The patch titled
Subject: m68k: use asm-generic/memory_model.h for both MMU and !MMU
has been added to the -mm mm-unstable branch. Its filename is
m68k-use-asm-generic-memory_modelh-for-both-mmu-and-mmu.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/m68k-use-asm-generic-memory_modelh-for-both-mmu-and-mmu.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Mike Rapoport (IBM)" <rppt@xxxxxxxxxx>
Subject: m68k: use asm-generic/memory_model.h for both MMU and !MMU
Date: Wed, 25 Jan 2023 21:07:55 +0200
Patch series "mm, arch: add generic implementation of pfn_valid() for
FLATMEM".
Every architecture that supports FLATMEM memory model defines its own
version of pfn_valid() that essentially compares a pfn to max_mapnr.
Use mips/powerpc version implemented as static inline as a generic
implementation of pfn_valid() and drop its per-architecture definitions
This patch (of 3):
The MMU variant uses generic definitions of page_to_pfn() and
pfn_to_page(), but !MMU defines them in include/asm/page_no.h for no good
reason.
Include asm-generic/memory_model.h in the common include/asm/page.h and
drop redundant definitions.
Link: https://lkml.kernel.org/r/20230125190757.22555-1-rppt@xxxxxxxxxx
Link: https://lkml.kernel.org/r/20230125190757.22555-2-rppt@xxxxxxxxxx
Signed-off-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Brian Cain <bcain@xxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Dinh Nguyen <dinguyen@xxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Greg Ungerer <gerg@xxxxxxxxxxxxxx>
Cc: Guo Ren <guoren@xxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Huacai Chen <chenhuacai@xxxxxxxxxx>
Cc: Matt Turner <mattst88@xxxxxxxxx>
Cc: Max Filippov <jcmvbkbc@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Michal Simek <monstr@xxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: Stafford Horne <shorne@xxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Vineet Gupta <vgupta@xxxxxxxxxx>
Cc: WANG Xuerui <kernel@xxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/arch/m68k/include/asm/page.h~m68k-use-asm-generic-memory_modelh-for-both-mmu-and-mmu
+++ a/arch/m68k/include/asm/page.h
@@ -62,11 +62,7 @@ extern unsigned long _ramend;
#include <asm/page_no.h>
#endif
-#ifndef CONFIG_MMU
-#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT))
-#define __pfn_to_phys(pfn) PFN_PHYS(pfn)
-#endif
-
#include <asm-generic/getorder.h>
+#include <asm-generic/memory_model.h>
#endif /* _M68K_PAGE_H */
--- a/arch/m68k/include/asm/page_mm.h~m68k-use-asm-generic-memory_modelh-for-both-mmu-and-mmu
+++ a/arch/m68k/include/asm/page_mm.h
@@ -134,7 +134,6 @@ extern int m68k_virt_to_node_shift;
})
#define ARCH_PFN_OFFSET (m68k_memory[0].addr >> PAGE_SHIFT)
-#include <asm-generic/memory_model.h>
#define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
#define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn))
--- a/arch/m68k/include/asm/page_no.h~m68k-use-asm-generic-memory_modelh-for-both-mmu-and-mmu
+++ a/arch/m68k/include/asm/page_no.h
@@ -25,8 +25,6 @@ extern unsigned long memory_end;
#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
#define page_to_virt(page) __va(((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET))
-#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
-#define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET) && \
_
Patches currently in -mm which might be from rppt@xxxxxxxxxx are
mm-sparse-fix-unused-function-pgdat_to_phys-warning.patch
m68k-use-asm-generic-memory_modelh-for-both-mmu-and-mmu.patch
mips-drop-definition-of-pfn_valid-for-discontigmem.patch
mm-arch-add-generic-implementation-of-pfn_valid-for-flatmem.patch
