torvalds/linux
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mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-04 20:19:47 +08:00
Code
0d60fd5032
linux/arch/sh/include/asm
History
Qi Zheng db6b435d73 mm: pgtable: introduce pagetable_dtor() 
The pagetable_p*_dtor() are exactly the same except for the handling of
ptlock.  If we make ptlock_free() handle the case where ptdesc->ptl is
NULL and remove VM_BUG_ON_PAGE() from pmd_ptlock_free(), we can unify
pagetable_p*_dtor() into one function.  Let's introduce pagetable_dtor()
to do this.

Later, pagetable_dtor() will be moved to tlb_remove_ptdesc(), so that
ptlock and page table pages can be freed together (regardless of whether
RCU is used).  This prevents the use-after-free problem where the ptlock
is freed immediately but the page table pages is freed later via RCU.

Link: https://lkml.kernel.org/r/47f44fff9dc68d9d9e9a0d6c036df275f820598a.1736317725.git.zhengqi.arch@bytedance.com
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Originally-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>	[s390]
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-01-25 20:22:22 -08:00
..
adc.h sh: remove __KERNEL__ ifdefs from non-UAPI headers 2020-08-14 22:05:14 -04:00
addrspace.h sh: remove __KERNEL__ ifdefs from non-UAPI headers 2020-08-14 22:05:14 -04:00
alignment.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
asm-offsets.h sh: include: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
atomic-grb.h locking/atomic: sh: add preprocessor symbols 2023-06-05 09:57:16 +02:00
atomic-irq.h locking/atomic: sh: add preprocessor symbols 2023-06-05 09:57:16 +02:00
atomic-llsc.h locking/atomic: sh: add preprocessor symbols 2023-06-05 09:57:16 +02:00
atomic.h locking/atomic: make atomic*_{cmp,}xchg optional 2023-06-05 09:57:14 +02:00
barrier.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
bitops-cas.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bitops-grb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bitops-llsc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bitops-op32.h provide arch_test_bit_acquire for architectures that define test_bit 2022-08-27 09:49:54 -07:00
bitops.h include: move find.h from asm_generic to linux 2022-01-15 08:47:31 -08:00
bl_bit_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bl_bit.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
bug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cache_insns_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cache_insns.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
cache.h sh: move the ARCH_DMA_MINALIGN definition to asm/cache.h 2023-06-19 16:19:24 -07:00
cacheflush.h sh: cache: Move forward declarations to <asm/cacheflush.h> 2024-05-02 12:01:31 +02:00
cachetype.h Introduce cpu_dcache_is_aliasing() across all architectures 2024-02-22 15:27:19 -08:00
checksum_32.h sh: checksum: add missing linux/uaccess.h include 2023-01-30 21:04:21 -08:00
checksum.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
clock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmpxchg-cas.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmpxchg-grb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmpxchg-irq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmpxchg-llsc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmpxchg-xchg.h sh: include: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
cmpxchg.h sh: Emulate one-byte cmpxchg 2024-09-13 07:10:38 -07:00
device.h sh: include: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
dma-register.h sh: include: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
dma.h sh: dma: Remove unused functionality 2024-05-02 12:01:25 +02:00
dmabrg.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dwarf.h sh: include: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
elf.h sh: remove __KERNEL__ ifdefs from non-UAPI headers 2020-08-14 22:05:14 -04:00
entry-macros.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
extable.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
fixmap.h sh/highmem: Remove all traces of unused cruft 2020-11-06 23:14:54 +01:00
flat.h move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
fpu.h sh: fpu: Add missing forward declarations 2024-05-02 12:01:23 +02:00
freq.h sh: remove __KERNEL__ ifdefs from non-UAPI headers 2020-08-14 22:05:14 -04:00
ftrace.h sh: ftrace: Fix missing prototypes 2024-05-02 12:01:24 +02:00
futex-cas.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
futex-irq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
futex-llsc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
futex.h sh: remove __KERNEL__ ifdefs from non-UAPI headers 2020-08-14 22:05:14 -04:00
hardirq.h sh: irqstat: Use the generic irq_cpustat_t 2020-11-23 10:31:06 +01:00
hd64461.h sh: hd64461: Handle virq offset for offchip IRQ base and HD64461 IRQ 2023-07-13 08:37:53 +02:00
heartbeat.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugetlb.h mm: consolidate common checks in hugetlb_get_unmapped_area 2024-11-06 20:11:10 -08:00
hw_breakpoint.h sh: hw_breakpoint: Add missing forward declaration for arch_bp_generic_fields() 2024-05-02 12:01:23 +02:00
hw_irq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
i2c-sh7760.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io_generic.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io_noioport.h sh: add <asm-generic/io.h> including 2023-08-18 10:12:34 -07:00
io_trapped.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io.h asm/io: remove unnecessary xlate_dev_mem_ptr() and unxlate_dev_mem_ptr() 2023-11-23 10:37:40 +01:00
irq.h sh: Remove unused declarations for make_maskreg_irq() and irq_mask_register 2024-09-26 17:24:51 +02:00
irqflags.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kbuild asm-generic: introduce text-patching.h 2024-11-07 14:25:15 -08:00
kdebug.h Revert "sh: add loglvl to printk_address()" 2020-08-14 22:05:07 -04:00
kexec.h sh, kexec: fix the incorrect ifdeffery and dependency of CONFIG_KEXEC 2023-12-12 17:20:18 -08:00
