linux/include/asm-generic
Julian Vetter b660d0a2ac
New implementation for IO memcpy and IO memset
The IO memcpy and IO memset functions in asm-generic/io.h simply call
memcpy and memset. This can lead to alignment problems or faults on
architectures that do not define their own version and fall back to
these defaults.
This patch introduces new implementations for IO memcpy and IO memset,
that use read{l,q} accessor functions, align accesses to machine word
size, and resort to byte accesses when the target memory is not aligned.
For new architectures and existing ones that were using the old
fallbacks these functions are save to use, because IO memory constraints
are taken into account. Moreover, architectures with similar
implementations can now use these new versions, not needing to implement
their own.

Reviewed-by: Yann Sionneau <ysionneau@kalrayinc.com>
Signed-off-by: Julian Vetter <jvetter@kalrayinc.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2024-10-28 21:44:29 +00:00
..
bitops bitops: Change function return types from long to int 2024-05-03 17:04:50 +02:00
vdso
access_ok.h uaccess: remove CONFIG_SET_FS 2022-02-25 09:36:06 +01:00
agp.h char/agp: introduce asm-generic/agp.h 2023-02-13 22:13:29 +01:00
archrandom.h random: handle archrandom with multiple longs 2022-07-25 13:26:14 +02:00
asm-offsets.h
asm-prototypes.h
atomic64.h
atomic.h locking/atomic: make atomic*_{cmp,}xchg optional 2023-06-05 09:57:14 +02:00
audit_change_attr.h
audit_dir_write.h
audit_read.h
audit_signal.h
audit_write.h
barrier.h sched: Add missing memory barrier in switch_mm_cid 2024-04-16 13:59:45 +02:00
bitops.h include: move find.h from asm_generic to linux 2022-01-15 08:47:31 -08:00
bitsperlong.h
bug.h bug: Improve comment 2024-05-07 14:20:48 +02:00
cache.h
cacheflush.h mm: Introduce flush_cache_vmap_early() 2023-12-14 00:23:17 -08:00
cfi.h cfi: Flip headers 2023-12-15 16:25:55 -08:00
checksum.h asm-generic: Improve csum_fold 2024-01-17 17:52:29 -08:00
cmpxchg-local.h asm-generic: Fix 32 bit __generic_cmpxchg_local 2024-01-05 23:19:14 +01:00
cmpxchg.h asm-generic: avoid __generic_cmpxchg_local warnings 2023-04-04 17:58:11 +02:00
codetag.lds.h lib: add allocation tagging support for memory allocation profiling 2024-04-25 20:55:52 -07:00
compat.h asm-generic: compat: fix compat_arg_u64() and compat_arg_u64_dual() 2022-11-01 10:20:11 +11:00
current.h asm-generic: current: Don't include thread-info.h if building asm 2023-08-26 22:38:49 +02:00
delay.h
device.h
div64.h __arch_xprod64(): make __always_inline when optimizing for performance 2024-10-28 21:44:28 +00:00
dma-mapping.h dma-mapping: no need to pass a bus_type into get_arch_dma_ops() 2023-02-15 12:35:20 +01:00
dma.h
early_ioremap.h
emergency-restart.h
error-injection.h docs: fault-injection: add requirements of error injectable functions 2023-02-02 22:50:00 -08:00
exec.h
extable.h
fixmap.h fixmap: Remove unused set_fixmap_offset_io() 2024-07-11 17:41:23 +02:00
flat.h
ftrace.h
futex.h
getorder.h
hardirq.h
hugetlb.h mm: provide mm_struct and address to huge_ptep_get() 2024-07-12 15:52:15 -07:00
hw_irq.h
hyperv-tlfs.h hyperv-fixes for v6.9-rc4 2024-04-11 16:23:56 -07:00
int-ll64.h
io.h New implementation for IO memcpy and IO memset 2024-10-28 21:44:29 +00:00
ioctl.h
iomap.h asm-generic/iomap.h: remove ARCH_HAS_IOREMAP_xx macros 2023-08-18 10:12:32 -07:00
