The quilt patch titled
Subject: mm: add update_mmu_tlb_range()
has been removed from the -mm tree. Its filename was
mm-add-update_mmu_tlb_range.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Bang Li" <libang.li@xxxxxxxxxxxx>
Subject: mm: add update_mmu_tlb_range()
Date: Wed, 22 May 2024 14:12:02 +0800
Patch series "Add update_mmu_tlb_range() to simplify code", v4.
This series of commits mainly adds the update_mmu_tlb_range() to batch
update tlb in an address range and implement update_mmu_tlb() using
update_mmu_tlb_range().
After commit 19eaf44954df ("mm: thp: support allocation of anonymous
multi-size THP"), We may need to batch update tlb of a certain address
range by calling update_mmu_tlb() in a loop. Using the
update_mmu_tlb_range(), we can simplify the code and possibly reduce the
execution of some unnecessary code in some architectures.
This patch (of 3):
Add update_mmu_tlb_range(), we can batch update tlb of an address range.
Link: https://lkml.kernel.org/r/20240522061204.117421-1-libang.li@xxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20240522061204.117421-2-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 | 7 +++++++
6 files changed, 22 insertions(+)
--- a/arch/loongarch/include/asm/pgtable.h~mm-add-update_mmu_tlb_range
+++ a/arch/loongarch/include/asm/pgtable.h
@@ -469,6 +469,8 @@ static inline void update_mmu_cache_rang
#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)
static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
--- a/arch/mips/include/asm/pgtable.h~mm-add-update_mmu_tlb_range
+++ a/arch/mips/include/asm/pgtable.h
@@ -596,6 +596,8 @@ static inline void update_mmu_cache_rang
#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)
static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
--- a/arch/riscv/include/asm/pgtable.h~mm-add-update_mmu_tlb_range
+++ a/arch/riscv/include/asm/pgtable.h
@@ -491,6 +491,8 @@ static inline void update_mmu_cache_rang
#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)
static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
--- a/arch/xtensa/include/asm/pgtable.h~mm-add-update_mmu_tlb_range
+++ a/arch/xtensa/include/asm/pgtable.h
@@ -413,6 +413,9 @@ 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
#endif /* !defined (__ASSEMBLY__) */
--- a/arch/xtensa/mm/tlb.c~mm-add-update_mmu_tlb_range
+++ a/arch/xtensa/mm/tlb.c
@@ -169,6 +169,12 @@ void update_mmu_tlb(struct vm_area_struc
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)
+{
+ local_flush_tlb_range(vma, address, address + PAGE_SIZE * nr);
+}
+
#ifdef CONFIG_DEBUG_TLB_SANITY
static unsigned get_pte_for_vaddr(unsigned vaddr)
--- a/include/linux/pgtable.h~mm-add-update_mmu_tlb_range
+++ a/include/linux/pgtable.h
@@ -729,6 +729,13 @@ static inline void clear_full_ptes(struc
* fault. This function updates TLB only, do nothing with cache or others.
* It is the difference with function update_mmu_cache.
*/
+#ifndef update_mmu_tlb_range
+static inline void update_mmu_tlb_range(struct vm_area_struct *vma,
+ unsigned long address, pte_t *ptep, unsigned int nr)
+{
+}
+#endif
+
#ifndef __HAVE_ARCH_UPDATE_MMU_TLB
static inline void update_mmu_tlb(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
_
Patches currently in -mm which might be from libang.li@xxxxxxxxxxxx are
