linux-kernel - [tip: x86/alternatives] x86/alternative: Convert the asm ALTERNATIVE

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Date: Tue, 11 Jun 2024 16:53:47 -0000
From: "tip-bot2 for Borislav Petkov (AMD)" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: "Borislav Petkov (AMD)" <bp@...en8.de>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/alternatives] x86/alternative: Convert the asm
 ALTERNATIVE_2() macro

The following commit has been merged into the x86/alternatives branch of tip:

Commit-ID:     08a621fcf4a4a4d765315ffe6a28f5d31e8237b2
Gitweb:        https://git.kernel.org/tip/08a621fcf4a4a4d765315ffe6a28f5d31e8237b2
Author:        Borislav Petkov (AMD) <bp@...en8.de>
AuthorDate:    Fri, 07 Jun 2024 13:16:59 +02:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Tue, 11 Jun 2024 18:27:14 +02:00

x86/alternative: Convert the asm ALTERNATIVE_2() macro

Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lore.kernel.org/r/20240607111701.8366-13-bp@kernel.org
---
 arch/x86/include/asm/alternative.h | 22 ----------------------
 1 file changed, 22 deletions(-)

diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h
index 31b9a47..28e07a0 100644
--- a/arch/x86/include/asm/alternative.h
+++ b/arch/x86/include/asm/alternative.h
@@ -461,28 +461,6 @@ void nop_func(void);
  * @feature2, it replaces @oldinstr with @feature2.
  */
 .macro ALTERNATIVE_2 oldinstr, newinstr1, ft_flags1, newinstr2, ft_flags2
-140:
-	\oldinstr
-141:
-	.skip -((alt_max_2(new_len1, new_len2) - (old_len)) > 0) * \
-		(alt_max_2(new_len1, new_len2) - (old_len)),0x90
-142:
-
-	.pushsection .altinstructions,"a"
-	altinstr_entry 140b,143f,\ft_flags1,142b-140b,144f-143f
-	altinstr_entry 140b,144f,\ft_flags2,142b-140b,145f-144f
-	.popsection
-
-	.pushsection .altinstr_replacement,"ax"
-143:
-	\newinstr1
-144:
-	\newinstr2
-145:
-	.popsection
-.endm
-
-.macro N_ALTERNATIVE_2 oldinstr, newinstr1, ft_flags1, newinstr2, ft_flags2
 	__N_ALTERNATIVE(__N_ALTERNATIVE(\oldinstr, \newinstr1, \ft_flags1),
 		      \newinstr2, \ft_flags2)
 .endm