From efcc54ed4be6dda64711a87b0e7e9fac51fd31fa Mon Sep 17 00:00:00 2001
From: Emin Arslan <me@emin.engineer>
Date: Mon, 4 May 2026 11:15:50 +0300
Subject: [PATCH] fix: add Xen PVH ELF note to enable QEMU -kernel boot

Co-authored-by: aider (openrouter/moonshotai/kimi-k2.6) <aider@aider.chat>
---
 kernel.ld      | 5 +++++
 kernel_entry.S | 9 +++++++++
 2 files changed, 14 insertions(+)

diff --git a/kernel.ld b/kernel.ld
index cda9d25..9e1b865 100644
--- a/kernel.ld
+++ b/kernel.ld
@@ -27,4 +27,9 @@ SECTIONS
         *(COMMON)
         __bss_end = .;
     }
+
+    .note : ALIGN(4)
+    {
+        *(.note.Xen)
+    }
 }
diff --git a/kernel_entry.S b/kernel_entry.S
index 487384f..9cd45d9 100644
--- a/kernel_entry.S
+++ b/kernel_entry.S
@@ -88,6 +88,15 @@ long_mode_start:
     hlt
     jmp 1b
 
+.section .note.Xen, "a", @note
+.align 4
+.long 4
+.long 4
+.long 18
+.asciz "Xen"
+.align 4
+.long _start
+
 .section .rodata
 .align 8
 gdt64: