mm: speedup mremap on 1GB or larger regions

[linux-2.6-microblaze.git] / arch / Kconfig

diff --git a/arch/Kconfig b/arch/Kconfig
index 4f654c1..54a240b 100644 (file)
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -648,6 +648,13 @@ config HAVE_IRQ_TIME_ACCOUNTING
          Archs need to ensure they use a high enough resolution clock to
          support irq time accounting and then call enable_sched_clock_irqtime().
 
+config HAVE_MOVE_PUD
+       bool
+       help
+         Architectures that select this are able to move page tables at the
+         PUD level. If there are only 3 page table levels, the move effectively
+         happens at the PGD level.
+
 config HAVE_MOVE_PMD
        bool
        help