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Extend dt-bindings for lan966x with ptp interrupt. This is generated
when doing 2-step timestamping and the timestamp can be read from the
FIFO.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update Documentation/admin-guide/sysctl/net.rst with txrehash usage
description.
Signed-off-by: Akhmat Karakotov <hmukos@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Updated macb DT binding documentation to reflect the phy-names, phys,
resets, reset-names properties which are now used with ZynqMP GEM
devices, and added a ZynqMP-specific DT example.
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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For applications running on a mix of platforms it's useful
to have a clear indication whether host's NIC supports the
geometry requirements of TCP zero-copy. TCP zero-copy Rx
requires data to be neatly placed into memory pages.
Most NICs can't do that.
This patch is adding GET support only, since the NICs
I work with either always have the feature enabled or
enable it whenever MTU is set to jumbo. In other words
I don't need SET. But adding set should be trivial.
(The only note on SET is that we will likely want
the setting to be "sticky" and use 0 / `unknown`
to reset it back to driver default.)
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Document the new microchip,synclko-disable property which can be
specified to disable the reference clock output from the device if not
required by the board design.
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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No conflicts.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The driver now supports the standard "clock-frequency" and
"suppress-preamble" properties, do document them in the binding
description.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This property has never been supported by the driver. The kernel has
settled on "clock-frequency" as the standard name for this binding, so
once that is supported we will document that instead.
Fixes: 7f93c9d90f4d ("power/fsl: add MDIO dt binding for FMan")
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann says:
====================
pull-request: bpf-next 2022-01-24
We've added 80 non-merge commits during the last 14 day(s) which contain
a total of 128 files changed, 4990 insertions(+), 895 deletions(-).
The main changes are:
1) Add XDP multi-buffer support and implement it for the mvneta driver,
from Lorenzo Bianconi, Eelco Chaudron and Toke Høiland-Jørgensen.
2) Add unstable conntrack lookup helpers for BPF by using the BPF kfunc
infra, from Kumar Kartikeya Dwivedi.
3) Extend BPF cgroup programs to export custom ret value to userspace via
two helpers bpf_get_retval() and bpf_set_retval(), from YiFei Zhu.
4) Add support for AF_UNIX iterator batching, from Kuniyuki Iwashima.
5) Complete missing UAPI BPF helper description and change bpf_doc.py script
to enforce consistent & complete helper documentation, from Usama Arif.
6) Deprecate libbpf's legacy BPF map definitions and streamline XDP APIs to
follow tc-based APIs, from Andrii Nakryiko.
7) Support BPF_PROG_QUERY for BPF programs attached to sockmap, from Di Zhu.
8) Deprecate libbpf's bpf_map__def() API and replace users with proper getters
and setters, from Christy Lee.
9) Extend libbpf's btf__add_btf() with an additional hashmap for strings to
reduce overhead, from Kui-Feng Lee.
10) Fix bpftool and libbpf error handling related to libbpf's hashmap__new()
utility function, from Mauricio Vásquez.
11) Add support to BTF program names in bpftool's program dump, from Raman Shukhau.
12) Fix resolve_btfids build to pick up host flags, from Connor O'Brien.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (80 commits)
selftests, bpf: Do not yet switch to new libbpf XDP APIs
selftests, xsk: Fix rx_full stats test
bpf: Fix flexible_array.cocci warnings
xdp: disable XDP_REDIRECT for xdp frags
bpf: selftests: add CPUMAP/DEVMAP selftests for xdp frags
bpf: selftests: introduce bpf_xdp_{load,store}_bytes selftest
net: xdp: introduce bpf_xdp_pointer utility routine
bpf: generalise tail call map compatibility check
libbpf: Add SEC name for xdp frags programs
bpf: selftests: update xdp_adjust_tail selftest to include xdp frags
bpf: test_run: add xdp_shared_info pointer in bpf_test_finish signature
bpf: introduce frags support to bpf_prog_test_run_xdp()
bpf: move user_size out of bpf_test_init
bpf: add frags support to xdp copy helpers
bpf: add frags support to the bpf_xdp_adjust_tail() API
bpf: introduce bpf_xdp_get_buff_len helper
net: mvneta: enable jumbo frames if the loaded XDP program support frags
bpf: introduce BPF_F_XDP_HAS_FRAGS flag in prog_flags loading the ebpf program
net: mvneta: add frags support to XDP_TX
xdp: add frags support to xdp_return_{buff/frame}
...
