| Age | Commit message (Collapse) | Author |
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Move several helpers to header as preparation for
the subsequent stack liveness patches.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260403024422.87231-6-alexei.starovoitov@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add two passes before the main verifier pass:
bpf_compute_const_regs() is a forward dataflow analysis that tracks
register values in R0-R9 across the program using fixed-point
iteration in reverse postorder. Each register is tracked with
a six-state lattice:
UNVISITED -> CONST(val) / MAP_PTR(map_index) /
MAP_VALUE(map_index, offset) / SUBPROG(num) -> UNKNOWN
At merge points, if two paths produce the same state and value for
a register, it stays; otherwise it becomes UNKNOWN.
The analysis handles:
- MOV, ADD, SUB, AND with immediate or register operands
- LD_IMM64 for plain constants, map FDs, map values, and subprogs
- LDX from read-only maps: constant-folds the load by reading the
map value directly via bpf_map_direct_read()
Results that fit in 32 bits are stored per-instruction in
insn_aux_data and bitmasks.
bpf_prune_dead_branches() uses the computed constants to evaluate
conditional branches. When both operands of a conditional jump are
known constants, the branch outcome is determined statically and the
instruction is rewritten to an unconditional jump.
The CFG postorder is then recomputed to reflect new control flow.
This eliminates dead edges so that subsequent liveness analysis
doesn't propagate through dead code.
Also add runtime sanity check to validate that precomputed
constants match the verifier's tracked state.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260403024422.87231-5-alexei.starovoitov@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a pass that sorts subprogs in topological order so that iterating
subprog_topo_order[] walks leaf subprogs first, then their callers.
This is computed as a DFS post-order traversal of the CFG.
The pass runs after check_cfg() to ensure the CFG has been validated
before traversing and after postorder has been computed to avoid
walking dead code.
Reviewed-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260403024422.87231-3-alexei.starovoitov@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Cross-merge BPF and other fixes after downstream PR.
Minor conflict in kernel/bpf/verifier.c
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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svc_rqst_replace_page() releases displaced pages through a
per-rqst folio batch, but exposes the add-or-flush sequence
directly. svc_tcp_restore_pages() releases displaced pages
individually with put_page().
Introduce svc_rqst_page_release() to encapsulate the
batched release mechanism. Convert svc_rqst_replace_page()
and svc_tcp_restore_pages() to use it. The latter now
benefits from the same batched release that
svc_rqst_replace_page() already uses.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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return-migration
As we add functionality to proxy execution, we may migrate a
donor task to a runqueue where it can't run due to cpu affinity.
Thus, we must be careful to ensure we return-migrate the task
back to a cpu in its cpumask when it becomes unblocked.
Peter helpfully provided the following example with pictures:
"Suppose we have a ww_mutex cycle:
,-+-* Mutex-1 <-.
Task-A ---' | | ,-- Task-B
`-> Mutex-2 *-+-'
Where Task-A holds Mutex-1 and tries to acquire Mutex-2, and
where Task-B holds Mutex-2 and tries to acquire Mutex-1.
Then the blocked_on->owner chain will go in circles.
Task-A -> Mutex-2
^ |
| v
Mutex-1 <- Task-B
We need two things:
- find_proxy_task() to stop iterating the circle;
- the woken task to 'unblock' and run, such that it can
back-off and re-try the transaction.
Now, the current code [without this patch] does:
__clear_task_blocked_on();
wake_q_add();
And surely clearing ->blocked_on is sufficient to break the
cycle.
Suppose it is Task-B that is made to back-off, then we have:
Task-A -> Mutex-2 -> Task-B (no further blocked_on)
and it would attempt to run Task-B. Or worse, it could directly
pick Task-B and run it, without ever getting into
find_proxy_task().
Now, here is a problem because Task-B might not be runnable on
the CPU it is currently on; and because !task_is_blocked() we
don't get into the proxy paths, so nobody is going to fix this
up.
Ideally we would have dequeued Task-B alongside of clearing
->blocked_on, but alas, [the lock ordering prevents us from
getting the task_rq_lock() and] spoils things."
Thus we need more than just a binary concept of the task being
blocked on a mutex or not.
So allow setting blocked_on to PROXY_WAKING as a special value
which specifies the task is no longer blocked, but needs to
be evaluated for return migration *before* it can be run.
This will then be used in a later patch to handle proxy
return-migration.
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>
Link: https://patch.msgid.link/20260324191337.1841376-7-jstultz@google.com
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So far, we have been able to utilize the mutex::wait_lock
for serializing the blocked_on state, but when we move to
proxying across runqueues, we will need to add more state
and a way to serialize changes to this state in contexts
where we don't hold the mutex::wait_lock.
So introduce the task::blocked_lock, which nests under the
mutex::wait_lock in the locking order, and rework the locking
to use it.
