MMIO and gcc re-ordering issue
alan at lxorguk.ukuu.org.uk
Wed May 28 07:46:51 EST 2008
On Tue, 27 May 2008 15:53:28 -0600
Matthew Wilcox <matthew at wil.cx> wrote:
> On Tue, May 27, 2008 at 10:38:22PM +0100, Alan Cox wrote:
> > > re-ordering, even though I doubt it will be visible in practice. So if you
> > > use the "__" versions, you'd better have barriers even on x86!
> > Are we also going to have __ioread*/__iowrite* ?
> Didn't we already define ioread*() to have loose semantics?
The ATA layer doesn't think so.
More information about the Linuxppc-dev