Re: [libvirt] [PATCH] qemu: detect multi-head qxl via more than version check

On Wed, Mar 13, 2013 at 18:48:46 -0600, Eric Blake wrote: > Multi-head QXL support is so useful that distros have started to > backport it to qemu earlier than 1.2. After discussion with > Alon Levy, we determined that the existence of the qxl-vga.surfaces > property is a reliable indicator of whether '-device qxl-vga' works, > or whether we have to stick to the older '-vga qxl'. I'm leaving > in the existing check for QEMU_CAPS_DEVICE_VIDEO_PRIMARY tied to > qemu 1.2 and newer (in case qemu is built without qxl support), So in other words, QEMU_CAPS_DEVICE_VIDEO_PRIMARY will be set iff qemu version is 1.2 or newer or qxl-vga.surfaces exists. That seems fine.

ACK