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David Gow 54bf0af908 drm/i915: Allow evicting to use the requested placement 
In commit a78a8da51b ("drm/ttm: replace busy placement with flags v6"),
the old system of having a separate placement list (for placements
which should be used without eviction) and a 'busy' placement list (for
placements which should be attempted if eviction is required) was
replaced with a new one where placements could be marked 'FALLBACK' (to
be attempted if eviction is required) or 'DESIRED' (to be attempted
first, but not if eviction is required).

i915 had always included the requested placement in the list of
'busy' placements: i.e., the placement could be used either if eviction
is required or not. But when the new system was put in place, the
requested (first) placement was marked 'DESIRED', so would never be used
if eviction became necessary. While a bug in the original commit
prevented this flag from working, when this was fixed in
4a0e7b3c ("drm/i915: fix applying placement flag"), it caused long hangs
on DG2 systems with small BAR.

Don't mark the requested placement DESIRED (or FALLBACK), allowing it to
be used in both situations. This matches the old behaviour, and resolves
the hangs.

Thanks to Justin Brewer for bisecting the issue.

Fixes: a78a8da51b ("drm/ttm: replace busy placement with flags v6")
Fixes: 4a0e7b3c37 ("drm/i915: fix applying placement flag")
Link: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11255
Signed-off-by: David Gow <david@davidgow.net>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240804091851.122186-2-david@davidgow.net
2024-08-06 14:13:16 +01:00
arch Linux 6.9-rc6 2024-04-29 20:22:39 +02:00
block vfs-6.9-rc6.fixes 2024-04-26 11:01:28 -07:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto This push fixes a regression that broke iwd as well as a divide by 2024-03-25 10:48:23 -07:00
Documentation Merge tag 'drm-msm-next-2024-05-07' of https://gitlab.freedesktop.org/drm/msm into drm-next 2024-05-10 10:22:59 +10:00
drivers drm/i915: Allow evicting to use the requested placement 2024-08-06 14:13:16 +01:00
fs three smb3 client fixes, all also for stable 2024-04-27 11:35:40 -07:00
include drm/i915: Support replaying GPU hangs with captured context image 2024-05-16 07:37:05 +00:00
init Rust fixes for v6.9 2024-04-27 12:11:55 -07:00
io_uring io_uring/net: restore msg_control on sendzc retry 2024-04-08 21:48:41 -06:00
ipc sysctl changes for v6.9-rc1 2024-03-18 14:59:13 -07:00
kernel Misc fixes: 2024-04-28 12:11:26 -07:00
lib 11 hotfixes. 8 are cc:stable and the remaining 3 (nice ratio!) address 2024-04-26 13:48:03 -07:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm mm/hugetlb: fix DEBUG_LOCKS_WARN_ON(1) when dissolve_free_hugetlb_folio() 2024-04-25 10:07:27 -07:00
net Including fixes from netfilter, wireless and bluetooth. 2024-04-25 11:19:38 -07:00
rust rust: remove params from module macro example 2024-04-25 17:34:33 +02:00
samples Tracing updates for 6.9: 2024-03-18 15:11:44 -07:00
scripts Rust fixes for v6.9 2024-04-27 12:11:55 -07:00
security security: Place security_path_post_mknod() where the original IMA call was 2024-04-03 10:21:32 -07:00
sound ALSA: seq: ump: Fix conversion from MIDI2 to MIDI1 UMP messages 2024-04-19 12:07:14 +02:00
tools RISC-V Fixes for 6.9-rc6 2024-04-27 12:02:55 -07:00
usr Kbuild updates for v6.8 2024-01-18 17:57:07 -08:00
virt KVM: Drop unused @may_block param from gfn_to_pfn_cache_invalidate_start() 2024-04-11 12:58:53 -07:00
.clang-format clang-format: Update with v6.7-rc4's for_each macro list 2023-12-08 23:54:38 +01:00
.cocciconfig
.editorconfig Add .editorconfig file for basic formatting 2023-12-28 16:22:47 +09:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: create a list of all built DTB files 2024-02-19 18:20:39 +09:00
.mailmap Including fixes from netfilter, wireless and bluetooth. 2024-04-25 11:19:38 -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: Drop Gustavo Pimentel as PCI DWC Maintainer 2024-03-27 13:41:02 -05:00
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 Merge tag 'drm-msm-next-2024-05-07' of https://gitlab.freedesktop.org/drm/msm into drm-next 2024-05-10 10:22:59 +10:00
Makefile Linux 6.9-rc6 2024-04-28 13:47:24 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 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.