[PATCH v3 10/20] arm64: entry: consolidate EL1 exception returns

[Mark Rutland]

Following the example of ret_to_user, let's consolidate all the EL1
return paths with a ret_to_kernel helper, rather than each entry point
having its own copy of the return code.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland at arm.com>
Reviewed-by: Joey Gouly <joey.gouly at arm.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: James Morse <james.morse at arm.com>
Cc: Marc Zyngier <maz at kernel.org>
Cc: Will Deacon <will at kernel.org>
---
 arch/arm64/kernel/entry.S | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index dd5319ade2db..cab4c284c106 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -612,7 +612,7 @@ SYM_CODE_START_LOCAL_NOALIGN(el1_sync)
 	kernel_entry 1
 	mov	x0, sp
 	bl	el1_sync_handler
-	kernel_exit 1
+	b	ret_to_kernel
 SYM_CODE_END(el1_sync)
 
 	.align	6
@@ -620,7 +620,7 @@ SYM_CODE_START_LOCAL_NOALIGN(el1_irq)
 	kernel_entry 1
 	mov	x0, sp
 	bl	el1_irq_handler
-	kernel_exit 1
+	b	ret_to_kernel
 SYM_CODE_END(el1_irq)
 
 	.align 6
@@ -628,7 +628,7 @@ SYM_CODE_START_LOCAL_NOALIGN(el1_fiq)
 	kernel_entry 1
 	mov	x0, sp
 	bl	el1_fiq_handler
-	kernel_exit 1
+	b	ret_to_kernel
 SYM_CODE_END(el1_fiq)
 
 	.align 6
@@ -636,9 +636,13 @@ SYM_CODE_START_LOCAL_NOALIGN(el1_error)
 	kernel_entry 1
 	mov	x0, sp
 	bl	el1_error_handler
-	kernel_exit 1
+	b	ret_to_kernel
 SYM_CODE_END(el1_error)
 
+SYM_CODE_START_LOCAL(ret_to_kernel)
+	kernel_exit 1
+SYM_CODE_END(ret_to_kernel)
+
 /*
  * EL0 mode handlers.
  */
-- 
2.11.0