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>
Link: https://patch.msgid.link/20260324191337.1841376-5-jstultz@google.com
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This reverts commit 7b7f2dd913829e06705035dfc41ca25fa6ec68d3.
There was some problems with an earlier cdns3 change, so this one needs
to be backed out as well.
Cc: Pawel Laszczak <pawell@cadence.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Reported-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/ac+LEWMCQpLSnfoD@nchen-desktop
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mani/mhi into char-misc-next
Manivannan writes:
MHI Host
--------
- Add support for Qualcomm SDX35 and Telit FE912C04 modems reusing the existing
channel and event configurations.
- Enable IP_SW and IP_ETH MHI channels for Qualcomm 5G DU X100 Accelerator
device (QDU100). These channels are used to carry O-RAN specific M-Plane,
S-Plane and Netconf packets. The drivers making use of these channels is being
reviewed.
- Add NMEA channels to Telit FN920C04 and FN990A modems for GPS/GNSS support
- Switch to mhi_async_power_up() API in pci_generic driver to avoid boot delays
as some Qcom modems take a while start. This API ensures that the pci_generic
driver powers up the modem asynchronously and doesn't block the system boot.
- Add pm_runtime_forbid() in remove callback to balance the pm_runtime_allow()
call made during the Mission Mode transition.
- Used kzalloc_flex() to simplify kzalloc() + kzalloc() calls
MHI Endpoint
------------
- Test for non-zero return value 'if (ret)' in the endpoint stack where
applicable to maintain code uniformity.
* tag 'mhi-for-v7.1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mani/mhi:
bus: mhi: host: pci_generic: Add Telit FE912C04 modem support
bus: mhi: ep: Test for non-zero return value where applicable
bus: mhi: host: Use kzalloc_flex
bus: mhi: host: pci_generic: Add pm_runtime_forbid() in remove callback
bus: mhi: host: pci_generic: Switch to async power up to avoid boot delays
bus: mhi: host: pci_generic: Add NMEA channels to FN920C04 and FN990A
bus: mhi: host: pci_generic: Enable IP_SW and IP_ETH channels for Qcom QDU100 device
bus: mhi: host: pci_generic: Add Qualcomm SDX35 modem
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CONFIG_CRASH_DM_CRYPT
This will prevent a compilation failure when CONFIG_CRASH_DUMP is enabled
but CONFIG_CRASH_DM_CRYPT is disabled,
arch/powerpc/kexec/elf_64.c: In function 'elf64_load':
>> arch/powerpc/kexec/elf_64.c:82:23: error: implicit declaration of function 'crash_load_dm_crypt_keys' [-Werror=implicit-function-declaration]
82 | ret = crash_load_dm_crypt_keys(image);
| ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
Link: https://lkml.kernel.org/r/20260225060347.718905-3-coxu@redhat.com
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202602120648.RgQALnnI-lkp@intel.com/
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Arnaud Lefebvre <arnaud.lefebvre@clever-cloud.com>
Cc: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Kairui Song <ryncsn@gmail.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Pingfan Liu <kernelfans@gmail.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Sourabh Jain <sourabhjain@linux.ibm.com>
Cc: Thomas Staudt <tstaudt@de.ibm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Currently the high-level xor code chunks up all operations into small
units for only up to 1 + 4 vectors, and passes it to four different
methods. This means the FPU/vector context is entered and left a lot for
wide stripes, and a lot of indirect expensive indirect calls are
performed. Switch to passing the entire gen_xor request to the low-level
ops, and provide a macro to dispatch it to the existing helper.
This reduce the number of indirect calls and FPU/vector context switches
by a factor approaching nr_stripes / 4, and also reduces source and binary
code size.
Link: https://lkml.kernel.org/r/20260327061704.3707577-27-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Tested-by: Eric Biggers <ebiggers@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Sterba <dsterba@suse.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Li Nan <linan122@huawei.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Song Liu <song@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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xor_blocks is very annoying to use, because it is limited to 4 + 1 sources
/ destinations, has an odd argument order and is completely undocumented.
Lift the code that loops around it from btrfs and async_tx/async_xor into
common code under the name xor_gen and properly document it.
[hch@lst.de: make xor_blocks less annoying to use]
Link: https://lkml.kernel.org/r/20260327061704.3707577-24-hch@lst.de
Link: https://lkml.kernel.org/r/20260327061704.3707577-23-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Tested-by: Eric Biggers <ebiggers@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Sterba <dsterba@suse.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Li Nan <linan122@huawei.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Song Liu <song@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Move the asm/xor.h headers to lib/raid/xor/$(SRCARCH)/xor_arch.h and
include/linux/raid/xor_impl.h to lib/raid/xor/xor_impl.h so that the
xor.ko module implementation is self-contained in lib/raid/.
As this remove the asm-generic mechanism a new kconfig symbol is added to
indicate that a architecture-specific implementations exists, and
xor_arch.h should be included.
