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x86/entry/fred: Push __KERNEL_CS directly

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

No functional changes.

Suggested-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Xin Li (Intel) <xin@zytor.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250822071644.1405268-1-xin@zytor.com
This commit is contained in:
Xin Li (Intel) 2025-08-22 00:16:44 -07:00 committed by Borislav Petkov (AMD)
parent ae7c0996c0
commit 5be502174b
1 changed files with 1 additions and 2 deletions
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3
arch/x86/entry/entry_64_fred.S
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@ -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