On Thu, Sep 09, 2021 at 12:25:12PM +0100, Daniel P. Berrangé wrote:
SeaBIOS >= 1.11 / QEMU >= 2.11 no longer requires the 'sga' device for serial console output from the BIOS. It can be done directly with graphics=off machine option.
This appears to be live migration compatible, despite changing the number of option ROMS loaded, though I need a little more testing to fully confirm this.
Daniel P. Berrangé (4): qemu: prevent use of <bios useserial='yes'> on non-x86 arches qemu: tweak error message to be more general purpose qemu: switch to use -M graphics=off instead of -device sga qemu: stop probing for '-device sga' support
src/qemu/qemu_capabilities.c | 3 +-- src/qemu/qemu_capabilities.h | 2 +- src/qemu/qemu_command.c | 25 ++++++++----------- src/qemu/qemu_validate.c | 15 ++++++++--- .../caps_2.11.0.x86_64.xml | 1 - .../caps_2.12.0.x86_64.xml | 1 - .../caps_3.0.0.x86_64.xml | 1 - .../caps_3.1.0.x86_64.xml | 1 - .../caps_4.0.0.x86_64.xml | 1 - .../caps_4.1.0.x86_64.xml | 1 - .../caps_4.2.0.x86_64.xml | 1 - .../caps_5.0.0.x86_64.xml | 1 - .../caps_5.1.0.x86_64.xml | 1 - .../caps_5.2.0.x86_64.xml | 1 - .../caps_6.0.0.x86_64.xml | 1 - .../caps_6.1.0.x86_64.xml | 1 - tests/qemuxml2argvdata/bios.args | 3 +-- tests/qemuxml2argvtest.c | 3 +-- 18 files changed, 25 insertions(+), 38 deletions(-)
I didn't test it, but the changes look reasonable so: Reviewed-by: Richard W.M. Jones <rjones@redhat.com> Equivalent (non-)change to libguestfs is: https://github.com/libguestfs/libguestfs/commit/e14ff937422115e23094ca4cce80... Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top