In support of generic CXL protocol error handling across various 'struct
cxl_port' types, update find_cxl_port_by_uport() to retrieve endpoint CXL
port companions from endpoint PCIe device instances.
The end result is that upstream switch ports and endpoint ports can share
error handling and eventually delete the misplaced cxl_error_handlers from
the cxl_pci class driver.
Reviewed-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260131000403.2135324-10-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
In preparation for generic protocol error handling across CXL endpoints,
whether they be memory expander class devices or accelerators, drop the
endpoint component management from cxl_dev_state.
Organize all CXL port component management through the common cxl_port
driver.
Note that the end game is that drivers/cxl/core/ras.c loses all
dependencies on a 'struct cxl_dev_state' parameter and operates only on
port resources. The removal of component register mapping from cxl_pci is
an incremental step towards that.
Reviewed-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260131000403.2135324-9-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
In preparation for CXL VH (Virtual Host) topology protocol error handling,
add RAS capability registered mapping for all ports in a CXL VH topology.
This includes the RAS capabilities of Switch Upstream Ports, Switch
Downstream Ports, Host Bridge Ports ("upstream"), and Root Ports
("downstream")
Update cxl_port_add_dport() to map the upstream RAS capability on first
'dport' attach.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Co-developed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Terry Bowman <terry.bowman@amd.com>
Link: https://patch.msgid.link/20260131000403.2135324-8-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Towards the end goal of making all CXL RAS capability handling uniform
across host bridge ports, upstream switch ports, and endpoint ports, move
dport RAS setup. Move it to cxl_switch_port_probe() context for switch / VH
dports (via cxl_port_add_dport()) and cxl_endpoint_port_probe() context for
an RCH dport. Rename the RAS setup helper to devm_cxl_dport_ras_setup() for
symmetry with devm_cxl_switch_port_decoders_setup().
Only the RCH version needs to be exported and the cxl_test mocking can be
deleted with a dev_is_pci() check on the dport_dev.
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260131000403.2135324-7-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
In preparation for adding more register setup to the cxl_port_add_dport()
path (for RAS register mapping), move the dport creation event to a driver
callback. This achieves two goals, it puts driver operations logically
where they belong, in a driver, and it obviates the gymnastics of
DECLARE_TESTABLE() which just makes a mess of grepping for CXL symbols.
In other words, a driver callback is less of an ongoing maintenance burden
than this DECLARE_TESTABLE arrangement that does not scale and diminishes
the grep-ability of the codebase.
cxl_port_add_dport() moves mostly unmodified from drivers/cxl/core/port.c.
The only deliberate change is that it now assumes that the device_lock is
held on entry and the driver is attached (just like cxl_port_probe()).
Reviewed-by: Terry Bowman <terry.bowman@amd.com>
Tested-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260131000403.2135324-6-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
There are port setup actions that run on first dport arrival, and there are
setup actions that run per dport.
RAS register setup is a future additional setup action to run per-port
(once the first dport arrives), and each dport also has RAS registers to
map.
Before adding that, flip the order of "first dport" and "per-dport"
actions. This makes allocation symmetric with teardown, "first dport"
actions unwind after last dport removed. It also allows for using a devres
group to collect the unrelated decoder, RAS, and dport setup actions into
one group release action.
The new cxl_port_open_group() collects "first dport" and "per-dport" into
one group that can be released on any failure. This group's lifetime only
needs to span the short duration of cxl_port_add_dport() to cleanup all
potential damage from failing to add a dport. Contrast that to the "dport"
devres group that is called upon to destruct fully formed dport objects.
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260131000403.2135324-5-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
In preparation for adding more setup actions like RAS register mapping,
introduce a devres group to collect all the dport creation / registration
actions. This replaces the maintenance tedium of open coding several
devm_release_action() calls in del_dport().
Tested-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/20260131000403.2135324-4-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
In preparation for refactoring cxl_port_add_dport() to add RAS register
setup, cleanup the number of dport variables with a dport_exists() helper.
Kill the @dport needed to check for duplicates, rename @new_dport to
@dport.
Reported-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Closes: http://lore.kernel.org/20260116150119.00003bbd@huawei.com
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260131000403.2135324-3-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
There are multiple setup actions that can occur for a switch port after it
is known that it has at least one active downstream link. That work is
currently split between __devm_cxl_add_dport(), the add_dport() helper, and
cxl_port_add_dport() where decoder setup occurs.
Clean this up by moving all @dport object setup responsibilities into
add_dport() and all port effects into cxl_port_add_dport().
add_dport() handles taking a reference on @dport->dport_dev, and
cxl_port_add_dport() grows the awareness to setup the port component
registers. This removes an awkward open-coded xa_erase() from the middle of
__devm_cxl_add_dport() and instead tasks cxl_port_add_dport() with calling
the common @dport destruction path if anything goes wrong.
After this @port->nr_dports is always the count of @dports in the
@port->dports xarray, and cxl_dport_remove() is symmetric with add_dport().
With ->nr_dports now reliably tracking the number of dports the use of
ida_is_empty() can be dropped. Recall that the ida is only cleared on
"release" of decoder objects, and release can be arbitrarily delayed past
unregistration.
Lastly port->component_reg_phys is no longer reset to CXL_RESOURCE_NONE
post setup, no reason is seen to carry that forward.
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260131000403.2135324-2-dan.j.williams@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
CXL PCIe Port Protocol Error handling support will be added to the
CXL drivers in the future. In preparation, rename the existing
interfaces to support handling all CXL PCIe Port Protocol Errors.
The driver's RAS support functions currently rely on a 'struct
cxl_dev_state' type parameter, which is not available for CXL Port
devices. However, since the same CXL RAS capability structure is
needed across most CXL components and devices, a common handling
approach should be adopted.
To accommodate this, update the __cxl_handle_cor_ras() and
__cxl_handle_ras() functions to use a `struct device` instead of
`struct cxl_dev_state`.
No functional changes are introduced.
[1] CXL 3.1 Spec, 8.2.4 CXL.cache and CXL.mem Registers
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Alejandro Lucero <alucerop@amd.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Ben Cheatham <benjamin.cheatham@amd.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260114182055.46029-18-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
The convention for devm_ helpers in the CXL driver is that the first
argument is the @host for the operation (locked driver::probe() context).
Reviewed-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/20260114182055.46029-17-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Update the existing 'struct aer_err_info' definition to use kernel-doc
formatting. Remove the inline comments to reduce noise and do not introduce
functional changes. This will improve readability and maintainability.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/20260114182055.46029-16-terry.bowman@amd.com
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
The AER service driver and aer_event tracing currently log 'PCIe Bus Type'
for all errors. Update the driver and aer_event tracing to log 'CXL Bus
Type' for CXL device errors.
This requires that AER can identify and distinguish between PCIe errors and
CXL errors.
Introduce boolean 'is_cxl' to 'struct aer_err_info'. Add assignment in
aer_get_device_error_info() and pci_print_aer().
Update the aer_event trace routine to accept a bus type string parameter.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Co-developed-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/20260114182055.46029-15-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
cxl_rch_handle_error_iter() includes a call to device_lock() using a goto
for multiple return paths. Improve readability and maintainability by
using the guard() lock variant.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260114182055.46029-13-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
The Restricted CXL Host (RCH) AER error handling logic currently resides
in the AER driver file, aer.c. CXL specific changes conditionally compiled
using #ifdefs.
Improve the AER driver maintainability by separating the RCH specific logic
from the AER driver's core functionality and removing the ifdefs. Introduce
drivers/pci/pcie/aer_cxl_rch.c for moving the RCH AER logic into. Conditionally
compile the file using the CONFIG_CXL_RCH_RAS Kconfig.
Move the CXL logic into the new file but leave CXL helper function
is_internal_error() in aer.c for now as it will be moved in future patch
for CXL Virtual Hierarchy handling.
To maintain compilation after the move other changes are required. Change
cxl_rch_handle_error(), cxl_rch_enable_rcec(), and is_internal_error() to
be non-static inorder for accessing from the AER driver.
Update the new file with the SPDX and 2023 AMD copyright notations because
the RCH bits were initially contributed in 2023 by AMD. See commit:
commit 0a867568bb ("PCI/AER: Forward RCH downstream port-detected errors to the CXL.mem dev handler")
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Ben Cheatham <benjamin.cheatham@amd.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260114182055.46029-12-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
The AER driver includes significant logic for handling CXL protocol errors.
The AER driver will be updated in the future to separate the AER and CXL
logic.
Rename the is_internal_error() function to is_aer_internal_error() as it
gives a more precise indication of the purpose. Make
is_aer_internal_error() non-static to allow for the 2 different CXL
topology error model implementations (RCH and VH) to share this helper.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Link: https://patch.msgid.link/20260114182055.46029-11-terry.bowman@amd.com
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Internal PCIe errors are not enabled by default during initialization
because their behavior is too device-specific and there is no standard way
to reason about them. However, for CXL an internal error is the standard
mechanism for conveying CXL protocol errors.
Export pci_aer_unmask_internal_errors() for CXL, but make it clear that
they are only meant for CXL and the status quo for leaving them masked for
PCIe in general remains.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/20260114182055.46029-10-terry.bowman@amd.com
Co-developed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Restricted CXL Host (RCH) protocol error handling uses a procedure distinct
from the CXL Virtual Hierarchy (VH) handling. This is because of the
differences in the RCH and VH topologies. Improve the maintainability and
add ability to enable/disable RCH handling.
Move and combine the RCH handling code into a single block conditionally
compiled with the CONFIG_CXL_RCH_RAS kernel config.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://patch.msgid.link/20260114182055.46029-9-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
One of the primary reasons for the CXL driver to exist is to perform error
handling. If both PCIEAER and CXL are enabled then light up CXL error
handling as well. Now that all RAS handling is moved under the CXL_RAS
symbol, drop the previous PCIEAER_CXL symbol.
Reviewed-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/20260114182055.46029-14-terry.bowman@amd.com
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Create new config CONFIG_CXL_RAS and put all CXL RAS items behind the
config. The config will depend on CPER and PCIE AER to build. Move the
related VH RAS code from core/pci.c to core/ras.c.
Restricted CXL host (RCH) RAS functions will be moved in a future patch.
Cc: Robert Richter <rrichter@amd.com>
Reviewed-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Co-developed-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260114182055.46029-8-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
The AER driver includes a CXL support function cxl_error_is_native(). This
function adds no additional value from pcie_aer_is_native().
Simplify the codebase by removing cxl_error_is_native() and replace
occurrences of cxl_error_is_native() with pcie_aer_is_native().
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260114182055.46029-7-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
cxl_handle_rdport_cor_ras() and cxl_handle_rdport_ras() are specific
to Restricted CXL Host (RCH) handling. Improve readability and
maintainability by replacing these and instead using the common
cxl_handle_cor_ras() and cxl_handle_ras() functions.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Alejandro Lucero <alucerop@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260114182055.46029-6-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
The CXL driver's cxl_handle_endpoint_cor_ras()/cxl_handle_endpoint_ras()
are unnecessary helper functions used only for Endpoints. Remove these
functions as they are not common for all CXL devices and do not provide
value for EP handling.
Rename __cxl_handle_ras to cxl_handle_ras() and __cxl_handle_cor_ras()
to cxl_handle_cor_ras().
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260114182055.46029-5-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
CXL is a protocol that runs on top of PCIe electricals. Its error model
also runs on top of the PCIe AER error model by standardizing "internal"
errors as "CXL" errors. Linux has historically ignored internal errors.
CXL protocol error handling is then a task of enhancing the PCIe AER
core to understand that PCIe ports (upstream and downstream) and
endpoints may throw internal errors that represent standard CXL protocol
errors.
The proposed method to make that determination is to teach 'struct
pci_dev' to cache when its link has trained the CXL.mem and/or CXL.cache
protocols and then treat all internal errors as CXL errors. A design
goal is to not burden the PCIe AER core with CXL knowledge beyond just
enough to forward error notifications to the CXL RAS core. The forwarded
notification looks up a 'struct cxl_port' or 'struct cxl_dport'
companion device to the PCI device.
Introduce set_pcie_cxl() with logic checking for CXL.mem or CXL.cache
status in the CXL Flex Bus DVSEC status register. The CXL Flex Bus DVSEC
presence is used because it is required for all the CXL PCIe devices.[1]
[1] CXL 3.1 Spec, 8.1.1 PCIe Designated Vendor-Specific Extended
Capability (DVSEC) ID Assignment, Table 8-2
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alejandro Lucero <alucerop@amd.com>
Reviewed-by: Ben Cheatham <benjamin.cheatham@amd.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260114182055.46029-4-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
CXL DVSEC definitions were recently moved into uapi/pci_regs.h, but the
newly added macros do not follow the file's existing naming conventions.
The current format uses CXL_DVSEC_XYZ, while the new CXL entries must
instead use the PCI_DVSEC_CXL_XYZ prefix to match the conventions already
established in pci_regs.h.
The new CXL DVSEC macros also introduce _MASK and _OFFSET suffixes, which
are not used anywhere else in the file. These suffixes lengthen the
identifiers and reduce readability. Remove _MASK and _OFFSET from the
recently added definitions.
Additionally, remove PCI_DVSEC_HEADER1_LENGTH, as it duplicates the existing
PCI_DVSEC_HEADER1_LEN() macro.
Update all existing references to use the new macro names.
Finally, update the inline documentation to reference the latest revision
of the CXL specification.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260114182055.46029-3-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
The CXL DVSECs are currently defined in cxl/core/cxlpci.h. These are not
accessible to other subsystems. Move these to uapi/linux/pci_regs.h.
The CXL DVSEC definitions will be renamed and reformatted to fit better
with existing defines.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260114182055.46029-2-terry.bowman@amd.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
- A couple more fixes for the lib/crypto KUnit tests
- Fix missing MMU protection for the AES S-box
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCaWP6dBQcZWJpZ2dlcnNA
a2VybmVsLm9yZwAKCRDzXCl4vpKOK89sAQCLiV7LQdtHp7IJ21JhdrxPLSfhiUgp
HeSwwFylciRfggD+Ml19H/Pa3kJYbkQChL44AizlartCaiyLuiEfeTF3NQE=
=dYlq
-----END PGP SIGNATURE-----
Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library fixes from Eric Biggers:
- A couple more fixes for the lib/crypto KUnit tests
- Fix missing MMU protection for the AES S-box
* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
lib/crypto: aes: Fix missing MMU protection for AES S-box
MAINTAINERS: add test vector generation scripts to "CRYPTO LIBRARY"
lib/crypto: tests: Fix syntax error for old python versions
lib/crypto: tests: polyval_kunit: Increase iterations for preparekey in IRQs
Here are some small char/misc driver fixes for some reported issues.
Included in here is:
- much reported rust_binder fix
- counter driver fixes
- new device ids for the mei driver
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCaWOjpg8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ylCmACdEcuxjmhVP6Ye7ub22irLxy3h2qYAoJihKZuf
WlNQqB0z2fc/CvfO0xoQ
=/MYq
-----END PGP SIGNATURE-----
Merge tag 'char-misc-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char/misc driver fixes for some reported issues.
Included in here is:
- much reported rust_binder fix
- counter driver fixes
- new device ids for the mei driver
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
rust_binder: remove spin_lock() in rust_shrink_free_page()
mei: me: add nova lake point S DID
counter: 104-quad-8: Fix incorrect return value in IRQ handler
counter: interrupt-cnt: Drop IRQF_NO_THREAD flag
of SEV noinstr methods, to further robustify the code.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=GwVv
-----END PGP SIGNATURE-----
Merge tag 'x86-urgent-2026-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Ingo Molnar:
"Disable GCOV instrumentation in the SEV noinstr.c collection of SEV
noinstr methods, to further robustify the code"
* tag 'x86-urgent-2026-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev: Disable GCOV on noinstr object
- Fix an endianness bug in the gic-v5 irqchip driver
- Revert a broken commit from the riscv-imsic irqchip driver
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=qhAZ
-----END PGP SIGNATURE-----
Merge tag 'irq-urgent-2026-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc irqchip fixes from Ingo Molnar:
- Fix an endianness bug in the gic-v5 irqchip driver
- Revert a broken commit from the riscv-imsic irqchip driver
* tag 'irq-urgent-2026-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "irqchip/riscv-imsic: Embed the vector array in lpriv"
irqchip/gic-v5: Fix gicv5_its_map_event() ITTE read endianness
In a vain attempt to consolidate the email zoo switch everything to the
kernel.org account.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Fix CONFIG_RELOCATABLE=y boots by building Image files from vmlinux,
rather than vmlinux.unstripped, now that the .modinfo section is
included in vmlinux.unstripped.
- Prevent branch predictor poisoning microarchitectural attacks that
use the syscall index as a vector by using array_index_nospec() to
clamp the index after the bounds check (as x86 and ARM64 already
do).
- Fix a crash in test_kprobes when building with Clang.
- Fix a deadlock possible when tracing is enabled for SBI ecalls.
- Fix the definition of the Zk standard RISC-V ISA extension bundle,
which was missing the Zknh extension.
- A few other miscellaneous non-functional cleanups, removing unused
macros, fixing an out-of-date path in code comments, resolving a
compile-time warning for a type mismatch in a pr_crit(), and removing
an unnecessary header file inclusion.
-----BEGIN PGP SIGNATURE-----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=BtHz
-----END PGP SIGNATURE-----
Merge tag 'riscv-for-linus-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley:
"Notable changes include a fix to close one common microarchitectural
attack vector for out-of-order cores. Another patch exposed an
omission in my boot test coverage, which is currently missing
relocatable kernels. Otherwise, the fixes seem to be settling down for
us.
- Fix CONFIG_RELOCATABLE=y boots by building Image files from
vmlinux, rather than vmlinux.unstripped, now that the .modinfo
section is included in vmlinux.unstripped
- Prevent branch predictor poisoning microarchitectural attacks that
use the syscall index as a vector by using array_index_nospec() to
clamp the index after the bounds check (as x86 and ARM64 already
do)
- Fix a crash in test_kprobes when building with Clang
- Fix a deadlock possible when tracing is enabled for SBI ecalls
- Fix the definition of the Zk standard RISC-V ISA extension bundle,
which was missing the Zknh extension
- A few other miscellaneous non-functional cleanups, removing unused
macros, fixing an out-of-date path in code comments, resolving a
compile-time warning for a type mismatch in a pr_crit(), and
removing an unnecessary header file inclusion"
* tag 'riscv-for-linus-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: trace: fix snapshot deadlock with sbi ecall
riscv: remove irqflags.h inclusion in asm/bitops.h
riscv: cpu_ops_sbi: smp_processor_id() returns int, not unsigned int
riscv: configs: Clean up references to non-existing configs
riscv: kexec_image: Fix dead link to boot-image-header.rst
riscv: pgtable: Cleanup useless VA_USER_XXX definitions
riscv: cpufeature: Fix Zk bundled extension missing Zknh
riscv: fix KUnit test_kprobes crash when building with Clang
riscv: Sanitize syscall table indexing under speculation
riscv: boot: Always make Image from vmlinux, not vmlinux.unstripped
- Fix swapped example values for the `family` and `machine` attributes
in the sysfs SoC bus ABI documentation.
- Fix Rust build and intra-doc issues when optional subsystems
(CONFIG_PCI, CONFIG_AUXILIARY_BUS, CONFIG_PRINTK) are disabled.
- Fix typos and incorrect safety comments in Rust PCI, DMA, and device
ID documentation.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQS2q/xV6QjXAdC7k+1FlHeO1qrKLgUCaWK1TwAKCRBFlHeO1qrK
LlNtAP9a2C6HtdumNpYec5bbEIEAHuWIqH8DoypF0jlIP11E6QD+ONnmiWnlRyb+
iJzTXy7EZfV+/zbszWLpQ6qiuX38vgo=
=MZle
-----END PGP SIGNATURE-----
Merge tag 'driver-core-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core fixes from Danilo Krummrich:
- Fix swapped example values for the `family` and `machine` attributes
in the sysfs SoC bus ABI documentation
- Fix Rust build and intra-doc issues when optional subsystems
(CONFIG_PCI, CONFIG_AUXILIARY_BUS, CONFIG_PRINTK) are disabled
- Fix typos and incorrect safety comments in Rust PCI, DMA, and
device ID documentation
* tag 'driver-core-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core:
rust: device: Remove explicit import of CStrExt
rust: pci: fix typos in Bar struct's comments
rust: device: fix broken intra-doc links
rust: dma: fix broken intra-doc links
rust: driver: fix broken intra-doc links to example driver types
rust: device_id: replace incorrect word in safety documentation
rust: dma: remove incorrect safety documentation
docs: ABI: sysfs-devices-soc: Fix swapped sample values
Fixes tracing test_multiple_writes stalls when buffer_size_kb is less
than 12KB.
-----BEGIN PGP SIGNATURE-----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=zuty
-----END PGP SIGNATURE-----
Merge tag 'linux_kselftest-fixes-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fix from Shuah Khan:
"Fix tracing test_multiple_writes stalls when buffer_size_kb is less
than 12KB"
* tag 'linux_kselftest-fixes-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/tracing: Fix test_multiple_writes stall
Including:
- Generic IO-Page-Table code:
- Several Kconfig-related build fixes
- Fix for when gcc 8.5 on PPC refuses to inline a function from a
header file.
-----BEGIN PGP SIGNATURE-----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=h82g
-----END PGP SIGNATURE-----
Merge tag 'iommu-fixes-v6.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iomu fixes from Joerg Roedel:
- several Kconfig-related build fixes
- fix for when gcc 8.5 on PPC refuses to inline a function from a
header file
* tag 'iommu-fixes-v6.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
iommupt: Make pt_feature() always_inline
iommufd/selftest: Prevent module/builtin conflicts in kconfig
iommufd/selftest: Add missing kconfig for DMA_SHARED_BUFFER
iommupt: Fix the kunit building
Sheng Yong reported [1] that Android APEX images didn't work with commit
072a7c7cdb ("erofs: don't bother with s_stack_depth increasing for
now") because "EROFS-formatted APEX file images can be stored within an
EROFS-formatted Android system partition."
In response, I sent a quick fat-fingered [PATCH v3] to address the
report. Unfortunately, the updated condition was incorrect:
if (erofs_is_fileio_mode(sbi)) {
- sb->s_stack_depth =
- file_inode(sbi->dif0.file)->i_sb->s_stack_depth + 1;
- if (sb->s_stack_depth > FILESYSTEM_MAX_STACK_DEPTH) {
- erofs_err(sb, "maximum fs stacking depth exceeded");
+ inode = file_inode(sbi->dif0.file);
+ if ((inode->i_sb->s_op == &erofs_sops && !sb->s_bdev) ||
+ inode->i_sb->s_stack_depth) {
The condition `!sb->s_bdev` is always true for all file-backed EROFS
mounts, making the check effectively a no-op.
The real fix tested and confirmed by Sheng Yong [2] at that time was
[PATCH v3 RESEND], which correctly ensures the following EROFS^2 setup
works:
EROFS (on a block device) + EROFS (file-backed mount)
But sadly I screwed it up again by upstreaming the outdated [PATCH v3].
This patch applies the same logic as the delta between the upstream
[PATCH v3] and the real fix [PATCH v3 RESEND].
Reported-by: Sheng Yong <shengyong1@xiaomi.com>
Closes: https://lore.kernel.org/r/3acec686-4020-4609-aee4-5dae7b9b0093@gmail.com [1]
Fixes: 072a7c7cdb ("erofs: don't bother with s_stack_depth increasing for now")
Link: https://lore.kernel.org/r/243f57b8-246f-47e7-9fb1-27a771e8e9e8@gmail.com [2]
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
gcc 8.5 on powerpc does not automatically inline these functions even
though they evaluate to constants in key cases. Since the constant
propagation is essential for some code elimination and built-time checks
this causes a build failure:
ERROR: modpost: "__pt_no_sw_bit" [drivers/iommu/generic_pt/fmt/iommu_amdv1.ko] undefined!
Caused by this:
if (pts_feature(&pts, PT_FEAT_DMA_INCOHERENT) &&
!pt_test_sw_bit_acquire(&pts,
SW_BIT_CACHE_FLUSH_DONE))
flush_writes_item(&pts);
Where pts_feature() evaluates to a constant false. Mark them as
__always_inline to force it to evaluate to a constant and trigger the code
elimination.
Fixes: 7c5b184db7 ("genpt: Generic Page Table base API")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512230720.9y9DtWIo-lkp@intel.com/
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The selftest now depends on the AMDv1 page table, however the selftest
kconfig itself is just an sub-option of the main IOMMUFD module kconfig.
This means it cannot be modular and so kconfig allowed a modular
IOMMU_PT_AMDV1 with a built in IOMMUFD. This causes link failures:
ld: vmlinux.o: in function `mock_domain_alloc_pgtable.isra.0':
selftest.c:(.text+0x12e8ad3): undefined reference to `pt_iommu_amdv1_init'
ld: vmlinux.o: in function `BSWAP_SHUFB_CTL':
sha1-avx2-asm.o:(.rodata+0xaa36a8): undefined reference to `pt_iommu_amdv1_read_and_clear_dirty'
ld: sha1-avx2-asm.o:(.rodata+0xaa36f0): undefined reference to `pt_iommu_amdv1_map_pages'
ld: sha1-avx2-asm.o:(.rodata+0xaa36f8): undefined reference to `pt_iommu_amdv1_unmap_pages'
ld: sha1-avx2-asm.o:(.rodata+0xaa3720): undefined reference to `pt_iommu_amdv1_iova_to_phys'
Adjust the kconfig to disable IOMMUFD_TEST if IOMMU_PT_AMDV1 is incompatible.
Fixes: e93d5945ed ("iommufd: Change the selftest to use iommupt instead of xarray")
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512210135.freQWpxa-lkp@intel.com/
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
The test doesn't build without it, dma-buf.h does not provide stub
functions if it is not enabled. Compilation can fail with:
ERROR:root:ld: vmlinux.o: in function `iommufd_test':
(.text+0x3b1cdd): undefined reference to `dma_buf_get'
ld: (.text+0x3b1d08): undefined reference to `dma_buf_put'
ld: (.text+0x3b2105): undefined reference to `dma_buf_export'
ld: (.text+0x3b211f): undefined reference to `dma_buf_fd'
ld: (.text+0x3b2e47): undefined reference to `dma_buf_move_notify'
Add the missing select.
Fixes: d2041f1f11 ("iommufd/selftest: Add some tests for the dmabuf flow")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
The kunit doesn't work since the below commit made GENERIC_PT
unselectable:
$ make ARCH=x86_64 O=build_kunit_x86_64 olddefconfig
ERROR:root:Not all Kconfig options selected in kunitconfig were in the generated .config.
This is probably due to unsatisfied dependencies.
Missing: CONFIG_DEBUG_GENERIC_PT=y, CONFIG_IOMMUFD_TEST=y,
CONFIG_IOMMU_PT_X86_64=y, CONFIG_GENERIC_PT=y, CONFIG_IOMMU_PT_AMDV1=y,
CONFIG_IOMMU_PT_VTDSS=y, CONFIG_IOMMU_PT=y, CONFIG_IOMMU_PT_KUNIT_TEST=y
Also remove the unneeded CONFIG_IOMMUFD_TEST reference as the iommupt kunit
doesn't interact with iommufd, and it doesn't currently build for the
kunit due problems with DMA_SHARED buffer either.
Fixes: 01569c216d ("genpt: Make GENERIC_PT invisible")
Fixes: 1dd4187f53 ("iommupt: Add a kunit test for Generic Page Table")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
- Don't bother with s_stack_depth increasing to band-aid
regressions in some composefs mount setups (EROFS + ovl^2)
-----BEGIN PGP SIGNATURE-----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=irvd
-----END PGP SIGNATURE-----
Merge tag 'erofs-for-6.19-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fix from Gao Xiang:
- Don't increase s_stack_depth which caused regressions in some
composefs mount setups (EROFS + ovl^2)
Instead just allow one extra unaccounted fs stacking level for
straightforward cases.
* tag 'erofs-for-6.19-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: don't bother with s_stack_depth increasing for now
Previously, commit d53cd891f0 ("erofs: limit the level of fs stacking
for file-backed mounts") bumped `s_stack_depth` by one to avoid kernel
stack overflow when stacking an unlimited number of EROFS on top of
each other.
This fix breaks composefs mounts, which need EROFS+ovl^2 sometimes
(and such setups are already used in production for quite a long time).
One way to fix this regression is to bump FILESYSTEM_MAX_STACK_DEPTH
from 2 to 3, but proving that this is safe in general is a high bar.
After a long discussion on GitHub issues [1] about possible solutions,
one conclusion is that there is no need to support nesting file-backed
EROFS mounts on stacked filesystems, because there is always the option
to use loopback devices as a fallback.
As a quick fix for the composefs regression for this cycle, instead of
bumping `s_stack_depth` for file backed EROFS mounts, we disallow
nesting file-backed EROFS over EROFS and over filesystems with
`s_stack_depth` > 0.
This works for all known file-backed mount use cases (composefs,
containerd, and Android APEX for some Android vendors), and the fix is
self-contained.
Essentially, we are allowing one extra unaccounted fs stacking level of
EROFS below stacking filesystems, but EROFS can only be used in the read
path (i.e. overlayfs lower layers), which typically has much lower stack
usage than the write path.
We can consider increasing FILESYSTEM_MAX_STACK_DEPTH later, after more
stack usage analysis or using alternative approaches, such as splitting
the `s_stack_depth` limitation according to different combinations of
stacking.
Fixes: d53cd891f0 ("erofs: limit the level of fs stacking for file-backed mounts")
Reported-and-tested-by: Dusty Mabe <dusty@dustymabe.com>
Reported-by: Timothée Ravier <tim@siosm.fr>
Closes: https://github.com/coreos/fedora-coreos-tracker/issues/2087 [1]
Reported-by: "Alekséi Naidénov" <an@digitaltide.io>
Closes: https://lore.kernel.org/r/CAFHtUiYv4+=+JP_-JjARWjo6OwcvBj1wtYN=z0QXwCpec9sXtg@mail.gmail.com
Acked-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Alexander Larsson <alexl@redhat.com>
Reviewed-and-tested-by: Sheng Yong <shengyong1@xiaomi.com>
Reviewed-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
-----BEGIN PGP SIGNATURE-----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=DaMl
-----END PGP SIGNATURE-----
Merge tag 'block-6.19-20260109' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- Kill unlikely checks for blk-rq-qos. These checks are really
all-or-nothing, either the branch is taken all the time, or it's not.
Depending on the configuration, either one of those cases may be
true. Just remove the annotation
- Fix for merging bios with different app tags set
- Fix for a recently introduced slowdown due to RCU synchronization
- Fix for a status change on loop while it's in use, and then a later
fix for that fix
- Fix for the async partition scanning in ublk
* tag 'block-6.19-20260109' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
ublk: fix use-after-free in ublk_partition_scan_work
blk-mq: avoid stall during boot due to synchronize_rcu_expedited
loop: add missing bd_abort_claiming in loop_set_status
block: don't merge bios with different app_tags
blk-rq-qos: Remove unlikely() hints from QoS checks
loop: don't change loop device under exclusive opener in loop_set_status
-----BEGIN PGP SIGNATURE-----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=ObKS
-----END PGP SIGNATURE-----
Merge tag 'io_uring-6.19-20260109' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
"A single fix for a regression introduced in 6.15, where a failure to
wake up idle io-wq workers at ring exit will wait for the timeout to
expire.
This isn't normally noticeable, as the exit is async.
But if a parent task created a thread that sets up a ring and uses
requests that cause io-wq threads to be created, and the parent task
then waits for the thread to exit, then it can take 5 seconds for that
pthread_join() to succeed as the child thread is waiting for its
children to exit.
On top of that, just a basic cleanup as well"
* tag 'io_uring-6.19-20260109' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/io-wq: remove io_wq_for_each_worker() return value
io_uring/io-wq: fix incorrect io_wq_for_each_worker() termination logic
- Do not return false if !preemptible() in current_in_efi(). EFI
runtime services can now run with preemption enabled
- Fix uninitialised variable in the arm MPAM driver, reported by sparse
- Fix partial kasan_reset_tag() use in change_memory_common() when
calculating page indices or comparing ranges
- Save/restore TCR2_EL1 during suspend/resume, otherwise the E0POE bit
is lost
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAmlhSCwACgkQa9axLQDI
XvFj5w/+MUtRj+UL2p2Z2BsQvU6eheiKvvoVYr6kRURlYE1YahXh1lmp8S7t2St5
VYi41VUyT+udAmzIyQvM9GHB1co4d0BPOJcrmU+lKNM5uz/obQ6+Gf8RrHBh6XDM
ZuoEaWB1cRlLQF3NNUNO8IHHW2PwU88jxriZSbq0jnsqFudu1n70XxSH6FH+ilb7
MSkjP1NwaqiA+lTLAL6vCWL0XFA+qgXKMKfUPgW2QwVOM0irPAvmAciXHSwUJe69
W3Fj5UApJVAlwCNkXh6phzwqzorCMshXebVi/Kjxoo8XA/FJ6ezIzjLIsfxTzkgp
GrBW2sAH0xb5BQDsDsihcikKUZBF9Rpf7HtsVaaGcV5yJabo4Yz/cIyKzs9KLfI0
INl9Scno21FK2wqH1dZn+hbLUoRewbtw5+j3HK99Y9b0vNGccHU1g0uS6Kf8Bda3
if8adLIozRz3tcNQn9EWFAlkUYHH8XOKS0kaKTt1VVZWhRRBBTnnFqlDYxQ7Q3WH
t1S1a568UYi6Op0kAHNm5Gl2w0xF3oMQMHnI/hNn94q63m6S/rpvjyoT4Cmg0f0F
xW1Olxlqeve/4Siv5pBrl9SdwQT/0yZsCEqHi1NffDGooQOosXiWYR1xx+PsFRqf
qNvBsREqWkCg/KygtFeDSajrDjOKiN+vsleMR/absogBzvHF8vc=
=GVR8
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Do not return false if !preemptible() in current_in_efi(). EFI
runtime services can now run with preemption enabled
- Fix uninitialised variable in the arm MPAM driver, reported by sparse
- Fix partial kasan_reset_tag() use in change_memory_common() when
calculating page indices or comparing ranges
- Save/restore TCR2_EL1 during suspend/resume, otherwise the E0POE bit
is lost
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Fix cleared E0POE bit after cpu_suspend()/resume()
arm64: mm: Fix incomplete tag reset in change_memory_common()
arm_mpam: Stop using uninitialized variables in __ris_msmon_read()
arm64/efi: Don't fail check current_in_efi() if preemptible
The main code change is a revert of the Raspberry Pi RP1 overlay
support that was decided to not be ready.
The other fixes are all for devicetree sources:
- ethernet configuration on ixp42x-actiontec-mi424wr is
board revision specific
- validation warning fixes for imx27/imx51/imx6, hikey960 and k3
- Minor corrections across imx8 boards, addressing all types of
issues with interrups, dma, ethernet and clock settings, all
simple one-line changes.
