* [PATCH] powerpc/32: Remove CLR_TOP32
@ 2016-08-05 11:27 Christophe Leroy
2016-09-25 3:00 ` Michael Ellerman
0 siblings, 1 reply; 2+ messages in thread
From: Christophe Leroy @ 2016-08-05 11:27 UTC (permalink / raw)
To: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman, Scott Wood
Cc: linux-kernel, linuxppc-dev
CLR_TOP32() is defined as blank. Last useful instance of CLR_TOP32()
was removed by commit 40ef8cbc6d360 ("powerpc: Get 64-bit configs to
compile with ARCH=powerpc")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/include/asm/ppc_asm.h | 1 -
arch/powerpc/kernel/entry_32.S | 1 -
arch/powerpc/kernel/head_32.S | 3 ---
arch/powerpc/kernel/head_8xx.S | 1 -
4 files changed, 6 deletions(-)
diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index d5d5b5e..bcd891f 100644
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -527,7 +527,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_601)
#endif
#define MTMSRD(r) mtmsr r
#define MTMSR_EERI(reg) mtmsr reg
-#define CLR_TOP32(r)
#endif
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 9899032..83428a2 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -654,7 +654,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_SPE)
#endif /* CONFIG_SMP */
tophys(r0,r4)
- CLR_TOP32(r0)
mtspr SPRN_SPRG_THREAD,r0 /* Update current THREAD phys addr */
lwz r1,KSP(r4) /* Load new stack pointer */
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index dc0488b..a3f821e 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -266,7 +266,6 @@ __secondary_hold_acknowledge:
#define EXCEPTION_PROLOG_2 \
- CLR_TOP32(r11); \
stw r10,_CCR(r11); /* save registers */ \
stw r12,GPR12(r11); \
stw r9,GPR9(r11); \
@@ -862,7 +861,6 @@ __secondary_start:
/* ptr to phys current thread */
tophys(r4,r2)
addi r4,r4,THREAD /* phys address of our thread_struct */
- CLR_TOP32(r4)
mtspr SPRN_SPRG_THREAD,r4
li r3,0
mtspr SPRN_SPRG_RTAS,r3 /* 0 => not in RTAS */
@@ -949,7 +947,6 @@ start_here:
/* ptr to phys current thread */
tophys(r4,r2)
addi r4,r4,THREAD /* init task's THREAD */
- CLR_TOP32(r4)
mtspr SPRN_SPRG_THREAD,r4
li r3,0
mtspr SPRN_SPRG_RTAS,r3 /* 0 => not in RTAS */
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 43ddaae..3a185c5 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -151,7 +151,6 @@ turn_on_mmu:
#define EXCEPTION_PROLOG_2 \
- CLR_TOP32(r11); \
stw r10,_CCR(r11); /* save registers */ \
stw r12,GPR12(r11); \
stw r9,GPR9(r11); \
--
2.1.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: powerpc/32: Remove CLR_TOP32
2016-08-05 11:27 [PATCH] powerpc/32: Remove CLR_TOP32 Christophe Leroy
@ 2016-09-25 3:00 ` Michael Ellerman
0 siblings, 0 replies; 2+ messages in thread
From: Michael Ellerman @ 2016-09-25 3:00 UTC (permalink / raw)
To: Christophe Leroy, Benjamin Herrenschmidt, Paul Mackerras, Scott Wood
Cc: linuxppc-dev, linux-kernel
On Fri, 2016-05-08 at 11:27:59 UTC, Christophe Leroy wrote:
> CLR_TOP32() is defined as blank. Last useful instance of CLR_TOP32()
> was removed by commit 40ef8cbc6d360 ("powerpc: Get 64-bit configs to
> compile with ARCH=powerpc")
>
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/148151a66a74bf43c6acc932a3
cheers
^ permalink raw reply [flat|nested] 2+ messages in thread
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2016-09-25 3:00 ` Michael Ellerman
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