The patch titled
Subject: mm: implement update_mmu_tlb() using update_mmu_tlb_range()
has been added to the -mm mm-unstable branch. Its filename is
mm-implement-update_mmu_tlb-using-update_mmu_tlb_range.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-implement-update_mmu_tlb-using-update_mmu_tlb_range.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: "Bang Li" <libang.li@xxxxxxxxxxxx>
Subject: mm: implement update_mmu_tlb() using update_mmu_tlb_range()
Date: Wed, 22 May 2024 14:12:03 +0800
Let's make update_mmu_tlb() simply a generic wrapper around
update_mmu_tlb_range(). Only the latter can now be overridden by the
architecture. We can now remove __HAVE_ARCH_UPDATE_MMU_TLB as well.
Link: https://lkml.kernel.org/r/20240522061204.117421-3-libang.li@xxxxxxxxxxxx
Signed-off-by: Bang Li <libang.li@xxxxxxxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Chris Zankel <chris@xxxxxxxxxx>
Cc: Huacai Chen <chenhuacai@xxxxxxxxxx>
Cc: Lance Yang <ioworker0@xxxxxxxxx>
Cc: Max Filippov <jcmvbkbc@xxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx>
Cc: Ryan Roberts <ryan.roberts@xxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/loongarch/include/asm/pgtable.h | 2 --
arch/mips/include/asm/pgtable.h | 2 --
arch/riscv/include/asm/pgtable.h | 2 --
arch/xtensa/include/asm/pgtable.h | 3 ---
arch/xtensa/mm/tlb.c | 6 ------
include/linux/pgtable.h | 4 +---
6 files changed, 1 insertion(+), 18 deletions(-)
--- a/arch/loongarch/include/asm/pgtable.h~mm-implement-update_mmu_tlb-using-update_mmu_tlb_range
+++ a/arch/loongarch/include/asm/pgtable.h
@@ -467,8 +467,6 @@ static inline void update_mmu_cache_rang
#define update_mmu_cache(vma, addr, ptep) \
update_mmu_cache_range(NULL, vma, addr, ptep, 1)
-#define __HAVE_ARCH_UPDATE_MMU_TLB
-#define update_mmu_tlb update_mmu_cache
#define update_mmu_tlb_range(vma, addr, ptep, nr) \
update_mmu_cache_range(NULL, vma, addr, ptep, nr)
--- a/arch/mips/include/asm/pgtable.h~mm-implement-update_mmu_tlb-using-update_mmu_tlb_range
+++ a/arch/mips/include/asm/pgtable.h
@@ -594,8 +594,6 @@ static inline void update_mmu_cache_rang
#define update_mmu_cache(vma, address, ptep) \
update_mmu_cache_range(NULL, vma, address, ptep, 1)
-#define __HAVE_ARCH_UPDATE_MMU_TLB
-#define update_mmu_tlb update_mmu_cache
#define update_mmu_tlb_range(vma, address, ptep, nr) \
update_mmu_cache_range(NULL, vma, address, ptep, nr)
--- a/arch/riscv/include/asm/pgtable.h~mm-implement-update_mmu_tlb-using-update_mmu_tlb_range
+++ a/arch/riscv/include/asm/pgtable.h
@@ -489,8 +489,6 @@ static inline void update_mmu_cache_rang
#define update_mmu_cache(vma, addr, ptep) \
update_mmu_cache_range(NULL, vma, addr, ptep, 1)
-#define __HAVE_ARCH_UPDATE_MMU_TLB
-#define update_mmu_tlb update_mmu_cache
#define update_mmu_tlb_range(vma, addr, ptep, nr) \
update_mmu_cache_range(NULL, vma, addr, ptep, nr)
--- a/arch/xtensa/include/asm/pgtable.h~mm-implement-update_mmu_tlb-using-update_mmu_tlb_range
+++ a/arch/xtensa/include/asm/pgtable.h
@@ -410,9 +410,6 @@ void update_mmu_cache_range(struct vm_fa
typedef pte_t *pte_addr_t;
-void update_mmu_tlb(struct vm_area_struct *vma,
- unsigned long address, pte_t *ptep);
-#define __HAVE_ARCH_UPDATE_MMU_TLB
void update_mmu_tlb_range(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep, unsigned int nr);
#define update_mmu_tlb_range update_mmu_tlb_range
--- a/arch/xtensa/mm/tlb.c~mm-implement-update_mmu_tlb-using-update_mmu_tlb_range
+++ a/arch/xtensa/mm/tlb.c
@@ -163,12 +163,6 @@ void local_flush_tlb_kernel_range(unsign
}
}
-void update_mmu_tlb(struct vm_area_struct *vma,
- unsigned long address, pte_t *ptep)
-{
- local_flush_tlb_page(vma, address);
-}
-
void update_mmu_tlb_range(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep, unsigned int nr)
{
--- a/include/linux/pgtable.h~mm-implement-update_mmu_tlb-using-update_mmu_tlb_range
+++ a/include/linux/pgtable.h
@@ -736,13 +736,11 @@ static inline void update_mmu_tlb_range(
}
#endif
-#ifndef __HAVE_ARCH_UPDATE_MMU_TLB
static inline void update_mmu_tlb(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
+ update_mmu_tlb_range(vma, address, ptep, 1);
}
-#define __HAVE_ARCH_UPDATE_MMU_TLB
-#endif
/*
* Some architectures may be able to avoid expensive synchronization
_
Patches currently in -mm which might be from libang.li@xxxxxxxxxxxx are
mm-add-update_mmu_tlb_range.patch
mm-implement-update_mmu_tlb-using-update_mmu_tlb_range.patch
mm-use-update_mmu_tlb_range-to-simplify-code.patch
