x86: add a Kconfig symbol for when relocations are needed

We only need to build relocations when we are building a 32-bit relocatable kernel. Rather than unnecessarily complicating the Makefiles, make an explicit Kbuild symbol for this. [ Impact: permits future cleanup ] Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Sam Ravnborg <sam@ravnborg.org>

x86: add a Kconfig symbol for when relocations are needed
We only need to build relocations when we are building a 32-bit relocatable kernel. Rather than unnecessarily complicating the Makefiles, make an explicit Kbuild symbol for this. [ Impact: permits future cleanup ] Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Sam Ravnborg <sam@ravnborg.org>
H. Peter Anvin
1 parent d3dd3b5a29
Showing 1 changed file with 5 additions and 0 deletions Side-by-side Diff
arch/x86/Kconfig
@@ -1513,6 +1513,11 @@
 	  it has been loaded at and the compile time physical address
 	  (CONFIG_PHYSICAL_START) is ignored.
  
+# Relocation on x86-32 needs some additional build support
+config X86_NEED_RELOCS
+	def_bool y
+	depends on X86_32 && RELOCATABLE
+
 config PHYSICAL_ALIGN
 	hex
 	prompt "Alignment value to which kernel should be aligned" if X86_32
...	...	@@ -1513,6 +1513,11 @@
1513	1513	it has been loaded at and the compile time physical address
1514	1514	(CONFIG_PHYSICAL_START) is ignored.
1515	1515
	1516	+# Relocation on x86-32 needs some additional build support
	1517	+config X86_NEED_RELOCS
	1518	+ def_bool y
	1519	+ depends on X86_32 && RELOCATABLE
	1520	+
1516	1521	config PHYSICAL_ALIGN
1517	1522	hex
1518	1523	prompt "Alignment value to which kernel should be aligned" if X86_32