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Pull cgroup updates from Tejun Heo:
- The misc controller now reports allocation rejections through
misc.events instead of printking
- cgroup_mutex usage is reduced to improve scalability of some
operations
- vhost helper threads are now assigned to the right cgroup on cgroup2
- Bug fixes
* 'for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: bpf: Move wrapper for __cgroup_bpf_*() to kernel/bpf/cgroup.c
cgroup: Fix rootcg cpu.stat guest double counting
cgroup: no need for cgroup_mutex for /proc/cgroups
cgroup: remove cgroup_mutex from cgroupstats_build
cgroup: reduce dependency on cgroup_mutex
cgroup: cgroup-v1: do not exclude cgrp_dfl_root
cgroup: Make rebind_subsystems() disable v2 controllers all at once
docs/cgroup: add entry for misc.events
misc_cgroup: remove error log to avoid log flood
misc_cgroup: introduce misc.events to count failures
Pull workqueue updates from Tejun Heo:
"Nothing too interesting. An optimization to short-circuit noop cpumask
updates, debug dump code reorg, and doc update"
* 'for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: doc: Call out the non-reentrance conditions
workqueue: Introduce show_one_worker_pool and show_one_workqueue.
workqueue: make sysfs of unbound kworker cpumask more clever
The SiFive FU740 Power Reset Clock Interrupt Controller is a reset line
provider so add respective reset-cells property to fix:
arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dt.yaml: clock-controller@10000000:
'#reset-cells' does not match any of the regexes: 'pinctrl-[0-9]+'
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210920144944.162431-1-krzysztof.kozlowski@canonical.com
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Silicon Labs is now part of Skyworks Inc. so update the URLs to the
datasheet and application note.
Signed-off-by: Jens Renner <renner@efe-gmbh.de>
Link: https://lore.kernel.org/r/20210913074823.115212-1-renner@efe-gmbh.de
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
* clk-composite-determine-fix:
clk: composite: Use rate_ops.determine_rate when also a mux is available
clk: composite: Also consider .determine_rate for rate + mux composites
* clk-allwinner:
clk: sunxi: sun8i-apb0: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi: sun6i-ar100: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi: sun6i-apb0-gates: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi: sun6i-apb0: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi-ng: ccu-sun9i-a80-usb: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi-ng: ccu-sun9i-a80-de: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi-ng: ccu-sun9i-a80: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi-ng: ccu-sun8i-r40: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi-ng: ccu-sun8i-de2: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi-ng: ccu-sun8i-a83t: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi-ng: ccu-sun50i-h6: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi-ng: ccu-sun50i-a64: Make use of the helper function devm_platform_ioremap_resource()
clk: sunxi: clk-mod0: Make use of the helper function devm_platform_ioremap_resource()
dt-bindings: clocks: Fix typo in the H6 compatible
clk: sunxi-ng: Use a separate lock for each CCU instance
clk: sunxi-ng: Prevent unbinding CCUs via sysfs
clk: sunxi-ng: Unregister clocks/resets when unbinding
clk: sunxi-ng: Add machine dependency to A83T CCU
clk: sunxi-ng: mux: Remove unused 'reg' field
* clk-amlogic:
clk: meson: meson8b: Make the video clock trees mutable
clk: meson: meson8b: Initialize the HDMI PLL registers
clk: meson: meson8b: Add the HDMI PLL M/N parameters
clk: meson: meson8b: Add the vid_pll_lvds_en gate clock
clk: meson: meson8b: Use CLK_SET_RATE_NO_REPARENT for vclk{,2}_in_sel
clk: meson: meson8b: Export the video clocks
* clk-samsung:
clk: samsung: describe drivers in Kconfig
