On 12/11/2015 07:14 AM, C.L. Martinez wrote: > Hi all, > > What are the differences between pc and q35?? By default, > virt-manager+libvirt setups kvm guest machine as a pc-i440fx-rhel7.1.0. > > [hicheck at ckvm015 ~]$ /usr/libexec/qemu-kvm -machine ? > Supported machines are: > pc RHEL 7.1.0 PC (i440FX + PIIX, 1996) (alias of > pc-i440fx-rhel7.1.0) > pc-i440fx-rhel7.1.0 RHEL 7.1.0 PC (i440FX + PIIX, 1996) (default) > pc-i440fx-rhel7.0.0 RHEL 7.0.0 PC (i440FX + PIIX, 1996) > rhel6.6.0 RHEL 6.6.0 PC > rhel6.5.0 RHEL 6.5.0 PC > rhel6.4.0 RHEL 6.4.0 PC > rhel6.3.0 RHEL 6.3.0 PC > rhel6.2.0 RHEL 6.2.0 PC > rhel6.1.0 RHEL 6.1.0 PC > rhel6.0.0 RHEL 6.0.0 PC > q35 RHEL-7.1.0 PC (Q35 + ICH9, 2009) (alias of > pc-q35-rhel7.1.0) > pc-q35-rhel7.1.0 RHEL-7.1.0 PC (Q35 + ICH9, 2009) > pc-q35-rhel7.0.0 RHEL-7.0.0 PC (Q35 + ICH9, 2009) > none empty machine > > But according to this, q35 is more new virtual hardware. Why?? Ok, found it: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.0_Release_Notes/chap-Red_Hat_Enterprise_Linux-7.0_Release_Notes-Virtualization.html