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From: sxwjean@me.com
To: linuxppc-dev@lists.ozlabs.org
Cc: oleg@redhat.com, mpe@ellerman.id.au, benh@kernel.crashing.org,
	paulus@samba.org, ravi.bangoria@linux.ibm.com,
	christophe.leroy@csgroup.eu, npiggin@gmail.com,
	aneesh.kumar@linux.ibm.com, sandipan@linux.ibm.com,
	efremov@linux.com, peterx@redhat.com, akpm@linux-foundation.org,
	linux-kernel@vger.kernel.org, Xiongwei Song <sxwjean@gmail.com>
Subject: [RFC PATCH 2/4] powerpc/64e: Get esr offset with _ESR macro
Date: Mon, 26 Jul 2021 22:30:51 +0800	[thread overview]
Message-ID: <20210726143053.532839-2-sxwjean@me.com> (raw)
In-Reply-To: <20210726143053.532839-1-sxwjean@me.com>

From: Xiongwei Song <sxwjean@gmail.com>

Use _ESR to get the offset of esr register in pr_regs for 64e cpus.

Signed-off-by: Xiongwei Song <sxwjean@gmail.com>
---
 arch/powerpc/kernel/asm-offsets.c    |  2 +-
 arch/powerpc/kernel/exceptions-64e.S | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index a47eefa09bcb..f4ebc435fd78 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -287,6 +287,7 @@ int main(void)
 	STACK_PT_REGS_OFFSET(_XER, xer);
 	STACK_PT_REGS_OFFSET(_DAR, dar);
 	STACK_PT_REGS_OFFSET(_DSISR, dsisr);
+	STACK_PT_REGS_OFFSET(_ESR, esr);
 	STACK_PT_REGS_OFFSET(ORIG_GPR3, orig_gpr3);
 	STACK_PT_REGS_OFFSET(RESULT, result);
 	STACK_PT_REGS_OFFSET(_TRAP, trap);
@@ -298,7 +299,6 @@ int main(void)
 	 * we use them to hold SRR0 and SRR1.
 	 */
 	STACK_PT_REGS_OFFSET(_DEAR, dar);
-	STACK_PT_REGS_OFFSET(_ESR, dsisr);
 #else /* CONFIG_PPC64 */
 	STACK_PT_REGS_OFFSET(SOFTE, softe);
 	STACK_PT_REGS_OFFSET(_PPR, ppr);
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 1401787b0b93..bf8c4c2f98ea 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -546,7 +546,7 @@ __end_interrupts:
 	mfspr	r14,SPRN_DEAR
 	mfspr	r15,SPRN_ESR
 	std	r14,_DAR(r1)
-	std	r15,_DSISR(r1)
+	std	r15,_ESR(r1)
 	ld	r14,PACA_EXGEN+EX_R14(r13)
 	ld	r15,PACA_EXGEN+EX_R15(r13)
 	EXCEPTION_COMMON(0x300)
@@ -559,7 +559,7 @@ __end_interrupts:
 	li	r15,0
 	mr	r14,r10
 	std	r14,_DAR(r1)
-	std	r15,_DSISR(r1)
+	std	r15,_ESR(r1)
 	ld	r14,PACA_EXGEN+EX_R14(r13)
 	ld	r15,PACA_EXGEN+EX_R15(r13)
 	EXCEPTION_COMMON(0x400)
@@ -576,7 +576,7 @@ __end_interrupts:
 	mfspr	r14,SPRN_DEAR
 	mfspr	r15,SPRN_ESR
 	std	r14,_DAR(r1)
-	std	r15,_DSISR(r1)
+	std	r15,_ESR(r1)
 	ld	r14,PACA_EXGEN+EX_R14(r13)
 	ld	r15,PACA_EXGEN+EX_R15(r13)
 	EXCEPTION_COMMON(0x600)
@@ -587,7 +587,7 @@ __end_interrupts:
 	NORMAL_EXCEPTION_PROLOG(0x700, BOOKE_INTERRUPT_PROGRAM,
 				PROLOG_ADDITION_1REG)
 	mfspr	r14,SPRN_ESR
-	std	r14,_DSISR(r1)
+	std	r14,_ESR(r1)
 	ld	r14,PACA_EXGEN+EX_R14(r13)
 	EXCEPTION_COMMON(0x700)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
@@ -1058,7 +1058,7 @@ bad_stack_book3e:
 	mfspr	r10,SPRN_DEAR
 	mfspr	r11,SPRN_ESR
 	std	r10,_DAR(r1)
-	std	r11,_DSISR(r1)
+	std	r11,_ESR(r1)
 	std	r0,GPR0(r1);		/* save r0 in stackframe */	    \
 	std	r2,GPR2(r1);		/* save r2 in stackframe */	    \
 	SAVE_4GPRS(3, r1);		/* save r3 - r6 in stackframe */    \
-- 
2.30.2


  reply	other threads:[~2021-07-26 14:31 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-26 14:30 [RFC PATCH 1/4] powerpc: Optimize register usage for esr register sxwjean
2021-07-26 14:30 ` sxwjean [this message]
2021-07-26 14:30 ` [RFC PATCH 3/4] powerpc: Optimize register usage for dear register sxwjean
2021-08-05 10:09   ` Christophe Leroy
2021-08-06  3:16     ` Xiongwei Song
2021-07-26 14:30 ` [RFC PATCH 4/4] powerpc/64e: Get dear offset with _DEAR macro sxwjean
2021-08-05 10:06 ` [RFC PATCH 1/4] powerpc: Optimize register usage for esr register Christophe Leroy
2021-08-06  3:16   ` Xiongwei Song
2021-08-06  7:32     ` Christophe Leroy
2021-08-06 13:22       ` Xiongwei Song
2021-08-06  6:53 ` Michael Ellerman
2021-08-06 13:14   ` Xiongwei Song
2021-08-06 14:26   ` Segher Boessenkool

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