[PATCH v7 03/24] powerpc/mm: Define CONFIG_SPECULATIVE_PAGE_FAULT

[Laurent Dufour]

Define CONFIG_SPECULATIVE_PAGE_FAULT for BOOK3S_64 and SMP. This enables
the Speculative Page Fault handler.

Support is only provide for BOOK3S_64 currently because:
- require CONFIG_PPC_STD_MMU because checks done in
  set_access_flags_filter()
- require BOOK3S because we can't support for book3e_hugetlb_preload()
  called by update_mmu_cache()

Signed-off-by: Laurent Dufour <lduf...@linux.vnet.ibm.com>
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 9d3329811cc1..57c19ee79c00 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -232,6 +232,7 @@ config PPC
        select OLD_SIGACTION                    if PPC32
        select OLD_SIGSUSPEND
        select SPARSE_IRQ
+       select SPECULATIVE_PAGE_FAULT           if PPC_BOOK3S_64 && SMP
        select SYSCTL_EXCEPTION_TRACE
        select VIRT_TO_BUS                      if !PPC64
        #
-- 
2.7.4