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bb9749f32a
linux/rust/kernel
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Alice Ryhl bb9749f32a rust: alloc: take the allocator into account for FOREIGN_ALIGN 
When converting a Box<T> into a void pointer, the allocator might
guarantee a higher alignment than the type itself does, and in that case
it is guaranteed that the void pointer has that higher alignment.

This is quite useful when combined with the XArray, which you can only
create using a ForeignOwnable whose FOREIGN_ALIGN is at least 4. This
means that you can now always use a Box<T> with the XArray no matter the
alignment of T.

Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250811-align-min-allocator-v2-2-3386cc94f4fc@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-08-15 20:55:16 +02:00
..
alloc rust: alloc: take the allocator into account for FOREIGN_ALIGN 2025-08-15 20:55:16 +02:00
block pin-init changes for v6.17 2025-07-13 23:05:14 +02:00
device rust: device: implement FwNode::is_of_node() 2025-06-25 18:10:12 +02:00
drm Rust changes for v6.17 2025-08-03 13:49:10 -07:00
fs rust: enable clippy::ref_as_ptr lint 2025-06-22 23:09:32 +02:00
io rust: io: fix broken intra-doc links to platform::Device 2025-07-22 11:08:59 +02:00
list rust: list: remove nonexistent generic parameter in link 2025-07-20 19:29:19 +02:00
mm rust: enable clippy::as_underscore lint 2025-06-22 23:09:17 +02:00
net Rust changes for v6.17 2025-08-03 13:49:10 -07:00
sync rust: alloc: take the allocator into account for FOREIGN_ALIGN 2025-08-15 20:55:16 +02:00
time rust: time: Pass correct timer mode ID to hrtimer_start_range_ns 2025-07-17 00:55:35 +02:00
.gitignore rust: Add warn_on macro 2025-07-23 02:05:58 +02:00
acpi.rs rust: device_id: split out index support into a separate trait 2025-07-16 23:38:21 +02:00
alloc.rs rust: alloc: specify the minimum alignment of each allocator 2025-08-15 20:55:16 +02:00
auxiliary.rs rust: device_id: split out index support into a separate trait 2025-07-16 23:38:21 +02:00
bits.rs rust: bits: add support for bits/genmask macros 2025-07-19 23:18:18 +02:00
block.rs
bug.rs rust: Add warn_on macro 2025-07-23 02:05:58 +02:00
build_assert.rs
clk.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
configfs.rs rust: types: rename Opaque::raw_get to cast_into 2025-07-15 22:26:11 +02:00
cpu.rs device: rust: rename Device::as_ref() to Device::from_raw() 2025-07-16 23:37:49 +02:00
cpufreq.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
cpumask.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
cred.rs
device_id.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
device.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
devres.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
dma.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
driver.rs rust: device_id: split out index support into a separate trait 2025-07-16 23:38:21 +02:00
error.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
faux.rs device: rust: rename Device::as_ref() to Device::from_raw() 2025-07-16 23:37:49 +02:00
firmware.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
fmt.rs rust: kernel: add fmt module 2025-07-21 01:16:35 +02:00
fs.rs
generated_arch_reachable_asm.rs.S rust: Add warn_on macro 2025-07-23 02:05:58 +02:00
generated_arch_static_branch_asm.rs.S
generated_arch_warn_asm.rs.S rust: Add warn_on macro 2025-07-23 02:05:58 +02:00
init.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
io.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
ioctl.rs
jump_label.rs
kunit.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
lib.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
list.rs rust: list: remove OFFSET constants 2025-07-19 23:18:18 +02:00
miscdevice.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
mm.rs mm: rust: make CONFIG_MMU ifdefs more narrow 2025-05-31 22:46:12 -07:00
net.rs
of.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
opp.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
page.rs rust: page: optimize rust symbol generation for Page 2025-05-12 00:20:25 +02:00
pci.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
pid_namespace.rs
platform.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
prelude.rs rust: kernel: remove fmt!, fix clippy::uninlined-format-args 2025-07-21 01:15:51 +02:00
print.rs rust: use kernel::{fmt,prelude::fmt!} 2025-07-21 01:16:35 +02:00
rbtree.rs rust: rbtree: simplify finding current in remove_current 2025-07-14 23:53:35 +02:00
regulator.rs rust: regulator: add a bare minimum regulator abstraction 2025-07-15 15:07:40 +01:00
revocable.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
security.rs
seq_file.rs rust: enable clippy::ptr_as_ptr lint 2025-06-22 23:08:42 +02:00
sizes.rs rust: sizes: add constants up to SZ_2G 2025-06-23 18:12:30 +02:00
static_assert.rs rust: use absolute paths in macros referencing core and kernel 2025-05-23 00:12:14 +02:00
std_vendor.rs rust: convert raw URLs to Markdown autolinks in comments 2025-05-12 00:20:25 +02:00
str.rs rust: kernel: use core::ffi::CStr method names 2025-07-21 01:16:36 +02:00
sync.rs rust: kernel: move ARef and AlwaysRefCounted to sync::aref 2025-07-22 13:52:14 +02:00
task.rs rust: task: Add Rust version of might_sleep() 2025-06-24 15:53:50 -07:00
time.rs rust: time: Add wrapper for fsleep() function 2025-06-30 13:22:05 +02:00
tracepoint.rs
transmute.rs
types.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
uaccess.rs rust: uaccess: use newtype for user pointers 2025-07-14 23:52:45 +02:00
workqueue.rs workqueue: rust: add delayed work items 2025-07-15 22:54:52 +02:00
xarray.rs rust: types: add FOREIGN_ALIGN to ForeignOwnable 2025-07-14 23:55:24 +02:00