====================
Link: https://lore.kernel.org/r/20220124221235.18993-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Use BTF-defined map definition in the documentation example.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20220120060529.1890907-5-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Pull VFIO updates from Alex Williamson:
- Introduce new device migration uAPI and implement device specific
mlx5 vfio-pci variant driver supporting new protocol (Jason
Gunthorpe, Yishai Hadas, Leon Romanovsky)
- New HiSilicon acc vfio-pci variant driver, also supporting migration
interface (Shameer Kolothum, Longfang Liu)
- D3hot fixes for vfio-pci-core (Abhishek Sahu)
- Document new vfio-pci variant driver acceptance criteria
(Alex Williamson)
- Fix UML build unresolved ioport_{un}map() functions
(Alex Williamson)
- Fix MAINTAINERS due to header movement (Lukas Bulwahn)
* tag 'vfio-v5.18-rc1' of https://github.com/awilliam/linux-vfio: (31 commits)
vfio-pci: Provide reviewers and acceptance criteria for variant drivers
MAINTAINERS: adjust entry for header movement in hisilicon qm driver
hisi_acc_vfio_pci: Use its own PCI reset_done error handler
hisi_acc_vfio_pci: Add support for VFIO live migration
crypto: hisilicon/qm: Set the VF QM state register
hisi_acc_vfio_pci: Add helper to retrieve the struct pci_driver
hisi_acc_vfio_pci: Restrict access to VF dev BAR2 migration region
hisi_acc_vfio_pci: add new vfio_pci driver for HiSilicon ACC devices
hisi_acc_qm: Move VF PCI device IDs to common header
crypto: hisilicon/qm: Move few definitions to common header
crypto: hisilicon/qm: Move the QM header to include/linux
vfio/mlx5: Fix to not use 0 as NULL pointer
PCI/IOV: Fix wrong kernel-doc identifier
vfio/mlx5: Use its own PCI reset_done error handler
vfio/pci: Expose vfio_pci_core_aer_err_detected()
vfio/mlx5: Implement vfio_pci driver for mlx5 devices
vfio/mlx5: Expose migration commands over mlx5 device
vfio: Remove migration protocol v1 documentation
vfio: Extend the device migration protocol with RUNNING_P2P
vfio: Define device migration protocol v2
...
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Device specific extensions for devices exposed to userspace through
the vfio-pci-core library open both new functionality and new risks.
Here we attempt to provided formalized requirements and expectations
to ensure that future drivers both collaborate in their interaction
with existing host drivers, as well as receive additional reviews
from community members with experience in this area.
Acked-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/164736509088.181560.2887686123582116702.stgit@omen
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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Pull kvm updates from Paolo Bonzini:
"ARM:
- Proper emulation of the OSLock feature of the debug architecture
- Scalibility improvements for the MMU lock when dirty logging is on
- New VMID allocator, which will eventually help with SVA in VMs
- Better support for PMUs in heterogenous systems
- PSCI 1.1 support, enabling support for SYSTEM_RESET2
- Implement CONFIG_DEBUG_LIST at EL2
- Make CONFIG_ARM64_ERRATUM_2077057 default y
- Reduce the overhead of VM exit when no interrupt is pending
- Remove traces of 32bit ARM host support from the documentation
- Updated vgic selftests
- Various cleanups, doc updates and spelling fixes
RISC-V:
- Prevent KVM_COMPAT from being selected
- Optimize __kvm_riscv_switch_to() implementation
- RISC-V SBI v0.3 support
s390:
- memop selftest
- fix SCK locking
- adapter interruptions virtualization for secure guests
- add Claudio Imbrenda as maintainer
- first step to do proper storage key checking
x86:
- Continue switching kvm_x86_ops to static_call(); introduce
static_call_cond() and __static_call_ret0 when applicable.
- Cleanup unused arguments in several functions
- Synthesize AMD 0x80000021 leaf
- Fixes and optimization for Hyper-V sparse-bank hypercalls
- Implement Hyper-V's enlightened MSR bitmap for nested SVM
- Remove MMU auditing
- Eager splitting of page tables (new aka "TDP" MMU only) when dirty
page tracking is enabled
- Cleanup the implementation of the guest PGD cache
- Preparation for the implementation of Intel IPI virtualization
- Fix some segment descriptor checks in the emulator
- Allow AMD AVIC support on systems with physical APIC ID above 255
- Better API to disable virtualization quirks
- Fixes and optimizations for the zapping of page tables:
- Zap roots in two passes, avoiding RCU read-side critical
sections that last too long for very large guests backed by 4
KiB SPTEs.
- Zap invalid and defunct roots asynchronously via
concurrency-managed work queue.
- Allowing yielding when zapping TDP MMU roots in response to the
root's last reference being put.
