On Tue, 2015-05-19 at 15:23 +0200, Borislav Petkov wrote: > On Tue, May 19, 2015 at 01:44:37PM +0200, Borislav Petkov wrote: > > > Try with a smaller page size. > > > > > > The callers, pud_set_huge() and pmd_set_huge(), check if the given range > > > is safe with MTRRs for creating a huge page mapping. If not, they fail > > > the request, which leads their callers, ioremap_pud_range() and > > > ioremap_pmd_range(), to retry with a smaller page size, i.e. 1GB -> 2MB > > > -> 4KB. 4KB may not have overlap with MTRRs (hence no checking is > > > necessary), which will succeed as before. > > Scratch that, I think I have it now. And I even have a good feeling > about it :-) Looks good. Thanks for the update! -Toshi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>