Home
last modified time | relevance | path

Searched refs:unaligned (Results 1 – 25 of 85) sorted by relevance

1234

/linux/Documentation/core-api/
H A Dunaligned-memory-access.rst15 unaligned accesses, why you need to write code that doesn't cause them,
19 The definition of an unaligned access
25 reading 4 bytes of data from address 0x10005 would be an unaligned memory
52 Why unaligned access is bad
55 The effects of performing an unaligned memory access vary from architecture
59 - Some architectures are able to perform unaligned memory accesses
61 - Some architectures raise processor exceptions when unaligned accesses
62 happen. The exception handler is able to correct the unaligned access,
64 - Some architectures raise processor exceptions when unaligned accesses
66 unaligned access to be corrected.
[all …]
/linux/Documentation/arch/arm/
H A Dmem_alignment.rst14 unaligned memory access in general. If those access are predictable, you
15 are better to use the macros provided by include/linux/unaligned.h. The
20 trap to SIGBUS any code performing unaligned access (good for debugging bad
27 real bad - it changes the behaviour of all unaligned instructions in user
36 0 A user process performing an unaligned memory access
42 performing the unaligned access. This is of course
47 performing the unaligned access.
59 information on unaligned access occurrences plus the current mode of
/linux/net/xdp/
H A Dxsk_buff_pool.c56 bool unaligned = umem->flags & XDP_UMEM_UNALIGNED_CHUNK_FLAG;
61 entries = unaligned ? umem->chunks : 0; in xp_create_and_assign_umem()
81 pool->unaligned = unaligned; in xp_create_and_assign_umem()
105 if (pool->unaligned) in xp_create_and_assign_umem()
415 if (!pool->unaligned) { in xp_check_dma_contiguity()
471 if (pool->unaligned) in xp_dma_map()
510 if (pool->unaligned) { in xp_check_aligned()
537 ok = pool->unaligned ? xp_check_unaligned(pool, &addr) : in __xp_alloc()
597 ok = pool->unaligned in xp_alloc_new_from_fq()
60 bool unaligned = umem->flags & XDP_UMEM_UNALIGNED_CHUNK_FLAG; xp_create_and_assign_umem() local
[all...]
/linux/arch/alpha/kernel/
H A Dtraps.c369 } unaligned[2]; variable
385 unaligned[0].count++; in do_entUna()
386 unaligned[0].va = (unsigned long) va; in do_entUna()
387 unaligned[0].pc = pc; in do_entUna()
694 ++unaligned[1].count; in do_entUnaUser()
695 unaligned[1].va = (unsigned long)va; in do_entUnaUser()
696 unaligned[1].pc = regs->pc - 4; in do_entUnaUser()
H A Dsetup.c1049 } unaligned[2]; in show_cpuinfo() local
1112 unaligned[0].count, unaligned[0].pc, unaligned[0].va, in show_cpuinfo()
1113 unaligned[1].count, unaligned[1].pc, unaligned[1].va, in show_cpuinfo()
/linux/Documentation/devicetree/bindings/pci/
H A Dti-pci.txt36 - ti,syscon-unaligned-access: phandle to the syscon DT node. The 1st argument
39 for setting the bit to enable unaligned
54 - ti,syscon-unaligned-access: phandle to the syscon DT node. The 1st argument
57 for setting the bit to enable unaligned
/linux/drivers/s390/cio/
H A Dvfio_ccw_cp.c92 struct vfio_device *vdev, int pa_nr, bool unaligned) in page_array_unpin() argument
102 !unaligned) { in page_array_unpin()
131 static int page_array_pin(struct page_array *pa, struct vfio_device *vdev, bool unaligned) in page_array_pin() argument
142 !unaligned) { in page_array_pin()
164 page_array_unpin(pa, vdev, pinned, unaligned); in page_array_pin()
169 static void page_array_unpin_free(struct page_array *pa, struct vfio_device *vdev, bool unaligned) in page_array_unpin_free() argument
171 page_array_unpin(pa, vdev, pa->pa_nr, unaligned); in page_array_unpin_free()
/linux/arch/riscv/
H A DKconfig948 This determines the level of support for unaligned accesses. This
954 bool "Probe for hardware unaligned access support"
958 speed of unaligned accesses. This probing will dynamically determine