irq_regs.h
irq_work.h
irq.h
irqflags.h
Kbuild move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
kdebug.h
kmap_size.h
kprobes.h
kvm_para.h
kvm_types.h
linkage.h
local64.h locking/generic: Wire up local{,64}_try_cmpxchg() 2023-04-29 09:09:09 +02:00
local.h locking/generic: Wire up local{,64}_try_cmpxchg() 2023-04-29 09:09:09 +02:00
logic_io.h
mcs_spinlock.h
memory_model.h asm-generic: add an optional pfn_valid check to page_to_phys 2024-10-28 21:44:28 +00:00
mm_hooks.h mm: remove arch_unmap() 2024-09-01 20:26:13 -07:00
mmiowb_types.h
mmiowb.h
mmu_context.h
mmu.h
mmzone.h arch, mm: move definition of node_data to generic code 2024-09-03 21:15:28 -07:00
module.h
module.lds.h
mshyperv.h hyperv-fixes for v6.9-rc4 2024-04-11 16:23:56 -07:00
msi.h genirq: Get rid of GENERIC_MSI_IRQ_DOMAIN 2022-11-17 15:15:20 +01:00
nommu_context.h
numa.h arch_numa: switch over to numa_memblks 2024-09-03 21:15:32 -07:00
param.h
parport.h
pci_iomap.h PCI: Stub __pci_ioport_map() for arches that don't support it at all 2022-07-29 12:01:00 -05:00
pci.h asm-generic: Add new pci.h and use it 2022-07-22 17:34:57 -05:00
percpu.h percpu: Fix self-assignment of __old in raw_cpu_generic_try_cmpxchg() 2023-06-08 10:28:39 +02:00
pgalloc.h mm: change inlined allocation helpers to account at the call site 2024-04-25 20:55:59 -07:00
pgtable_uffd.h
pgtable-nop4d.h
pgtable-nopmd.h mm: recover pud_leaf() definitions in nopmd case 2024-03-13 12:12:21 -07:00
pgtable-nopud.h
preempt.h riscv: support PREEMPT_DYNAMIC with static keys 2023-08-31 00:18:34 -07:00
qrwlock_types.h locking/qrwlock: Change "queue rwlock" to "queued rwlock" 2022-05-11 16:27:04 +02:00
qrwlock.h asm-generic changes for 5.19 2022-05-26 10:50:30 -07:00
qspinlock_types.h
qspinlock.h asm-generic: qspinlock: fix queued_spin_value_unlocked() implementation 2023-11-22 09:32:49 -08:00
resource.h
runtime-const.h runtime constants: add default dummy infrastructure 2024-06-19 12:34:34 -07:00
rwonce.h
seccomp.h
sections.h jump_label,module: Don't alloc static_key_mod for __ro_after_init keys 2024-03-22 11:18:16 +01:00
serial.h
set_memory.h
shmparam.h
signal.h asm-generic: Remove empty #ifdef SA_RESTORER 2022-09-10 09:56:53 +02:00
simd.h
softirq_stack.h asm-generic: Conditionally enable do_softirq_own_stack() via Kconfig. 2022-09-05 17:20:55 +02:00
spinlock_types.h asm-generic: ticket-lock: New generic ticket-based spinlock 2022-05-11 11:49:38 -07:00
spinlock.h asm-generic: ticket-lock: Optimize arch_spin_value_unlocked() 2023-09-21 10:17:00 +02:00
statfs.h
string.h
switch_to.h
syscall.h ptrace: Create ptrace_report_syscall_{entry,exit} in ptrace.h 2022-03-10 13:35:08 -06:00
syscalls.h syscalls: mmap(): use unsigned offset type consistently 2024-06-25 15:57:38 +02:00
timex.h
tlb.h mm/mmu_gather: add __tlb_remove_folio_pages() 2024-02-22 15:27:17 -08:00
tlbflush.h
topology.h
trace_clock.h
uaccess.h move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
user.h
vermagic.h
vga.h
video.h arch: Rename fbdev header and source files 2024-05-03 17:07:50 +02:00
vmlinux.lds.h asm-generic updates for 6.12 2024-09-26 11:54:40 -07:00
word-at-a-time.h kernel.h: removed REPEAT_BYTE from kernel.h 2024-02-01 09:47:59 -08:00
xor.h lib/xor: make xor prototypes more friendly to compiler vectorization 2022-02-11 20:39:39 +11:00