(Illustration by Gaich Muramatsu)
Michael Tautschnig <michael.tautschnig_at_zt-consulting.com> writes: > As I took a closer look into the sources, I got pretty sure, that my > problem lies in the different pointer-sizes when having a 32-bit userland > and a 64-bit kernel. Could somebody confirm that? That would cause trouble, yes. > The structs ViceIoctl and PioctlData both contain pointers - but what > would be a good solution for that problem? If I follow (which I'm not sure), you are saying that structures which are passed by reference across the user/kernel boundary contain pointers to other structures? This is a real problem, because with a 64-bit venus we can't assume the high 4 bytes are zero. A kludge would be to define then as uint32_t, and cast back to pointers in the kernel. With a 32-bit venus, you'll get the right answer since there of course are no addresses >32 bits. -- Greg Troxel <gdt_at_ir.bbn.com>Received on 2004-08-04 10:00:05