linux-kernel - [PATCH v10 13/20] x86/asm/crypto: Move .Lbswap

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Message-Id: <bd64f0067ff6ce59d1b2e381c2828353c2797b72.1439521412.git.jpoimboe@redhat.com>
Date:	Thu, 13 Aug 2015 22:10:34 -0500
From:	Josh Poimboeuf <jpoimboe@...hat.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Cc:	linux-kernel@...r.kernel.org, Michal Marek <mmarek@...e.cz>,
	Peter Zijlstra <peterz@...radead.org>,
	Andy Lutomirski <luto@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>,
	Pedro Alves <palves@...hat.com>,
	Namhyung Kim <namhyung@...il.com>,
	Bernd Petrovitsch <bernd@...rovitsch.priv.at>,
	"Chris J Arges" <chris.j.arges@...onical.com>,
	live-patching@...r.kernel.org,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH v10 13/20] x86/asm/crypto: Move .Lbswap_mask data to .rodata section

stackvalidate reports the following warning:

  stackvalidate: arch/x86/crypto/aesni-intel_asm.o: _aesni_inc_init(): can't find starting instruction

stackvalidate gets confused when it tries to disassemble the following
data in the .text section:

  .Lbswap_mask:
          .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0

Move it to .rodata which is a more appropriate section for read-only
data.

Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Herbert Xu <herbert@...dor.apana.org.au>
Cc: "David S. Miller" <davem@...emloft.net>
---
 arch/x86/crypto/aesni-intel_asm.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S
index 289ef12..18f0ced 100644
--- a/arch/x86/crypto/aesni-intel_asm.S
+++ b/arch/x86/crypto/aesni-intel_asm.S
@@ -2553,9 +2553,11 @@ ENTRY(aesni_cbc_dec)
 ENDPROC(aesni_cbc_dec)
 
 #ifdef __x86_64__
+.pushsection .rodata
 .align 16
 .Lbswap_mask:
 	.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
+.popsection
 
 /*
  * _aesni_inc_init:	internal ABI
-- 
2.4.3

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