Link: https://lkml.kernel.org/r/20260327061704.3707577-22-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Tested-by: Eric Biggers <ebiggers@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Sterba <dsterba@suse.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Li Nan <linan122@huawei.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Song Liu <song@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Drop the pretty confusing historic XOR_TRY_TEMPLATES and
XOR_SELECT_TEMPLATE, and instead let the architectures provide a
arch_xor_init that calls either xor_register to register candidates or
xor_force to force a specific implementation.
Link: https://lkml.kernel.org/r/20260327061704.3707577-10-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Tested-by: Eric Biggers <ebiggers@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Sterba <dsterba@suse.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Li Nan <linan122@huawei.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Song Liu <song@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Keep xor.h for the public API, and split the struct xor_block_template
definition that is only needed by the xor.ko core and
architecture-specific optimizations into a separate xor_impl.h header.
Link: https://lkml.kernel.org/r/20260327061704.3707577-9-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Tested-by: Eric Biggers <ebiggers@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Sterba <dsterba@suse.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Li Nan <linan122@huawei.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Song Liu <song@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Pull bpf fixes from Alexei Starovoitov:
- Fix register equivalence for pointers to packet (Alexei Starovoitov)
- Fix incorrect pruning due to atomic fetch precision tracking (Daniel
Borkmann)
- Fix grace period wait for bpf_link-ed tracepoints (Kumar Kartikeya
Dwivedi)
- Fix use-after-free of sockmap's sk->sk_socket (Kuniyuki Iwashima)
- Reject direct access to nullable PTR_TO_BUF pointers (Qi Tang)
- Reject sleepable kprobe_multi programs at attach time (Varun R
Mallya)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
selftests/bpf: Add more precision tracking tests for atomics
bpf: Fix incorrect pruning due to atomic fetch precision tracking
bpf: Reject sleepable kprobe_multi programs at attach time
bpf: reject direct access to nullable PTR_TO_BUF pointers
bpf: sockmap: Fix use-after-free of sk->sk_socket in sk_psock_verdict_data_ready().
bpf: Fix grace period wait for tracepoint bpf_link
bpf: Fix regsafe() for pointers to packet
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In a subsequent patch, the regs_refine_cond_op and reg_bounds_sync
functions will be called in is_branch_taken instead of reg_set_min_max,
to simulate each branch's outcome. Since they will run before we branch
out, these two functions will need to work on temporary registers for
the two branches.
This refactoring patch prepares for that change, by introducing the
temporary registers on bpf_verifier_env and using them in
reg_set_min_max.
This change also allows us to save one fake_reg slot as we don't need to
allocate an additional temporary buffer in case of a BPF_K condition.
Finally, you may notice that this patch removes the check for
"false_reg1 == false_reg2" in reg_set_min_max. That check was introduced
in commit d43ad9da8052 ("bpf: Skip bounds adjustment for conditional
jumps on same scalar register") to avoid an invariant violation. Given
that "env->false_reg1 == env->false_reg2" doesn't make sense and
invariant violations are addressed in a subsequent commit, this patch
just removes the check.
Suggested-by: Eduard Zingerman <eddyz87@gmail.com>
Co-developed-by: Harishankar Vishwanathan <harishankar.vishwanathan@gmail.com>
Signed-off-by: Harishankar Vishwanathan <harishankar.vishwanathan@gmail.com>
Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/260b0270052944a420e1c56e6a92df4d43cadf03.1775142354.git.paul.chaignon@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Implement the standard ETHTOOL_PHY_DOWNSHIFT tunable for the LAN88xx
PHY. This allows runtime configuration of the auto-downshift feature
via ethtool:
ethtool --set-phy-tunable eth0 downshift on count 3
The LAN88xx PHY supports downshifting from 1000BASE-T to 100BASE-TX
after 2-5 failed auto-negotiation attempts. Valid count values are
2, 3, 4 and 5.
This is based on an earlier downstream implementation by Phil Elwell.
Signed-off-by: Nicolai Buchwitz <nb@tipi-net.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20260401123848.696766-2-nb@tipi-net.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/drivers
Qualcomm driver updates for v7.1
Add ECS LIVA QC710, Glymur CRD, Mahua CRD, Purwa IoT EVK, and Asus
Vivobook to the QSEECOM allow-list, to enable UEFI variable access
through uefisecapp.
Register the Gunyah watchdog device if the SCM driver finds itself
running under Gunyah. Clean up some locking using guards.
Handle possible cases where AOSS cooling state is given a non-boolean
state.
Replace LLCC per-slice activation bitmap with reference counting. Also
add SDM670 support.
Improve probe deferral handling in the OCMEM driver.
Add Milos, QCS615, Eliza, Glymur, and Mahua support to the pd-mapper.
Add support for SoCCP-based pmic-glink, as found in Glymur and
Kaanapali.
Add common QMI service ids to the main qmi headerfile, to avoid
spreading these constants in various drivers.
