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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- a cleanup of arch/x86/kernel/head_64.S removing the pre-built page
tables for Xen guests
- a small comment update
- another cleanup for Xen PVH guests mode
- fix an issue with Xen PV-devices backed by driver domains
* tag 'for-linus-7.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/xenbus: better handle backend crash
xenbus: add xenbus_device parameter to xenbus_read_driver_state()
x86/PVH: Use boot params to pass RSDP address in start_info page
x86/xen: update outdated comment
xen/acpi-processor: fix _CST detection using undersized evaluation buffer
x86/xen: Build identity mapping page tables dynamically for XENPV
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In order to prepare checking the xenbus device status in
xenbus_read_driver_state(), add the pointer to struct xenbus_device
as a parameter.
Tested-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: "Martin K. Petersen" <martin.petersen@oracle.com> # SCSI
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> # drivers/pci/xen-pcifront.c
Signed-off-by: Juergen Gross <jgross@suse.com>
Message-ID: <20260218095205.453657-2-jgross@suse.com>
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Endpoint drivers use dw_pcie_ep_raise_msix_irq() to raise an MSI-X
interrupt to the host using a writel(), which generates a PCI posted write
transaction. There's no completion for posted writes, so the writel() may
return before the PCI write completes. dw_pcie_ep_raise_msix_irq() also
unmaps the outbound ATU entry used for the PCI write, so the write races
with the unmap.
If the PCI write loses the race with the ATU unmap, the write may corrupt
host memory or cause IOMMU errors, e.g., these when running fio with a
larger queue depth against nvmet-pci-epf:
arm-smmu-v3 fc900000.iommu: 0x0000010000000010
arm-smmu-v3 fc900000.iommu: 0x0000020000000000
arm-smmu-v3 fc900000.iommu: 0x000000090000f040
arm-smmu-v3 fc900000.iommu: 0x0000000000000000
arm-smmu-v3 fc900000.iommu: event: F_TRANSLATION client: 0000:01:00.0 sid: 0x100 ssid: 0x0 iova: 0x90000f040 ipa: 0x0
arm-smmu-v3 fc900000.iommu: unpriv data write s1 "Input address caused fault" stag: 0x0
Flush the write by performing a readl() of the same address to ensure that
the write has reached the destination before the ATU entry is unmapped.
The same problem was solved for dw_pcie_ep_raise_msi_irq() in commit
8719c64e76bf ("PCI: dwc: ep: Cache MSI outbound iATU mapping"), but there
it was solved by dedicating an outbound iATU only for MSI. We can't do the
same for MSI-X because each vector can have a different msg_addr and the
msg_addr may be changed while the vector is masked.
Fixes: beb4641a787d ("PCI: dwc: Add MSI-X callbacks handler")
Signed-off-by: Niklas Cassel <cassel@kernel.org>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260211175540.105677-2-cassel@kernel.org
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Endpoint drivers use dw_pcie_ep_raise_msi_irq() to raise MSI interrupts to
the host. After 8719c64e76bf ("PCI: dwc: ep: Cache MSI outbound iATU
mapping"), dw_pcie_ep_raise_msi_irq() caches the Message Address from the
MSI Capability in ep->msi_msg_addr. But that Message Address is controlled
by the host, and it may change. For example, if:
- firmware on the host configures the Message Address and triggers an
MSI,
- a driver on the Endpoint raises the MSI via dw_pcie_ep_raise_msi_irq(),
which caches the Message Address,
- a kernel on the host reconfigures the Message Address and the host
kernel driver triggers another MSI,
dw_pcie_ep_raise_msi_irq() notices that the Message Address no longer
matches the cached ep->msi_msg_addr, warns about it, and returns error
instead of raising the MSI. The host kernel may hang because it never
receives the MSI.
This was seen with the nvmet_pci_epf_driver: the host UEFI performs NVMe
commands, e.g. Identify Controller to get the name of the controller,
nvmet-pci-epf posts the completion queue entry and raises an IRQ using
dw_pcie_ep_raise_msi_irq(). When the host boots Linux, we see a
WARN_ON_ONCE() from dw_pcie_ep_raise_msi_irq(), and the host kernel hangs
because the nvme driver never gets an IRQ.
Remove the warning when dw_pcie_ep_raise_msi_irq() notices that Message
Address has changed, remap using the new address, and update the
ep->msi_msg_addr cache.
Fixes: 8719c64e76bf ("PCI: dwc: ep: Cache MSI outbound iATU mapping")
Signed-off-by: Niklas Cassel <cassel@kernel.org>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Tested-by: Koichiro Den <den@valinux.co.jp>
Acked-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260210181225.3926165-2-cassel@kernel.org
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This converts some of the visually simpler cases that have been split
over multiple lines. I only did the ones that are easy to verify the
resulting diff by having just that final GFP_KERNEL argument on the next
line.
Somebody should probably do a proper coccinelle script for this, but for
me the trivial script actually resulted in an assertion failure in the
middle of the script. I probably had made it a bit _too_ trivial.
So after fighting that far a while I decided to just do some of the
syntactically simpler cases with variations of the previous 'sed'
scripts.
The more syntactically complex multi-line cases would mostly really want
whitespace cleanup anyway.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This is the exact same thing as the 'alloc_obj()' version, only much
smaller because there are a lot fewer users of the *alloc_flex()
interface.
As with alloc_obj() version, this was done entirely with mindless brute
force, using the same script, except using 'flex' in the pattern rather
than 'objs*'.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:
Single allocations: kmalloc(sizeof(TYPE), ...)
are replaced with: kmalloc_obj(TYPE, ...)
Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with: kmalloc_objs(TYPE, COUNT, ...)
Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...)
(where TYPE may also be *VAR)
The resulting allocations no longer return "void *", instead returning
"TYPE *".
Signed-off-by: Kees Cook <kees@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:
- Fix bridge window selection bug that prevented resource assignment
(Kai-Heng Feng)
- Fix bridge window sizing, which failed to assign resources for
windows containing only optional resources (ROMs, SR-IOV BARs, etc)
(Ilpo Järvinen)
- Select CONFIGFS_FS when PCI_EPF_TEST is enabled to avoid a link error
(Arnd Bergmann)
- Fix recently merged Endpoint inbound submapping feature (Koichiro
Den)
* tag 'pci-v7.0-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
PCI: dwc: ep: Always clear IB maps on BAR update
PCI: dwc: ep: Return after clearing BAR-match inbound mapping
PCI: endpoint: pci-epf-test: Select configfs
PCI: Account fully optional bridge windows correctly
PCI: Validate window resource type in pbus_select_window_for_type()
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V updates from Wei Liu:
- Debugfs support for MSHV statistics (Nuno Das Neves)
- Support for the integrated scheduler (Stanislav Kinsburskii)
- Various fixes for MSHV memory management and hypervisor status
handling (Stanislav Kinsburskii)
- Expose more capabilities and flags for MSHV partition management
(Anatol Belski, Muminul Islam, Magnus Kulke)
- Miscellaneous fixes to improve code quality and stability (Carlos
López, Ethan Nelson-Moore, Li RongQing, Michael Kelley, Mukesh
Rathor, Purna Pavan Chandra Aekkaladevi, Stanislav Kinsburskii, Uros
Bizjak)
- PREEMPT_RT fixes for vmbus interrupts (Jan Kiszka)
* tag 'hyperv-next-signed-20260218' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (34 commits)
mshv: Handle insufficient root memory hypervisor statuses
mshv: Handle insufficient contiguous memory hypervisor status
mshv: Introduce hv_deposit_memory helper functions
mshv: Introduce hv_result_needs_memory() helper function
mshv: Add SMT_ENABLED_GUEST partition creation flag
mshv: Add nested virtualization creation flag
Drivers: hv: vmbus: Simplify allocation of vmbus_evt
mshv: expose the scrub partition hypercall
mshv: Add support for integrated scheduler
mshv: Use try_cmpxchg() instead of cmpxchg()
x86/hyperv: Fix error pointer dereference
x86/hyperv: Reserve 3 interrupt vectors used exclusively by MSHV
Drivers: hv: vmbus: Use kthread for vmbus interrupts on PREEMPT_RT
x86/hyperv: Remove ASM_CALL_CONSTRAINT with VMMCALL insn
x86/hyperv: Use savesegment() instead of inline asm() to save segment registers
mshv: fix SRCU protection in irqfd resampler ack handler
mshv: make field names descriptive in a header struct
x86/hyperv: Update comment in hyperv_cleanup()
mshv: clear eventfd counter on irqfd shutdown
x86/hyperv: Use memremap()/memunmap() instead of ioremap_cache()/iounmap()
...
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dw_pcie_ep_set_bar() currently tears down existing inbound mappings only
when either the previous or the new struct pci_epf_bar uses submaps
(num_submap != 0). If both the old and new mappings are BAR Match Mode,
reprogramming the same ATU index is sufficient, so no explicit teardown
was needed.
However, some callers may reuse the same struct pci_epf_bar instance and
update it in place before calling set_bar() again. In that case
ep_func->epf_bar[bar] and the passed-in epf_bar can point to the same
object, so we cannot reliably distinguish BAR Match Mode -> BAR Match Mode
from Address Match Mode -> BAR Match Mode. As a result, the conditional
teardown based on num_submap becomes unreliable and existing inbound maps
may be left active.
Call dw_pcie_ep_clear_ib_maps() unconditionally before reprogramming the
BAR so that in-place updates are handled correctly.
This introduces a behavioral change in a corner case: if a BAR
reprogramming attempt fails (especially for the long-standing BAR Match
Mode -> BAR Match Mode update case), the previously programmed inbound
mapping will already have been torn down. This should be acceptable, since
the caller observes the error and should not use the BAR for any real
transactions in that case.
While at it, document that the existing update parameter check is
best-effort for in-place updates.
Fixes: cc839bef7727 ("PCI: dwc: ep: Support BAR subrange inbound mapping via Address Match Mode iATU")
Signed-off-by: Koichiro Den <den@valinux.co.jp>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Link: https://patch.msgid.link/20260202145407.503348-3-den@valinux.co.jp
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dw_pcie_ep_clear_ib_maps() first checks whether the inbound mapping for a
BAR is in BAR Match Mode (tracked via ep_func->bar_to_atu[bar]). Once
found, the iATU region is disabled and the bookkeeping is cleared.
BAR Match Mode and Address Match Mode mappings are mutually exclusive for a
given BAR, so there is nothing left for the Address Match Mode teardown
path to do after the BAR Match Mode mapping has been removed.
Return early after clearing the BAR Match Mode mapping to avoid running the
Address Match Mode teardown path. This makes the helper's intention
explicit and helps detect incorrect use of pci_epc_set_bar().
Suggested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Koichiro Den <den@valinux.co.jp>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Link: https://patch.msgid.link/20260202145407.503348-2-den@valinux.co.jp
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Like some of the other endpoint modules, pci-epf-test now also uses
configfs, but is missing an indication in Kconfig:
arm-linux-gnueabi-ld: drivers/pci/endpoint/functions/pci-epf-test.o: in function `pci_epf_test_add_cfs':
pci-epf-test.c:(.text.pci_epf_test_add_cfs+0x2c): undefined reference to `config_group_init_type_name'
Select the symbol as needed.
Fixes: ffcc4850a161 ("PCI: endpoint: pci-epf-test: Allow overriding default BAR sizes")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202602180706.VtXkmtqL-lkp@intel.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://patch.msgid.link/20260211070812.4087119-1-arnd@kernel.org
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pbus_size_mem_optional() adds dev_res->add_size of a bridge window into
children_add_size when the window has a non-optional part. However, if the
bridge window is fully optional, only r_size is added (which is zero for
such a window).
Also, a second dev_res entry will be added by pci_dev_res_add_to_list()
into realloc_head for the bridge window (resulting in triggering the
realloc_head-must-be-fully-consumed sanity check after a single pass of the
resource assignment algorithm):
WARNING: drivers/pci/setup-bus.c:2153 at pci_assign_unassigned_root_bus_resources+0xa5/0x260
Correct these problems by always adding dev_res->add_size for bridge
windows and not calling pci_dev_res_add_to_list() if the dev_res entry
exists.
Fixes: 6a5e64c75e82 ("PCI: Add pbus_mem_size_optional() to handle optional sizes")
Reported-by: RavitejaX Veesam <ravitejax.veesam@intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: RavitejaX Veesam <ravitejax.veesam@intel.com>
Link: https://patch.msgid.link/20260218223419.22366-1-ilpo.jarvinen@linux.intel.com
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Pull CXL updates from Dave Jiang:
- Introduce cxl_memdev_attach and pave way for soft reserved handling,
type2 accelerator enabling, and LSA 2.0 enabling. All these series
require the endpoint driver to settle before continuing the memdev
driver probe.
- Address CXL port error protocol handling and reporting.
The large patch series was split into three parts. The first two
parts are included here with the final part coming later.
The first part consists of a series of code refactoring to PCI AER
sub-system that addresses CXL and also CXL RAS code to prepare for
port error handling.
The second part refactors the CXL code to move management of
component registers to cxl_port objects to allow all CXL AER errors
to be handled through the cxl_port hierarchy.
- Provide AMD Zen5 platform address translation for CXL using ACPI
PRMT. This includes a conventions document to explain why this is
needed and how it's implemented.
- Misc CXL patches of fixes, cleanups, and updates. Including CXL
address translation for unaligned MOD3 regions.
[ TLA service: CXL is "Compute Express Link" ]
* tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (59 commits)
cxl: Disable HPA/SPA translation handlers for Normalized Addressing
cxl/region: Factor out code into cxl_region_setup_poison()
cxl/atl: Lock decoders that need address translation
cxl: Enable AMD Zen5 address translation using ACPI PRMT
cxl/acpi: Prepare use of EFI runtime services
cxl: Introduce callback for HPA address ranges translation
cxl/region: Use region data to get the root decoder
cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos()
cxl/region: Separate region parameter setup and region construction
cxl: Simplify cxl_root_ops allocation and handling
cxl/region: Store HPA range in struct cxl_region
cxl/region: Store root decoder in struct cxl_region
cxl/region: Rename misleading variable name @hpa to @hpa_range
Documentation/driver-api/cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement
cxl, doc: Moving conventions in separate files
cxl, doc: Remove isonum.txt inclusion
cxl/port: Unify endpoint and switch port lookup
cxl/port: Move endpoint component register management to cxl_port
cxl/port: Map Port RAS registers
cxl/port: Move dport RAS setup to dport add time
...
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After ebe091ad81e1 ("PCI: Use pbus_select_window_for_type() during IO
window sizing") and ae88d0b9c57f ("PCI: Use pbus_select_window_for_type()
during mem window sizing"), many bridge windows can't get resources
assigned:
pci 0006:05:00.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: can't assign; no space
pci 0006:05:00.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: failed to assign
Those commits replace find_bus_resource_of_type() with
pbus_select_window_for_type(), and the latter lacks resource type
validation.
Add the resource type validation back to pbus_select_window_for_type() to
match the original behavior.