- Batch more TLB flushes with an RCU trick. Whoever frees the
paging structure now holds RCU as a proxy for all vCPUs running
in the guest, i.e. to prolongs the grace period on their behalf.
It then kicks the the vCPUs out of guest mode before doing
rcu_read_unlock().
Generic:
- Introduce __vcalloc and use it for very large allocations that need
memcg accounting"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (246 commits)
KVM: use kvcalloc for array allocations
KVM: x86: Introduce KVM_CAP_DISABLE_QUIRKS2
kvm: x86: Require const tsc for RT
KVM: x86: synthesize CPUID leaf 0x80000021h if useful
KVM: x86: add support for CPUID leaf 0x80000021
KVM: x86: do not use KVM_X86_OP_OPTIONAL_RET0 for get_mt_mask
Revert "KVM: x86/mmu: Zap only TDP MMU leafs in kvm_zap_gfn_range()"
kvm: x86/mmu: Flush TLB before zap_gfn_range releases RCU
KVM: arm64: fix typos in comments
KVM: arm64: Generalise VM features into a set of flags
KVM: s390: selftests: Add error memop tests
KVM: s390: selftests: Add more copy memop tests
KVM: s390: selftests: Add named stages for memop test
KVM: s390: selftests: Add macro as abstraction for MEM_OP
KVM: s390: selftests: Split memop tests
KVM: s390x: fix SCK locking
RISC-V: KVM: Implement SBI HSM suspend call
RISC-V: KVM: Add common kvm_riscv_vcpu_wfi() function
RISC-V: Add SBI HSM suspend related defines
RISC-V: KVM: Implement SBI v0.3 SRST extension
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KVM_CAP_DISABLE_QUIRKS is irrevocably broken. The capability does not
advertise the set of quirks which may be disabled to userspace, so it is
impossible to predict the behavior of KVM. Worse yet,
KVM_CAP_DISABLE_QUIRKS will tolerate any value for cap->args[0], meaning
it fails to reject attempts to set invalid quirk bits.
The only valid workaround for the quirky quirks API is to add a new CAP.
Actually advertise the set of quirks that can be disabled to userspace
so it can predict KVM's behavior. Reject values for cap->args[0] that
contain invalid bits.
Finally, add documentation for the new capability and describe the
existing quirks.
Signed-off-by: Oliver Upton <oupton@google.com>
Message-Id: <20220301060351.442881-5-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for 5.18
- Proper emulation of the OSLock feature of the debug architecture
- Scalibility improvements for the MMU lock when dirty logging is on
- New VMID allocator, which will eventually help with SVA in VMs
- Better support for PMUs in heterogenous systems
- PSCI 1.1 support, enabling support for SYSTEM_RESET2
- Implement CONFIG_DEBUG_LIST at EL2
- Make CONFIG_ARM64_ERRATUM_2077057 default y
- Reduce the overhead of VM exit when no interrupt is pending
- Remove traces of 32bit ARM host support from the documentation
- Updated vgic selftests
- Various cleanups, doc updates and spelling fixes
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* kvm-arm64/misc-5.18:
: .
: Misc fixes for KVM/arm64 5.18:
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: - Drop unused kvm parameter to kvm_psci_version()
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: - Implement CONFIG_DEBUG_LIST at EL2
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: - Make CONFIG_ARM64_ERRATUM_2077057 default y
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: - Only do the interrupt dance if we have exited because of an interrupt
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: - Remove traces of 32bit ARM host support from the documentation
: .
Documentation: KVM: Update documentation to indicate KVM is arm64-only
KVM: arm64: Only open the interrupt window on exit due to an interrupt
KVM: arm64: Enable Cortex-A510 erratum 2077057 by default
Signed-off-by: Marc Zyngier <maz@kernel.org>
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KVM support for 32-bit ARM hosts (KVM/arm) has been removed from the
kernel since commit 541ad0150ca4 ("arm: Remove 32bit KVM host
support"). There still exists some remnants of the old architecture in
the KVM documentation.
Remove all traces of 32-bit host support from the documentation. Note
that AArch32 guests are still supported.
Suggested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220308172856.2997250-1-oupton@google.com
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* kvm-arm64/psci-1.1:
: .
: Limited PSCI-1.1 support from Will Deacon:
:
: This small series exposes the PSCI SYSTEM_RESET2 call to guests, which
: allows the propagation of a "reset_type" and a "cookie" back to the VMM.
: Although Linux guests only ever pass 0 for the type ("SYSTEM_WARM_RESET"),
: the vendor-defined range can be used by a bootloader to provide additional
: information about the reset, such as an error code.
