The patch titled
Subject: mm: rename GENERIC_PTDUMP and PTDUMP_CORE
has been added to the -mm mm-unstable branch. Its filename is
mm-rename-generic_ptdump-and-ptdump_core.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-rename-generic_ptdump-and-ptdump_core.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: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Subject: mm: rename GENERIC_PTDUMP and PTDUMP_CORE
Date: Mon, 17 Feb 2025 09:52:20 +0530
Platforms subscribe into generic ptdump implementation via GENERIC_PTDUMP.
But generic ptdump gets enabled via PTDUMP_CORE. These configs
combination is confusing as they sound very similar and does not
differentiate between platform's feature subscription and feature
enablement for ptdump. Rename the configs as ARCH_HAS_PTDUMP and PTDUMP
making it more clear and improve readability.
Link: https://lkml.kernel.org/r/20250217042220.32920-6-anshuman.khandual@xxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Marc Zyngier <maz@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Madhavan Srinivasan <maddy@xxxxxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Steven Price <steven.price@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/Kconfig | 2 +-
arch/arm64/include/asm/ptdump.h | 4 ++--
arch/arm64/kvm/Kconfig | 4 ++--
arch/arm64/mm/Makefile | 2 +-
arch/powerpc/Kconfig | 2 +-
arch/powerpc/mm/Makefile | 2 +-
arch/riscv/Kconfig | 2 +-
arch/riscv/mm/Makefile | 2 +-
arch/s390/Kconfig | 2 +-
arch/s390/mm/Makefile | 2 +-
arch/x86/Kconfig | 2 +-
arch/x86/Kconfig.debug | 2 +-
arch/x86/mm/Makefile | 2 +-
mm/Kconfig.debug | 12 ++++++------
mm/Makefile | 2 +-
15 files changed, 22 insertions(+), 22 deletions(-)
--- a/arch/arm64/include/asm/ptdump.h~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/arm64/include/asm/ptdump.h
@@ -7,7 +7,7 @@
#include <linux/ptdump.h>
-#ifdef CONFIG_PTDUMP_CORE
+#ifdef CONFIG_PTDUMP
#include <linux/mm_types.h>
#include <linux/seq_file.h>
@@ -70,6 +70,6 @@ static inline void ptdump_debugfs_regist
#else
static inline void note_page(struct ptdump_state *pt_st, unsigned long addr,
int level, u64 val) { }
-#endif /* CONFIG_PTDUMP_CORE */
+#endif /* CONFIG_PTDUMP */
#endif /* __ASM_PTDUMP_H */
--- a/arch/arm64/Kconfig~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/arm64/Kconfig
@@ -41,6 +41,7 @@ config ARM64
select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
select ARCH_HAS_NONLEAF_PMD_YOUNG if ARM64_HAFT
+ select ARCH_HAS_PTDUMP
select ARCH_HAS_PTE_DEVMAP
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_HW_PTE_YOUNG
@@ -157,7 +158,6 @@ config ARM64
select GENERIC_IRQ_SHOW_LEVEL
select GENERIC_LIB_DEVMEM_IS_ALLOWED
select GENERIC_PCI_IOMAP
- select GENERIC_PTDUMP
select GENERIC_SCHED_CLOCK
select GENERIC_SMP_IDLE_THREAD
select GENERIC_TIME_VSYSCALL
--- a/arch/arm64/kvm/Kconfig~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/arm64/kvm/Kconfig
@@ -71,8 +71,8 @@ config PTDUMP_STAGE2_DEBUGFS
depends on KVM
depends on DEBUG_KERNEL
depends on DEBUG_FS
- depends on GENERIC_PTDUMP
- select PTDUMP_CORE
+ depends on ARCH_HAS_PTDUMP
+ select PTDUMP
default n
help
Say Y here if you want to show the stage-2 kernel pagetables
--- a/arch/arm64/mm/Makefile~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/arm64/mm/Makefile
