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[10/14] arm64: entry: consolidate EL1 exception returns

Message ID 20210510155621.52811-11-mark.rutland@arm.com (mailing list archive)
State New, archived
Headers show
Series arm64: entry: migrate more code to C | expand

Commit Message

Mark Rutland May 10, 2021, 3:56 p.m. UTC 
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@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Will Deacon <will@kernel.org>
---
 arch/arm64/kernel/entry.S | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index be8e596af75a..9b662d4c09d8 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -618,7 +618,7 @@  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
@@ -626,7 +626,7 @@  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
@@ -634,7 +634,7 @@  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
@@ -642,9 +642,13 @@  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.
  */