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Mikulas Patocka b22b54f247 dm-verity, dm-crypt: align "struct bvec_iter" correctly 
[ Upstream commit 787f1b2800 ]

"struct bvec_iter" is defined with the __packed attribute, so it is
aligned on a single byte. On X86 (and on other architectures that support
unaligned addresses in hardware), "struct bvec_iter" is accessed using the
8-byte and 4-byte memory instructions, however these instructions are less
efficient if they operate on unaligned addresses.

(on RISC machines that don't have unaligned access in hardware, GCC
generates byte-by-byte accesses that are very inefficient - see [1])

This commit reorders the entries in "struct dm_verity_io" and "struct
convert_context", so that "struct bvec_iter" is aligned on 8 bytes.

[1] https://lore.kernel.org/all/ZcLuWUNRZadJr0tQ@fedora/T/

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-03-26 18:20:26 -04:00
Documentation x86/rfds: Mitigate Register File Data Sampling (RFDS) 2024-03-15 10:48:21 -04:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
arch parisc/ftrace: add missing CONFIG_DYNAMIC_FTRACE check 2024-03-26 18:20:25 -04:00
block block: sed-opal: handle empty atoms when parsing response 2024-03-26 18:20:26 -04:00
certs certs: Fix build error when PKCS#11 URI contains semicolon 2023-02-09 11:28:11 +01:00
crypto crypto: api - Disallow identical driver names 2024-01-31 16:16:58 -08:00
drivers dm-verity, dm-crypt: align "struct bvec_iter" correctly 2024-03-26 18:20:26 -04:00
fs nfsd: Fix creation time serialization order 2024-03-26 18:20:24 -04:00
include RDMA/mlx5: Fix fortify source warning while accessing Eth segment 2024-03-26 18:20:25 -04:00
init update workarounds for gcc "asm goto" issue 2024-02-23 09:12:28 +01:00
io_uring io_uring: drop any code related to SCM_RIGHTS 2024-03-26 18:20:22 -04:00
ipc ipc: fix memory leak in init_mqueue_fs() 2022-12-31 13:32:01 +01:00
kernel getrusage: use sig->stats_lock rather than lock_task_sighand() 2024-03-15 10:48:22 -04:00
lib netlink: add nla be16/32 types to minlen array 2024-03-06 14:45:06 +00:00
mm readahead: avoid multiple marked readahead pages 2024-03-15 10:48:19 -04:00
net net/iucv: fix the allocation size of iucv_path_table array 2024-03-26 18:20:25 -04:00
rust rust: allocator: Prevent mis-aligned allocation 2023-08-11 12:08:18 +02:00
samples work around gcc bugs with 'asm goto' with outputs 2024-02-23 09:12:28 +01:00
scripts gen_compile_commands: fix invalid escape sequence warning 2024-03-26 18:20:25 -04:00
security landlock: Fix asymmetric private inodes referring 2024-03-06 14:45:10 +00:00
sound ASoC: amd: yc: Fix non-functional mic on Lenovo 82UU 2024-03-26 18:20:24 -04:00
tools selftests: tls: use exact comparison in recv_partial 2024-03-26 18:20:24 -04:00
usr usr/gen_init_cpio.c: remove unnecessary -1 values from int file 2022-10-03 14:21:44 -07:00
virt kvm/vfio: ensure kvg instance stays around in kvm_vfio_group_add() 2023-09-13 09:42:46 +02:00
.clang-format inet: ping: use hlist_nulls rcu iterator during lookup 2022-12-01 12:42:46 +01:00
.cocciconfig
…
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes
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.gitignore Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
.mailmap 9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address 2022-12-10 17:10:52 -08:00
.rustfmt.toml rust: add `.rustfmt.toml` 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove Michal Marek from Kbuild maintainers 2022-11-16 14:53:00 +09:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS trace: Relocate event helper files 2024-03-06 14:45:17 +00:00
Makefile Linux 6.1.82 2024-03-15 14:27:50 -04:00
README
…

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.