kgdb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kprobes.h kprobes: unify kprobes_exceptions_nofify() prototypes 2023-11-10 19:59:05 +09:00
linkage.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
machvec.h sh: machvec: Remove custom ioport_{un,}map() 2023-10-25 16:50:30 +02:00
mmiowb.h sh/mmiowb: Add unconditional mmiowb() to arch_spin_unlock() 2019-04-08 12:00:21 +01:00
mmu_context_32.h sh: use asm-generic/mmu_context.h for no-op implementations 2020-10-27 16:02:38 +01:00
mmu_context.h sh: use asm-generic/mmu_context.h for no-op implementations 2020-10-27 16:02:38 +01:00
mmu.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmzone.h arch, mm: move definition of node_data to generic code 2024-09-03 21:15:28 -07:00
module.h arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
page.h asm-generic updates for 6.13 2024-11-20 15:13:02 -08:00
pci.h PCI: Remove pci_get_legacy_ide_irq() and asm-generic/pci.h 2022-07-22 17:23:45 -05:00
perf_event.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pgalloc.h mm: pgtable: introduce pagetable_dtor() 2025-01-25 20:22:22 -08:00
pgtable_32.h Add x86 shadow stack support 2023-08-31 12:20:12 -07:00
pgtable-2level.h sh: add support for folded p4d page tables 2020-06-04 19:06:21 -07:00
pgtable-3level.h sh/mm: Fix pmd_t for real 2023-01-10 05:31:42 -06:00
pgtable.h sh: implement the new page table range API 2023-08-24 16:20:23 -07:00
platform_early.h sh: add the sh_ prefix to early platform symbols 2019-10-07 13:50:48 +02:00
posix_types.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
processor_32.h sh: sanitize the flags on sigreturn 2023-03-09 10:01:59 -08:00
processor.h sh/cpu: Switch to arch_cpu_finalize_init() 2023-06-16 10:16:00 +02:00
ptrace_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ptrace.h sh: don't use asm-generic/ptrace.h 2019-07-01 17:51:40 +02:00
push-switch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
reboot.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
romimage-macros.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rtc.h init: consolidate prototypes in linux/init.h 2023-06-09 17:44:16 -07:00
seccomp.h sh: Enable seccomp architecture tracking 2020-11-20 11:16:35 -08:00
sections.h sh: machvec: Use char[] for section boundaries 2022-09-13 10:33:17 -07:00
setup.h sh: setup: Add missing forward declaration for sh_fdt_init() 2024-05-13 15:37:11 +02:00
sfp-machine.h sh: define __BIG_ENDIAN for math-emu 2021-10-27 16:51:24 -04:00
sh7760fb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sh_bios.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
shmparam.h sh: include: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
siu.h sh: include: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
smc37c93x.h arch: sh: smc37c93x: fix spelling mistake 2020-08-14 22:05:05 -04:00
smp-ops.h sh/cpu: Mark play_dead() __noreturn 2023-03-08 08:44:24 -08:00
smp.h treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
sparsemem.h Cleanup, SECCOMP_FILTER support, message printing fixes, and other 2020-08-15 18:50:32 -07:00
spi.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spinlock_types.h Improve consistency of '#error' directive messages 2024-11-11 17:17:04 -08:00
spinlock-cas.h sh: include: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
spinlock-llsc.h sh/mmiowb: Add unconditional mmiowb() to arch_spin_unlock() 2019-04-08 12:00:21 +01:00
spinlock.h sh: include: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
sram.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stackprotector.h stackprotector: actually use get_random_canary() 2022-11-18 02:18:10 +01:00
stacktrace.h sh: stacktrace: Remove stacktrace_ops.stack() 2020-08-14 22:05:11 -04:00
string_32.h Cleanup, SECCOMP_FILTER support, message printing fixes, and other 2020-08-15 18:50:32 -07:00
string.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
suspend.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
switch_to_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
switch_to.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
syscall_32.h arch: remove unused function syscall_set_arguments() 2021-09-14 16:06:20 +02:00
syscall.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
syscalls_32.h sh: remove __KERNEL__ ifdefs from non-UAPI headers 2020-08-14 22:05:14 -04:00
syscalls.h sh: syscall: Add missing forward declaration for sys_cacheflush() 2024-05-02 12:01:23 +02:00
thread_info.h thread_info: move function declarations to linux/thread_info.h 2023-06-09 17:44:16 -07:00
timex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tlb.h sh: tlb: Add missing forward declaration for handle_tlbmiss() 2024-05-02 12:01:23 +02:00
tlbflush.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
topology.h arch/sh/include/asm/topology.h: remove unused parent_node() macro 2017-11-17 16:10:04 -08:00
traps_32.h arch: add do_page_fault prototypes 2023-11-23 11:32:32 +01:00
traps.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
types.h sh: Replace <uapi/asm/types.h> by <asm-generic/int-ll64.h> 2023-04-25 09:16:51 +02:00
uaccess_32.h sh: Implement __get_user_u64() required for 64-bit get_user() 2020-08-14 22:05:04 -04:00
uaccess.h sh: remove CONFIG_SET_FS support 2022-02-25 09:36:06 +01:00
uncached.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
unistd.h clone3: drop __ARCH_WANT_SYS_CLONE3 macro 2024-07-10 14:23:38 +02:00
unwinder.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
user.h asm/user.h: killed unused macros 2022-01-30 21:17:00 -05:00
vermagic.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
vmalloc.h mm/vmalloc: Add empty <asm/vmalloc.h> headers and use them from <linux/vmalloc.h> 2019-12-10 10:12:55 +01:00
vmlinux.lds.h sh: remove sh5 support 2020-06-01 14:48:52 -04:00
watchdog.h sh: remove __KERNEL__ ifdefs from non-UAPI headers 2020-08-14 22:05:14 -04:00
word-at-a-time.h kernel.h: removed REPEAT_BYTE from kernel.h 2024-02-01 09:47:59 -08:00