Bjorn Helgaas <bjorn.helgaas@xxxxxx> writes: > @@ -138,14 +128,20 @@ > > ioremap() > > - This returns a kernel identity mapping for use inside the > - kernel. > + This returns a mapping for use inside the kernel. > > If the region is in kern_memmap, we should use the attribute > - specified there. Otherwise, if the EFI memory map reports that > - the entire granule supports WB, we should use that (granules > - that are partially reserved or occupied by firmware do not appear > - in kern_memmap). Otherwise, we should use a UC mapping. > + specified there. > + > + If the EFI memory map reports that the entire granule supports > + WB, we should use that (granules that are partially reserved > + or occupied by firmware do not appear in kern_memmap). > + > + If the granule contains non-WB memory, but we can cover the > + region safely with kernel page table mappings, we can use > + ioremap_page_range() as most other architectures do. > + > + Failing all of the above, we have to all back to a UC mapping. s/all back/fall back/ Andreas. -- Andreas Schwab, SuSE Labs, schwab@xxxxxxx SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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