Fixes: 74afce3dfcba ("PCI: Add bridge window selection functions")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=221072
Signed-off-by: Kai-Heng Feng <kaihengf@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://patch.msgid.link/20260210142058.82701-1-kaihengf@nvidia.com
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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Don't try to enable Extended Tags on VFs since that bit is Reserved
and causes misleading log messages (Håkon Bugge)
- Initialize Endpoint Read Completion Boundary to match Root Port,
regardless of ACPI _HPX (Håkon Bugge)
- Apply _HPX PCIe Setting Record only to AER configuration, and only
when OS owns PCIe hotplug but not AER, to avoid clobbering Extended
Tag and Relaxed Ordering settings (Håkon Bugge)
Resource management:
- Move CardBus code to setup-cardbus.c and only build it when
CONFIG_CARDBUS is set (Ilpo Järvinen)
- Fix bridge window alignment with optional resources, where
additional alignment requirement was previously lost (Ilpo
Järvinen)
- Stop over-estimating bridge window size since they are now assigned
without any gaps between them (Ilpo Järvinen)
- Increase resource MAX_IORES_LEVEL to avoid /proc/iomem flattening
for nested bridges and endpoints (Ilpo Järvinen)
- Add pbus_mem_size_optional() to handle sizes of optional resources
(SR-IOV VF BARs, expansion ROMs, bridge windows) (Ilpo Järvinen)
- Don't claim disabled bridge windows to avoid spurious claim
failures (Ilpo Järvinen)
Driver binding:
- Fix device reference leak in pcie_port_remove_service() (Uwe
Kleine-König)
- Move pcie_port_bus_match() and pcie_port_bus_type to PCIe-specific
portdrv.c (Uwe Kleine-König)
- Convert portdrv to use pcie_port_bus_type.probe() and .remove()
callbacks so .probe() and .remove() can eventually be removed from
struct device_driver (Uwe Kleine-König)
Error handling:
- Clear stale errors on reporting agents upon probe so they don't
look like recent errors (Lukas Wunner)
- Add generic RAS tracepoint for hotplug events (Shuai Xue)
- Add RAS tracepoint for link speed changes (Shuai Xue)
Power management:
- Avoid redundant delay on transition from D3hot to D3cold if the
device was already in D3hot (Brian Norris)
- Prevent runtime suspend until devices are fully initialized to
avoid saving incompletely configured device state (Brian Norris)
Power control:
- Add power_on/off callbacks with generic signature to pwrseq,
tc9563, and slot drivers so they can be used by pwrctrl core
(Manivannan Sadhasivam)
- Add PCIe M.2 connector support to the slot pwrctrl driver
(Manivannan Sadhasivam)
- Switch to pwrctrl interfaces to create, destroy, and power on/off
devices, calling them from host controller drivers instead of the
PCI core (Manivannan Sadhasivam)
- Drop qcom .assert_perst() callbacks since this is now done by the
controller driver instead of the pwrctrl driver (Manivannan
Sadhasivam)
Virtualization:
- Remove an incorrect unlock in pci_slot_trylock() error handling
(Jinhui Guo)
- Lock the bridge device for slot reset (Keith Busch)
- Enable ACS after IOMMU configuration on OF platforms so ACS is
enabled an all devices; previously the first device enumerated
(typically a Root Port) didn't have ACS enabled (Manivannan
Sadhasivam)
- Disable ACS Source Validation for IDT 0x80b5 and 0x8090 switches to
work around hardware erratum; previously ACS SV was only
temporarily disabled, which worked for enumeration but not after
reset (Manivannan Sadhasivam)
Peer-to-peer DMA:
- Release per-CPU pgmap ref when vm_insert_page() fails to avoid hang
when removing the PCI device (Hou Tao)
- Remove incorrect p2pmem_alloc_mmap() warning about page refcount
(Hou Tao)
Endpoint framework:
- Add configfs sub-groups synchronously to avoid NULL pointer
dereference when racing with removal (Liu Song)
- Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink()
functions (Manikanta Maddireddy)
ASPEED PCIe controller driver:
- Add ASPEED Root Complex DT binding and driver (Jacky Chou)
Freescale i.MX6 PCIe controller driver:
- Add DT binding and driver support for an optional external refclock
in addition to the refclock from the internal PLL (Richard Zhu)
- Fix CLKREQ# control so host asserts it during enumeration and
Endpoints can use it afterwards to exit the L1.2 link state
(Richard Zhu)
NVIDIA Tegra PCIe controller driver:
- Export irq_domain_free_irqs() to allow PCI/MSI drivers that tear
down MSI domains to be built as modules (Aaron Kling)
- Allow pci-tegra to be built as a module (Aaron Kling)
NVIDIA Tegra194 PCIe controller driver:
- Relax Kconfig so tegra194 can be built for platforms beyond
Tegra194 (Vidya Sagar)
Qualcomm PCIe controller driver:
- Merge SC8180x DT binding into SM8150 (Krzysztof Kozlowski)
- Move SDX55, SDM845, QCS404, IPQ5018, IPQ6018, IPQ8074 Gen3,
IPQ8074, IPQ4019, IPQ9574, APQ8064, MSM8996, APQ8084 to dedicated
schema (Krzysztof Kozlowski)
- Add DT binding and driver support for SA8255p Endpoint being
configured by firmware (Mrinmay Sarkar)
- Parse PERST# from all PCIe bridge nodes for future platforms that
will have PERST# in Switch Downstream Ports as well as in Root
Ports (Manivannan Sadhasivam)
Renesas RZ/G3S PCIe controller driver:
- Use pci_generic_config_write() since the writability provided by
the custom wrapper is unnecessary (Claudiu Beznea)
SOPHGO PCIe controller driver:
- Disable ASPM L0s and L1 on Sophgo 2044 PCIe Root Ports (Inochi
Amaoto)
Synopsys DesignWare PCIe controller driver:
- Extend PCI_FIND_NEXT_CAP() and PCI_FIND_NEXT_EXT_CAP() to return a
pointer to the preceding Capability, to allow removal of
Capabilities that are advertised but not fully implemented (Qiang
Yu)
- Remove MSI and MSI-X Capabilities in platforms that can't support
them, so the PCI core automatically falls back to INTx (Qiang Yu)
- Add ASPM L1.1 and L1.2 Substates context to debugfs ltssm_status
for drivers that support this (Shawn Lin)
- Skip PME_Turn_Off broadcast and L2/L3 transition during suspend if
link is not up to avoid an unnecessary timeout (Manivannan
Sadhasivam)
- Revert dw-rockchip, qcom, and DWC core changes that used link-up
IRQs to trigger enumeration instead of waiting for link to be up
because the PCI core doesn't allocate bus number space for
hierarchies that might be attached (Niklas Cassel)
- Make endpoint iATU entry for MSI permanent instead of programming
it dynamically, which is slow and racy with respect to other
concurrent traffic, e.g., eDMA (Koichiro Den)
- Use iMSI-RX MSI target address when possible to fix endpoints using
32-bit MSI (Shawn Lin)
- Allow DWC host controller driver probe to continue if device is not
found or found but inactive; only fail when there's an error with
the link (Manivannan Sadhasivam)
- For controllers like NXP i.MX6QP and i.MX7D, where LTSSM registers
are not accessible after PME_Turn_Off, simply wait 10ms instead of
polling for L2/L3 Ready (Richard Zhu)
- Use multiple iATU entries to map large bridge windows and DMA
ranges when necessary instead of failing (Samuel Holland)
- Add EPC dynamic_inbound_mapping feature bit for Endpoint
Controllers that can update BAR inbound address translation without
requiring EPF driver to clear/reset the BAR first, and advertise it
for DWC-based Endpoints (Koichiro Den)
- Add EPC subrange_mapping feature bit for Endpoint Controllers that
can map multiple independent inbound regions in a single BAR,
implement subrange mapping, advertise it for DWC-based Endpoints,
and add Endpoint selftests for it (Koichiro Den)
- Make resizable BARs work for Endpoint multi-PF configurations;
previously it only worked for PF 0 (Aksh Garg)
- Fix Endpoint non-PF 0 support for BAR configuration, ATU mappings,
and Address Match Mode (Aksh Garg)
- Set up iATU when ECAM is enabled; previously IO and MEM outbound
windows weren't programmed, and ECAM-related iATU entries weren't
restored after suspend/resume, so config accesses failed (Krishna
Chaitanya Chundru)
Miscellaneous:
- Use system_percpu_wq and WQ_PERCPU to explicitly request per-CPU
work so WQ_UNBOUND can eventually be removed (Marco Crivellari)"
* tag 'pci-v7.0-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (176 commits)
PCI/bwctrl: Disable BW controller on Intel P45 using a quirk
PCI: Disable ACS SV for IDT 0x8090 switch
PCI: Disable ACS SV for IDT 0x80b5 switch
PCI: Cache ACS Capabilities register
PCI: Enable ACS after configuring IOMMU for OF platforms
PCI: Add ACS quirk for Pericom PI7C9X2G404 switches [12d8:b404]
PCI: Add ACS quirk for Qualcomm Hamoa & Glymur
PCI: Use device_lock_assert() to verify device lock is held
PCI: Use lockdep_assert_held(pci_bus_sem) to verify lock is held
PCI: Fix pci_slot_lock () device locking
PCI: Fix pci_slot_trylock() error handling
PCI: Mark Nvidia GB10 to avoid bus reset
PCI: Mark ASM1164 SATA controller to avoid bus reset
PCI: host-generic: Avoid reporting incorrect 'missing reg property' error
PCI/PME: Replace RMW of Root Status register with direct write
PCI/AER: Clear stale errors on reporting agents upon probe
PCI: Don't claim disabled bridge windows
PCI: rzg3s-host: Fix device node reference leak in rzg3s_pcie_host_parse_port()
PCI: dwc: Fix missing iATU setup when ECAM is enabled
PCI: dwc: Clean up iATU index usage in dw_pcie_iatu_setup()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu updates from Joerg Roedel:
"Core changes:
- Rust bindings for IO-pgtable code
- IOMMU page allocation debugging support
- Disable ATS during PCI resets
Intel VT-d changes:
- Skip dev-iotlb flush for inaccessible PCIe device
- Flush cache for PASID table before using it
- Use right invalidation method for SVA and NESTED domains
- Ensure atomicity in context and PASID entry updates
AMD-Vi changes:
- Support for nested translations
- Other minor improvements
ARM-SMMU-v2 changes:
- Configure SoC-specific prefetcher settings for Qualcomm's "MDSS"
ARM-SMMU-v3 changes:
- Improve CMDQ locking fairness for pathetically small queue sizes
- Remove tracking of the IAS as this is only relevant for AArch32 and
was causing C_BAD_STE errors
- Add device-tree support for NVIDIA's CMDQV extension
- Allow some hitless transitions for the 'MEV' and 'EATS' STE fields
- Don't disable ATS for nested S1-bypass nested domains
- Additions to the kunit selftests"
* tag 'iommu-updates-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (54 commits)
iommupt: Always add IOVA range to iotlb_gather in gather_range_pages()
iommu/amd: serialize sequence allocation under concurrent TLB invalidations
iommu/amd: Fix type of type parameter to amd_iommufd_hw_info()
iommu/arm-smmu-v3: Do not set disable_ats unless vSTE is Translate
iommu/arm-smmu-v3-test: Add nested s1bypass/s1dssbypass coverage
iommu/arm-smmu-v3: Mark EATS_TRANS safe when computing the update sequence
iommu/arm-smmu-v3: Mark STE MEV safe when computing the update sequence
iommu/arm-smmu-v3: Add update_safe bits to fix STE update sequence
iommu/arm-smmu-v3: Add device-tree support for CMDQV driver
iommu/tegra241-cmdqv: Decouple driver from ACPI
iommu/arm-smmu-qcom: Restore ACTLR settings for MDSS on sa8775p
iommu/vt-d: Fix race condition during PASID entry replacement
iommu/vt-d: Clear Present bit before tearing down context entry
iommu/vt-d: Clear Present bit before tearing down PASID entry
iommu/vt-d: Flush piotlb for SVM and Nested domain
iommu/vt-d: Flush cache for PASID table before using it
iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode
iommu/vt-d: Skip dev-iotlb flush for inaccessible PCIe device without scalable mode
rust: iommu: fix `srctree` link warning
rust: iommu: fix Rust formatting
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull MSI updates from Thomas Gleixner:
"Updates for the [PCI] MSI subsystem:
- Add interrupt redirection infrastructure
Some PCI controllers use a single demultiplexing interrupt for the
MSI interrupts of subordinate devices.
This prevents setting the interrupt affinity of device interrupts,
which causes device interrupts to be delivered to a single CPU.
That obviously is counterproductive for multi-queue devices and
interrupt balancing.
To work around this limitation the new infrastructure installs a
dummy irq_set_affinity() callback which captures the affinity mask
and picks a redirection target CPU out of the mask.
When the PCI controller demultiplexes the interrupts it invokes a
new handling function in the core, which either runs the interrupt
handler in the context of the target CPU or delegates it to
irq_work on the target CPU.
- Utilize the interrupt redirection mechanism in the PCI DWC host
controller driver.
This allows affinity control for the subordinate device MSI
interrupts instead of being randomly executed on the CPU which runs
the demultiplex handler.
- Replace the binary 64-bit MSI flag with a DMA mask
Some PCI devices have PCI_MSI_FLAGS_64BIT in the MSI capability,
but implement less than 64 address bits. This breaks on platforms
where such a device is assigned an MSI address higher than what's
supported.
With the binary 64-bit flag there is no other choice than disabling
64-bit MSI support which leaves the device disfunctional.
By using a DMA mask the address limit of a device can be described
correctly which provides support for the above scenario.
- Make use of the DMA mask based address limit in the hda/intel and
radeon drivers to enable them on affected platforms
- The usual small cleanups and improvements"
* tag 'irq-msi-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
ALSA: hda/intel: Make MSI address limit based on the device DMA limit
drm/radeon: Make MSI address limit based on the device DMA limit
PCI/MSI: Check the device specific address mask in msi_verify_entries()
PCI/MSI: Convert the boolean no_64bit_msi flag to a DMA address mask
genirq/redirect: Prevent writing MSI message on affinity change
PCI/MSI: Unmap MSI-X region on error
genirq: Update effective affinity for redirected interrupts
PCI: dwc: Enable MSI affinity support
PCI: dwc: Code cleanup
genirq: Add interrupt redirection infrastructure
genirq/msi: Correct kernel-doc in <linux/msi.h>
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git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
- Quirk the broken EFI framebuffer geometry on the Valve Steam Deck
- Capture the EDID information of the primary display also on non-x86
EFI systems when booting via the EFI stub.
* tag 'efi-next-for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi: Support EDID information
sysfb: Move edid_info into sysfb_primary_display
sysfb: Pass sysfb_primary_display to devices
sysfb: Replace screen_info with sysfb_primary_display
sysfb: Add struct sysfb_display_info
efi: sysfb_efi: Reduce number of references to global screen_info
efi: earlycon: Reduce number of references to global screen_info
efi: sysfb_efi: Fix efidrmfb and simpledrmfb on Valve Steam Deck
efi: sysfb_efi: Convert swap width and height quirk to a callback
efi: sysfb_efi: Fix lfb_linelength calculation when applying quirks
efi: sysfb_efi: Replace open coded swap with the macro
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git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks
Pull kthread updates from Frederic Weisbecker:
"The kthread code provides an infrastructure which manages the
preferred affinity of unbound kthreads (node or custom cpumask)
against housekeeping (CPU isolation) constraints and CPU hotplug
events.
One crucial missing piece is the handling of cpuset: when an isolated
partition is created, deleted, or its CPUs updated, all the unbound
kthreads in the top cpuset become indifferently affine to _all_ the
non-isolated CPUs, possibly breaking their preferred affinity along
the way.
Solve this with performing the kthreads affinity update from cpuset to
the kthreads consolidated relevant code instead so that preferred
affinities are honoured and applied against the updated cpuset
isolated partitions.
The dispatch of the new isolated cpumasks to timers, workqueues and
kthreads is performed by housekeeping, as per the nice Tejun's
suggestion.
As a welcome side effect, HK_TYPE_DOMAIN then integrates both the set
from boot defined domain isolation (through isolcpus=) and cpuset
isolated partitions. Housekeeping cpumasks are now modifiable with a
specific RCU based synchronization. A big step toward making
nohz_full= also mutable through cpuset in the future"
* tag 'kthread-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks: (33 commits)
doc: Add housekeeping documentation
kthread: Document kthread_affine_preferred()
kthread: Comment on the purpose and placement of kthread_affine_node() call
kthread: Honour kthreads preferred affinity after cpuset changes
sched/arm64: Move fallback task cpumask to HK_TYPE_DOMAIN
sched: Switch the fallback task allowed cpumask to HK_TYPE_DOMAIN
kthread: Rely on HK_TYPE_DOMAIN for preferred affinity management
kthread: Include kthreadd to the managed affinity list
kthread: Include unbound kthreads in the managed affinity list
kthread: Refine naming of affinity related fields
PCI: Remove superfluous HK_TYPE_WQ check
sched/isolation: Remove HK_TYPE_TICK test from cpu_is_isolated()
cpuset: Remove cpuset_cpu_is_isolated()
timers/migration: Remove superfluous cpuset isolation test
cpuset: Propagate cpuset isolation update to timers through housekeeping
cpuset: Propagate cpuset isolation update to workqueue through housekeeping
PCI: Flush PCI probe workqueue on cpuset isolated partition change
sched/isolation: Flush vmstat workqueues on cpuset isolated partition change
sched/isolation: Flush memcg workqueues on cpuset isolated partition change
cpuset: Update HK_TYPE_DOMAIN cpumask from cpuset
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"This one is significantly larger than previous ACPI support pull
requests because several significant updates have coincided in it.
First, there is a routine ACPICA code update, to upstream version
20251212, but this time it covers new ACPI 6.6 material that has not
been covered yet. Among other things, it includes definitions of a few
new ACPI tables and updates of some others, like the GICv5 MADT
structures and ARM IORT IWB node definitions that are used for adding
GICv5 ACPI probing on ARM (that technically is IRQ subsystem material,
but it depends on the ACPICA changes, so it is included here). The
latter alone adds a few hundred lines of new code.
Second, there is an update of ACPI _OSC handling including a fix that
prevents failures from occurring in some corner cases due to careless
handling of _OSC error bits.
On top of that, the "system resource" ACPI device objects with the
PNP0C01 and PNP0C02 are now going to be handled by the ACPI core
device enumeration code instead of handing them over to the legacy PNP
system driver which causes device enumeration issues to occur. Some of
those issues have been worked around in device drivers and elsewhere
and those workarounds should not be necessary any more, so they are
going away.
Moreover, the time has come to convert all "core ACPI" device drivers
that were still using struct acpi_driver objects for device binding
into proper platform drivers that use struct platform_driver for this
purpose. These updates are accompanied by some requisite core ACPI
device enumeration code changes.
Next, there are ACPI APEI updates, including changes to avoid excess
overhead in the NMI handler and in SEA on the ARM side, changes to
unify ACPI-based HW error tracing and logging, and changes to prevent
APEI code from reaching out of its allocated memory.
There are also some ACPI power management updates, mostly related to
the ACPI cpuidle support in the processor driver, suspend-to-idle
handling on systems with ACPI support and to ACPI PM of devices.
In addition to the above, bugs are fixed and the code is cleaned up in
assorted places all over.
Specifics:
- Update the ACPICA code in the kernel to upstream version 20251212
which includes the following changes:
* Add support for new ACPI table DTPR (Michal Camacho Romero)
* Release objects with acpi_ut_delete_object_desc() (Zilin Guan)
* Add UUIDs for Microsoft fan extensions and UUIDs associated with
TPM 2.0 devices (Armin Wolf)
* Fix NULL pointer dereference in acpi_ev_address_space_dispatch()
(Alexey Simakov)
* Add KEYP ACPI table definition (Dave Jiang)
* Add support for the Microsoft display mux _OSI string (Armin
Wolf)
* Add definitions for the IOVT ACPI table (Xianglai Li)
* Abort AML bytecode execution on AML_FATAL_OP (Armin Wolf)
* Include all fields in subtable type1 for PPTT (Ben Horgan)
* Add GICv5 MADT structures and Arm IORT IWB node definitions
(Jose Marinho)
* Update Parameter Block structure for RAS2 and add a new flag in
Memory Affinity Structure for SRAT (Pawel Chmielewski)
* Add _VDM (Voltage Domain) object (Pawel Chmielewski)
- Add support for GICv5 ACPI probing on ARM which is based on the
GICv5 MADT structures and ARM IORT IWB node definitions recently
added to ACPICA (Lorenzo Pieralisi)
- Rework ACPI PM notification setup for PCI root buses and modify the
ACPI PM setup for devices to register wakeup source objects under
physical (that is, PCI, platform, etc.) devices instead of doing
that under their ACPI companions (Rafael Wysocki)
- Adjust debug messages regarding postponed ACPI PM printed during
system resume to be more accurate (Rafael Wysocki)
- Remove dead code from lps0_device_attach() (Gergo Koteles)
- Start to invoke Microsoft Function 9 (Turn On Display) of the Low-
Power S0 Idle (LPS0) _DSM in the suspend-to-idle resume flow on
systems with ACPI LPS0 support to address a functional issue on
Lenovo Yoga Slim 7i Aura (15ILL9), where system fans and keyboard
backlights fail to resume after suspend (Jakob Riemenschneider)
- Add sysfs attribute cid for exposing _CID lists under ACPI device
objects (Rafael Wysocki)
- Replace sprintf() with sysfs_emit() in all of the core ACPI sysfs
interface code (Sumeet Pawnikar)
- Use acpi_get_local_u64_address() in the code implementing ACPI
support for PCI to evaluate _ADR instead of evaluating that object
directly (Andy Shevchenko)
- Add JWIPC JVC9100 to irq1_level_low_skip_override[] to unbreak
serial IRQs on that system (Ai Chao)
- Fix handling of _OSC errors in acpi_run_osc() to avoid failures on
systems where _OSC error bits are set even though the _OSC return
buffer contains acknowledged feature bits (Rafael Wysocki)
- Clean up and rearrange \_SB._OSC handling for general platform
features and USB4 features to avoid code duplication and
unnecessary memory management overhead (Rafael Wysocki)
- Make the ACPI core device enumeration code handle PNP0C01 and
PNP0C02 ("system resource") device objects directly instead of
letting the legacy PNP system driver handle them to avoid device
enumeration issues on systems where PNP0C02 is present in the _CID
list under ACPI device objects with a _HID matching a proper device
driver in Linux (Rafael Wysocki)
- Drop workarounds for the known device enumeration issues related to
_CID lists containing PNP0C02 (Rafael Wysocki)
- Drop outdated comment regarding removed function in the ACPI-based
device enumeration code (Julia Lawall)
- Make PRP0001 device matching work as expected for ACPI device
objects using it as a _HID for board development and similar
purposes (Kartik Rajput)
- Use async schedule function in acpi_scan_clear_dep_fn() to avoid
races with user space initialization on some systems (Yicong Yang)
- Add a piece of documentation explaining why binding drivers
directly to ACPI device objects is not a good idea in general and
why it is desirable to convert drivers doing so into proper
platform drivers that use struct platform_driver for device binding
(Rafael Wysocki)
- Convert multiple "core ACPI" drivers, including the NFIT ACPI
device driver, the generic ACPI button drivers, the generic ACPI
thermal zone driver, the ACPI hardware event device (HED) driver,
the ACPI EC driver, the ACPI SMBUS HC driver, the ACPI Smart
Battery Subsystem (SBS) driver, and the ACPI backlight (video)
driver to proper platform drivers that use struct platform_driver
for device binding (Rafael Wysocki)
- Use acpi_get_local_u64_address() in the ACPI backlight (video)
driver to evaluate _ADR instead of evaluating that object directly
(Andy Shevchenko)
- Convert the generic ACPI battery driver to a proper platform driver
using struct platform_driver for device binding (Rafael Wysocki)
- Fix incorrect charging status when current is zero in the generic
ACPI battery driver (Ata İlhan Köktürk)
- Use LIST_HEAD() for initializing a stack-allocated list in the
generic ACPI watchdog device driver (Can Peng)
- Rework the ACPI idle driver initialization to register it directly
from the common initialization code instead of doing that from a
CPU hotplug "online" callback and clean it up (Huisong Li, Rafael
Wysocki)
- Fix a possible NULL pointer dereference in
acpi_processor_errata_piix4() (Tuo Li)
- Make read-only array non_mmio_desc[] static const (Colin Ian King)
- Prevent the APEI GHES support code on ARM from accessing memory out
of bounds or going past the ARM processor CPER record buffer (Mauro
Carvalho Chehab)
- Prevent cper_print_fw_err() from dumping the entire memory on
systems with defective firmware (Mauro Carvalho Chehab)
- Improve ghes_notify_nmi() status check to avoid unnecessary
overhead in the NMI handler by carrying out all of the requisite
preparations and the NMI registration time (Tony Luck)
- Refactor the GHES driver by extracting common functionality into
reusable helper functions to reduce code duplication and improve
the ghes_notify_sea() status check in analogy with the previous
ghes_notify_nmi() status check improvement (Shuai Xue)
- Make ELOG and GHES log and trace consistently and support the CPER
CXL protocol analogously (Fabio De Francesco)
- Disable KASAN instrumentation in the APEI GHES driver when compile
testing with clang < 18 (Nathan Chancellor)
- Let ghes_edac be the preferred driver to load on __ZX__ and _BYO_
systems by extending the platform detection list in the APEI GHES
driver (Tony W Wang-oc)
- Clean up cppc_perf_caps and cppc_perf_ctrls structs and rename EPP
constants for clarity in the ACPI CPPC library (Sumit Gupta)"
* tag 'acpi-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (117 commits)
ACPI: battery: fix incorrect charging status when current is zero
ACPI: scan: Use async schedule function in acpi_scan_clear_dep_fn()
ACPI: x86: s2idle: Invoke Microsoft _DSM Function 9 (Turn On Display)
ACPI: APEI: GHES: Add ghes_edac support for __ZX__ and _BYO_ systems
ACPI: APEI: GHES: Disable KASAN instrumentation when compile testing with clang < 18
ACPI: sysfs: Replace sprintf() with sysfs_emit()
ACPI: CPPC: Rename EPP constants for clarity
ACPI: CPPC: Clean up cppc_perf_caps and cppc_perf_ctrls structs
ACPI: processor: idle: Rework the handling of acpi_processor_ffh_lpi_probe()
ACPI: processor: idle: Convert acpi_processor_setup_cpuidle_dev() to void
ACPI: processor: idle: Convert acpi_processor_setup_cpuidle_states() to void
irqchip/gic-v5: Add ACPI IWB probing
irqchip/gic-v5: Add ACPI ITS probing
irqchip/gic-v5: Add ACPI IRS probing
irqchip/gic-v5: Split IRS probing into OF and generic portions
PCI/MSI: Make the pci_msi_map_rid_ctlr_node() interface firmware agnostic
irqdomain: Add parent field to struct irqchip_fwid
ACPI: PCI: simplify code with acpi_get_local_u64_address()
ACPI: video: simplify code with acpi_get_local_u64_address()
ACPI: PM: Adjust messages regarding postponed ACPI PM
...
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- Fix documentation typos (Shawn Lin)
- Add struct p2pdma_provider kernel doc (Leon Romanovsky)
- Remove useless devres WARN_ON() (Philipp Stanner)
* pci/misc:
PCI: Remove useless WARN_ON() from devres
PCI/P2PDMA: Add missing struct p2pdma_provider documentation
Documentation: PCI: Fix typos in msi-howto.rst
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- Add rcar-host OF Kconfig dependency to avoid objtool no-cfi warning
(Nathan Chancellor)
* pci/controller/misc:
PCI: rcar-host: Add OF Kconfig dependency to avoid objtool no-cfi warning
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- Fix IRQ domain leak when MSI allocation fails (Haotian Zhang)
* pci/controller/xilinx:
PCI: xilinx: Fix INTx IRQ domain leak in error paths
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- Relax Kconfig so tegra194 can be built for platforms beyond Tegra194
(Vidya Sagar)
* pci/controller/tegra194:
PCI: dwc: tegra194: Broaden architecture dependency
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- Export irq_domain_free_irqs() to allow PCI/MSI drivers that tear down
MSI domains to be built as modules (Aaron Kling)
- Export tegra_cpuidle_pcie_irqs_in_use(), which disables Tegra CC6 while
PCI IRQs are in use, so pci-tegra can be built as a module (Aaron Kling)
- Allow pci-tegra to be built as a module (Aaron Kling)
* pci/controller/tegra:
PCI: tegra: Allow building as a module
cpuidle: tegra: Export tegra_cpuidle_pcie_irqs_in_use()
irqdomain: Export irq_domain_free_irqs()
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- Use pci_generic_config_write(), not custom wrapper, since we don't need
the writability provided by the wrapper (Claudiu Beznea)
- Drop lock around RZG3S_PCI_MSIRS and RZG3S_PCI_PINTRCVIS updates since
they are RW1C registers (Claudiu Beznea)
- Fix a device node reference leak in rzg3s_pcie_host_parse_port() (Felix
Gu)
* pci/controller/rzg3s-host:
PCI: rzg3s-host: Fix device node reference leak in rzg3s_pcie_host_parse_port()
PCI: rzg3s-host: Drop the lock on RZG3S_PCI_MSIRS and RZG3S_PCI_PINTRCVIS
PCI: rzg3s-host: Use pci_generic_config_write() for the root bus
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- Use regulator APIs to control the 3v3 power supply of PCIe slots (Hal
Feng)
* pci/controller/plda-starfive:
PCI: starfive: Use regulator APIs to control the 3v3 power supply of PCIe slots
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- Fix IRQ domain leak when MSI allocation fails (Haotian Zhang)
* pci/controller/mediatek:
PCI: mediatek: Fix IRQ domain leak when MSI allocation fails
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- Reword 'reg' property error message to account for both missing and
malformed properties (Jess)
* pci/controller/generic:
PCI: host-generic: Avoid reporting incorrect 'missing reg property' error
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- Disable L0s and L1 on Sophgo 2044 PCIe Root Ports (Inochi Amaoto)
* pci/controller/dwc-sophgo:
PCI: sophgo: Disable L0s and L1 on Sophgo 2044 PCIe Root Ports
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- Disable unused BAR 0 and BAR 1 for Root Port (Shawn Lin)
* pci/controller/dwc-rockchip:
PCI: dw-rockchip: Disable BAR 0 and BAR 1 for Root Port
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- Add DT binding and driver support for SA8255p Endpoint being managed by
firmware (Mrinmay Sarkar)
* pci/controller/dwc-qcom-ep:
PCI: qcom-ep: Add support for firmware-managed PCIe Endpoint
dt-bindings: PCI: qcom,sa8255p-pcie-ep: Document firmware managed PCIe endpoint
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- Parse PERST# from all PCIe bridge nodes for future platforms that will
have PERST# in Switch Downstream Ports as well as in Root Ports
(Manivannan Sadhasivam)
- Rename qcom PERST# assert/deassert helpers, e.g., qcom_ep_reset_assert(),
to avoid confusion with Endpoint interfaces (Manivannan Sadhasivam)
* pci/controller/dwc-qcom:
PCI: qcom: Rename PERST# assert/deassert helpers for uniformity
PCI: qcom: Parse PERST# from all PCIe bridge nodes
# Conflicts:
# drivers/pci/controller/dwc/pcie-qcom.c
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* pci/controller/dwc-nxp-s32g:
PCI: s32g: Skip Root Port removal during success
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- Add DT binding and driver support for an optional external refclock in
addition to the refclock from the internal PLL (Richard Zhu)
- Apply i.MX95 ERR051586 erratum workaround (release CLKREQ# so endpoint
can assert it when required) during resume (Richard Zhu)
- Enable i.MX95 REFCLK by overriding CLKREQ# so it's driven by default
(Richard Zhu)
- Clear CLKREQ# override if link is up and DT says 'supports-clkreq' so
endpoints can use CLKREQ# to exit the L1.2 state (Richard Zhu)
* pci/controller/dwc-imx6:
PCI: imx6: Clear CLKREQ# override if 'supports-clkreq' DT property is available
PCI: imx6: Add CLKREQ# override to enable REFCLK for i.MX95 PCIe
PCI: dwc: Invoke post_init in dw_pcie_resume_noirq()
PCI: imx6: Add external reference clock input mode support
dt-bindings: PCI: pci-imx6: Add external reference clock input
dt-bindings: PCI: dwc: Add external reference clock input
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- Extend PCI_FIND_NEXT_CAP() and PCI_FIND_NEXT_EXT_CAP() to return a
pointer to the preceding Capability (Qiang Yu)
- Add dw_pcie_remove_capability() and dw_pcie_remove_ext_capability() to
remove Capabilities that are advertised but not fully implemented (Qiang
Yu)
- Remove MSI and MSI-X Capabilities for DWC controllers in platforms that
can't support them, so we automatically fall back to INTx (Qiang Yu)
- Remove MSI-X and DPC Capabilities for Qualcomm platforms that advertise
but don't support them (Qiang Yu)
- Remove duplicate dw_pcie_ep_hide_ext_capability() function and replace
with dw_pcie_remove_ext_capability() (Qiang Yu)
- Add ASPM L1.1 and L1.2 Substates context to debugfs ltssm_status for
drivers that support this (Shawn Lin)
- Skip PME_Turn_Off broadcast and L2/L3 transition during suspend if link
is not up to avoid an unnecessary timeout (Manivannan Sadhasivam)
- Revert dw-rockchip, qcom, and DWC core changes that used link-up IRQs to
trigger enumeration instead of waiting for link to be up because the PCI
core doesn't allocate bus number space for hierarchies that might be
attached (Niklas Cassel)
- Make endpoint iATU entry for MSI permanent instead of programming it
dynamically, which is slow and racy with respect to other concurrent
traffic, e.g., eDMA (Koichiro Den)
- Use iMSI-RX MSI target address when possible to fix endpoints using
32-bit MSI (Shawn Lin)
- Make dw_pcie_ltssm_status_string() available and use it for logging
errors in dw_pcie_wait_for_link() (Manivannan Sadhasivam)
- Return -ENODEV when dw_pcie_wait_for_link() finds no devices, -EIO for
device present but inactive, -ETIMEDOUT for other failures, so callers
can handle these cases differently (Manivannan Sadhasivam)
- Allow DWC host controller driver probe to continue if device is not found
or found but inactive; only fail when there's an error with the link
(Manivannan Sadhasivam)
- For controllers like NXP i.MX6QP and i.MX7D, where LTSSM registers are
not accessible after PME_Turn_Off, simply wait 10ms instead of polling
for L2/L3 Ready (Richard Zhu)
- Use multiple iATU entries to map large bridge windows and DMA ranges when
necessary instead of failing (Samuel Holland)
- Rename struct dw_pcie_rp.has_msi_ctrl to .use_imsi_rx for clarity (Qiang
Yu)
- Add EPC dynamic_inbound_mapping feature bit for Endpoint Controllers that
can update BAR inbound address translation without requiring EPF driver
to clear/reset the BAR first, and advertise it for DWC-based Endpoints
(Koichiro Den)
- Add EPC subrange_mapping feature bit for Endpoint Controllers that can
map multiple independent inbound regions in a single BAR, implement
subrange mapping, advertise it for DWC-based Endpoints, and add Endpoint
selftests for it (Koichiro Den)
- Allow overriding default BAR sizes for pci-epf-test (Niklas Cassel)
- Make resizable BARs work for Endpoint multi-PF configurations; previously
it only worked for PF 0 (Aksh Garg)
- Fix Endpoint non-PF 0 support for BAR configuration, ATU mappings, and
Address Match Mode (Aksh Garg)
- Fix issues with outbound iATU index assignment that caused iATU index to
be out of bounds (Niklas Cassel)
- Clean up iATU index tracking to be consistent (Niklas Cassel)
- Set up iATU when ECAM is enabled; previously IO and MEM outbound windows
weren't programmed, and ECAM-related iATU entries weren't restored after
suspend/resume, so config accesses failed (Krishna Chaitanya Chundru)
* pci/controller/dwc:
PCI: dwc: Fix missing iATU setup when ECAM is enabled
PCI: dwc: Clean up iATU index usage in dw_pcie_iatu_setup()
PCI: dwc: Fix msg_atu_index assignment
PCI: dwc: ep: Add comment explaining controller level PTM access in multi PF setup
PCI: dwc: ep: Add per-PF BAR and inbound ATU mapping support
PCI: dwc: ep: Fix resizable BAR support for multi-PF configurations
PCI: endpoint: pci-epf-test: Allow overriding default BAR sizes
selftests: pci_endpoint: Add BAR subrange mapping test case
misc: pci_endpoint_test: Add BAR subrange mapping test case
PCI: endpoint: pci-epf-test: Add BAR subrange mapping test support
Documentation: PCI: endpoint: Clarify pci_epc_set_bar() usage
PCI: dwc: ep: Support BAR subrange inbound mapping via Address Match Mode iATU
PCI: dwc: Advertise dynamic inbound mapping support
PCI: endpoint: Add BAR subrange mapping support
PCI: endpoint: Add dynamic_inbound_mapping EPC feature
PCI: dwc: Rename dw_pcie_rp::has_msi_ctrl to dw_pcie_rp::use_imsi_rx for clarity
PCI: dwc: Fix grammar and formatting for comment in dw_pcie_remove_ext_capability()
PCI: dwc: Use multiple iATU windows for mapping large bridge windows and DMA ranges
PCI: dwc: Remove duplicate dw_pcie_ep_hide_ext_capability() function
PCI: dwc: Skip waiting for L2/L3 Ready if dw_pcie_rp::skip_l23_wait is true
PCI: dwc: Fail dw_pcie_host_init() if dw_pcie_wait_for_link() returns -ETIMEDOUT
PCI: dwc: Rework the error print of dw_pcie_wait_for_link()
PCI: dwc: Rename and move ltssm_status_string() to pcie-designware.c
PCI: dwc: Return -EIO from dw_pcie_wait_for_link() if device is not active
PCI: dwc: Return -ENODEV from dw_pcie_wait_for_link() if device is not found
PCI: dwc: Use cfg0_base as iMSI-RX target address to support 32-bit MSI devices
PCI: dwc: ep: Cache MSI outbound iATU mapping
Revert "PCI: dwc: Don't wait for link up if driver can detect Link Up event"
Revert "PCI: qcom: Enumerate endpoints based on Link up event in 'global_irq' interrupt"
Revert "PCI: qcom: Enable MSI interrupts together with Link up if 'Global IRQ' is supported"
Revert "PCI: qcom: Don't wait for link if we can detect Link Up"
Revert "PCI: dw-rockchip: Enumerate endpoints based on dll_link_up IRQ"
Revert "PCI: dw-rockchip: Don't wait for link since we can detect Link Up"
PCI: dwc: Skip PME_Turn_Off broadcast and L2/L3 transition during suspend if link is not up
PCI: dw-rockchip: Change get_ltssm() to provide L1 Substates info
PCI: dwc: Add L1 Substates context to ltssm_status of debugfs
PCI: qcom: Remove DPC Extended Capability
PCI: qcom: Remove MSI-X Capability for Root Ports
PCI: dwc: Remove MSI/MSIX capability for Root Port if iMSI-RX is used as MSI controller
PCI: dwc: Add new APIs to remove standard and extended Capability
PCI: Add preceding capability position support in PCI_FIND_NEXT_*_CAP macros
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- Add config guards to fix build error when sg2042 is a module but j721e is
built-in (Siddharth Vadapalli)
* pci/controller/cadence-j721e:
PCI: j721e: Add config guards for Cadence Host and Endpoint library APIs
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- Fix cdns_pcie_host_dma_ranges_cmp() to prevent possible invalid sort
order (Ian Rogers)
* pci/controller/cadence:
PCI: cadence: Avoid signed 64-bit truncation and invalid sort
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- Add ASPEED Root Complex DT binding and driver (Jacky Chou)
* pci/controller/aspeed:
MAINTAINERS: Add ASPEED PCIe RC driver
PCI: aspeed: Add ASPEED PCIe RC driver
PCI: Add FMT, TYPE and CPL status definition for TLP header
dt-bindings: PCI: Add ASPEED PCIe RC support
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- Add WQ_PERCPU to alloc_workqueue() users (Marco Crivellari)
- Replace use of system_wq with system_percpu_wq (Marco Crivellari)
- Check for failure of alloc_workqueue() to avoid NULL pointer dereferences
(Haotian Zhang)
* pci/workqueue:
PCI: endpoint: Add missing NULL check for alloc_workqueue()
PCI: endpoint: Replace use of system_wq with system_percpu_wq
PCI: Add WQ_PERCPU to alloc_workqueue() users
# Conflicts:
# drivers/pci/endpoint/pci-ep-cfs.c
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- Mark ASM1164 SATA controller to avoid bus reset since it fails to train
the Link after reset (Alex Williamson)
- Mark Nvidia GB10 Root Ports to avoid bus reset since they may fail to
retrain the link after reset (Johnny-CC Chang)
- Add lockdep and other lock assertions (Ilpo Järvinen)
- Add ACS quirk for Qualcomm Hamoa & Glymur, which provides ACS-like
features but doesn't advertise an ACS Capability (Krishna Chaitanya
Chundru)
- Add ACS quirk for Pericom PI7C9X2G404 switches, which fail under load
when P2P Redirect Request is enabled (Nicolas Cavallari)
- Remove an incorrect unlock in pci_slot_trylock() error handling (Jinhui
Guo)
- Lock the bridge device for slot reset (Keith Busch)
- Enable ACS after IOMMU configuration on OF platforms so ACS is enabled an
all devices; previously the first device enumeration (typically a Root
Port) was omitted (Manivannan Sadhasivam)
- Disable ACS Source Validation for IDT 0x80b5 and 0x8090 switches to work
around hardware erratum; previously ACS SV was temporarily disabled,
which worked for enumeration but not after reset (Manivannan Sadhasivam)
* pci/virtualization:
PCI: Disable ACS SV for IDT 0x8090 switch
PCI: Disable ACS SV for IDT 0x80b5 switch
PCI: Cache ACS Capabilities register
PCI: Enable ACS after configuring IOMMU for OF platforms
PCI: Add ACS quirk for Pericom PI7C9X2G404 switches [12d8:b404]
PCI: Add ACS quirk for Qualcomm Hamoa & Glymur
PCI: Use device_lock_assert() to verify device lock is held
PCI: Use lockdep_assert_held(pci_bus_sem) to verify lock is held
PCI: Fix pci_slot_lock () device locking
PCI: Fix pci_slot_trylock() error handling
PCI: Mark Nvidia GB10 to avoid bus reset
PCI: Mark ASM1164 SATA controller to avoid bus reset
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- Add generic RAS tracepoint for hotplug events (Shuai Xue)
- Add RAS tracepoint for link speed changes (Shuai Xue)
* pci/trace:
Documentation: tracing: Add PCI tracepoint documentation
PCI: trace: Add RAS tracepoint to monitor link speed changes
PCI: trace: Add generic RAS tracepoint for hotplug event
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- Build zero-sized resources when a BAR is larger than 4G but
pci_bus_addr_t or resource_size_t can't represent 64-bit addresses (Ilpo
Järvinen)
- Fix bridge window alignment with optional resources, where we previously
lost the additional alignment requirement (Ilpo Järvinen)
- Stop over-estimating bridge window size since we now assign them without
any gaps between them (Ilpo Järvinen)
- Increase resource MAX_IORES_LEVEL to avoid /proc/iomem flattening for
nested bridges and endpoints (Ilpo Järvinen)
- Remove old_size limit from bridge window sizing (Ilpo Järvinen)
- Push realloc check into pbus_size_mem() to simplify callers (Ilpo
Järvinen)
- Pass bridge window resource to pbus_size_mem() to avoid looking it up
again (Ilpo Järvinen)
- Use res_to_dev_res() instead of open-coding the same search (Ilpo
Järvinen)
- Add pci_resource_is_bridge_win() helper (Ilpo Järvinen)
- Add more logging of resource assignment (Ilpo Järvinen)
- Add pbus_mem_size_optional() to handle sizes of optional resources
(SR-IOV VF BARs, expansion ROMs, bridge windows) (Ilpo Järvinen)
- Move CardBus code to setup-cardbus.c and only build it when
CONFIG_CARDBUS is set (Ilpo Järvinen)
- Use scnprintf() instead of sprintf() (Ilpo Järvinen)
- Add pbus_validate_busn() for Bus Number validation (Ilpo Järvinen)
- Don't claim disabled bridge windows to avoid spurious claim failures
(Ilpo Järvinen)
* pci/resource:
PCI: Don't claim disabled bridge windows
PCI: Move CardBus bridge scanning to setup-cardbus.c
PCI: Add pbus_validate_busn() for Bus Number validation
PCI: Add dword #defines for Bus Number + Secondary Latency Timer
PCI: Use scnprintf() instead of sprintf()
PCI: Handle CardBus-specific params in setup-cardbus.c
PCI: Separate CardBus setup & build it only with CONFIG_CARDBUS
PCI: Add 'pci' prefix to struct pci_dev_resource handling functions
PCI: Use resource_assigned() in setup-bus.c algorithm
resource: Mark res given to resource_assigned() as const
PCI: Add pbus_mem_size_optional() to handle optional sizes
PCI: Check invalid align earlier in pbus_size_mem()
PCI: Log reset and restore of resources
PCI: Add pci_resource_is_bridge_win()
PCI: Fetch dev_res to local var in __assign_resources_sorted()
PCI: Use res_to_dev_res() in reassign_resources_sorted()
PCI: Pass bridge window resource to pbus_size_mem()
PCI: Push realloc check into pbus_size_mem()
PCI: Remove old_size limit from bridge window sizing
resource: Increase MAX_IORES_LEVEL to 8
PCI: Stop over-estimating bridge window size
PCI: Rewrite bridge window head alignment function
PCI: Fix bridge window alignment with optional resources
PCI: Use resource_set_range() that correctly sets ->end
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- Rename pwrseq, tc9563, and slot driver structs, variables, and functions
for consistency (Bjorn Helgaas)
- Add power_on/off callbacks with generic signature to pwrseq, tc9563, and
slot drivers so they can be used by pwrctrl core (Manivannan Sadhasivam)
- Add interfaces to create and destroy pwrctrl devices (Krishna Chaitanya
Chundru)
- Add interfaces to power devices on and off (Manivannan Sadhasivam)
- Switch to pwrctrl interfaces to create, destroy, and power on/off
devices, calling them from host controller drivers instead of the PCI
core (Manivannan Sadhasivam)
- Drop qcom .assert_perst() callbacks since this is now done by the
controller driver instead of the pwrctrl driver (Manivannan Sadhasivam)
- Add PCIe M.2 connector support to the slot pwrctrl driver (Manivannan
Sadhasivam)
- Create pwrctrl devices for devicetree PCIe M.2 connector nodes
(Manivannan Sadhasivam)
* pci/pwrctrl:
PCI/pwrctrl: Create pwrctrl device if graph port is found
PCI/pwrctrl: Add PCIe M.2 connector support
PCI: Drop the assert_perst() callback
PCI: qcom: Drop the assert_perst() callbacks
PCI/pwrctrl: Switch to pwrctrl create, power on/off, destroy APIs
PCI/pwrctrl: Add APIs to power on/off pwrctrl devices
PCI/pwrctrl: Add APIs to create, destroy pwrctrl devices
PCI/pwrctrl: Add 'struct pci_pwrctrl::power_{on/off}' callbacks
PCI/pwrctrl: pwrseq: Factor out power on/off code to helpers
PCI/pwrctrl: slot: Factor out power on/off code to helpers
PCI/pwrctrl: tc9563: Rename private struct and pointers for consistency
PCI/pwrctrl: tc9563: Add local variables to reduce repetition
PCI/pwrctrl: tc9563: Clean up whitespace
PCI/pwrctrl: tc9563: Use put_device() instead of i2c_put_adapter()
PCI/pwrctrl: slot: Rename private struct and pointers for consistency
PCI/pwrctrl: pwrseq: Rename private struct and pointers for consistency
# Conflicts:
# drivers/pci/bus.c
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- Fix leaks of ptm_debugfs in pcie_ptm_create_debugfs() and
pcie_ptm_destroy_debugfs() (Aadityarangan Shridhar Iyengar)
* pci/ptm:
PCI/PTM: Fix pcie_ptm_create_debugfs() memory leak
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- Drop device reference unconditionally in pcie_port_remove_service() to
fix resource leak (Uwe Kleine-König)
- Remove empty pcie_port_shutdown_service() callback (Uwe Kleine-König)
- Remove unnecessary bus_type check in pcie_port_bus_match() (Uwe
Kleine-König)
- Move pcie_port_bus_match() and pcie_port_bus_type to PCIe-specific
portdrv.c (Uwe Kleine-König)
- Remove unnecessary dev and dev->driver checks in portdrv .probe() and
.remove() (Uwe Kleine-König)
- Take advantage of pcie_port_bus_type.probe() and .remove() instead of
assigning them for each portdrv service driver (Uwe Kleine-König)
* pci/portdrv:
PCI/portdrv: Use bus-type functions
PCI/portdrv: Don't check for valid device and driver in bus callbacks
PCI/portdrv: Move pcie_port_bus_type to pcie source file
PCI/portdrv: Don't check for the driver's and device's bus
PCI/portdrv: Drop empty shutdown callback
PCI/portdrv: Fix potential resource leak
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- Avoid redundant delay on transition from D3hot to D3cold if the device
was already in D3hot (Brian Norris)
- Prevent runtime suspend until devices are fully initialized to avoid
saving incompletely configured device state (Brian Norris)
* pci/pm:
PCI/PM: Prevent runtime suspend until devices are fully initialized
PCI/PM: Avoid redundant delays on D3hot->D3cold
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- Release per-CPU pgmap ref when vm_insert_page() fails so we don't hang
when removing the PCI device (Hou Tao)
- Remove incorrect p2pmem_alloc_mmap() warning about page refcount (Hou
Tao)
- Reset page reference count when page mapping fails (Alistair Popple)
* pci/p2pdma:
PCI/P2PDMA: Reset page reference count when page mapping fails
PCI/P2PDMA: Fix p2pmem_alloc_mmap() warning condition
PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails
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