On Friday, June 1, 2007 2:14:17 Andi Kleen wrote: > Jesse Barnes <[EMAIL PROTECTED]> writes: > > (or we get proper PAT support, which I think would make this problem > > go away as well). > > No it won't. If the basic MTRRs for memory are wrong just having PAT > support in drivers (which already exist in a limited form already, just for > UC only) won't change anything.
No obviously just using PAT for drivers wouldn't help, I was thinking more of having one PAT type be WB memory, and using it by default for most PTEs covering normal memory. If that's not possible, then it seems sensible to try to fix this MTRR problem in a better way, either with something like the patch I posted earlier or a more advanced MTRR remapper that runs at early boot. Depending on platform requirements though, that could get complicated pretty fast... Jesse - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
