[PATCH] powerpc/64s: Fix ps3 build error due to tlbiel_all()

Michael Ellerman mpe at ellerman.id.au
Fri Jan 19 19:55:31 AEDT 2018

The recent changes to TLB handling broke the PS3 build:

  arch/powerpc/include/asm/book3s/64/tlbflush.h:30: undefined reference to `.hash__tlbiel_all'

Fix it by adding an fallback version of tlbiel_all() for non-native
builds. It should never be called, due to checks in callers so it
calls BUG(). We should probably clean it up further but this will
suffice for now.

Fixes: d4748276ae14 ("powerpc/64s: Improve local TLB flush for boot and MCE on POWER9")
Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
 arch/powerpc/include/asm/book3s/64/tlbflush.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush.h b/arch/powerpc/include/asm/book3s/64/tlbflush.h
index 9befb4df235c..0cac17253513 100644
--- a/arch/powerpc/include/asm/book3s/64/tlbflush.h
+++ b/arch/powerpc/include/asm/book3s/64/tlbflush.h
@@ -14,6 +14,7 @@ enum {
 	TLB_INVAL_SCOPE_LPID = 1,	/* invalidate TLBs for current LPID */
 static inline void tlbiel_all(void)
@@ -29,6 +30,9 @@ static inline void tlbiel_all(void)
+static inline void tlbiel_all(void) { BUG(); };
 static inline void tlbiel_all_lpid(bool radix)

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