On Mon, Aug 24, 2020 at 08:26:55AM -0600, Jim Fehlig wrote: > By default Xen only allows guests to write "known safe" values into PCI > configuration space, yet many devices require writes to other areas of > the configuration space in order to operate properly. To allow writing > any values Xen supports the 'permissive' setting, see xl.cfg(5) man page. > > This change models Xen's permissive setting by adding a writeFiltering > attribute on the <source> element of a PCI hostdev. When writeFiltering > is set to 'no', the Xen permissive setting will be enabled and guests > will be able to write any values into the device's configuration space. > The permissive setting remains disabled in the absense of the > writeFiltering attribute, of if it is explicitly set to 'yes'. > > Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx> > Signed-off-by: Simon Gaiser <simon@xxxxxxxxxxxxxxxxxxxxxx> > Signed-off-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx> > --- > docs/formatdomain.rst | 7 ++++++- > docs/schemas/domaincommon.rng | 5 +++++ > src/conf/domain_conf.c | 14 ++++++++++++++ > src/conf/domain_conf.h | 1 + > src/libxl/libxl_conf.c | 1 + > src/qemu/qemu_validate.c | 7 +++++++ > tests/libxlxml2domconfigdata/moredevs-hvm.json | 6 ++++++ > tests/libxlxml2domconfigdata/moredevs-hvm.xml | 5 +++++ > 8 files changed, 45 insertions(+), 1 deletion(-) Reviewed-by: Daniel P. Berrangé <berrange@xxxxxxxxxx> Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
