On Thu, Nov 2, 2017 at 8:06 PM, Joao Martins <joao.m.mart...@oracle.com> wrote:
> The function libxl__device_generic_add will have an additional > argument whereby it adds a second set of entries visible to the > backend only. These entries will then be used for devices > thus overriding backend maximum feature set with this user-defined ones. > > libxl_device_disk.backend_features are a key value store storing: > <feature-name> = <feature-value> > > xl|libxl are stateless with respect to feature names therefore is up to the > admin to carefully select those. If backend isn't supported therefore the > features won't be overwritten. > > Signed-off-by: Joao Martins <joao.m.mart...@oracle.com> > --- > tools/libxl/libxl.h | 8 ++++++++ > tools/libxl/libxl_console.c | 5 +++-- > tools/libxl/libxl_device.c | 37 +++++++++++++++++++++++++++++++++---- > tools/libxl/libxl_disk.c | 17 +++++++++++++++-- > tools/libxl/libxl_internal.h | 4 +++- > tools/libxl/libxl_pci.c | 2 +- > tools/libxl/libxl_types.idl | 1 + > tools/libxl/libxl_usb.c | 2 +- > 8 files changed, 65 insertions(+), 11 deletions(-) > > No need to extend libxl__device_generic_add with additional parameter (brents). You can add nested entry in libxl__set_xenstore_<device> as following: flexarray_append(back, "require/feature-persistent", "0"); -- Best Regards, Oleksandr Grytsov.
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