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David (Ming Qiang) Wu 0ef2803173 drm/amdgpu/vcn1: read back register after written
V3: drop changes where readbacks have implemented. This patch set
    is to add readbacks only.

V2: use common register UVD_STATUS for readback (standard PCI MMIO
    behavior, i.e. readback post all writes to let the writes hit
    the hardware)
    add readback in ..._stop() for more coverage.

Similar to the changes made for VCN v4.0.5 where readback to post the
writes to avoid race with the doorbell, the addition of register
readback support in other VCN versions is intended to prevent potential
race conditions, even though such issues have not been observed yet.
This change ensures consistency across different VCN variants and helps
avoid similar issues. The overhead introduced is negligible.

Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: David (Ming Qiang) Wu <David.Wu3@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-05-29 10:55:39 -04:00
arch Merge tag 'drm-msm-next-2025-05-16' of https://gitlab.freedesktop.org/drm/msm into drm-next 2025-05-19 11:05:58 +10:00
block block-6.15-20250424 2025-04-25 11:34:39 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: scompress - increment scomp_scratch_users when already allocated 2025-04-25 10:33:30 +08:00
Documentation Nova changes for v6.16 2025-05-21 05:49:31 +10:00
drivers drm/amdgpu/vcn1: read back register after written 2025-05-29 10:55:39 -04:00
fs cifs and smb3 client fixes 2025-05-02 14:37:16 -07:00
include Nova changes for v6.16 2025-05-21 05:49:31 +10:00
init Kconfig: switch CONFIG_SYSFS_SYCALL default to n 2025-04-15 10:28:35 +02:00
io_uring io_uring/fdinfo: annotate racy sq/cq head/tail reads 2025-04-30 07:17:17 -06:00
ipc treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
kernel tracing updates for v6.15 2025-05-04 10:15:42 -07:00
lib Merge drm/drm-next into drm-misc-next 2025-05-06 09:09:49 +02:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm slab fix for 6.15-rc5 2025-05-02 08:50:10 -07:00
net Happy May Day. 2025-05-01 10:37:49 -07:00
rust Nova changes for v6.16 2025-05-21 05:49:31 +10:00
samples Nova changes for v6.16 2025-05-21 05:49:31 +10:00
scripts checkpatch: remove %p4cn 2025-05-06 11:33:49 -04:00
security Landlock fix for v6.15-rc4 2025-04-24 12:59:05 -07:00
sound ASoC: Fixes for v6.15 2025-05-01 10:22:20 +02:00
tools perf tools fixes for v6.15-rc5 2025-05-04 12:57:18 -07:00
usr kbuild: hdrcheck: fix cross build with clang 2025-03-05 04:06:45 +09:00
virt ARM: 2025-04-08 13:47:55 -07:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: give Clippy the minimum supported Rust version 2025-01-10 00:17:25 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: Create intermediate vmlinux build with relocations preserved 2025-03-17 00:29:50 +09:00
.mailmap sound fixes for 6.15-rc3 2025-04-17 10:14:51 -07:00
.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: update SLAB ALLOCATOR maintainers 2025-04-17 20:10:06 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS Nova changes for v6.16 2025-05-21 05:49:31 +10:00
Makefile Linux 6.15-rc5 2025-05-04 13:55:04 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 reStructuredText 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.