: .
KVM: arm64: Remove unneeded semicolons
KVM: arm64: Indicate SYSTEM_RESET2 in kvm_run::system_event flags field
KVM: arm64: Expose PSCI SYSTEM_RESET2 call to the guest
KVM: arm64: Bump guest PSCI version to 1.1
Signed-off-by: Marc Zyngier <maz@kernel.org>
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When handling reset and power-off PSCI calls from the guest, we
initialise X0 to PSCI_RET_INTERNAL_FAILURE in case the VMM tries to
re-run the vCPU after issuing the call.
Unfortunately, this also means that the VMM cannot see which PSCI call
was issued and therefore cannot distinguish between PSCI SYSTEM_RESET
and SYSTEM_RESET2 calls, which is necessary in order to determine the
validity of the "reset_type" in X1.
Allocate bit 0 of the previously unused 'flags' field of the
system_event structure so that we can indicate the PSCI call used to
initiate the reset.
Cc: Marc Zyngier <maz@kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Alexandru Elisei <alexandru.elisei@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220221153524.15397-4-will@kernel.org
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Userspace can assign a PMU to a VCPU with the KVM_ARM_VCPU_PMU_V3_SET_PMU
device ioctl. If the VCPU is scheduled on a physical CPU which has a
different PMU, the perf events needed to emulate a guest PMU won't be
scheduled in and the guest performance counters will stop counting. Treat
it as an userspace error and refuse to run the VCPU in this situation.
Suggested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220127161759.53553-7-alexandru.elisei@arm.com
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When KVM creates an event and there are more than one PMUs present on the
system, perf_init_event() will go through the list of available PMUs and
will choose the first one that can create the event. The order of the PMUs
in this list depends on the probe order, which can change under various
circumstances, for example if the order of the PMU nodes change in the DTB
or if asynchronous driver probing is enabled on the kernel command line
(with the driver_async_probe=armv8-pmu option).
Another consequence of this approach is that on heteregeneous systems all
virtual machines that KVM creates will use the same PMU. This might cause
unexpected behaviour for userspace: when a VCPU is executing on the
physical CPU that uses this default PMU, PMU events in the guest work
correctly; but when the same VCPU executes on another CPU, PMU events in
the guest will suddenly stop counting.
Fortunately, perf core allows user to specify on which PMU to create an
event by using the perf_event_attr->type field, which is used by
perf_init_event() as an index in the radix tree of available PMUs.
Add the KVM_ARM_VCPU_PMU_V3_CTRL(KVM_ARM_VCPU_PMU_V3_SET_PMU) VCPU
attribute to allow userspace to specify the arm_pmu that KVM will use when
creating events for that VCPU. KVM will make no attempt to run the VCPU on
the physical CPUs that share the PMU, leaving it up to userspace to manage
the VCPU threads' affinity accordingly.
To ensure that KVM doesn't expose an asymmetric system to the guest, the
PMU set for one VCPU will be used by all other VCPUs. Once a VCPU has run,
the PMU cannot be changed in order to avoid changing the list of available
events for a VCPU, or to change the semantics of existing events.
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220127161759.53553-6-alexandru.elisei@arm.com
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Userspace can specify which events a guest is allowed to use with the
KVM_ARM_VCPU_PMU_V3_FILTER attribute. The list of allowed events can be
identified by a guest from reading the PMCEID{0,1}_EL0 registers.
Changing the PMU event filter after a VCPU has run can cause reads of the
registers performed before the filter is changed to return different values
than reads performed with the new event filter in place. The architecture
defines the two registers as read-only, and this behaviour contradicts
that.
Keep track when the first VCPU has run and deny changes to the PMU event
filter to prevent this from happening.
Signed-off-by: Marc Zyngier <maz@kernel.org>
[ Alexandru E: Added commit message, updated ioctl documentation ]
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220127161759.53553-2-alexandru.elisei@arm.com
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Merge bugfixes from 5.17 before merging more tricky work.
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Remove the now unused KVM_REQ_MMU_RELOAD, shift KVM_REQ_VM_DEAD into the
unoccupied space, and update vcpu-requests.rst, which was missing an
entry for KVM_REQ_VM_DEAD. Switching KVM_REQ_VM_DEAD to entry '1' also
fixes the stale comment about bits 4-7 being reserved.
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
Message-Id: <20220225182248.3812651-7-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Add a new capability, KVM_CAP_PMU_CAPABILITY, that takes a bitmask of
settings/features to allow userspace to configure PMU virtualization on
a per-VM basis. For now, support a single flag, KVM_PMU_CAP_DISABLE,
to allow disabling PMU virtualization for a VM even when KVM is configured
with enable_pmu=true a module level.
