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* [PATCH v3 01/11] powerpc/8xx: remove remaining unnecessary code in FixupDAR
@ 2015-02-03 11:38 ` Christophe Leroy
  0 siblings, 0 replies; 12+ messages in thread
From: Christophe Leroy @ 2015-02-03 11:38 UTC (permalink / raw)
  To: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
	scottwood
  Cc: linuxppc-dev, linux-kernel

Since commit 33fb845a6f01 ("powerpc/8xx: Don't use MD_TWC for walk"), MD_EPN and
MD_TWC are not writen anymore in FixupDAR so saving r3 has become useless.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

---
v2: no change
v3: no change

 arch/powerpc/kernel/head_8xx.S | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 3d4b8ee..79b8a23 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -532,9 +532,6 @@ DARFixed:/* Return from dcbx instruction bug workaround */
  /* define if you don't want to use self modifying code */
 #define NO_SELF_MODIFYING_CODE
 FixupDAR:/* Entry point for dcbx workaround. */
-#ifdef CONFIG_8xx_CPU6
-	mtspr	SPRN_DAR, r3
-#endif
 	mtspr	SPRN_SPRG_SCRATCH2, r10
 	/* fetch instruction from memory. */
 	mfspr	r10, SPRN_SRR0
@@ -551,9 +548,6 @@ FixupDAR:/* Entry point for dcbx workaround. */
 	/* Extract level 2 index */
 	rlwinm	r11, r11, 32 - (PAGE_SHIFT - 2), 32 - PAGE_SHIFT, 29
 	lwzx	r11, r10, r11	/* Get the pte */
-#ifdef CONFIG_8xx_CPU6
-	mfspr	r3, SPRN_DAR
-#endif
 	/* concat physical page address(r11) and page offset(r10) */
 	mfspr	r10, SPRN_SRR0
 	rlwimi	r11, r10, 0, 32 - PAGE_SHIFT, 31
-- 
2.1.0

^ permalink raw reply related	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2015-04-15  0:51 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-02-03 11:38 [PATCH v3 01/11] powerpc/8xx: remove remaining unnecessary code in FixupDAR Christophe Leroy
2015-02-03 11:38 ` Christophe Leroy
2015-03-26 21:32 ` [v3, " Scott Wood
2015-03-26 21:32   ` Scott Wood
2015-04-12 16:16   ` leroy christophe
2015-04-12 16:16     ` leroy christophe
2015-04-13 20:26     ` Scott Wood
2015-04-13 20:26       ` Scott Wood
2015-04-13 22:19       ` leroy christophe
2015-04-13 22:19         ` leroy christophe
2015-04-15  0:51         ` Scott Wood
2015-04-15  0:51           ` Scott Wood

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