This series is heavily derived from the PAT patchset by Eric Biederman and Andi Kleen. http://www.firstfloor.org/pub/ak/x86_64/pat/
This patchset is a followup of "PAT support for X86_64" http://www.ussg.iu.edu/hypermail/linux/kernel/0712.1/2268.html Things changed from the above (Dec 13 2007) version: * PAT mappings now used are - (0,WB) (1,WT) (2,WC) (3,UC). * Covers both i386 and x86_64. * Resolve the /sysfs issue by exporting wc and uc interfaces. * Piggyback PAT initialization on existing MTRR initialization as they have same setup rules. * Avoid early table allocation problem for x86_64 by doing the reserved region pruning later in the boot. Handle both memory identity mapping and kernel test mapping. * Handle fork() and /dev/mem mapping and unmapping cases. Patchset is against Ingo's x86 branch from 2 days ago. Will need some merging effort with Andi's CPA changes and few other changes like pgtable.h unification. Not mapping reserved region in identity map is a sort of big change that can potentially have side-effects on drivers (especially on x86_64), that assume entire address range is mapped in identity map and use __va to access reserved regions instead of ioremap/early_ioremap. We have changed few such common cases, but there can be more in /drivers land. Signed-off-by: Venkatesh Pallipadi <[EMAIL PROTECTED]> Signed-off-by: Suresh Siddha <[EMAIL PROTECTED]> -- -- 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/