linux-kernel - [tip: x86/cleanups] x86/sgx: Use ENCLS mnemonic in <kernel/cpu/sgx/encls.h>

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Message-ID: <175627714549.1920.13829887049245292535.tip-bot2@tip-bot2>
Date: Wed, 27 Aug 2025 06:45:45 -0000
From: "tip-bot2 for Uros Bizjak" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Uros Bizjak <ubizjak@...il.com>, "Borislav Petkov (AMD)" <bp@...en8.de>,
 Jarkko Sakkinen <jarkko@...nel.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject:
 [tip: x86/cleanups] x86/sgx: Use ENCLS mnemonic in <kernel/cpu/sgx/encls.h>

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

Commit-ID:     13bdfb53aa04eeb8022af87288c5bc0a5d13a834
Gitweb:        https://git.kernel.org/tip/13bdfb53aa04eeb8022af87288c5bc0a5d13a834
Author:        Uros Bizjak <ubizjak@...il.com>
AuthorDate:    Mon, 16 Jun 2025 10:56:30 +02:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Mon, 25 Aug 2025 17:28:43 +02:00

x86/sgx: Use ENCLS mnemonic in <kernel/cpu/sgx/encls.h>

Current minimum required version of binutils is 2.30, which supports ENCLS
instruction mnemonic.

Replace the byte-wise specification of ENCLS with this proper mnemonic.

No functional change intended.

Signed-off-by: Uros Bizjak <ubizjak@...il.com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>
Link: https://lore.kernel.org/20250616085716.158942-1-ubizjak@gmail.com
---
 arch/x86/kernel/cpu/sgx/encls.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/sgx/encls.h b/arch/x86/kernel/cpu/sgx/encls.h
index 99004b0..42a088a 100644
--- a/arch/x86/kernel/cpu/sgx/encls.h
+++ b/arch/x86/kernel/cpu/sgx/encls.h
@@ -68,7 +68,7 @@ static inline bool encls_failed(int ret)
 	({							\
 	int ret;						\
 	asm volatile(						\
-	"1: .byte 0x0f, 0x01, 0xcf;\n\t"			\
+	"1: encls\n"						\
 	"2:\n"							\
 	_ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_FAULT_SGX)		\
 	: "=a"(ret)						\
@@ -111,8 +111,8 @@ static inline bool encls_failed(int ret)
 	({							\
 	int ret;						\
 	asm volatile(						\
-	"1: .byte 0x0f, 0x01, 0xcf;\n\t"			\
-	"   xor %%eax,%%eax;\n"					\
+	"1: encls\n\t"						\
+	"xor %%eax,%%eax\n"					\
 	"2:\n"							\
 	_ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_FAULT_SGX)		\
 	: "=a"(ret), "=b"(rbx_out)				\