On Thu, Feb 13, 2020 at 02:59:37AM +0000, Liu, Yi L wrote: > > - Remove the vtd_pasid_as check right below because it's not needed. > > > > > > > > > > > > > + if (vtd_pasid_as && > > ^^^^^^^^^^^^ > > yes, it is. In current series vtd_add_find_pasid_as() doesn’t check the > result of vtd_pasid_as mem allocation, so no need to check vtd_pasid_as > here either. However, it might be better to check the allocation result > or it will result in issue if allocation failed. What's your preference > here? That should not be needed, because IIRC g_malloc0() will directly coredump if allocation fails. Even if not, it'll coredump in vtd_add_find_pasid_as() soon when accessing the NULL pointer. -- Peter Xu