Add support for version 2 of SMP2P and implement the irqchip state
reading support.
Add CQ7790, SA8650P, SM7450, SM7450P, and IPQ5210 SoC and the PM7550BA
PMIC identifiers to the socinfo driver.
Add Eliza and Mahua support to the UBWC driver, introduce helpers for
drivers to read out min_acc length and other programmable values, and
disable bank swizzling for Glymur.
Simplify the logic related to allocation of NV download request in the
WCNSS control driver.
* tag 'qcom-drivers-for-7.1' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (51 commits)
soc: qcom: ubwc: add helpers to get programmable values
soc: qcom: ubwc: add helper to get min_acc length
firmware: qcom: scm: Register gunyah watchdog device
soc: qcom: socinfo: Add SoC ID for SA8650P
dt-bindings: arm: qcom,ids: Add SoC ID for SA8650P
firmware: qcom: scm: Allow QSEECOM on Mahua CRD
soc: qcom: wcnss: simplify allocation of req
soc: qcom: pd-mapper: Add support for Eliza
soc: qcom: aoss: compare against normalized cooling state
soc: qcom: llcc: fix v1 SB syndrome register offset
dt-bindings: firmware: qcom,scm: Document ipq9650 SCM
soc: qcom: ubwc: Add support for Mahua
soc: qcom: pd-mapper: Add support for Glymur and Mahua
soc: qcom: ubwc: Add configuration Eliza SoC
soc: qcom: ubwc: Remove redundant x1e80100_data
dt-bindings: firmware: qcom,scm: document Eliza SCM Firmware Interface
soc: qcom: ocmem: return -EPROBE_DEFER is ocmem is not available
soc: qcom: ocmem: register reasons for probe deferrals
soc: qcom: ocmem: make the core clock optional
soc: qcom: ubwc: disable bank swizzling for Glymur platform
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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soc/drivers
Reset controller updates for v7.1
* Rework the reset core to support firmware nodes, add more fine
grained locking, and use guard() helpers.
* Change the reset-gpio driver to use firmware nodes.
* Add support for the Cix Sky1 SoC reset controller.
* Add support for the RZ/G3E SoC to the reset-rzv2h-usb2phy driver and
convert it to regmap. Prepare registering a VBUS mux controller.
* Replace use of the deprecated register_restart_handler() function in
the ath79, intel-gw, lpc18xx, ma35d1, npcm, and sunplus reset drivers.
* Combine two allocations into one in the sti/reset-syscfg driver.
* Fix the reset-rzg2l-usbphy-ctrl MODULE_AUTHOR email.
* Fix the reset_control_rearm() kerneldoc comment.
The last commit is a merge of reset-fixes-for-v7.0-2 into reset/next,
to solve a merge conflict between commits a9b95ce36de4 ("reset: gpio: add a
devlink between reset-gpio and its consumer") and fbffb8c7c7bb ("reset: gpio:
fix double free in reset_add_gpio_aux_device() error path").
* tag 'reset-for-v7.1' of https://git.pengutronix.de/git/pza/linux: (35 commits)
reset: rzv2h-usb2phy: Add support for VBUS mux controller registration
reset: rzv2h-usb2phy: Convert to regmap API
dt-bindings: reset: renesas,rzv2h-usb2phy: Document RZ/G3E USB2PHY reset
dt-bindings: reset: renesas,rzv2h-usb2phy: Add '#mux-state-cells' property
reset: core: Drop unnecessary double quote
reset: rzv2h-usb2phy: Keep PHY clock enabled for entire device lifetime
reset: spacemit: k3: Decouple composite reset lines
reset: gpio: fix double free in reset_add_gpio_aux_device() error path
reset: rzg2l-usbphy-ctrl: Fix malformed MODULE_AUTHOR string
reset: sti: kzalloc + kcalloc to kzalloc
reset: don't overwrite fwnode_reset_n_cells
reset: core: Fix indentation
reset: add Sky1 soc reset support
dt-bindings: soc: cix: document the syscon on Sky1 SoC
reset: gpio: make the driver fwnode-agnostic
reset: convert reset core to using firmware nodes
reset: convert the core API to using firmware nodes
reset: convert of_reset_control_get_count() to using firmware nodes
reset: protect struct reset_control with its own mutex
reset: protect struct reset_controller_dev with its own mutex
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Cross-merge networking fixes after downstream PR (net-7.0-rc7).
