linux-kernel - [PATCH v2 06/25] x86/xen: Add ANNOTATE_ENDBR to startup

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Message-Id: <a87bd48b06d11ec4b98122a429e71e489b4e48c3.1650300597.git.jpoimboe@redhat.com>
Date:   Mon, 18 Apr 2022 09:50:25 -0700
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     x86@...nel.org
Cc:     Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org, Miroslav Benes <mbenes@...e.cz>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        xen-devel@...ts.xenproject.org
Subject: [PATCH v2 06/25] x86/xen: Add ANNOTATE_ENDBR to startup_xen()

The startup_xen() kernel entry point is referenced by the ".note.Xen"
section, but is presumably not indirect-branched to.  Add ANNOTATE_ENDBR
to silence future objtool warnings.

Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc: Juergen Gross <jgross@...e.com>
Cc: Stefano Stabellini <sstabellini@...nel.org>
Cc: xen-devel@...ts.xenproject.org
Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
---
 arch/x86/xen/xen-head.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index ac17196e2518..3a2cd93bf059 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -45,6 +45,7 @@ SYM_CODE_END(hypercall_page)
 	__INIT
 SYM_CODE_START(startup_xen)
 	UNWIND_HINT_EMPTY
+	ANNOTATE_NOENDBR
 	cld
 
 	/* Clear .bss */
-- 
2.34.1