@@ -5,7 +5,7 @@ obj-y := dma-mapping.o extable.o faul
context.o proc.o pageattr.o fixmap.o
obj-$(CONFIG_ARM64_CONTPTE) += contpte.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-obj-$(CONFIG_PTDUMP_CORE) += ptdump.o
+obj-$(CONFIG_PTDUMP) += ptdump.o
obj-$(CONFIG_PTDUMP_DEBUGFS) += ptdump_debugfs.o
obj-$(CONFIG_TRANS_TABLE) += trans_pgd.o
obj-$(CONFIG_TRANS_TABLE) += trans_pgd-asm.o
--- a/arch/powerpc/Kconfig~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/powerpc/Kconfig
@@ -148,6 +148,7 @@ config PPC
select ARCH_HAS_PHYS_TO_DMA
select ARCH_HAS_PMEM_API
select ARCH_HAS_PREEMPT_LAZY
+ select ARCH_HAS_PTDUMP
select ARCH_HAS_PTE_DEVMAP if PPC_BOOK3S_64
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64
@@ -206,7 +207,6 @@ config PPC
select GENERIC_IRQ_SHOW
select GENERIC_IRQ_SHOW_LEVEL
select GENERIC_PCI_IOMAP if PCI
- select GENERIC_PTDUMP
select GENERIC_SMP_IDLE_THREAD
select GENERIC_TIME_VSYSCALL
select GENERIC_VDSO_TIME_NS
--- a/arch/powerpc/mm/Makefile~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/powerpc/mm/Makefile
@@ -15,5 +15,5 @@ obj-$(CONFIG_NUMA) += numa.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_NOT_COHERENT_CACHE) += dma-noncoherent.o
obj-$(CONFIG_PPC_COPRO_BASE) += copro_fault.o
-obj-$(CONFIG_PTDUMP_CORE) += ptdump/
+obj-$(CONFIG_PTDUMP) += ptdump/
obj-$(CONFIG_KASAN) += kasan/
--- a/arch/riscv/Kconfig~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/riscv/Kconfig
@@ -43,6 +43,7 @@ config RISCV
select ARCH_HAS_PMEM_API
select ARCH_HAS_PREEMPT_LAZY
select ARCH_HAS_PREPARE_SYNC_CORE_CMD
+ select ARCH_HAS_PTDUMP
select ARCH_HAS_PTE_DEVMAP if 64BIT && MMU
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SET_DIRECT_MAP if MMU
@@ -112,7 +113,6 @@ config RISCV
select GENERIC_IRQ_SHOW_LEVEL
select GENERIC_LIB_DEVMEM_IS_ALLOWED
select GENERIC_PCI_IOMAP
- select GENERIC_PTDUMP if MMU
select GENERIC_SCHED_CLOCK
select GENERIC_SMP_IDLE_THREAD
select GENERIC_TIME_VSYSCALL if MMU && 64BIT
--- a/arch/riscv/mm/Makefile~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/riscv/mm/Makefile
@@ -19,7 +19,7 @@ obj-y += context.o
obj-y += pmem.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-obj-$(CONFIG_PTDUMP_CORE) += ptdump.o
+obj-$(CONFIG_PTDUMP) += ptdump.o
obj-$(CONFIG_KASAN) += kasan_init.o
ifdef CONFIG_KASAN
--- a/arch/s390/Kconfig~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/s390/Kconfig
@@ -96,6 +96,7 @@ config S390
select ARCH_HAS_MEM_ENCRYPT
select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
select ARCH_HAS_PREEMPT_LAZY
+ select ARCH_HAS_PTDUMP
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SCALED_CPUTIME
select ARCH_HAS_SET_DIRECT_MAP
@@ -163,7 +164,6 @@ config S390
select GENERIC_CPU_VULNERABILITIES
select GENERIC_ENTRY
select GENERIC_GETTIMEOFDAY
- select GENERIC_PTDUMP
select GENERIC_SMP_IDLE_THREAD
select GENERIC_TIME_VSYSCALL
select GENERIC_VDSO_TIME_NS
--- a/arch/s390/mm/Makefile~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/s390/mm/Makefile
@@ -9,6 +9,6 @@ obj-y += page-states.o pageattr.o pgtab
obj-$(CONFIG_CMM) += cmm.o
obj-$(CONFIG_DEBUG_VIRTUAL) += physaddr.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-obj-$(CONFIG_PTDUMP_CORE) += dump_pagetables.o
+obj-$(CONFIG_PTDUMP) += dump_pagetables.o