Conflicts:
net/vmw_vsock/af_vsock.c
b18c83388874 ("vsock: initialize child_ns_mode_locked in vsock_net_init()")
0de607dc4fd8 ("vsock: add G2H fallback for CIDs not owned by H2G transport")
Adjacent changes:
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
ceee35e5674a ("bnxt_en: Refactor some basic ring setup and adjustment logic")
57cdfe0dc70b ("bnxt_en: Resize RSS contexts on channel count change")
drivers/net/wireless/intel/iwlwifi/mld/mac80211.c
4d56037a02bd ("wifi: iwlwifi: mld: block EMLSR during TDLS connections")
687a95d204e7 ("wifi: iwlwifi: mld: correctly set wifi generation data")
drivers/net/wireless/intel/iwlwifi/mld/scan.h
b6045c899e37 ("wifi: iwlwifi: mld: Refactor scan command handling")
ec66ec6a5a8f ("wifi: iwlwifi: mld: Fix MLO scan timing")
drivers/net/wireless/intel/iwlwifi/mvm/fw.c
078df640ef05 ("wifi: iwlwifi: mld: add support for iwl_mcc_allowed_ap_type_cmd v
2")
323156c3541e ("wifi: iwlwifi: mvm: don't send a 6E related command when not supported")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"With fixes from wireless, bluetooth and netfilter included we're back
to each PR carrying 30%+ more fixes than in previous era.
The good news is that so far none of the "extra" fixes are themselves
causing real regressions. Not sure how much comfort that is.
Current release - fix to a fix:
- netdevsim: fix build if SKB_EXTENSIONS=n
- eth: stmmac: skip VLAN restore when VLAN hash ops are missing
Previous releases - regressions:
- wifi: iwlwifi: mvm: don't send a 6E related command when
not supported
Previous releases - always broken:
- some info leak fixes
- add missing clearing of skb->cb[] on ICMP paths from tunnels
- ipv6:
- flowlabel: defer exclusive option free until RCU teardown
- avoid overflows in ip6_datagram_send_ctl()
- mpls: add seqcount to protect platform_labels from OOB access
- bridge: improve safety of parsing ND options
- bluetooth: fix leaks, overflows and races in hci_sync
- netfilter: add more input validation, some to address bugs directly
some to prevent exploits from cooking up broken configurations
- wifi:
- ath: avoid poor performance due to stopping the wrong
aggregation session
- virt_wifi: remove SET_NETDEV_DEV to avoid use-after-free
- eth:
- fec: fix the PTP periodic output sysfs interface
- enetc: safely reinitialize TX BD ring when it has unsent frames"
* tag 'net-7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (95 commits)
eth: fbnic: Increase FBNIC_QUEUE_SIZE_MIN to 64
ipv6: avoid overflows in ip6_datagram_send_ctl()
net: hsr: fix VLAN add unwind on slave errors
net: hsr: serialize seq_blocks merge across nodes
vsock: initialize child_ns_mode_locked in vsock_net_init()
selftests/tc-testing: add tests for cls_fw and cls_flow on shared blocks
net/sched: cls_flow: fix NULL pointer dereference on shared blocks
net/sched: cls_fw: fix NULL pointer dereference on shared blocks
net/x25: Fix overflow when accumulating packets
net/x25: Fix potential double free of skb
bnxt_en: Restore default stat ctxs for ULP when resource is available
bnxt_en: Don't assume XDP is never enabled in bnxt_init_dflt_ring_mode()
bnxt_en: Refactor some basic ring setup and adjustment logic
net/mlx5: Fix switchdev mode rollback in case of failure
net/mlx5: Avoid "No data available" when FW version queries fail
net/mlx5: lag: Check for LAG device before creating debugfs
net: macb: properly unregister fixed rate clocks
net: macb: fix clk handling on PCI glue driver removal
virtio_net: clamp rss_max_key_size to NETDEV_RSS_KEY_LEN
net/sched: sch_netem: fix out-of-bounds access in packet corruption
...
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git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu fixes from Joerg Roedel:
- IOMMU-PT related compile breakage in for AMD driver
- IOTLB flushing behavior when unmapped region is larger than requested
due to page-sizes
- Fix IOTLB flush behavior with empty gathers
* tag 'iommu-fixes-v7.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
iommupt/amdv1: mark amdv1pt_install_leaf_entry as __always_inline
iommupt: Fix short gather if the unmap goes into a large mapping
iommu: Do not call drivers for empty gathers
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cpufreq_cpu_get() can sleep on PREEMPT_RT in presence of concurrent
writer(s), however amd-pstate depends on fetching the cpudata via the
policy's driver data which necessitates grabbing the reference.
Since schedutil governor can call "cpufreq_driver->update_perf()"
during sched_tick/enqueue/dequeue with rq_lock held and IRQs disabled,
fetching the policy object using the cpufreq_cpu_get() helper in the
scheduler fast-path leads to "BUG: scheduling while atomic" on
PREEMPT_RT [1].
Pass the cached cpufreq policy object in sg_policy to the update_perf()
instead of just the CPU. The CPU can be inferred using "policy->cpu".
The lifetime of cpufreq_policy object outlasts that of the governor and
the cpufreq driver (allocated when the CPU is onlined and only reclaimed
when the CPU is offlined / the CPU device is removed) which makes it
safe to be referenced throughout the governor's lifetime.
