linux-kernel - [tip: x86/cleanups] x86/entry/fred: Push __KERNEL

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Message-ID: <175586298002.1420.6153246374508716763.tip-bot2@tip-bot2>
Date: Fri, 22 Aug 2025 11:42:59 -0000
From: "tip-bot2 for Xin Li (Intel)" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: "H. Peter Anvin (Intel)" <hpa@...or.com>, "Xin Li (Intel)" <xin@...or.com>,
 "Borislav Petkov (AMD)" <bp@...en8.de>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/cleanups] x86/entry/fred: Push __KERNEL_CS directly

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

Commit-ID:     5be502174bf0f5d0aafaab57fa4512723d6d2973
Gitweb:        https://git.kernel.org/tip/5be502174bf0f5d0aafaab57fa4512723d6d2973
Author:        Xin Li (Intel) <xin@...or.com>
AuthorDate:    Fri, 22 Aug 2025 00:16:44 -07:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Fri, 22 Aug 2025 13:12:50 +02:00

x86/entry/fred: Push __KERNEL_CS directly

Push __KERNEL_CS directly, rather than moving it into RAX and then
pushing RAX.

No functional changes.

Suggested-by: H. Peter Anvin (Intel) <hpa@...or.com>
Signed-off-by: Xin Li (Intel) <xin@...or.com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Link: https://lore.kernel.org/20250822071644.1405268-1-xin@zytor.com
---
 arch/x86/entry/entry_64_fred.S | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/entry/entry_64_fred.S b/arch/x86/entry/entry_64_fred.S
index 29c5c32..cb5ff2b 100644
--- a/arch/x86/entry/entry_64_fred.S
+++ b/arch/x86/entry/entry_64_fred.S
@@ -97,8 +97,7 @@ SYM_FUNC_START(asm_fred_entry_from_kvm)
 	push %rdi			/* fred_ss handed in by the caller */
 	push %rbp
 	pushf
-	mov $__KERNEL_CS, %rax
-	push %rax
+	push $__KERNEL_CS

 	/*
 	 * Unlike the IDT event delivery, FRED _always_ pushes an error code