From: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx> Date: Mon, 24 Apr 2017 22:37:40 +0200 > Would be really nice to able to have a canonical solution for this issue, > it's been biting us on SPARC for quite a while now due to the fact that > virtual address space has been 52 bits on SPARC for a while now. It's going to break again with things like ADI which encode protection keys in the high bits of the 64-bit virtual address. Reallly, it would be nice if these tags were instead encoded in the low bits of suitably aligned memory allocations but I am sure it's to late to do that now.
