Merge drm/drm-next into drm-intel-gt-next

Need to pull in a67221b5eb8d ("drm/i915/dp: Return min bpc supported by source instead of 0")
in order to fix build breakage on GCC 9.4.0 (from Ubuntu 20.04

Merge drm/drm-next into drm-intel-gt-next

Need to pull in a67221b5eb8d ("drm/i915/dp: Return min bpc supported by source instead of 0")
in order to fix build breakage on GCC 9.4.0 (from Ubuntu 20.04).

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

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Merge drm/drm-next into drm-intel-next

Backmerge to sync with v6.15-rc, xe, and specifically async flip changes
in drm-misc.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge branch 'next' into for-linus

Prepare input updates for 6.16 merge window.

Merge tag 'v6.15-rc6' into next

Sync up with mainline to bring in xpad controller changes.

Merge remote-tracking branch 'drm-misc/drm-misc-next' into msm-next

Merge drm-misc-next to get commit Fixes: fec450ca15af ("drm/display:
hdmi: provide central data authority for ACR params").

Signe

Merge remote-tracking branch 'drm-misc/drm-misc-next' into msm-next

Merge drm-misc-next to get commit Fixes: fec450ca15af ("drm/display:
hdmi: provide central data authority for ACR params").

Signed-off-by: Rob Clark <robdclark@chromium.org>

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Merge drm/drm-next into drm-xe-next

Backmerge to bring in linux 6.15-rc.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Merge drm/drm-next into drm-misc-next

Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.

Signed-off-by: Thomas Zimmermann <tzimmerm

Merge drm/drm-next into drm-misc-next

Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

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Merge tag 'v6.15-rc1' into x86/cpu, to refresh the branch with upstream changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'v6.15-rc1' into x86/mm, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'v6.15-rc1' into x86/asm, to refresh the branch

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge drm/drm-fixes into drm-misc-fixes

Backmerging to get updates from v6.15-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'io_uring-6.15-20250403' of git://git.kernel.dk/linux

Pull more io_uring updates from Jens Axboe:
"Set of fixes/updates for io_uring that should go into this release.

The ublk bits cou

Merge tag 'io_uring-6.15-20250403' of git://git.kernel.dk/linux

Pull more io_uring updates from Jens Axboe:
"Set of fixes/updates for io_uring that should go into this release.

The ublk bits could've gone via either tree - usually I put them in
block, but they got a bit mixed this series with the zero-copy
supported that ended up dipping into both trees.

This contains:

- Fix for sendmsg zc, include in pinned pages accounting like we do
for the other zc types

- Series for ublk fixing request aborting, doing various little
cleanups, fixing some zc issues, and adding queue_rqs support

- Another ublk series doing some code cleanups

- Series cleaning up the io_uring send path, mostly in preparation
for registered buffers

- Series doing little MSG_RING cleanups

- Fix for the newly added zc rx, fixing len being 0 for the last
invocation of the callback

- Add vectored registered buffer support for ublk. With that, then
ublk also supports this feature in the kernel revision where it
could generically introduced for rw/net

- A bunch of selftest additions for ublk. This is the majority of the
diffstat

- Silence a KCSAN data race warning for io-wq

- Various little cleanups and fixes"

* tag 'io_uring-6.15-20250403' of git://git.kernel.dk/linux: (44 commits)
io_uring: always do atomic put from iowq
selftests: ublk: enable zero copy for stripe target
io_uring: support vectored kernel fixed buffer
block: add for_each_mp_bvec()
io_uring: add validate_fixed_range() for validate fixed buffer
selftests: ublk: kublk: fix an error log line
selftests: ublk: kublk: use ioctl-encoded opcodes
io_uring/zcrx: return early from io_zcrx_recv_skb if readlen is 0
io_uring/net: avoid import_ubuf for regvec send
io_uring/rsrc: check size when importing reg buffer
io_uring: cleanup {g,s]etsockopt sqe reading
io_uring: hide caches sqes from drivers
io_uring: make zcrx depend on CONFIG_IO_URING
io_uring: add req flag invariant build assertion
Documentation: ublk: remove dead footnote
selftests: ublk: specify io_cmd_buf pointer type
ublk: specify io_cmd_buf pointer type
io_uring: don't pass ctx to tw add remote helper
io_uring/msg: initialise msg request opcode
io_uring/msg: rename io_double_lock_ctx()
...

