2022-08-26 01:53:19

by Dmitrii Bundin

[permalink] [raw]
Subject: [PATCH] x86/mm: dynamic memory layout declarations

The declarations page_offset_base, vmalloc_base and vmemmap_base makes
sense only if CONFIG_DYNAMIC_MEMORY_LAYOUT is enabled. Hides the
declarations behind a conditional macro checking the option.

Signed-off-by: Dmitrii Bundin <[email protected]>
---
arch/x86/include/asm/page_64.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/x86/include/asm/page_64.h b/arch/x86/include/asm/page_64.h
index baa70451b8df..2968b3644912 100644
--- a/arch/x86/include/asm/page_64.h
+++ b/arch/x86/include/asm/page_64.h
@@ -12,9 +12,11 @@
extern unsigned long max_pfn;
extern unsigned long phys_base;

+#ifdef CONFIG_DYNAMIC_MEMORY_LAYOUT
extern unsigned long page_offset_base;
extern unsigned long vmalloc_base;
extern unsigned long vmemmap_base;
+#endif /* CONFIG_DYNAMIC_MEMORY_LAYOUT */

static __always_inline unsigned long __phys_addr_nodebug(unsigned long x)
{
--
2.17.1