On Tue, May 10, 2016 at 11:01:17PM -0600, Jim Fehlig wrote:
Commit 6879be48 moved adding of an implicit video device after XML parsing. As a result, libxlDomainDeviceDefPostParse() is no longer called to set the default vram when adding an implicit device. Commit 6879be48 assumes virDomainVideoDefaultRAM() will set the default vram, but it returns 0 if the domain virtType is VIR_DOMAIN_VIRT_XEN.
I think it would be nicer if PostParse would add a proper device with vram set correctly. I have proposed a series that fills (v)ram in post-parse even for implicit devices, would that fix the problem? cover.1462963982.git.jtomko@redhat.com https://www.redhat.com/archives/libvir-list/2016-May/msg00728.html Jan
Attempting to start an HVM domain with vram=0 results in
error: unsupported configuration: videoram must be at least 4MB for CIRRUS
The default vram setting for Xen HVM domains depends on the device model used (qemu-xen vs qemu-traditional), hence setting the default is deferred to libxlDomainDeviceDefPostParse().
This patch addresses the problem during creation of the video device. If vram is 0, it is assumed unset and the default (depending on qemu-xen vs qemu-traditional) is applied.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1334557 Signed-off-by: Jim Fehlig <jfehlig@suse.com> --- src/libxl/libxl_conf.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+)