clk: samsung: exynos5433: update apollo and atlas clock probing
clk: samsung: add support for CPU clocks
clk: samsung: Introduce Exynos850 clock driver
dt-bindings: clock: Document Exynos850 CMU bindings
dt-bindings: clock: Add bindings definitions for Exynos850 CMU
clk: samsung: clk-pll: Implement pll0831x PLL type
clk: samsung: clk-pll: Implement pll0822x PLL type
clk: samsung: s5pv210-audss: Make use of devm_platform_ioremap_resource()
clk: samsung: exynos5433: Make use of devm_platform_ioremap_resource()
clk: samsung: exynos4412-isp: Make use of devm_platform_ioremap_resource()
clk: samsung: exynos-audss: Make use of devm_platform_ioremap_resource()
* clk-imx: (21 commits)
clk: imx: Make CLK_IMX8ULP select MXC_CLK
clk: imx: imx6ul: Fix csi clk gate register
clk: imx: imx6ul: Move csi_sel mux to correct base register
clk: imx: Fix the build break when clk-imx8ulp build as module
clk: imx: Add the pcc reset controller support on imx8ulp
clk: imx: Add clock driver for imx8ulp
clk: imx: Update the pfdv2 for 8ulp specific support
clk: imx: disable the pfd when set pfdv2 clock rate
clk: imx: Add 'CLK_SET_RATE_NO_REPARENT' for composite-7ulp
clk: imx: disable i.mx7ulp composite clock during initialization
clk: imx: Update the compsite driver to support imx8ulp
clk: imx: Update the pllv4 to support imx8ulp
dt-bindings: clock: Add imx8ulp clock support
clk: imx: Rework imx_clk_hw_pll14xx wrapper
clk: imx: Rework all imx_clk_hw_composite wrappers
clk: imx: Rework all clk_hw_register_divider wrappers
clk: imx: Rework all clk_hw_register_mux wrappers
clk: imx: Rework all clk_hw_register_gate2 wrappers
clk: imx: Rework all clk_hw_register_gate wrappers
clk: imx: Make mux/mux2 clk based helpers use clk_hw based ones
...
* clk-ux500:
clk: ux500: Add driver for the reset portions of PRCC
dt-bindings: clock: u8500: Rewrite in YAML and extend
* clk-debugfs:
clk: use clk_core_get_rate_recalc() in clk_rate_get()
* More progress on the protected VM front, now with the full
fixed feature set as well as the limitation of some hypercalls
after initialisation.
* Cleanup of the RAZ/WI sysreg handling, which was pointlessly
complicated
* Fixes for the vgic placement in the IPA space, together with a
bunch of selftests
* More memcg accounting of the memory allocated on behalf of a guest
* Timer and vgic selftests
* Workarounds for the Apple M1 broken vgic implementation
* KConfig cleanups
* New kvmarm.mode=none option, for those who really dislike us
RISC-V:
* New KVM port.
x86:
* New API to control TSC offset from userspace
* TSC scaling for nested hypervisors on SVM
* Switch masterclock protection from raw_spin_lock to seqcount
* Clean up function prototypes in the page fault code and avoid
repeated memslot lookups
* Convey the exit reason to userspace on emulation failure
* Configure time between NX page recovery iterations
* Expose Predictive Store Forwarding Disable CPUID leaf
* Allocate page tracking data structures lazily (if the i915
KVM-GT functionality is not compiled in)
* Cleanups, fixes and optimizations for the shadow MMU code
s390:
* SIGP Fixes
* initial preparations for lazy destroy of secure VMs
* storage key improvements/fixes
* Log the guest CPNC
Starting from this release, KVM-PPC patches will come from
Michael Ellerman's PPC tree.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini:
"ARM:
- More progress on the protected VM front, now with the full fixed
feature set as well as the limitation of some hypercalls after
initialisation.
- Cleanup of the RAZ/WI sysreg handling, which was pointlessly
complicated
- Fixes for the vgic placement in the IPA space, together with a
bunch of selftests
- More memcg accounting of the memory allocated on behalf of a guest
- Timer and vgic selftests
- Workarounds for the Apple M1 broken vgic implementation
- KConfig cleanups
- New kvmarm.mode=none option, for those who really dislike us
RISC-V:
- New KVM port.