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmlhOYAACgkQmmx57+YA
GNlViQ/8CrVllBec/x8Mp7hqTTvRxYSkxnbkPcgqgOLgMyNwg0gZZeA06+EAEJK/
Pqx/Ht86w61A9yZo2OH/p5w6GjmT17J7a0DHYSKjCuW0Dc52ZB+Xqpng2bI92YmL
MjdG4XZ0wJDHCJ2Vt8fHPb06szZAzRyTrDQ4iK1r2/vbOep+4lvXzcS70uKlWYHY
ipIknMork833I5lV434WRhXIg7P/wDfv6U/lXH969pngf2fbxUQipwzHxWZ5OjeE
s1E8ESdJ7QyBhNeMJXIgeNc0jcHV/8jmyxz7D7rkcULpPeo+dNI/l65n6G9j91V/
vt7SarnQbkoWj5Z3skwb7coMJ4P8iVBruqxT9z5yotTDgy8rR4vivwuPqiB0Kahm
gWc00OfdyX9LxBGSdiwq1Ms+tHv2gMrfVkxzI7ppQzRlG+tokD5ZBElM6+cUdMIL
vUoEolm42GIG8FX/QwFLCBqjrZ0b2pI41Bh8UIEBNV4w8qvcJ9BrOGBWKGI4R1uq
vdYSS+jvqdOEsW9q9iWz2EdCSjLHoIf43ljWdYzDt3T9xw+g92b7/8h7drJwf17w
O4nA3G7WFn57lP3YlLmZ/xeR59Zg5i/fC0Za4j5kyu96karn4ySTinxJfOPcqKMb
mhYxs1N0cdp1r/wsXDEAxOCOQS0Yij0oQc16BfDamrsNq13BdjY=
=2kPF
-----END PGP SIGNATURE-----
Merge tag 'soc-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"The main code change is a revert of the Raspberry Pi RP1 overlay
support that was decided to not be ready.
The other fixes are all for devicetree sources:
- ethernet configuration on ixp42x-actiontec-mi424wr is board
revision specific
- validation warning fixes for imx27/imx51/imx6, hikey960 and k3
- Minor corrections across imx8 boards, addressing all types of
issues with interrups, dma, ethernet and clock settings, all simple
one-line changes"
* tag 'soc-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (25 commits)
arm64: dts: hisilicon: hikey960: Drop "snps,gctl-reset-quirk" and "snps,tx_de_emphasis*" properties
Documentation/process: maintainer-soc: Mark 'make' as commands
Documentation/process: maintainer-soc: Be more explicit about defconfig
arm64: dts: mba8mx: Fix Ethernet PHY IRQ support
arm64: dts: imx8qm-ss-dma: correct the dma channels of lpuart
arm64: dts: imx8mp: Fix LAN8740Ai PHY reference clock on DH electronics i.MX8M Plus DHCOM
arm64: dts: freescale: tx8p-ml81: fix eqos nvmem-cells
arm64: dts: freescale: moduline-display: fix compatible
dt-bindings: arm: fsl: moduline-display: fix compatible
ARM: dts: imx6q-ba16: fix RTC interrupt level
arm64: dts: freescale: imx95-toradex-smarc: fix SMARC_SDIO_WP label position
arm64: dts: freescale: imx95-toradex-smarc: use edge trigger for ethphy1 interrupt
arm64: dts: add off-on-delay-us for usdhc2 regulator
arm64: dts: imx8qm-mek: correct the light sensor interrupt type to low level
ARM: dts: nxp: imx: Fix mc13xxx LED node names
arm64: dts: imx95: correct I3C2 pclk to IMX95_CLK_BUSWAKEUP
MAINTAINERS: Fix a linusw mail address
arm64: dts: broadcom: rp1: drop RP1 overlay
arm64: dts: broadcom: bcm2712: fix RP1 endpoint PCI topology
misc: rp1: drop overlay support
...
implementation correctness issues (all marked for stable) and a change
in maintainers for CephFS: Slava and Alex have formally taken over
Xiubo's role.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAmlhPnYTHGlkcnlvbW92
QGdtYWlsLmNvbQAKCRBKf944AhHzi+xRB/4wW8+zp9w+AzK023uL93A9iU4yPM+/
XYRSIhnR0VWdGTwQsSiQmuwT9RVW5ElH1o0Zzt9BBM9XW8BTIyDnCcdd4yYT+fRc
ZCG5JUXF0rRgSXYWTpHfEUg5H0wAFCruhhv51vfAuxe5+AFh+7J2/Ct2SraIMt7r
brShR7vqxUgaBp4TINdsEZBSNBhEIUkPbulZxDDq4+uFN5Cl1ZgESm4QOdxqZFJ8
lkvPRRjh7rpSIUfULSyH6UVvS/FsSjXrL1rhszlGbgwc297ox+UTk+dOfko8gdmL
/l92y6Si5CdCxEwLGHvW4lW7qWj9ba9g8v9DCy1BL6dE+CbY1HSjgtJB
=bROV
-----END PGP SIGNATURE-----
Merge tag 'ceph-for-6.19-rc5' of https://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"A bunch of libceph fixes split evenly between memory safety and
implementation correctness issues (all marked for stable) and a change
in maintainers for CephFS: Slava and Alex have formally taken over
Xiubo's role"
* tag 'ceph-for-6.19-rc5' of https://github.com/ceph/ceph-client:
libceph: make calc_target() set t->paused, not just clear it
libceph: reset sparse-read state in osd_fault()
libceph: return the handler error from mon_handle_auth_done()
libceph: make free_choose_arg_map() resilient to partial allocation
ceph: update co-maintainers list in MAINTAINERS
libceph: replace overzealous BUG_ON in osdmap_apply_incremental()
libceph: prevent potential out-of-bounds reads in handle_auth_done()