| /Linux-v5.15/Documentation/core-api/ |
| D | unaligned-memory-access.rst | 15 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-v5.15/Documentation/arm/ |
| D | mem_alignment.rst | 14 unaligned memory access in general. If those access are predictable, you
15 are better to use the macros provided by include/asm/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-v5.15/arch/alpha/kernel/ |
| D | traps.c | 429 } unaligned[2]; variable
445 unaligned[0].count++; in do_entUna()
446 unaligned[0].va = (unsigned long) va; in do_entUna()
447 unaligned[0].pc = pc; in do_entUna()
754 ++unaligned[1].count; in do_entUnaUser()
755 unaligned[1].va = (unsigned long)va; in do_entUnaUser()
756 unaligned[1].pc = regs->pc - 4; in do_entUnaUser()
|
| D | setup.c | 1133 } unaligned[2]; in show_cpuinfo() local
1196 unaligned[0].count, unaligned[0].pc, unaligned[0].va, in show_cpuinfo()
1197 unaligned[1].count, unaligned[1].pc, unaligned[1].va, in show_cpuinfo()
|
| /Linux-v5.15/Documentation/devicetree/bindings/pci/ |
| D | ti-pci.txt | 36 - 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-v5.15/net/xdp/ |
| D | xsk_buff_pool.c | 66 pool->unaligned = umem->flags & XDP_UMEM_UNALIGNED_CHUNK_FLAG; in xp_create_and_assign_umem()
407 if (pool->unaligned) in xp_dma_map()
460 ok = pool->unaligned ? xp_check_unaligned(pool, &addr) : in __xp_alloc()
527 addr = pool->unaligned ? xp_unaligned_add_offset_to_addr(addr) : addr; in xp_raw_get_data()
534 addr = pool->unaligned ? xp_unaligned_add_offset_to_addr(addr) : addr; in xp_raw_get_dma()
|
| /Linux-v5.15/arch/parisc/boot/compressed/ |
| D | vmlinux.scr | 7 output_len = . - 4; /* can be at unaligned address */
|
| /Linux-v5.15/include/net/ |
| D | xsk_buff_pool.h | 26 bool unaligned; member
74 bool unaligned; member
|
| /Linux-v5.15/arch/arc/lib/ |
| D | Makefile | 12 lib-$(CONFIG_ISA_ARCV2) +=memcpy-archs-unaligned.o
|
| D | memcpy-archs.S | 94 ;;; CASE 1: The source is unaligned, off by 1
139 ;;; CASE 2: The source is unaligned, off by 2
180 ;;; CASE 3: The source is unaligned, off by 3
|
| D | strchr-700.S | 41 breq r7,0,.Loop ; For speed, we want this branch to be unaligned.
45 breq r12,0,.Loop ; For speed, we want this branch to be unaligned.
|
| /Linux-v5.15/Documentation/dev-tools/ |
| D | ubsan.rst | 78 Detection of unaligned accesses controlled through the separate option -
80 unaligned accesses (CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y). One could
|
| /Linux-v5.15/drivers/spi/ |
| D | spi-imx.c | 313 int unaligned; in spi_imx_buf_rx_swap() local
316 unaligned = spi_imx->remainder % 4; in spi_imx_buf_rx_swap()
318 if (!unaligned) { in spi_imx_buf_rx_swap()
330 while (unaligned--) { in spi_imx_buf_rx_swap()
332 *(u8 *)spi_imx->rx_buf = (val >> (8 * unaligned)) & 0xff; in spi_imx_buf_rx_swap()
365 int unaligned; in spi_imx_buf_tx_swap() local
368 unaligned = spi_imx->count % 4; in spi_imx_buf_tx_swap()
370 if (!unaligned) { in spi_imx_buf_tx_swap()
380 while (unaligned--) { in spi_imx_buf_tx_swap()
382 val |= *(u8 *)spi_imx->tx_buf << (8 * unaligned); in spi_imx_buf_tx_swap()
|
| /Linux-v5.15/arch/powerpc/include/asm/ |
| D | emulated_ops.h | 35 struct ppc_emulated_entry unaligned; member
|
| /Linux-v5.15/arch/arc/kernel/ |
| D | Makefile | 16 obj-$(CONFIG_ARC_EMUL_UNALIGNED) += unaligned.o
|
| /Linux-v5.15/Documentation/translations/zh_CN/core-api/ |
| D | index.rst | 107 unaligned-memory-access
|
| /Linux-v5.15/drivers/net/ethernet/broadcom/ |
| D | bgmac.c | 646 ring->unaligned = bgmac_dma_unaligned(bgmac, ring, in bgmac_dma_alloc()
648 if (ring->unaligned) in bgmac_dma_alloc()
671 ring->unaligned = bgmac_dma_unaligned(bgmac, ring, in bgmac_dma_alloc()
673 if (ring->unaligned) in bgmac_dma_alloc()
694 if (!ring->unaligned) in bgmac_dma_init()
700 if (ring->unaligned) in bgmac_dma_init()
712 if (!ring->unaligned) in bgmac_dma_init()
718 if (ring->unaligned) in bgmac_dma_init()
|
| /Linux-v5.15/arch/parisc/kernel/ |
| D | Makefile | 11 signal.o hpmc.o real2.o parisc_ksyms.o unaligned.o \
|
| /Linux-v5.15/arch/arm/crypto/ |
| D | sha1-armv4-large.S | 93 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-v5.15/arch/ia64/kernel/ |
| D | Makefile | 14 salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
|
| /Linux-v5.15/arch/nds32/ |
| D | Kconfig.cpu | 136 bool "Kernel support unaligned access handling by sw"
148 bool "Kernel support unaligned access handling by hw"
153 unaligned memory locations without generating the Data Alignment
|
| /Linux-v5.15/Documentation/process/ |
| D | index.rst | 64 ../core-api/unaligned-memory-access
|
| /Linux-v5.15/arch/mips/kernel/ |
| D | kprobes.c | 203 goto unaligned; in evaluate_branch_instruction()
221 unaligned: in evaluate_branch_instruction()
|
| /Linux-v5.15/arch/powerpc/boot/dts/ |
| D | o2d.dtsi | 88 no-unaligned-direct-access;
|
| /Linux-v5.15/crypto/ |
| D | ahash.c | 52 unsigned int unaligned = alignmask + 1 - (offset & alignmask); in hash_walk_next() local
54 if (nbytes > unaligned) in hash_walk_next()
55 nbytes = unaligned; in hash_walk_next()
|
