[v6,02/24] powerpc/mm: Define CONFIG_SPF

Message ID 1515777968-867-3-git-send-email-ldufour@linux.vnet.ibm.com
State New
Headers show
Series
  • Speculative page faults
Related show

Commit Message

Laurent Dufour Jan. 12, 2018, 5:25 p.m.
Define CONFIG_SPF 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 <ldufour@linux.vnet.ibm.com>
---
 arch/powerpc/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

Patch

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index d99250d9185d..31be1d69b350 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -1209,6 +1209,10 @@  endif
 config	ARCH_RANDOM
 	def_bool n
 
+config SPF
+	def_bool y
+	depends on PPC_BOOK3S_64 && SMP
+
 source "net/Kconfig"
 
 source "drivers/Kconfig"