linux-kernel - [PATCH 1/2] microblaze: Separate GP registers from MSR handling

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Date:   Tue, 30 May 2017 09:55:17 +0200
From:   Michal Simek <michal.simek@...inx.com>
To:     linux-kernel@...r.kernel.org, monstr@...str.eu
Cc:     Stefan Asserhall <stefana@...inx.com>,
        Goran Bilski <goran@...inx.com>
Subject: [PATCH 1/2] microblaze: Separate GP registers from MSR handling

Separate general purpose register restoring from MSR handling.

Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 arch/microblaze/kernel/entry.S | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
index ef548510b951..285e8880e274 100644
--- a/arch/microblaze/kernel/entry.S
+++ b/arch/microblaze/kernel/entry.S
@@ -208,9 +208,7 @@ syscall_debug_table:
 	mfs	r11, rmsr;		/* save MSR */			\
 	swi	r11, r1, PT_MSR;
 
-#define RESTORE_REGS \
-	lwi	r11, r1, PT_MSR;					\
-	mts	rmsr , r11;						\
+#define RESTORE_REGS_GP \
 	lwi	r2, r1, PT_R2;	/* restore SDA */		\
 	lwi	r3, r1, PT_R3;					\
 	lwi	r4, r1, PT_R4;					\
@@ -242,6 +240,11 @@ syscall_debug_table:
 	lwi	r30, r1, PT_R30;					\
 	lwi	r31, r1, PT_R31;	/* Restore cur task reg */
 
+#define RESTORE_REGS \
+	lwi	r11, r1, PT_MSR;					\
+	mts	rmsr , r11;						\
+	RESTORE_REGS_GP
+
 #define SAVE_STATE	\
 	swi	r1, r0, TOPHYS(PER_CPU(ENTRY_SP)); /* save stack */	\
 	/* See if already in kernel mode.*/				\
-- 
1.9.1