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linux/rust/kernel
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Leon Romanovsky eadaa8b255 dma-mapping: introduce new DMA attribute to indicate MMIO memory 
This patch introduces the DMA_ATTR_MMIO attribute to mark DMA buffers
that reside in memory-mapped I/O (MMIO) regions, such as device BARs
exposed through the host bridge, which are accessible for peer-to-peer
(P2P) DMA.

This attribute is especially useful for exporting device memory to other
devices for DMA without CPU involvement, and avoids unnecessary or
potentially detrimental CPU cache maintenance calls.

DMA_ATTR_MMIO is supposed to provide dma_map_resource() functionality
without need to call to special function and perform branching when
processing generic containers like bio_vec by the callers.

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/6f058ec395c5348014860dbc2eed348c17975843.1757423202.git.leonro@nvidia.com
 		2025-09-12 00:08:07 +02:00
..
alloc Alloc & DMA changes for v6.17 2025-07-15 23:42:55 +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 changes for v6.17 2025-08-03 13:49:10 -07:00
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: add missing Markdown code spans 2025-05-25 22:58:35 +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 rust: add `build_error!` to the prelude 2025-01-10 00:19:09 +01:00
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 cred,rust: mark Credential methods inline 2025-03-04 17:07:49 -05:00
device.rs Rust changes for v6.17 2025-08-03 13:49:10 -07:00
device_id.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 dma-mapping: introduce new DMA attribute to indicate MMIO memory 2025-09-12 00:08:07 +02:00
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 rust: file: add Rust abstraction for `struct file` 2024-09-30 13:02:28 +02:00
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 rust: jump_label: skip formatting generated file 2024-11-20 13:32:42 -05:00
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 rust: start using the `#[expect(...)]` attribute 2024-10-07 21:39:57 +02:00
jump_label.rs rust: jump_label: skip formatting generated file 2024-11-20 13:32:42 -05:00
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 rust: add PidNamespace 2024-10-08 15:44:36 +02:00
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 lsm,rust: reword "destroy" -> "release" in SecurityCtx 2025-03-04 15:44:46 -05:00
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 rust: add tracepoint support 2024-11-04 16:21:44 -05:00
transmute.rs rust: kernel: move `FromBytes` and `AsBytes` traits to a new `transmute` module 2024-10-10 00:33:42 +02:00
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