Closes:https://lore.kernel.org/all/20250731092316.3191-1-spasswolf@web.de/ [1]
Fixes: 1d215f0319c2 ("cpufreq: amd-pstate: Add fast switch function for AMD P-State")
Reported-by: Bert Karwatzki <spasswolf@web.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
Acked-by: Gary Guo <gary@garyguo.net> # Rust
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260316081849.19368-3-kprateek.nayak@amd.com
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
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Move a #define so that it is not between kernel-doc and its struct
declaration.
Spell one struct member correctly.
Warning: include/linux/platform_data/apds990x.h:33 #define
APDS_PARAM_SCALE 4096; error: Cannot parse struct or union!
Warning: include/linux/platform_data/apds990x.h:62 struct member
'pdrive' not described in 'apds990x_platform_data'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://patch.msgid.link/20260226051207.547152-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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xHCI hardware maintains its endpoint state between add_endpoint()
and drop_endpoint() calls followed by successful check_bandwidth().
So does the driver.
Core may call endpoint_disable() during xHCI endpoint life, so don't
clear host_ep->hcpriv then, because this breaks endpoint_reset().
If a driver calls usb_set_interface(), submits URBs which make host
sequence state non-zero and calls usb_clear_halt(), the device clears
its sequence state but xhci_endpoint_reset() bails out. The next URB
malfunctions: USB2 loses one packet, USB3 gets Transaction Error or
may not complete at all on some (buggy?) HCs from ASMedia and AMD.
This is triggered by uvcvideo on bulk video devices.
The code was copied from ehci_endpoint_disable() but it isn't needed
here - hcpriv should only be NULL on emulated root hub endpoints.
It might prevent resetting and inadvertently enabling a disabled and
dropped endpoint, but core shouldn't try to reset dropped endpoints.
Document xhci requirements regarding hcpriv. They are currently met.
Fixes: 18b74067ac78 ("xhci: Fix use-after-free regression in xhci clear hub TT implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-26-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Switched struct pointer member to a flexible array member to get rid of
kzalloc_objs as there's no need for them to be separately allocated.
AAdded __counted_by for extra runtime analysis.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260311232459.18407-1-rosenp@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There is an existing comedi_request_region(dev, start, len) function
used by COMEDI drivers for legacy devices to request an I/O port region
starting at a specified base address (which must be non-zero) and with a
specified length. It uses request_region(). On success, it sets
dev->iobase and dev->iolen and returns 0. There is a alternative
function __comedi_request_region(dev, start, len) which does the same
thing without setting dev->iobase and dev->iolen.
Most hardware devices have restrictions on the allowed I/O port base
address and alignment, so add new functions
comedi_check_request_region(dev, start, len, minstart, maxend, minalign)
and __comedi_check_request_region(dev, start, len, minstart, maxend,
minalign) to perform these additional checks. Turn the original
functions into static inline wrapper functions that call the new
functions.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://patch.msgid.link/20260130170416.49994-2-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The following fix in sched/urgent:
e08d007f9d81 ("sched/debug: Fix avg_vruntime() usage")
is in conflict with this pending commit in sched/core:
4823725d9d1d ("sched/fair: Increase weight bits for avg_vruntime")
Both modify the same variable definition and initialization blocks,
resolve it by merging the two.
Conflicts:
kernel/sched/debug.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Making ->d_rcu and (then) ->d_child overlapping dates back to
2006; anon unions support had been added to gcc only in 4.6
(2011) and the minimal gcc version hadn't been bumped to that
until 4.19 (2018).
These days there's no reason not to keep that union named.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Most of the places using d_alias are loops iterating through all aliases for
given inode; introduce a helper macro (for_each_alias(dentry, inode))
and convert open-coded instances of such loop to it.
They are easier to read that way and it reduces the noise on the next steps.
You _must_ hold inode->i_lock over that thing.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Replace the coarse USB device lock with a dedicated offload_lock
spinlock to reduce contention during offload operations. Use
offload_pm_locked to synchronize with PM transitions and replace
the legacy offload_at_suspend flag.
Optimize usb_offload_get/put by switching from auto-resume/suspend
to pm_runtime_get_if_active(). This ensures offload state is only
modified when the device is already active, avoiding unnecessary
power transitions.
Cc: stable <stable@kernel.org>
Fixes: ef82a4803aab ("xhci: sideband: add api to trace sideband usage")
Signed-off-by: Guan-Yu Lin <guanyulin@google.com>
Tested-by: Hailong Liu <hailong.liu@oppo.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260401123238.3790062-2-guanyulin@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch introduces support for operating the Cadence USBSSP (cdnsp)
controller in a peripheral-only mode, bypassing the Dual-Role Device (DRD)
logic.
The change in BAR indexing (from BAR 2 to BAR 1) is a direct
consequence of switching from 64-bit to 32-bit addressing in the
Peripheral-only configuration.