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io_uring: make zcrx depend on CONFIG_IO_URING

Reflect in the kconfig that zcrx requires io_uring compiled.

Fixes: 6f377873cb239 ("io_uring/zcrx: add interface queue and refill queue")
Signed-off-by

io_uring: make zcrx depend on CONFIG_IO_URING

Reflect in the kconfig that zcrx requires io_uring compiled.

Fixes: 6f377873cb239 ("io_uring/zcrx: add interface queue and refill queue")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8047135a344e79dbd04ee36a7a69cc260aabc2ca.1743356260.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Merge tag 'for-6.15/io_uring-rx-zc-20250325' of git://git.kernel.dk/linux

Pull io_uring zero-copy receive support from Jens Axboe:
"This adds support for zero-copy receive with io_uring, enabling f

Merge tag 'for-6.15/io_uring-rx-zc-20250325' of git://git.kernel.dk/linux

Pull io_uring zero-copy receive support from Jens Axboe:
"This adds support for zero-copy receive with io_uring, enabling fast
bulk receive of data directly into application memory, rather than
needing to copy the data out of kernel memory.

While this version only supports host memory as that was the initial
target, other memory types are planned as well, with notably GPU
memory coming next.

This work depends on some networking components which were queued up
on the networking side, but have now landed in your tree.

This is the work of Pavel Begunkov and David Wei. From the v14 posting:

'We configure a page pool that a driver uses to fill a hw rx queue
to hand out user pages instead of kernel pages. Any data that ends
up hitting this hw rx queue will thus be dma'd into userspace
memory directly, without needing to be bounced through kernel
memory. 'Reading' data out of a socket instead becomes a
_notification_ mechanism, where the kernel tells userspace where
the data is. The overall approach is similar to the devmem TCP
proposal

This relies on hw header/data split, flow steering and RSS to
ensure packet headers remain in kernel memory and only desired
flows hit a hw rx queue configured for zero copy. Configuring this
is outside of the scope of this patchset.

We share netdev core infra with devmem TCP. The main difference is
that io_uring is used for the uAPI and the lifetime of all objects
are bound to an io_uring instance. Data is 'read' using a new
io_uring request type. When done, data is returned via a new shared
refill queue. A zero copy page pool refills a hw rx queue from this
refill queue directly. Of course, the lifetime of these data
buffers are managed by io_uring rather than the networking stack,
with different refcounting rules.

This patchset is the first step adding basic zero copy support. We
will extend this iteratively with new features e.g. dynamically
allocated zero copy areas, THP support, dmabuf support, improved
copy fallback, general optimisations and more'

In a local setup, I was able to saturate a 200G link with a single CPU
core, and at netdev conf 0x19 earlier this month, Jamal reported
188Gbit of bandwidth using a single core (no HT, including soft-irq).

Safe to say the efficiency is there, as bigger links would be needed
to find the per-core limit, and it's considerably more efficient and
faster than the existing devmem solution"

* tag 'for-6.15/io_uring-rx-zc-20250325' of git://git.kernel.dk/linux:
io_uring/zcrx: add selftest case for recvzc with read limit
io_uring/zcrx: add a read limit to recvzc requests
io_uring: add missing IORING_MAP_OFF_ZCRX_REGION in io_uring_mmap
io_uring: Rename KConfig to Kconfig
io_uring/zcrx: fix leaks on failed registration
io_uring/zcrx: recheck ifq on shutdown
io_uring/zcrx: add selftest
net: add documentation for io_uring zcrx
io_uring/zcrx: add copy fallback
io_uring/zcrx: throttle receive requests
io_uring/zcrx: set pp memory provider for an rx queue
io_uring/zcrx: add io_recvzc request
io_uring/zcrx: dma-map area for the device
io_uring/zcrx: implement zerocopy receive pp memory provider
io_uring/zcrx: grab a net device
io_uring/zcrx: add io_zcrx_area
io_uring/zcrx: add interface queue and refill queue