x86:
- New API to control TSC offset from userspace
- TSC scaling for nested hypervisors on SVM
- Switch masterclock protection from raw_spin_lock to seqcount
- Clean up function prototypes in the page fault code and avoid
repeated memslot lookups
- Convey the exit reason to userspace on emulation failure
- Configure time between NX page recovery iterations
- Expose Predictive Store Forwarding Disable CPUID leaf
- Allocate page tracking data structures lazily (if the i915 KVM-GT
functionality is not compiled in)
- Cleanups, fixes and optimizations for the shadow MMU code
s390:
- SIGP Fixes
- initial preparations for lazy destroy of secure VMs
- storage key improvements/fixes
- Log the guest CPNC
Starting from this release, KVM-PPC patches will come from Michael
Ellerman's PPC tree"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits)
RISC-V: KVM: fix boolreturn.cocci warnings
RISC-V: KVM: remove unneeded semicolon
RISC-V: KVM: Fix GPA passed to __kvm_riscv_hfence_gvma_xyz() functions
RISC-V: KVM: Factor-out FP virtualization into separate sources
KVM: s390: add debug statement for diag 318 CPNC data
KVM: s390: pv: properly handle page flags for protected guests
KVM: s390: Fix handle_sske page fault handling
KVM: x86: SGX must obey the KVM_INTERNAL_ERROR_EMULATION protocol
KVM: x86: On emulation failure, convey the exit reason, etc. to userspace
KVM: x86: Get exit_reason as part of kvm_x86_ops.get_exit_info
KVM: x86: Clarify the kvm_run.emulation_failure structure layout
KVM: s390: Add a routine for setting userspace CPU state
KVM: s390: Simplify SIGP Set Arch handling
KVM: s390: pv: avoid stalls when making pages secure
KVM: s390: pv: avoid stalls for kvm_s390_pv_init_vm
KVM: s390: pv: avoid double free of sida page
KVM: s390: pv: add macros for UVC CC values
s390/mm: optimize reset_guest_reference_bit()
s390/mm: optimize set_guest_storage_key()
s390/mm: no need for pte_alloc_map_lock() if we know the pmd is present
...
Merge APEI, PRM and documentation udpates for 5.16-rc1:
- Mark apei_hest_parse() static (Christoph Hellwig).
- Relax platform response timeout to 1 second after instructing it
to inject an error (Shuai Xue).
- Make the PRM code handle memory allocation and remapping failures
more gracefully and drop some unnecessary blank lines from that
code (Aubrey Li).
- Fix spelling mistake in the ACPI documentation (Colin Ian King).
* acpi-apei:
ACPI: APEI: mark apei_hest_parse() static
ACPI: APEI: EINJ: Relax platform response timeout to 1 second
* acpi-prm:
ACPI: PRM: Handle memory allocation and memory remap failure
ACPI: PRM: Remove unnecessary blank lines
* acpi-docs:
Documentation: ACPI: Fix spelling mistake "Millenium" -> "Millennium"
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Merge tag 'printk-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
- Extend %pGp print format to print hex value of the page flags
- Use kvmalloc instead of kmalloc to allocate devkmsg buffers
- Misc cleanup and warning fixes
* tag 'printk-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
vsprintf: Update %pGp documentation about that it prints hex value
lib/vsprintf.c: Amend static asserts for format specifier flags
vsprintf: Make %pGp print the hex value
test_printf: Append strings more efficiently
test_printf: Remove custom appending of '|'
test_printf: Remove separate page_flags variable
test_printf: Make pft array const
ia64: don't do IA64_CMPXCHG_DEBUG without CONFIG_PRINTK
printk: use gnu_printf format attribute for printk_sprint()
printk: avoid -Wsometimes-uninitialized warning
printk: use kvmalloc instead of kmalloc for devkmsg_user
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Merge tag 'integrity-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull integrity subsystem updates from Mimi Zohar:
"Other than the new gid IMA policy rule support and the RCU locking
fix, the couple of remaining changes are minor/trivial (e.g.
__ro_after_init, replacing strscpy)"
* tag 'integrity-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
evm: mark evm_fixmode as __ro_after_init
ima: Use strscpy instead of strlcpy
ima_policy: Remove duplicate 'the' in docs comment
ima: add gid support
ima: fix uid code style problems
ima: fix deadlock when traversing "ima_default_rules".
Pull operating performance points (OPP) framework updates for 5.16-rc1
from Viresh Kumar:
"- Fix return value of _opp_add_static_v2() helper (YueHaibing).
- Fix required-opp handle count (Pavankumar Kondeti).
- Resource managed OPP helpers, type update to
dev_pm_opp_attach_genpd() and update to their devfreq users, and
minor DT binding change (Dmitry Osipenko)."
