On Sun, 11 Dec 2011 11:42:56 +0200, "Michael S. Tsirkin" <[email protected]> wrote: > On Thu, Dec 08, 2011 at 09:09:33PM +1030, Rusty Russell wrote: > > +/* There is no iowrite64. We use two 32-bit ops. */ > > +static void iowrite64(u64 val, const __le64 *addr) > > +{ > > + iowrite32((u32)val, (__le32 *)addr); > > + iowrite32(val >> 32, (__le32 *)addr + 1); > > +} > > + > > Let's put addr_lo/addr_hi in the structure then, > to make the fact this field is not atomic explicit?
Good point, assuming I haven't missed something. Are 64-bit accesses actually unknown in PCI-land? Or is this a limited availability thing? Thanks, Rusty. _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
