linux-kernel - [RFC 12/16] arm64: kvm: Annotate non-standard stack frame functions

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Message-Id: <20190516103655.5509-13-raphael.gault@arm.com>
Date:   Thu, 16 May 2019 11:36:51 +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 12/16] arm64: kvm: Annotate non-standard stack frame functions

Both __guest_entry and __guest_exit functions do not setup
a correct stack frame. Because they can be considered as callable
functions, even if they are particular cases, we chose to silence
the warnings given by objtool by annotating them as non-standard.

Signed-off-by: Raphael Gault <raphael.gault@....com>
---
 arch/arm64/kvm/hyp/entry.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kvm/hyp/entry.S b/arch/arm64/kvm/hyp/entry.S
index 675fdc186e3b..a7b6d4ef35da 100644
--- a/arch/arm64/kvm/hyp/entry.S
+++ b/arch/arm64/kvm/hyp/entry.S
@@ -85,6 +85,7 @@ ENTRY(__guest_enter)
 	eret
 	sb
 ENDPROC(__guest_enter)
+asm_stack_frame_non_standard __guest_enter
 
 ENTRY(__guest_exit)
 	// x0: return code
@@ -167,3 +168,4 @@ abort_guest_exit_end:
 	orr	x0, x0, x5
 1:	ret
 ENDPROC(__guest_exit)
+asm_stack_frame_non_standard __guest_exit
-- 
2.17.1