[PATCH] vgaentry.S: Add missing SHF_ALLOC flag to .rom.header

[Fangrui Song]

It does not make sense to reference a SHF_ALLOC section from a
non-SHF_ALLOC section via R_386_PC16. Conceptually, even if a
non-SHF_ALLOC is loaded as part of the memory image, the distance
between it and a SHF_ALLOC section may not be a constant, so the linker
cannot reasonably resolve the relocation.

GNU ld allows it but lld will warn. Add the SHF_ALLOC flag.

Signed-off-by: Fangrui Song 
---
 vgasrc/vgaentry.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vgasrc/vgaentry.S b/vgasrc/vgaentry.S
index f9624fc..93f28f9 100644
--- a/vgasrc/vgaentry.S
+++ b/vgasrc/vgaentry.S
@@ -14,7 +14,7 @@
  * Rom Header
  ****************************************************************/

-        .section .rom.header
+        .section .rom.header,"a"
         .code16
         .global _rom_header, _rom_header_size, _rom_header_checksum
 _rom_header: