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Extract the kernel configuration file parsing logic from feature.c into
a new read_kernel_config() function in common.c. This includes:
1. Moving the config file handling and option parsing code
2. Adding required headers and struct definition
3. Keeping all existing functionality
The refactoring enables sharing this logic with other components while
maintaining current behavior. This will be used by subsequent patches
that need to check kernel config options.
Signed-off-by: Yuan Chen <chenyuan@kylinos.cn>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Quentin Monnet <qmo@kernel.org>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20250829061107.23905-2-chenyuan_fl@163.com
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Instead of using static variable flat_state_cnt to pass data between
functions involved in the _LPI information processing, pass the current
number of "flattened" idle states to flatten_lpi_states() and make it
return the updated number of those states. At the same time, use a
local variable called state_count to store the number of "flattened"
idle states found so far in acpi_processor_get_lpi_info().
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: lihuisong@huawei.com
Link: https://patch.msgid.link/10715991.nUPlyArG6x@rafael.j.wysocki
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Add a new module import namespace called ACPI_PROCESSOR_IDLE for
functions exported from the non-modular part of the ACPI processor
driver to the modular part of it.
Export acpi_processor_claim_cst_control() and acpi_processor_evaluate_cst()
in that namespace to hide them from unrelated modules.
They are also used by the intel_idle driver, but it is non-modular,
so it can call them regardless of the way the symbols are exported.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3376499.aeNJFYEL58@rafael.j.wysocki
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Currently, the ACPI idle driver is registered from within a CPU
hotplug callback. Although this didn't cause any functional issues,
this is questionable and confusing. And it is better to register
the cpuidle driver when all of the CPUs have been brought up.
So add a new function to initialize acpi_idle_driver based on the
power management information of an available CPU and register cpuidle
driver in acpi_processor_driver_init().
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20250728070612.1260859-3-lihuisong@huawei.com
[ rjw: Added missing inline modifiers ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Driver unconditionally saves current state on first init in
dsi_pll_7nm_init(), but does not save the VCO rate, only some of the
divider registers. The state is then restored during probe/enable via
msm_dsi_phy_enable() -> msm_dsi_phy_pll_restore_state() ->
dsi_7nm_pll_restore_state().
Restoring calls dsi_pll_7nm_vco_set_rate() with
pll_7nm->vco_current_rate=0, which basically overwrites existing rate of
VCO and messes with clock hierarchy, by setting frequency to 0 to clock
tree. This makes anyway little sense - VCO rate was not saved, so
should not be restored.
If PLL was not configured configure it to minimum rate to avoid glitches
and configuring entire in clock hierarchy to 0 Hz.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/657827/
Link: https://lore.kernel.org/r/20250610-b4-sm8750-display-v6-9-ee633e3ddbff@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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Add bitfields for PHY_CMN_CTRL_0 registers to avoid hard-coding bit
masks and shifts and make the code a bit more readable.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/657818/
Link: https://lore.kernel.org/r/20250610-b4-sm8750-display-v6-7-ee633e3ddbff@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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According to Hardware Programming Guide for DSI PHY, the retime buffer
resync should be done after PLL clock users (byte_clk and intf_byte_clk)
are enabled. Downstream also does it as part of configuring the PLL.
Driver was only turning off the resync FIFO buffer, but never bringing it
on again.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/657823/
Link: https://lore.kernel.org/r/20250610-b4-sm8750-display-v6-6-ee633e3ddbff@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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The gitlab repository previously associated with
the nouveau module has fallen out of use. The
drm-misc tree here:
https://gitlab.freedesktop.org/drm/misc/kernel.git
Is now where most nouveau-related patches are
applied. This change updates the MAINTAINERS file
to reflect this.
Signed-off-by: James Jones <jajones@nvidia.com>
Link: https://lore.kernel.org/r/20250826195716.1897-1-jajones@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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The dev_err message is reporting an error about capture streams however
it is using the incorrect variable num_playback instead of num_capture.
Fix this by using the correct variable num_capture.
Fixes: a1d1e266b445 ("ASoC: SOF: Intel: Add Intel specific HDA stream operations")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://patch.msgid.link/20250902120639.2626861-1-colin.i.king@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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In some situations 255 bytes offset is not enough to match or manipulate
the desired packet field. Increase the offset limit to 65535 or U16_MAX.
In addition, the nla policy maximum value is not set anymore as it is
limited to s16. Instead, the maximum value is checked during the payload
expression initialization function.
Tested with the nft command line tool.
table ip filter {
chain output {
@nh,2040,8 set 0xff
@nh,524280,8 set 0xff
@nh,524280,8 0xff
@nh,2040,8 0xff
}
}
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
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These functions have no external callers and can be static.
Signed-off-by: Florian Westphal <fw@strlen.de>
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Sebastian points out that avx2 depends on avx, see check_cpufeature_deps()
in arch/x86/kernel/cpu/cpuid-deps.c:
avx2 feature bit will be cleared when avx isn't available.
No functional change intended.
Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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Now that nft_setelem_flush is not called with rcu read lock held or
disabled softinterrupts anymore this can now use GFP_KERNEL too.
This is the last atomic allocation of transaction elements, so remove
all gfp_t arguments and the wrapper function.
This makes attempts to delete large sets much more reliable, before
this was prone to transient memory allocation failures.
Signed-off-by: Florian Westphal <fw@strlen.de>
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Quoting Sven Auhagen:
we do see on occasions that we get the following error message, more so on
x86 systems than on arm64:
Error: Could not process rule: Cannot allocate memory delete table inet filter
It is not a consistent error and does not happen all the time.
We are on Kernel 6.6.80, seems to me like we have something along the lines
of the nf_tables: allow clone callbacks to sleep problem using GFP_ATOMIC.
As hinted at by Sven, this is because of GFP_ATOMIC allocations during
set flush.
When set is flushed, all elements are deactivated. This triggers a set
walk and each element gets added to the transaction list.
The rbtree and rhashtable sets don't allow the iter callback to sleep:
rbtree walk acquires read side of an rwlock with bh disabled, rhashtable
walk happens with rcu read lock held.
Rbtree is simple enough to resolve:
When the walk context is ITER_READ, no change is needed (the iter
callback must not deactivate elements; we're not in a transaction).
When the iter type is ITER_UPDATE, the rwlock isn't needed because the
caller holds the transaction mutex, this prevents any and all changes to
the ruleset, including add/remove of set elements.
Rhashtable is slightly more complex.
When the iter type is ITER_READ, no change is needed, like rbtree.
For ITER_UPDATE, we hold transaction mutex which prevents elements from
getting free'd, even outside of rcu read lock section.
So build a temporary list of all elements while doing the rcu iteration
and then call the iterator in a second pass.
The disadvantage is the need to iterate twice, but this cost comes with
the benefit to allow the iter callback to use GFP_KERNEL allocations in
a followup patch.
The new list based logic makes it necessary to catch recursive calls to
the same set earlier.
Such walk -> iter -> walk recursion for the same set can happen during
ruleset validation in case userspace gave us a bogus (cyclic) ruleset
where verdict map m jumps to chain that sooner or later also calls
"vmap @m".
Before the new ->in_update_walk test, the ruleset is rejected because the
infinite recursion causes ctx->level to exceed the allowed maximum.
But with the new logic added here, elements would get skipped:
nft_rhash_walk_update would see elements that are on the walk_list of
an older stack frame.
As all recursive calls into same map results in -EMLINK, we can avoid this
problem by using the new in_update_walk flag and reject immediately.
Next patch converts the problematic GFP_ATOMIC allocations.
Reported-by: Sven Auhagen <Sven.Auhagen@belden.com>
Closes: https://lore.kernel.org/netfilter-devel/BY1PR18MB5874110CAFF1ED098D0BC4E7E07BA@BY1PR18MB5874.namprd18.prod.outlook.com/
Signed-off-by: Florian Westphal <fw@strlen.de>
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Open coded calculation can be avoided and replaced by the
equivalent csum_replace4() in nft_csum_replace().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
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Remove array_size() calls and replace vmalloc() with vmalloc_array() to
simplify the code. vmalloc_array() is also optimized better, uses fewer
instructions, and handles overflow more concisely[1].
[1]: https://lore.kernel.org/lkml/abc66ec5-85a4-47e1-9759-2f60ab111971@vivo.com/
Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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Saeed Mahameed says:
====================
E-Switch vport sharing & delegation
An mlx5 E-Switch FDB table can manage vports belonging to other sibling
physical functions, such as ECPF (ARM embedded cores) and Host PF (x86).
This enables a single source of truth for SDN software to manage network
pipelines from one host. While such functionality already exists in mlx5,
it is currently limited by static vport allocation,
meaning the number of vports shared between multi-host functions
must be known pre-boot.
This patchset enables delegated/external vports to be discovered
dynamically when switchdev mode is enabled, leveraging new firmware
capabilities for dynamic vport creation.
Adjacent functions that delegate their SR-IOV VFs to sibling PFs, can be
dynamically discovered on the sibling PF's switchdev mode enabling,
after sriov was enabled on the originating PF, allowing for more
flexible and scalable management in multi-host and ECPF-to-host
scenarios.
The patchset consists of the following changes:
- Refactoring of ACL root namespace handling: The storage of vport ACL root
namespaces is converted from a linear array to an xarray, allowing dynamic
creation of ACLs per individual vport.
- Improvements for vhca_id to vport mapping.
- Dynamic querying and creation of delegated functions/vports.
====================
Link: https://patch.msgid.link/20250829223722.900629-1-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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The mlx5 driver caches many capabilities to be used by mlx5 layers.
In SW and HW steering we can use the cached vhca_id instead of invoking
FW commands.
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250829223722.900629-8-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Adjacent vfs get their devlink port information from firmware,
use the information (pfnum, function id) from FW when populating the
devlink port attributes.
Before:
$ devlink port show
pci/0000:00:03.0/180225: type eth netdev eth0 flavour pcivf controller 0 pfnum 0 vfnum 49152 external false splittable false
function:
hw_addr 00:00:00:00:00:00
After:
$ devlink port show
pci/0000:00:03.0/180225: type eth netdev enp0s3npf0vf2 flavour pcivf controller 0 pfnum 0 vfnum 2 external false splittable false
function:
hw_addr 00:00:00:00:00:00
Signed-off-by: Adithya Jayachandran <ajayachandra@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250829223722.900629-7-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Register representors for adjacent vports dynamically when they are
discovered. Dynamically added representors state will now be set to
'REGISTERED' when the representor type was already registered,
otherwise they won't be loaded.
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250829223722.900629-6-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Use the new vport acl root namespace add/remove API to create the
missing acl root name spaces per each new adjacent function vport.
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250829223722.900629-5-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Adding driver support to query adjacent functions vports, AKA
delegated vports.
Adjacent functions can delegate their sriov vfs to other sibling PF in
the system, to be managed by the eswitch capable sibling PF.
E.g, ECPF to Host PF, multi host PF between each other, etc.
Only supported in switchdev mode.
Signed-off-by: Adithya Jayachandran <ajayachandra@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250829223722.900629-4-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Move the loop that creates the vports ACLs root name spaces to eswitch,
since it is the eswitch responsibility to decide when and how many
vports ACLs root namespaces to create, in the next patches we will use
the fs_core vport ACL root namespace APIs to create/remove root ns
ACLs dynamically for dynamically created vports.
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250829223722.900629-3-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Before this patch it was a linear array and could only support a certain
number of vports, in the next patches, vport numbers are not bound to a
well known limit, thus convert acl root name space storage to xarray.
In addition create fs_core public API to add/remove vport acl namespaces
as it is the eswitch responsibility to create the vports and their
root name spaces for acls, in the next patch we will move
mlx5_fs_ingress_acls_{init,cleanup} to eswitch and will use
the individual mlx5_fs_vport_{egress,ingresS}_acl_ns_{add,remove}
APIs for dynamically create vports.
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250829223722.900629-2-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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If an object is backed up to shmem it is incorrectly identified
as not having valid data by the move code. This means moving
to VRAM skips the -EMULTIHOP step and the bo is cleared. This
causes all sorts of weird behaviour on DGFX if an already evicted
object is targeted by the shrinker.
Fix this by using ttm_tt_is_swapped() to identify backed-up
objects.
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/5996
Fixes: 00c8efc3180f ("drm/xe: Add a shrinker for xe bos")
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: <stable@vger.kernel.org> # v6.15+
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://lore.kernel.org/r/20250828134837.5709-1-thomas.hellstrom@linux.intel.com
(cherry picked from commit 1047bd82794a1eab64d643f196d09171ce983f44)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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In the TX completion packet stage of TI SoCs with CPSW2G instance, which
has single external ethernet port, ndev is accessed without being
initialized if no TX packets have been processed. It results into null
pointer dereference, causing kernel to crash. Fix this by having a check
on the number of TX packets which have been processed.
Fixes: 9a369ae3d143 ("net: ethernet: ti: am65-cpsw: remove am65_cpsw_nuss_tx_compl_packets_2g()")
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Chintan Vankar <c-vankar@ti.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250829121051.2031832-1-c-vankar@ti.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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We're not currently setting skb->mac_header on ingress, and the netdev
core rx path expects it. Without it, we'll hit a warning on DEBUG_NETDEV
from commit 1e4033b53db4 ("net: skb_reset_mac_len() must check if
mac_header was set")
Initialise the mac_header to refer to the USB transport header.
Fixes: 0791c0327a6e ("net: mctp: Add MCTP USB transport driver")
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://patch.msgid.link/20250829-mctp-usb-mac-header-v1-1-338ad725e183@codeconstruct.com.au
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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As of commit f5d83cf0eeb9 ("net: mctp: unshare packets when
reassembling"), we skb_unshare() in mctp_frag_queue(). The unshare may
invalidate the original skb pointer, so we need to treat the skb as
entirely owned by the fraq queue, even on failure.
Fixes: f5d83cf0eeb9 ("net: mctp: unshare packets when reassembling")
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://patch.msgid.link/20250829-mctp-skb-unshare-v1-1-1c28fe10235a@codeconstruct.com.au
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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For MSI controllers which only support MSI_FLAG_PCI_MSI_MASK_PARENT, the
newly added callback irq_startup() and irq_shutdown() for
pci_msi[x]_template will not unmask or mask the interrupt when startup()
resp. shutdown() is invoked. This prevents the interrupt from being
enabled resp. disabled.
Invoke irq_[un]mask_parent() in cond_[startup|shutdown]_parent(), when the
interrupt has the MSI_FLAG_PCI_MSI_MASK_PARENT flag set.
Fixes: 54f45a30c0d0 ("PCI/MSI: Add startup/shutdown for per device domains")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Reported-by: Nathan Chancellor <nathan@kernel.org>
Reported-by: Wei Fang <wei.fang@nxp.com>
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Wei Fang <wei.fang@nxp.com>
Tested-by: Chen Wang <unicorn_wang@outlook.com> # Pioneerbox/SG2042
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/all/20250827230943.17829-1-inochiama@gmail.com
Closes: https://lore.kernel.org/regressions/aK4O7Hl8NCVEMznB@monster/
Closes: https://lore.kernel.org/regressions/20250826220959.GA4119563@ax162/
Closes: https://lore.kernel.org/all/20250827093911.1218640-1-wei.fang@nxp.com/
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Enable the PDMA on the SpacemiT K1-based Banana Pi F3 and Milkv Jupiter
boards by setting its status to "okay".
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Link: https://lore.kernel.org/r/20250822-working_dma_0701_v2-v5-7-f5c0eda734cc@riscstar.com
Signed-off-by: Yixun Lan <dlan@gentoo.org>
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Add PDMA dma-controller node under dma_bus for SpacemiT K1 SoC.
The PDMA node is marked as disabled by default, allowing board-specific
device trees to enable it as needed.
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Reviewed-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Link: https://lore.kernel.org/r/20250822-working_dma_0701_v2-v5-6-f5c0eda734cc@riscstar.com
Signed-off-by: Yixun Lan <dlan@gentoo.org>
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Trivial fix to spelling mistake in comment text.
Signed-off-by: Xichao Zhao <zhao.xichao@vivo.com>
Link: https://patch.msgid.link/20250808084213.230592-1-zhao.xichao@vivo.com
Signed-off-by: Jan Kara <jack@suse.cz>
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Memory programming doesn't work for devices without page support.
For example, LP5562 has 3 engines but doesn't support pages,
the start address is changed depending on engine number.
According to datasheet [1], the PROG MEM register addresses for each
engine are as follows:
Engine 1: 0x10
Engine 2: 0x30
Engine 3: 0x50
However, the current implementation incorrectly calculates the address
of PROG MEM register using the engine index starting from 1:
prog_mem_base = 0x10
LP55xx_BYTES_PER_PAGE = 0x20
Engine 1: 0x10 + 0x20 * 1 = 0x30
Engine 2: 0x10 + 0x20 * 2 = 0x50
Engine 3: 0x10 + 0x20 * 3 = 0x70
This results in writing to the wrong engine memory, causing pattern
programming to fail.
To correct it, the engine index should be decreased:
Engine 1: 0x10 + 0x20 * 0 = 0x10
Engine 2: 0x10 + 0x20 * 1 = 0x30
Engine 3: 0x10 + 0x20 * 2 = 0x50
1 - https://www.ti.com/lit/ds/symlink/lp5562.pdf
Fixes: 31379a57cf2f ("leds: leds-lp55xx: Generalize update_program_memory function")
Signed-off-by: Andrei Lalaev <andrei.lalaev@anton-paar.com>
Link: https://lore.kernel.org/r/20250820-lp5562-prog-mem-address-v1-1-8569647fa71d@anton-paar.com
Signed-off-by: Lee Jones <lee@kernel.org>
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devm_ioremap_resource does not return NULL on error
but an error pointer so we need to use IS_ERR to check
the return code.
While at it also pass the error code to dev_err_probe
to improve logging.
Fixes: bc163baef570 ("ASoC: Use of_reserved_mem_region_to_resource() for "memory-region"")
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://patch.msgid.link/20250902102101.378809-1-daniel.baluta@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch adds an entry for Loongson Security Engine drivers in the
list of maintainers.
Signed-off-by: Qunqin Zhao <zhaoqunqin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://lore.kernel.org/r/20250705072045.1067-5-zhaoqunqin@loongson.cn
Signed-off-by: Lee Jones <lee@kernel.org>
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Loongson Security Engine supports random number generation, hash,
symmetric encryption and asymmetric encryption. Based on these
encryption functions, TPM2 have been implemented in the Loongson
Security Engine firmware. This driver is responsible for copying data
into the memory visible to the firmware and receiving data from the
firmware.
Co-developed-by: Yinggang Gu <guyinggang@loongson.cn>
Signed-off-by: Yinggang Gu <guyinggang@loongson.cn>
Signed-off-by: Qunqin Zhao <zhaoqunqin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/r/20250705072045.1067-4-zhaoqunqin@loongson.cn
Signed-off-by: Lee Jones <lee@kernel.org>
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Loongson's Random Number Generator is found inside Loongson Security
Engine chip.
Co-developed-by: Yinggang Gu <guyinggang@loongson.cn>
Signed-off-by: Yinggang Gu <guyinggang@loongson.cn>
Signed-off-by: Qunqin Zhao <zhaoqunqin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/20250705072045.1067-3-zhaoqunqin@loongson.cn
Signed-off-by: Lee Jones <lee@kernel.org>
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Loongson Security Engine chip supports RNG, SM2, SM3 and SM4 accelerator
engines. This is the base driver for other specific engine drivers.
Co-developed-by: Yinggang Gu <guyinggang@loongson.cn>
Signed-off-by: Yinggang Gu <guyinggang@loongson.cn>
Signed-off-by: Qunqin Zhao <zhaoqunqin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://lore.kernel.org/r/20250705072045.1067-2-zhaoqunqin@loongson.cn
Signed-off-by: Lee Jones <lee@kernel.org>
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rnull currently only supports direct completion. Add option for completing
requests across CPU nodes via soft IRQ or IPI.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-17-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Allow users of rust block device driver API to schedule completion of
requests via `blk_mq_complete_request_remote`.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-16-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Add code block quotes to a safety comment.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-15-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Allow users of the rust block device driver API to install private data in
the `GenDisk` structure.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-14-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Allow rust null block devices to be configured and instantiated via
`configfs`.
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-13-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The rust null block driver is about to gain some additional modules. Rather
than pollute the current directory, move the driver to a subdirectory.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-12-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Add a few block subsystem constants to the rust `kernel::block` name space.
This makes it easier to access the constants from rust code.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-11-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Remove the trait bound `T:Operations` from `mq::Request`. The bound is not
required, so remove it to reduce complexity.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-10-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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`RawWriter` is now dead code, so remove it.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-9-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Use the new `NullTerminatedFormatter` to write the name of a `GenDisk` to
the name buffer. This new formatter automatically adds a trailing null
marker after the written characters, so we don't need to append that at the
call site any longer.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-8-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Clean up the import statements in `gen_disk.rs` to make the code easier to
maintain.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-7-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Re-export `configfs_attrs` from `configfs` module, so that users can import
the macro from the `configfs` module rather than the root of the `kernel`
crate.
Also update users to import from the new path.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-6-b5212cc89b98@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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