[PATCH] powerpc: Use swapper_pg_dir instead of init_mm->pgd
From: Christophe Leroy <hidden>
Date: 2022-10-09 17:31:38
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
init_mm->pgd is always swapper_pg_dir[] which is known at build time. Directly use the later instead of loading it from init_mm struct at every time. Signed-off-by: Christophe Leroy <redacted> --- arch/powerpc/include/asm/pgtable.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 283f40d05a4d..f6843e6294d9 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h@@ -48,6 +48,9 @@ struct mm_struct; /* Keep these as a macros to avoid include dependency mess */ #define pte_page(x) pfn_to_page(pte_pfn(x)) #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) + +#define pgd_offset_k(address) pgd_offset_pgd(swapper_pg_dir, (address)) + /* * Select all bits except the pfn */
--
2.37.1