[PATCH 5/7] powerpc/8xx: Do not allow Pinned TLBs with STRICT_KERNEL_RWX or DEBUG_PAGEALLOC

Christophe Leroy christophe.leroy at c-s.fr
Wed Jul 12 20:08:53 AEST 2017


Pinning TLBs bypasses STRICT_KERNEL_RWX or DEBUG_PAGEALLOC protections
so it should only be allowed when those are not selected

Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>
---
 arch/powerpc/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index d09b259d3621..28608275d7c0 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -1165,7 +1165,8 @@ config CONSISTENT_SIZE
 
 config PIN_TLB
 	bool "Pinned Kernel TLBs (860 ONLY)"
-	depends on ADVANCED_OPTIONS && 8xx
+	depends on ADVANCED_OPTIONS && PPC_8xx && \
+		   !DEBUG_PAGEALLOC && !STRICT_KERNEL_RWX
 
 config PIN_TLB_DATA
 	bool "Pinned TLB for DATA"
-- 
2.12.0



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