[ ... ] >> yes because you also need to share the XIVE TIMA and ESB pages mapped >> in xive_native_esb_fault() and xive_native_tima_fault(). > > These pages belong to the xive memory slot right? If that is the case, > they are implicitly shared. The Ultravisor will set them up to be > shared. The guest kernel should not be doing anything. > > We still need some fixes in KVM and Ultravisor to correctly map the > hardware pages to GPA ranges of the xive memory slot. Work is in progress... ok. Since this is already done for KVM, I suppose it's not too hard. the VMA has VM_IO | VM_PFNMAP flags. Otherwise you could still pick up the XIVE ESB and TIMA HW MMIO ranges in OPAL and brutally declare the whole as shared, if that's possible. C.
