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@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

diff --git a/arch/x86/entry/entry_64_fred.S b/arch/x86/entry/entry_64_fred.S
index 29c5c32c16c364fe27251d5cc304a34909024d6f..cb5ff2b1f6e777723f703f14331e29765fa50ad2 100644 (file)
--- 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