To keep KVM simple, disallow changing VM's PMU configuration after vCPUs
have been created.
Signed-off-by: David Dunn <daviddunn@google.com>
Message-Id: <20220223225743.2703915-2-daviddunn@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: Changes for 5.18 part1
- add Claudio as Maintainer
- first step to do proper storage key checking
- testcase for missing memop check
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Clarify that the key argument represents the access key, not the whole
storage key.
Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Link: https://lore.kernel.org/r/20220221143657.3712481-1-scgl@linux.ibm.com
Fixes: 5e35d0eb472b ("KVM: s390: Update api documentation for memop ioctl")
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
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Document all currently existing operations, flags and explain under
which circumstances they are available. Document the recently
introduced absolute operations and the storage key protection flag,
as well as the existing SIDA operations.
Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/r/20220211182215.2730017-10-scgl@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
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Remove mmu_audit.c and all its collateral, the auditing code has suffered
severe bitrot, ironically partly due to shadow paging being more stable
and thus not benefiting as much from auditing, but mostly due to TDP
supplanting shadow paging for non-nested guests and shadowing of nested
TDP not heavily stressing the logic that is being audited.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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When using KVM_DIRTY_LOG_INITIALLY_SET, huge pages are not
write-protected when dirty logging is enabled on the memslot. Instead
they are write-protected once userspace invokes KVM_CLEAR_DIRTY_LOG for
the first time and only for the specific sub-region being cleared.
Enhance KVM_CLEAR_DIRTY_LOG to also try to split huge pages prior to
write-protecting to avoid causing write-protection faults on vCPU
threads. This also allows userspace to smear the cost of huge page
splitting across multiple ioctls, rather than splitting the entire
memslot as is the case when initially-all-set is not used.
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20220119230739.2234394-17-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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enabled
When dirty logging is enabled without initially-all-set, try to split
all huge pages in the memslot down to 4KB pages so that vCPUs do not
have to take expensive write-protection faults to split huge pages.
Eager page splitting is best-effort only. This commit only adds the
support for the TDP MMU, and even there splitting may fail due to out
of memory conditions. Failures to split a huge page is fine from a
correctness standpoint because KVM will always follow up splitting by
write-protecting any remaining huge pages.
Eager page splitting moves the cost of splitting huge pages off of the
vCPU threads and onto the thread enabling dirty logging on the memslot.
This is useful because:
1. Splitting on the vCPU thread interrupts vCPUs execution and is
disruptive to customers whereas splitting on VM ioctl threads can
run in parallel with vCPU execution.
2. Splitting all huge pages at once is more efficient because it does
not require performing VM-exit handling or walking the page table for
every 4KiB page in the memslot, and greatly reduces the amount of
contention on the mmu_lock.
For example, when running dirty_log_perf_test with 96 virtual CPUs, 1GiB
per vCPU, and 1GiB HugeTLB memory, the time it takes vCPUs to write to
all of their memory after dirty logging is enabled decreased by 95% from
2.94s to 0.14s.
Eager Page Splitting is over 100x more efficient than the current
implementation of splitting on fault under the read lock. For example,
taking the same workload as above, Eager Page Splitting reduced the CPU
required to split all huge pages from ~270 CPU-seconds ((2.94s - 0.14s)
* 96 vCPU threads) to only 1.55 CPU-seconds.
Eager page splitting does increase the amount of time it takes to enable
dirty logging since it has split all huge pages. For example, the time
it took to enable dirty logging in the 96GiB region of the
aforementioned test increased from 0.001s to 1.55s.
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20220119230739.2234394-16-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Pull ARM devicetree updates from Arnd Bergmann:
"After a somewhat quiet 5.17 release, the size of the DT changes is a
bit larger again. There are nine new SoC that get added, all of them
related to existing platforms:
- Airoha (formerly Mediatek/EcoNet) EN7523 networking SoC and EVB
- Mediatek mt6582 tablet platform with the Prestigio PMT5008 3G
tablet
- Microchip Lan966 networking SoC and it evaluation board
- Qualcomm Snapdragon 625/632 midrange phone SoCs, with the LG Nexus
5X and Fairphone FP3 phones
- Renesas RZ/G2LC and RZ/V2L general-purpose embedded SoCs, along
with their evaluation boards
- Samsung Exynos 850 phone SoC and reference board
- Samsung Exynos7885 with the Samsung Galaxy A8 (2018) phone
- Tesla FSD (Fully Self-Driving), an automotive SoC loosely derived
from the Samsung Exynos family.