Tested on PCI platform with Device-only configuration. Platform-side
changes are included to support the PCI glue layer's property injection.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> # pci_ids.h
Link: https://patch.msgid.link/20260331-device_only-v1-1-00378b80365c@cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix comment style for enums so they're kernel-doc compliant.
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Link: https://patch.msgid.link/20260401-fix-mfd-max77759-usb-next-v1-1-174ec23ad824@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Current CC designs don't place a vIOMMU in front of untrusted devices.
Instead, the DMA API forces all untrusted device DMA through swiotlb
bounce buffers (is_swiotlb_force_bounce()) which copies data into
shared memory on behalf of the device.
When a caller has already arranged for the memory to be shared
via set_memory_decrypted(), the DMA API needs to know so it can map
directly using the unencrypted physical address rather than bounce
buffering. Following the pattern of DMA_ATTR_MMIO, add
DMA_ATTR_CC_SHARED for this purpose. Like the MMIO case, only the
caller knows what kind of memory it has and must inform the DMA API
for it to work correctly.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20260325192352.437608-2-jiri@resnulli.us
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The function helps to XOR bitmaps and calculate Hamming weight of
the result in one pass.
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Yury Norov <ynorov@nvidia.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee into soc/drivers
TEE update for 7.1
Clean up tee_core.h kernel-doc to eliminate build warnings
* tag 'tee-for-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee:
tee: clean up tee_core.h kernel-doc
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32 into soc/drivers
STM32 Firewall bus for v7.1, round 1
Highlights:
----------
Stm32 SoCs embed debug peripherals such as Coresight. These peripherals
can monitor the activity of the cores. Because of that, they can be
used only if some features in the debug configuration are enabled.
Else, errors or firewall exceptions can be observed. Similarly to
the ETZPC(on stm32mp1x platforms) or the RIFSC(on stm32mp2x platforms),
debug-related peripherals access can be assessed at bus level to
prevent these issues from happening.
The debug configuration can only be accessed by the secure world.
That means that a service must be implemented in the secure world for
the kernel to check the firewall configuration. On OpenSTLinux, it is
done through a Debug access PTA in OP-TEE [1].
To represent the debug peripherals present on a dedicated debug bus,
create a debug bus node in the device tree and the associated driver
that will interact with this PTA.
Plus some fixes.
* tag 'stm32-bus-firewall-for-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32:
pinctrl: stm32: add firewall checks before probing the HDP driver
drivers: bus: add the stm32 debug bus driver
bus: stm32_firewall: add stm32_firewall_get_grant_all_access() API
bus: stm32_firewall: allow check on different firewall controllers
dt-bindings: bus: document the stm32 debug bus
dt-bindings: pinctrl: document access-controllers property for stm32 HDP
dt-bindings: document access-controllers property for coresight peripherals
bus: rifsc: fix RIF configuration check for peripherals
bus: rifsc: Replace snprintf("%s") with strscpy
bus: stm32_firewall: Simplify with scoped for each OF child loop
bus: firewall: move stm32_firewall header file in include folder
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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On systems where many CPUs share one LLC, unbound workqueues using
WQ_AFFN_CACHE collapse to a single worker pool, causing heavy spinlock
contention on pool->lock. For example, Chuck Lever measured 39% of
cycles lost to native_queued_spin_lock_slowpath on a 12-core shared-L3
NFS-over-RDMA system.
The existing affinity hierarchy (cpu, smt, cache, numa, system) offers
no intermediate option between per-LLC and per-SMT-core granularity.
Add WQ_AFFN_CACHE_SHARD, which subdivides each LLC into groups of at
most wq_cache_shard_size cores (default 8, tunable via boot parameter).
Shards are always split on core (SMT group) boundaries so that
Hyper-Threading siblings are never placed in different pods. Cores are
distributed across shards as evenly as possible -- for example, 36 cores
in a single LLC with max shard size 8 produces 5 shards of 8+7+7+7+7
cores.
The implementation follows the same comparator pattern as other affinity
scopes: precompute_cache_shard_ids() pre-fills the cpu_shard_id[] array
from the already-initialized WQ_AFFN_CACHE and WQ_AFFN_SMT topology,
and cpus_share_cache_shard() is passed to init_pod_type().
Benchmark on NVIDIA Grace (72 CPUs, single LLC, 50k items/thread), show
cache_shard delivers ~5x the throughput and ~6.5x lower p50 latency
compared to cache scope on this 72-core single-LLC system.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Fix "poer" -> "per" in the WQ_AFFN_SMT enum comment.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Since commit 3a3f61ce5e0b ("exec: Make sure task->comm is always
NUL-terminated"), __set_task_comm() is unlocked and no longer uses
strscpy_pad() - update the stale comment accordingly.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://patch.msgid.link/20260401152039.724811-4-thorsten.blum@linux.dev
Signed-off-by: Kees Cook <kees@kernel.org>
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Type 40 entries (Additional Information) are summarized in section 7.41 as
part of the SMBIOS specification. Generally, these entries aren't interesting
to save.
