linux-kernel - [RFC 16/16] arm64: kernel: Annotate non-standard stack frame functions

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Date:   Thu, 16 May 2019 11:36:55 +0100
From:   Raphael Gault <raphael.gault@....com>
To:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     jpoimboe@...hat.com, peterz@...radead.org, catalin.marinas@....com,
        will.deacon@....com, julien.thierry@....com,
        Raphael Gault <raphael.gault@....com>
Subject: [RFC 16/16] arm64: kernel: Annotate non-standard stack frame functions

Annotate assembler functions which are callable but do not
setup a correct stack frame.

Signed-off-by: Raphael Gault <raphael.gault@....com>
---
 arch/arm64/kernel/hyp-stub.S | 2 ++
 arch/arm64/kvm/hyp-init.S    | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S
index 17f325ba831e..ded5a50d95bf 100644
--- a/arch/arm64/kernel/hyp-stub.S
+++ b/arch/arm64/kernel/hyp-stub.S
@@ -53,6 +53,7 @@ ENTRY(__hyp_stub_vectors)
 	ventry	el1_fiq_invalid			// FIQ 32-bit EL1
 	ventry	el1_error_invalid		// Error 32-bit EL1
 ENDPROC(__hyp_stub_vectors)
+asm_stack_frame_non_standard __hyp_stub_vectors
 
 	.align 11
 
@@ -80,6 +81,7 @@ el1_sync:
 9:	mov	x0, xzr
 	eret
 ENDPROC(el1_sync)
+asm_stack_frame_non_standard el1_sync
 
 .macro invalid_vector	label
 \label:
diff --git a/arch/arm64/kvm/hyp-init.S b/arch/arm64/kvm/hyp-init.S
index 4576b86a5579..2ef2e2c51824 100644
--- a/arch/arm64/kvm/hyp-init.S
+++ b/arch/arm64/kvm/hyp-init.S
@@ -129,6 +129,7 @@ CPU_BE(	orr	x4, x4, #SCTLR_ELx_EE)
 	/* Hello, World! */
 	eret
 ENDPROC(__kvm_hyp_init)
+asm_stack_frame_non_standard __kvm_hyp_init
 
 ENTRY(__kvm_handle_stub_hvc)
 	cmp	x0, #HVC_SOFT_RESTART
@@ -170,6 +171,7 @@ reset:
 	eret
 
 ENDPROC(__kvm_handle_stub_hvc)
+asm_stack_frame_non_standard __kvm_handle_stub_hvc
 
 	.ltorg
 
-- 
2.17.1