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Merge branch 'for-6.15/io_uring-rx-zc' into for-6.15/io_uring-reg-vec

* for-6.15/io_uring-rx-zc: (80 commits)
io_uring/zcrx: add selftest case for recvzc with read limit
io_uring/zcrx: add a rea

Merge branch 'for-6.15/io_uring-rx-zc' into for-6.15/io_uring-reg-vec

* for-6.15/io_uring-rx-zc: (80 commits)
io_uring/zcrx: add selftest case for recvzc with read limit
io_uring/zcrx: add a read limit to recvzc requests
io_uring: add missing IORING_MAP_OFF_ZCRX_REGION in io_uring_mmap
io_uring: Rename KConfig to Kconfig
io_uring/zcrx: fix leaks on failed registration
io_uring/zcrx: recheck ifq on shutdown
io_uring/zcrx: add selftest
net: add documentation for io_uring zcrx
io_uring/zcrx: add copy fallback
io_uring/zcrx: throttle receive requests
io_uring/zcrx: set pp memory provider for an rx queue
io_uring/zcrx: add io_recvzc request
io_uring/zcrx: dma-map area for the device
io_uring/zcrx: implement zerocopy receive pp memory provider
io_uring/zcrx: grab a net device
io_uring/zcrx: add io_zcrx_area
io_uring/zcrx: add interface queue and refill queue
net: add helpers for setting a memory provider on an rx queue
net: page_pool: add memory provider helpers
net: prepare for non devmem TCP memory providers
...

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Merge branch 'for-6.15/io_uring-rx-zc' into for-6.15/io_uring-epoll-wait

* for-6.15/io_uring-rx-zc: (77 commits)
io_uring: Rename KConfig to Kconfig
io_uring/zcrx: fix leaks on failed registrati

Merge branch 'for-6.15/io_uring-rx-zc' into for-6.15/io_uring-epoll-wait

* for-6.15/io_uring-rx-zc: (77 commits)
io_uring: Rename KConfig to Kconfig
io_uring/zcrx: fix leaks on failed registration
io_uring/zcrx: recheck ifq on shutdown
io_uring/zcrx: add selftest
net: add documentation for io_uring zcrx
io_uring/zcrx: add copy fallback
io_uring/zcrx: throttle receive requests
io_uring/zcrx: set pp memory provider for an rx queue
io_uring/zcrx: add io_recvzc request
io_uring/zcrx: dma-map area for the device
io_uring/zcrx: implement zerocopy receive pp memory provider
io_uring/zcrx: grab a net device
io_uring/zcrx: add io_zcrx_area
io_uring/zcrx: add interface queue and refill queue
net: add helpers for setting a memory provider on an rx queue
net: page_pool: add memory provider helpers
net: prepare for non devmem TCP memory providers
net: page_pool: add a mp hook to unregister_netdevice*
net: page_pool: add callback for mp info printing
netdev: add io_uring memory provider info
...

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io_uring: Rename KConfig to Kconfig

Kconfig files are traditionally named "Kconfig".

Fixes: 6f377873cb239050 ("io_uring/zcrx: add interface queue and refill queue")
Signed-off-by: Geert Uytterhoeve

io_uring: Rename KConfig to Kconfig

Kconfig files are traditionally named "Kconfig".

Fixes: 6f377873cb239050 ("io_uring/zcrx: add interface queue and refill queue")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/5ae387c1465f54768b51a5a1ca87be7934c4b2ad.1739976387.git.geert+renesas@glider.be
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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