However on some AMD Zen systems, the AGESA version is stored here. This is
useful to save to the kernel message logs for debugging. It can be used to
cross-reference issues.
Implement an iterator for the Additional Information entries. Use this to find
and print the AGESA string. Do so in AMD code, since the use case is
AMD-specific.
[ bp: Match only "AGESA". ]
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Co-developed-by: "Mario Limonciello (AMD)" <superm1@kernel.org>
Signed-off-by: "Mario Limonciello (AMD)" <superm1@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Link: https://patch.msgid.link/20260307141024.819807-6-superm1@kernel.org
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The entries later in enum dmi_entry_type don't match the SMBIOS
specification¹.
The entry for type 33: `64-Bit Memory Error Information` is not present and
thus the index for all later entries is incorrect.
Add it.
Also, add missing entry types 43-46, while at it.
¹ Search for "System Management BIOS (SMBIOS) Reference Specification"
[ bp: Drop the flaky SMBIOS spec URL. ]
Fixes: 93c890dbe5287 ("firmware: Add DMI entry types to the headers")
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Link: https://patch.msgid.link/20260307141024.819807-2-superm1@kernel.org
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The wrapper will be used to simplify cleanups of 'struct time_namespace'.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260330-timens-cleanup-v1-1-936e91c9dd30@linutronix.de
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Currently, PL4 and MSR-based RAPL PMU support are detected using
separate CPU ID tables (pl4_support_ids and pmu_support_ids) in the
MSR driver probe path. This creates a maintenance burden since adding
a new CPU requires updates in two places: the rapl_ids table and one
or both of these capability tables.
Consolidate PL4 and PMU capability information directly into
struct rapl_defaults by adding msr_pl4_support and msr_pmu_support
flags. This allows per-CPU capability to be expressed in a single
place alongside other per-CPU defaults, eliminating the duplicate
CPU ID tables entirely.
No functional changes are intended.
Co-developed-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Link: https://patch.msgid.link/20260331211950.3329932-8-sathyanarayanan.kuppuswamy@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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RAPL primitive information varies across different RAPL interfaces
(MSR, TPMI, MMIO). Keeping them in the common code adds no benefit, but
requires interface-specific handling logic and makes the common layer
unnecessarily complex.
Move the primitive info infrastructure to the shared header to allow
interface drivers to configure RAPL primitives. Specific changes:
1. Move struct rapl_primitive_info, enum unit_type, and
PRIMITIVE_INFO_INIT macro to intel_rapl.h.
2. Change the @rpi field in struct rapl_if_priv from void * to
struct rapl_primitive_info * to improve type safety and eliminate
unnecessary casts.
No functional changes. This is a preparatory refactoring to allow
interface drivers to supply their own RAPL primitive settings.
Co-developed-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Link: https://patch.msgid.link/20260331211950.3329932-4-sathyanarayanan.kuppuswamy@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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A recent change exposed a bug in the error path: if
freq_qos_add_request(boost_freq_req) fails, min_freq_req may remain a
valid pointer even though it was never successfully added. During policy
teardown, this leads to an unconditional call to
freq_qos_remove_request(), triggering a WARN.
The current design allocates all three freq_req objects together, making
the lifetime rules unclear and error handling fragile.
Simplify this by allocating the QoS freq_req objects at policy
allocation time. The policy itself is dynamically allocated, and two of
the three requests are always needed anyway. This ensures consistent
lifetime management and eliminates the inconsistent state in failure
paths.
Reported-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Fixes: 6e39ba4e5a82 ("cpufreq: Add boost_freq_req QoS request")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Tested-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Link: https://patch.msgid.link/a293f29d841b86c51f34699c6e717e01858d8ada.1774933424.git.viresh.kumar@linaro.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes
Qualcomm driver fixes for v7.0
Fix the length of the PD restart reason string in pd-mapper to avoid
QMI decoding errors, resulting in the notification being dropped.
Fix the newly introduce handling of TBT/USB4 notifications in pmic_glink
altmode driver, as it broke the handling of non-TBT/USB4 DisplayPort
unplug events.
* tag 'qcom-drivers-fixes-for-7.0' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
soc: qcom: pmic_glink_altmode: Fix TBT->SAFE->!TBT transition
soc: qcom: pmic_glink_altmode: Fix SVID=DP && unconnected edge case
soc: qcom: pd-mapper: Fix element length in servreg_loc_pfr_req_ei
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
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Merge the pmdomain fixes for v7.0-rc[n] into the next branch, to allow
them to get tested together with the pmdomain changes that are targeted
for the next release.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Merge the immutable branch pmdomain into next to get the changes queued and
tested for the next release. The pmdomain branch hosts minor core changes
for pmdomain.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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