obj-$(CONFIG_PGSTE) += gmap.o
obj-$(CONFIG_PFAULT) += pfault.o
--- a/arch/x86/Kconfig~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/x86/Kconfig
@@ -26,6 +26,7 @@ config X86_64
depends on 64BIT
# Options that are inherently 64-bit kernel only:
select ARCH_HAS_GIGANTIC_PAGE
+ select ARCH_HAS_PTDUMP
select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
select ARCH_SUPPORTS_PER_VMA_LOCK
select ARCH_SUPPORTS_HUGE_PFNMAP if TRANSPARENT_HUGEPAGE
@@ -174,7 +175,6 @@ config X86
select GENERIC_IRQ_RESERVATION_MODE
select GENERIC_IRQ_SHOW
select GENERIC_PENDING_IRQ if SMP
- select GENERIC_PTDUMP
select GENERIC_SMP_IDLE_THREAD
select GENERIC_TIME_VSYSCALL
select GENERIC_GETTIMEOFDAY
--- a/arch/x86/Kconfig.debug~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/x86/Kconfig.debug
@@ -59,7 +59,7 @@ config EARLY_PRINTK_USB_XDBC
config EFI_PGT_DUMP
bool "Dump the EFI pagetable"
depends on EFI
- select PTDUMP_CORE
+ select PTDUMP
help
Enable this if you want to dump the EFI page table before
enabling virtual mode. This can be used to debug miscellaneous
--- a/arch/x86/mm/Makefile~mm-rename-generic_ptdump-and-ptdump_core
+++ a/arch/x86/mm/Makefile
@@ -39,7 +39,7 @@ CFLAGS_fault.o := -I $(src)/../include/a
obj-$(CONFIG_X86_32) += pgtable_32.o iomap_32.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-obj-$(CONFIG_PTDUMP_CORE) += dump_pagetables.o
+obj-$(CONFIG_PTDUMP) += dump_pagetables.o
obj-$(CONFIG_PTDUMP_DEBUGFS) += debug_pagetables.o
obj-$(CONFIG_HIGHMEM) += highmem_32.o
--- a/mm/Kconfig.debug~mm-rename-generic_ptdump-and-ptdump_core
+++ a/mm/Kconfig.debug
@@ -186,9 +186,9 @@ config ARCH_HAS_DEBUG_WX
config DEBUG_WX
bool "Warn on W+X mappings at boot"
depends on ARCH_HAS_DEBUG_WX
- depends on GENERIC_PTDUMP
+ depends on ARCH_HAS_PTDUMP
depends on MMU
- select PTDUMP_CORE
+ select PTDUMP
help
Generate a warning if any W+X mappings are found at boot.
@@ -213,18 +213,18 @@ config DEBUG_WX
If in doubt, say "Y".
-config GENERIC_PTDUMP
+config ARCH_HAS_PTDUMP
bool
-config PTDUMP_CORE
+config PTDUMP
bool
config PTDUMP_DEBUGFS
bool "Export kernel pagetable layout to userspace via debugfs"
depends on DEBUG_KERNEL
depends on DEBUG_FS
- depends on GENERIC_PTDUMP
- select PTDUMP_CORE
+ depends on ARCH_HAS_PTDUMP
+ select PTDUMP
help
Say Y here if you want to show the kernel pagetable layout in a
debugfs file. This information is only useful for kernel developers
--- a/mm/Makefile~mm-rename-generic_ptdump-and-ptdump_core
+++ a/mm/Makefile
@@ -136,7 +136,7 @@ obj-$(CONFIG_ZONE_DEVICE) += memremap.o
obj-$(CONFIG_HMM_MIRROR) += hmm.o
obj-$(CONFIG_MEMFD_CREATE) += memfd.o
obj-$(CONFIG_MAPPING_DIRTY_HELPERS) += mapping_dirty_helpers.o
-obj-$(CONFIG_PTDUMP_CORE) += ptdump.o
+obj-$(CONFIG_PTDUMP) += ptdump.o
obj-$(CONFIG_PAGE_REPORTING) += page_reporting.o
obj-$(CONFIG_IO_MAPPING) += io-mapping.o
obj-$(CONFIG_HAVE_BOOTMEM_INFO_NODE) += bootmem_info.o
_
Patches currently in -mm which might be from anshuman.khandual@xxxxxxx are
configs-drop-generic_ptdump-from-debugconfig.patch
arch-powerpc-drop-generic_ptdump-from-mpc885_ads_defconfig.patch
docs-arm64-drop-ptdump-config-options-from-ptdumprst.patch
mm-make-debug_wx-depdendent-on-generic_ptdump.patch
mm-rename-generic_ptdump-and-ptdump_core.patch