- TI K3/AM62 SoC and reference board
Support for additional functionality in existing dts files is added
all over the place: Samsung, Renesas, Mstar, wpcm450, OMAP, AT91,
Allwinner, i.MX, Tegra, Aspeed, Oxnas, Qualcomm, Mediatek, and
Broadcom.
Samsung has a rework for its pinctrl schema that is a bit tricky and
requires driver changes to be included here.
A few more platforms only have smaller cleanups and DT Schema fixes,
this includes SoCFPGA, ux500, ixp4xx, STi, Xilinx Zynq, LG, and Juno.
The new machines are really too many to list, but I'll do it anyway:
Allwinner:
- A20-Marsboard development board
Amlogic:
- Amediatek X96-AIR (Amlogic S905X3)
- CYX A95XF3-AIR (Amlogic S905X3)
- Haochuangy H96-Max (Amlogic S905X3)
- Amlogic AQ222 (Amlogic S4)
- OSMC Vero 4K+ (Amlogic S905D)
Arm Juno:
- Separate DT depending on SCMI firmware version
Aspeed:
- Quanta S6Q BMC (AST2600)
- ASRock ROMED8HM3 (AST2500)
Broadcom:
- Raspberry Pi Zero 2 W
Marvell MVEBU/Armada:
- Ctera C200 V1 NAS (kirkwood)
- Ctera C200 V2 NAS (armada-370)
Mstar:
- DongShanPiOne, a low-end embedded board
- Miyoo Mini handheld game console
NXP i.MX:
- Numerous i.MX8M Mini based boards in even more variations, but
none based on other SoCs this time:
Protonic PRT8MM, emCON-MX8M Mini, Toradex Verdin, and
Gateworks GW7903
Qualcomm:
- Google Herobrine R1 Chromebook platform (Snapdragon 7c Gen 3)
- SHIFT6mq phone (Snapdragon 845)
- Samsung Galaxy Book2 (Snapdragon 850)
- Snapdragon 8 Gen 1 Hardware Development Kit
TI OMAP:
- SanCloud BeagleBone Enhanced WiFi
Rockchip:
- Pine64 PineNote ereader tablet (rk356x)
- Bananapi-R2-Pro (rk356x)
STM32:
- emtrion emSBS-Argon embedded board (stm32mp157c)"
* tag 'arm-dt-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (627 commits)
arm64: dts: n5x: drop invalid property and fix edac node name
arm64: dts: fsd: Add the MCT support
arm64: dts: stingray: Fix spi clock name
arm64: dts: ns2: Fix spi clock name
ARM: dts: rockchip: Update regulator name for PX3
ARM: dts: rockchip: Add #clock-cells value for rk805
arm64: dts: rockchip: Add #clock-cells value for rk805
arm64: dts: rockchip: Remove vcc13 and vcc14 for rk808
arm64: dts: rockchip: Fix SDIO regulator supply properties on rk3399-firefly
ARM: dts: at91: sama7g5: Add NAND support
ARM: dts: at91: sama7g5: add eic node
ARM: dts: at91: sama7g5: Remove unused properties in i2c nodes
ARM: dts: at91: sam9x60ek: modify vdd_1v5 regulator to vdd_1v15
arm64: dts: lg: align pl330 node name with dtschema
arm64: dts: lg: add dma-cells to pl330 node
arm64: dts: juno: align pl330 node name with dtschema
arm64: dts: broadcom: Fix sata nodename
arm64: dts: n5x: add sdr edac support
arm64: dts: agilex/stratix10: add clock-names to USB DWC2 node
dt-bindings: usb: dwc2: add disable-over-current
...
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git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into arm/dt
SoCFPGA dts updates for v5.18, part 2
- More dt-bindings cleanup, this time, USB DWC2 properties
- Add SDR EDAC dts entry for the N5X platform
* tag 'socfpga_dts_update_for_v5.18_part2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
arm64: dts: n5x: add sdr edac support
arm64: dts: agilex/stratix10: add clock-names to USB DWC2 node
dt-bindings: usb: dwc2: add disable-over-current
dt-bindings: usb: dwc2: add iommus
dt-bindings: usb: dwc2: fix compatible of Intel Agilex
Link: https://lore.kernel.org/r/20220310195740.151250-1-dinguyen@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The driver parses disable-over-current protection and some
implementations use it (e.g. Altera Stratix10), so document it in the
bindings.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
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The DWC2 node might use IOMMU (e.g. Altera Stratix10), so add "iommus"
property. This fixes warnings like:
arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dt.yaml:
usb@ffb40000: 'iommus' does not match any of the regexes: 'pinctrl-[0-9]+'
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
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Intel Agilex USB DWC2 node is used as compatible with generic snps,dwc2
(just like Altera's Stratix10).
