provide and the current host makes host-model much more robust. This commit fixes the following bugs: https://bugzilla.redhat.com/show_bug.cgi?id=1018251 https://bugzilla.redhat.com/show_bug.cgi?id=1371617 https://bugzilla.redhat.com/show_bug.cgi?id=1372581 https://bugzilla.redhat.com/show_bug.cgi?id=1404627 https://bugzilla.redhat.com/show_bug.cgi?id=870071 In addition to that, the following bug should be mostly limited to cases when an unsupported feature is explicitly requested: https://bugzilla.redhat.com/show_bug.cgi?id=1335534 Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com&gt; --- Notes: Version 3: - added #include "cpu/cpu_x86.h" removed in an earlier patch - adapted to changes to qemuMonitorCPUModelProperty Version 2: - no change src/qemu/qemu_capabilities.c | 77 ++++++++++++++++++++++ .../domaincapsschemadata/qemu_2.9.0-tcg.x86_64.xml | 33 +++++++++- tests/domaincapsschemadata/qemu_2.9.0.x86_64.xml | 11 +++- 3 files changed, 119 insertions(+), 2 deletions(-)