* 'opp/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
dt-bindings: opp: Allow multi-worded OPP entry name
opp: Fix return in _opp_add_static_v2()
PM / devfreq: tegra30: Check whether clk_round_rate() returns zero rate
PM / devfreq: tegra30: Use resource-managed helpers
PM / devfreq: Add devm_devfreq_add_governor()
opp: Add more resource-managed variants of dev_pm_opp_of_add_table()
opp: Change type of dev_pm_opp_attach_genpd(names) argument
opp: Fix required-opps phandle array count check
- Remove socket skb caches
- Add a SO_RESERVE_MEM socket op to forward allocate buffer space
and avoid memory accounting overhead on each message sent
- Introduce managed neighbor entries - added by control plane and
resolved by the kernel for use in acceleration paths (BPF / XDP
right now, HW offload users will benefit as well)
- Make neighbor eviction on link down controllable by userspace
to work around WiFi networks with bad roaming implementations
- vrf: Rework interaction with netfilter/conntrack
- fq_codel: implement L4S style ce_threshold_ect1 marking
- sch: Eliminate unnecessary RCU waits in mini_qdisc_pair_swap()
BPF:
- Add support for new btf kind BTF_KIND_TAG, arbitrary type tagging
as implemented in LLVM14
- Introduce bpf_get_branch_snapshot() to capture Last Branch Records
- Implement variadic trace_printk helper
- Add a new Bloomfilter map type
- Track <8-byte scalar spill and refill
- Access hw timestamp through BPF's __sk_buff
- Disallow unprivileged BPF by default
- Document BPF licensing
Netfilter:
- Introduce egress hook for looking at raw outgoing packets
- Allow matching on and modifying inner headers / payload data
- Add NFT_META_IFTYPE to match on the interface type either from
ingress or egress
Protocols:
- Multi-Path TCP:
- increase default max additional subflows to 2
- rework forward memory allocation
- add getsockopts: MPTCP_INFO, MPTCP_TCPINFO, MPTCP_SUBFLOW_ADDRS
- MCTP flow support allowing lower layer drivers to configure msg
muxing as needed
- Automatic Multicast Tunneling (AMT) driver based on RFC7450
- HSR support the redbox supervision frames (IEC-62439-3:2018)
- Support for the ip6ip6 encapsulation of IOAM
- Netlink interface for CAN-FD's Transmitter Delay Compensation
- Support SMC-Rv2 eliminating the current same-subnet restriction,
by exploiting the UDP encapsulation feature of RoCE adapters
- TLS: add SM4 GCM/CCM crypto support
- Bluetooth: initial support for link quality and audio/codec
offload
Driver APIs:
- Add a batched interface for RX buffer allocation in AF_XDP
buffer pool
- ethtool: Add ability to control transceiver modules' power mode
- phy: Introduce supported interfaces bitmap to express MAC
capabilities and simplify PHY code
- Drop rtnl_lock from DSA .port_fdb_{add,del} callbacks
New drivers:
- WiFi driver for Realtek 8852AE 802.11ax devices (rtw89)
- Ethernet driver for ASIX AX88796C SPI device (x88796c)
Drivers:
- Broadcom PHYs
- support 72165, 7712 16nm PHYs
- support IDDQ-SR for additional power savings
- PHY support for QCA8081, QCA9561 PHYs
- NXP DPAA2: support for IRQ coalescing
- NXP Ethernet (enetc): support for software TCP segmentation
- Renesas Ethernet (ravb) - support DMAC and EMAC blocks of
Gigabit-capable IP found on RZ/G2L SoC
- Intel 100G Ethernet
- support for eswitch offload of TC/OvS flow API, including
offload of GRE, VxLAN, Geneve tunneling
- support application device queues - ability to assign Rx and Tx
queues to application threads
- PTP and PPS (pulse-per-second) extensions
- Broadcom Ethernet (bnxt)
- devlink health reporting and device reload extensions
- Mellanox Ethernet (mlx5)
- offload macvlan interfaces
- support HW offload of TC rules involving OVS internal ports
- support HW-GRO and header/data split
- support application device queues
- Marvell OcteonTx2:
- add XDP support for PF
- add PTP support for VF
- Qualcomm Ethernet switch (qca8k): support for QCA8328
- Realtek Ethernet DSA switch (rtl8366rb)
- support bridge offload
- support STP, fast aging, disabling address learning
- support for Realtek RTL8365MB-VC, a 4+1 port 10M/100M/1GE switch
- Mellanox Ethernet/IB switch (mlxsw)
- multi-level qdisc hierarchy offload (e.g. RED, prio and shaping)
- offload root TBF qdisc as port shaper
- support multiple routing interface MAC address prefixes
- support for IP-in-IP with IPv6 underlay
- MediaTek WiFi (mt76)
- mt7921 - ASPM, 6GHz, SDIO and testmode support
- mt7915 - LED and TWT support
- Qualcomm WiFi (ath11k)
- include channel rx and tx time in survey dump statistics
- support for 80P80 and 160 MHz bandwidths
- support channel 2 in 6 GHz band
- spectral scan support for QCN9074
- support for rx decapsulation offload (data frames in 802.3
format)
- Qualcomm phone SoC WiFi (wcn36xx)
- enable Idle Mode Power Save (IMPS) to reduce power consumption
during idle
- Bluetooth driver support for MediaTek MT7922 and MT7921
- Enable support for AOSP Bluetooth extension in Qualcomm WCN399x
and Realtek 8822C/8852A
- Microsoft vNIC driver (mana)
- support hibernation and kexec
- Google vNIC driver (gve)
- support for jumbo frames
- implement Rx page reuse
Refactor:
- Make all writes to netdev->dev_addr go thru helpers, so that we
can add this address to the address rbtree and handle the updates
- Various TCP cleanups and optimizations including improvements
to CPU cache use
- Simplify the gnet_stats, Qdisc stats' handling and remove
qdisc->running sequence counter
- Driver changes and API updates to address devlink locking
deficiencies
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core:
- Remove socket skb caches
- Add a SO_RESERVE_MEM socket op to forward allocate buffer space and
avoid memory accounting overhead on each message sent
- Introduce managed neighbor entries - added by control plane and
resolved by the kernel for use in acceleration paths (BPF / XDP
right now, HW offload users will benefit as well)
- Make neighbor eviction on link down controllable by userspace to
work around WiFi networks with bad roaming implementations
- vrf: Rework interaction with netfilter/conntrack
- fq_codel: implement L4S style ce_threshold_ect1 marking
- sch: Eliminate unnecessary RCU waits in mini_qdisc_pair_swap()
BPF:
- Add support for new btf kind BTF_KIND_TAG, arbitrary type tagging
as implemented in LLVM14
- Introduce bpf_get_branch_snapshot() to capture Last Branch Records
- Implement variadic trace_printk helper
- Add a new Bloomfilter map type
- Track <8-byte scalar spill and refill
- Access hw timestamp through BPF's __sk_buff
- Disallow unprivileged BPF by default
- Document BPF licensing
Netfilter:
- Introduce egress hook for looking at raw outgoing packets
- Allow matching on and modifying inner headers / payload data
- Add NFT_META_IFTYPE to match on the interface type either from
ingress or egress
Protocols:
- Multi-Path TCP:
- increase default max additional subflows to 2
- rework forward memory allocation
- add getsockopts: MPTCP_INFO, MPTCP_TCPINFO, MPTCP_SUBFLOW_ADDRS
- MCTP flow support allowing lower layer drivers to configure msg
muxing as needed
- Automatic Multicast Tunneling (AMT) driver based on RFC7450
- HSR support the redbox supervision frames (IEC-62439-3:2018)
- Support for the ip6ip6 encapsulation of IOAM
- Netlink interface for CAN-FD's Transmitter Delay Compensation
- Support SMC-Rv2 eliminating the current same-subnet restriction, by
exploiting the UDP encapsulation feature of RoCE adapters
- TLS: add SM4 GCM/CCM crypto support
- Bluetooth: initial support for link quality and audio/codec offload
Driver APIs:
- Add a batched interface for RX buffer allocation in AF_XDP buffer
pool
- ethtool: Add ability to control transceiver modules' power mode
- phy: Introduce supported interfaces bitmap to express MAC
capabilities and simplify PHY code