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
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https://github.com/Broadcom/stblinux into arm/dt
This pull request contains Broadcom ARM-based SoCs Device Tree changes
for 5.18, please pull the following:
- Arinc defines the switch ports of the RTL8365MB switch on the Asus
RT-AC88U
- Richard provides cache information for the BCM2835/36/37 and BCM2711
SoCs such that tools like "lscpu -C" can report it when supported
- Stefan adds support for the Raspberry Pi Zero 2 W (wireless)
- Matthew defines the MAC address NVMEM cells for the Cisco Meraki
MX64/MX65 devices, he also fixes the LED for these platforms.
- Rafal adds the MAC addres NVMEM cell for the Luxul XWR-3150
* tag 'arm-soc/for-5.18/devicetree' of https://github.com/Broadcom/stblinux:
ARM: dts: BCM5301X: Add Ethernet MAC address to Luxul XWR-3150
ARM: dts: NSP: MX6X: correct LED function types
ARM: dts: NSP: MX6X: get mac-address from eeprom
arm64: dts: broadcom: Add reference to RPi Zero 2 W
ARM: dts: Add Raspberry Pi Zero 2 W
dt-bindings: arm: bcm2835: Add Raspberry Pi Zero 2 W
ARM: dts: bcm2835/6: Add the missing L1/L2 cache information
ARM: dts: bcm2711: Add the missing L1/L2 cache information
ARM: dts: bcm2837: Add the missing L1/L2 cache information
ARM: dts: BCM5301X: define RTL8365MB switch on Asus RT-AC88U
Link: https://lore.kernel.org/r/20220307194817.3754107-2-f.fainelli@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Add the Raspberry Pi Zero 2 W to DT schema.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into arm/dt
mvebu dt for 5.18 (part 1)
Add new 2 bays NAS:
- Ctera C200 V1 (kirkwood based)
- Ctera C200 V2 (armada-370 based)
Add support for PCIe legacy INTx interrupts on Armada 385
Add PCIe proprty to limit the power on miniPCIe slots in Turris Omnia
* tag 'mvebu-dt-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu:
ARM: dts: turris-omnia: Set PCIe slot-power-limit-milliwatt properties
ARM: dts: mvebu: Add Ctera C-200 V2 board
ARM: dts: kirkwood: Add Ctera C-200 V1 board
dt-bindings: vendor-prefixes: Add Ctera Networks
ARM: dts: armada-385.dtsi: Add definitions for PCIe legacy INTx interrupts
Link: https://lore.kernel.org/r/87pmn5zrd0.fsf@BL-laptop
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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CTERA Networks Intl. is a company based in Israel.
They manufacture NASes, network devices and provide software
products for cloud storage and IT security.
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux into arm/dt
- add initial support for mt6582 and Prestigio PMT5008 3G tablet
- add basic support for Airoha EN7523
* tag 'v5.17-next-dts32' of git://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux:
ARM: dts: add GPIO support for Airoha EN7523
ARM: Add basic support for Airoha EN7523 SoC
dt-bindings: arm: airoha: Add binding for EN7523 SoC and EVB
dt-bindings: Add vendor prefix for Airoha
dt-bindings: mediatek: Adds a DT binding documentation for the MT6582 SoC
ARM: dts: Add initial support for Prestigio PMT5008 3G tablet
ARM: dts: Add initial support for Mediatek mt6582
Link: https://lore.kernel.org/r/3974dc7e-4185-4d88-ab5b-031a7d24214d@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Add devicetree binding for Airoha EN7523 SoC and evaluation board.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Bert Vermeulen <bert@biot.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211220211854.89452-3-nbd@nbd.name
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
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Add vendor prefix "airoha" for Airoha, a subsidiary of MediaTek
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Bert Vermeulen <bert@biot.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211220211854.89452-2-nbd@nbd.name
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
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This adds a DT binding documentation for the MT6582 SoC.
Signed-off-by: Maxim Kutnij <gtk3@inbox.ru>
Link: https://lore.kernel.org/r/20211219183134.3849-3-gtk3@inbox.ru
[mb: fix commit subject line and compatible order]
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/dt
Qualcomm ARM64 DeviceTree updates for v5.18
New platforms: Snapdragon 625 and Snapdragon 632
New boards: Google Herobrine R1, Fairphone FP3, SHIFT6mq, Samsung Galaxy
Book2 and Snapdragon 8 Gen 1 Hardware Development Kit (HDK)
On IPQ6018 the USB reference period is corrected, GICv2m support is
enabled and the max-link-speed for PCIe is specified.
