Hi all, On Wed, 6 May 2009 11:00:34 -0700 Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> wrote: > > On Wed, 6 May 2009 11:41:12 -0600 > "Wilcox, Matthew R" <matthew.r.wilcox@xxxxxxxxx> wrote: > > > I think PowerPC's IO_SPACE_LIMIT is defined incorrectly. > > > > On 64-bit, it's currently set to 0xffff'ffff'ffff'ffff. This can't > > possibly work, there's no way for the PCI bus to transmit 64-bit > > IO-port addresses. It should probably be defined to > > > > 0xffffffffU > > But yeah on a bus level it clearly needs to be limited to 32 bits, but > ISTR that some arches use the high resource bits for tracking I/O > resources on a systemwide basis (too lazy to look atm). > > So either we need to split the definition between bus & resource usage, > or add a cast here... I am still getting the original warning. For reference, the following architectures will probably have the same: ia64: 0xffffffffffffff powerpc: ~(0UL) sparc64: 0xffffffffffffffffUL -- Cheers, Stephen Rothwell sfr@xxxxxxxxxxxxxxxx http://www.canb.auug.org.au/~sfr/
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