959 the speed of unaligned accesses on the underlying system. If unaligned
961 system, the kernel will emulate the unaligned accesses to preserve the
965 bool "Emulate unaligned access where system support is missing"
968 If unaligned memory accesses trap into the kernel as they are not
969 supported by the system, the kernel will emulate the unaligned
971 unaligned accesses, the unaligned accesses are assumed to be slow.
974 bool "Assume the system supports slow unaligned memory accesses"
[all …]
/linux/include/net/
H A Dxsk_buff_pool.h85 bool unaligned; member
234 if (xskb->pool->unaligned) in xp_get_handle()
244 if (!pool->unaligned) in xp_get_handle()
/linux/Documentation/translations/zh_CN/core-api/
H A Dunaligned-memory-access.rst3 :Original: Documentation/core-api/unaligned-memory-access.rst
178 避免非对齐访问的最简单方法是使用<linux/unaligned.h>头文件提供的get_unaligned()和
/linux/Documentation/dev-tools/
H A Dubsan.rst68 Detection of unaligned accesses controlled through the separate option -
70 unaligned accesses (CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y). One could
/linux/arch/parisc/boot/compressed/
H A Dvmlinux.scr7 output_len = . - 4; /* can be at unaligned address */
/linux/arch/arc/lib/
H A Dmemcpy-archs.S94 ;;; CASE 1: The source is unaligned, off by 1
139 ;;; CASE 2: The source is unaligned, off by 2
180 ;;; CASE 3: The source is unaligned, off by 3
H A DMakefile12 lib-$(CONFIG_ISA_ARCV2) +=memcpy-archs-unaligned.o
H A Dstrchr-700.S41 breq r7,0,.Loop ; For speed, we want this branch to be unaligned.
45 breq r12,0,.Loop ; For speed, we want this branch to be unaligned.
/linux/arch/loongarch/lib/
H A DMakefile7 clear_user.o copy_user.o csum.o dump_tlb.o unaligned.o
/linux/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/
H A Dpool.c75 xsk->unaligned = pool->unaligned; in mlx5e_build_xsk_param()
/linux/drivers/spi/
H A Dspi-imx.c348 int unaligned; in spi_imx_buf_rx_swap() local
351 unaligned = spi_imx->remainder % 4; in spi_imx_buf_rx_swap()
353 if (!unaligned) { in spi_imx_buf_rx_swap()
365 while (unaligned--) { in spi_imx_buf_rx_swap()
367 *(u8 *)spi_imx->rx_buf = (val >> (8 * unaligned)) & 0xff; in spi_imx_buf_rx_swap()
400 int unaligned; in spi_imx_buf_tx_swap() local
403 unaligned = spi_imx->count % 4; in spi_imx_buf_tx_swap()
405 if (!unaligned) { in spi_imx_buf_tx_swap()
415 while (unaligned--) { in spi_imx_buf_tx_swap()
417 val |= *(u8 *)spi_imx->tx_buf << (8 * unaligned); in spi_imx_buf_tx_swap()
/linux/arch/riscv/kernel/
H A DMakefile78 obj-$(CONFIG_RISCV_PROBE_UNALIGNED_ACCESS) += copy-unaligned.o
79 obj-$(CONFIG_RISCV_PROBE_VECTOR_UNALIGNED_ACCESS) += vec-copy-unaligned.o
/linux/arch/loongarch/kernel/
H A Dmodule.c216 goto unaligned; in apply_r_larch_sop_imm_field()
231 goto unaligned; in apply_r_larch_sop_imm_field()
242 goto unaligned; in apply_r_larch_sop_imm_field()
268 unaligned: in apply_r_larch_sop_imm_field()
/linux/arch/powerpc/include/asm/
H A Demulated_ops.h35 struct ppc_emulated_entry unaligned; member
/linux/arch/arc/kernel/
H A DMakefile18 obj-$(CONFIG_ARC_EMUL_UNALIGNED) += unaligned.o
/linux/Documentation/translations/zh_CN/process/
H A Dindex.rst87 ../core-api/unaligned-memory-access
/linux/lib/crypto/arm/
H A Dsha1-armv4-large.S93 ldr r9,[r1],#4 @ handles unaligned
118 ldr r9,[r1],#4 @ handles unaligned
143 ldr r9,[r1],#4 @ handles unaligned
168 ldr r9,[r1],#4 @ handles unaligned
193 ldr r9,[r1],#4 @ handles unaligned
221 ldr r9,[r1],#4 @ handles unaligned
/linux/drivers/net/ethernet/mellanox/mlx5/core/en/
H A Dparams.c49 bool unaligned = xsk ? xsk->unaligned : false; in mlx5e_mpwrq_umr_mode() local
80 if (unaligned) in mlx5e_mpwrq_umr_mode()
559 mlx5e_mpwrq_max_log_rq_pkts(mdev, page_shift, xsk->unaligned)); in mlx5e_mpwrq_validate_xsk()
1150 .unaligned = false, in mlx5e_build_icosq_log_wq_sz()
1158 xsk.unaligned = true; in mlx5e_build_icosq_log_wq_sz()

1234