linux-kernel - [PATCH 5/5] powerpc/mm: The 8xx doesn't call do_page

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Date:   Wed, 19 Apr 2017 14:56:32 +0200 (CEST)
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Scott Wood <oss@...error.net>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH 5/5] powerpc/mm: The 8xx doesn't call do_page_fault() for
 breakpoints

The 8xx has a dedicated exception for breakpoints, that directly
calls do_break()

Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
 arch/powerpc/mm/fault.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 8d1639eee3af..400f2d0d42f8 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -251,7 +251,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
 	}
 
 #if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE) || \
-			     defined(CONFIG_PPC_BOOK3S_64))
+      defined(CONFIG_PPC_BOOK3S_64) || defined(CONFIG_PPC_8xx))
   	if (error_code & DSISR_DABRMATCH) {
 		/* breakpoint match */
 		do_break(regs, address, error_code);
-- 
2.12.0