IPQ8074 adds description of GIVv2m and SMEM, and ensures that TrustZone
related memory is reserved from Linux.
On the Snapdragon 7c Gen 3 (SC7280) description of display, displayport,
L3 interconnect, bluetooth, CPU opp-tables are added. Another revision
of the Google Herobrine is introduced and a bunch of cleanups are
introduced.
On Snapdragon 845 new support for the SHIFT6mq device is introduced, the
OnePlus devices gains fuel gauge and the platform gains GSI DMA support,
which is enabled for SPI (for now).
On the Snapdragon 850 based WindowsOnSnapdragon laptops, initial support
for Samsugn Galaxy Book2 is introduced and the Lenovo Yoga C630 gains
description of its backlight controls.
The Snapdragon 625 platform (MSM8953) the thereof derrived Snapdragon
632 platform is introduced, with initial description of the Fairphone 3.
Fairphone 4 on the SM7225 platform gains proper WLED configuration.
On Snapdragon 855 (SM8150) description of the limits hardware (LMh) is
introduced and the SPI and I2C devices are wired to the GSI DMA controller.
On Snapdragon 865 (SM8250) the CPU and cluster idle states are
introduced, the MSI interrupts for PCIe 1 and 2 are corrected and the
CPUfreq driver gains knowledge about thermal pressure interrupts.
On Snapdragon 8 Gen 1 (SM8450) LLCC, interconnect and remoteproc
descriptions are added. The SM8450 Hardware Development Kit is
introduced and the QRD has its remoteproc instances enabled.
Cluster idle and RPMh parameters are corrected on SM8150, SM8350 and
SM8540.
The IPA device on SC7180, SC7280 and SM8350 gains knowledge of the AOSS
QMP mailbox, allowing it to enable retention of IPA registers during
power collapse.
DeviceTree validation issues related to thermal zone naming, missing
CPU, device and platform compatibles, APR, Google EC PWM, DB410c sound,
QCS404 opp-tables and SM8250 PCIe nodes are corrected.
A bunch of cleanups and style fixes for MSM8992, MSM8994, MSM8996 and
MSM8916 are introduced as well.
* tag 'qcom-arm64-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (96 commits)
arm64: dts: qcom: sdm632: Add device tree for Fairphone 3
dt-bindings: arm: qcom: Document sdm632 and fairphone,fp3 board
arm64: dts: qcom: Add SDM632 device tree
arm64: dts: qcom: Add PM8953 PMIC
arm64: dts: qcom: Add MSM8953 device tree
dt-bindings: arm: cpus: Add Kryo 250 CPUs
arm64: dts: qcom: msm8916-longcheer-l8150: Add light and proximity sensor
arm64: dts: qcom: align Google CROS EC PWM node name with dtschema
arm64: dts: qcom: Add support for Samsung Galaxy Book2
arm64: dts: qcom: msm8996: convert xo_board to RPM_SMD_BB_CLK1
arm64: dts: qcom: msm8996: add cxo and sleep-clk to gcc node
arm64: dts: qcom: sdm845: add bi_tcxo to camcc
arm64: dts: qcom: sdm845: enable dma for spi
arm64: dts: qcom: sdm845: Add gsi dma node
arm64: dts: qcom: sc7280: Add cpu OPP tables
arm64: dts: qcom: sc7280: Add EPSS L3 interconnect provider
arm64: dts: qcom: sm8450: Add LLCC/system-cache-controller node
arm64: dts: qcom: ipq6018: drop the clock-frequency property
arm64: dts: qcom: ipq8074: drop the clock-frequency property
arm64: dts: qcom: sm8450: add interconnect nodes
...
Link: https://lore.kernel.org/r/20220301053929.1809684-1-bjorn.andersson@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Add binding documentation for Fairphone 3 smartphone which is based on
Snapdragon 632 (sm632).
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220220201909.445468-10-luca@z3ntu.xyz
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Document Kryo 250 CPUs found in Qualcomm Snapdragon 632 (SDM632).
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220220201909.445468-5-luca@z3ntu.xyz
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Add compatibles for MSM8996 and APQ8096 and all supported devices
that have them.
Signed-off-by: Yassine Oudjana <y.oudjana@protonmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220203072226.51482-2-y.oudjana@protonmail.com
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Document the SM8450 HDK board
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220203090031.3128702-1-vkoul@kernel.org
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