powerpc: Add denormalisation exception handling for POWER6/7

[linux-block.git] / arch / powerpc / Kconfig

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 98e513b6270968b4f69736ce42f2e63522899ce1..748ccaa3b4b395236c01d47534394341e73b2be5 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -560,6 +560,14 @@ config SCHED_SMT
          when dealing with POWER5 cpus at a cost of slightly increased
          overhead in some places. If unsure say N here.
 
+config PPC_DENORMALISATION
+       bool "PowerPC denormalisation exception handling"
+       depends on PPC_BOOK3S_64
+       default "n"
+       ---help---
+         Add support for handling denormalisation of single precision
+         values.  Useful for bare metal only.  If unsure say Y here.
+
 config CMDLINE_BOOL
        bool "Default bootloader kernel arguments"