diff mbox series

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

Message ID 1517935810-31177-4-git-send-email-ldufour@linux.vnet.ibm.com (mailing list archive)
State Superseded
Headers show
Series Speculative page faults | expand

Commit Message

Laurent Dufour Feb. 6, 2018, 4:49 p.m. UTC 
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 <ldufour@linux.vnet.ibm.com>
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

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
 	#