- Drop rtnl_lock from DSA .port_fdb_{add,del} callbacks
New drivers:
- WiFi driver for Realtek 8852AE 802.11ax devices (rtw89)
- Ethernet driver for ASIX AX88796C SPI device (x88796c)
Drivers:
- Broadcom PHYs
- support 72165, 7712 16nm PHYs
- support IDDQ-SR for additional power savings
- PHY support for QCA8081, QCA9561 PHYs
- NXP DPAA2: support for IRQ coalescing
- NXP Ethernet (enetc): support for software TCP segmentation
- Renesas Ethernet (ravb) - support DMAC and EMAC blocks of
Gigabit-capable IP found on RZ/G2L SoC
- Intel 100G Ethernet
- support for eswitch offload of TC/OvS flow API, including
offload of GRE, VxLAN, Geneve tunneling
- support application device queues - ability to assign Rx and Tx
queues to application threads
- PTP and PPS (pulse-per-second) extensions
- Broadcom Ethernet (bnxt)
- devlink health reporting and device reload extensions
- Mellanox Ethernet (mlx5)
- offload macvlan interfaces
- support HW offload of TC rules involving OVS internal ports
- support HW-GRO and header/data split
- support application device queues
- Marvell OcteonTx2:
- add XDP support for PF
- add PTP support for VF
- Qualcomm Ethernet switch (qca8k): support for QCA8328
- Realtek Ethernet DSA switch (rtl8366rb)
- support bridge offload
- support STP, fast aging, disabling address learning
- support for Realtek RTL8365MB-VC, a 4+1 port 10M/100M/1GE switch
- Mellanox Ethernet/IB switch (mlxsw)
- multi-level qdisc hierarchy offload (e.g. RED, prio and shaping)
- offload root TBF qdisc as port shaper
- support multiple routing interface MAC address prefixes
- support for IP-in-IP with IPv6 underlay
- MediaTek WiFi (mt76)
- mt7921 - ASPM, 6GHz, SDIO and testmode support
- mt7915 - LED and TWT support
- Qualcomm WiFi (ath11k)
- include channel rx and tx time in survey dump statistics
- support for 80P80 and 160 MHz bandwidths
- support channel 2 in 6 GHz band
- spectral scan support for QCN9074
- support for rx decapsulation offload (data frames in 802.3
format)
- Qualcomm phone SoC WiFi (wcn36xx)
- enable Idle Mode Power Save (IMPS) to reduce power consumption
during idle
- Bluetooth driver support for MediaTek MT7922 and MT7921
- Enable support for AOSP Bluetooth extension in Qualcomm WCN399x and
Realtek 8822C/8852A
- Microsoft vNIC driver (mana)
- support hibernation and kexec
- Google vNIC driver (gve)
- support for jumbo frames
- implement Rx page reuse
Refactor:
- Make all writes to netdev->dev_addr go thru helpers, so that we can
add this address to the address rbtree and handle the updates
- Various TCP cleanups and optimizations including improvements to
CPU cache use
- Simplify the gnet_stats, Qdisc stats' handling and remove
qdisc->running sequence counter
- Driver changes and API updates to address devlink locking
deficiencies"
* tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2122 commits)
Revert "net: avoid double accounting for pure zerocopy skbs"
selftests: net: add arp_ndisc_evict_nocarrier
net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter
net: arp: introduce arp_evict_nocarrier sysctl parameter
libbpf: Deprecate AF_XDP support
kbuild: Unify options for BTF generation for vmlinux and modules
selftests/bpf: Add a testcase for 64-bit bounds propagation issue.
bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
net: vmxnet3: remove multiple false checks in vmxnet3_ethtool.c
net: avoid double accounting for pure zerocopy skbs
tcp: rename sk_wmem_free_skb
netdevsim: fix uninit value in nsim_drv_configure_vfs()
selftests/bpf: Fix also no-alu32 strobemeta selftest
bpf: Add missing map_delete_elem method to bloom filter map
selftests/bpf: Add bloom map success test for userspace calls
bpf: Add alignment padding for "map_extra" + consolidate holes
bpf: Bloom filter map naming fixups
selftests/bpf: Add test cases for struct_ops prog
bpf: Add dummy BPF STRUCT_OPS for test purpose
...
Pull crypto updates from Herbert Xu:
"API:
- Delay boot-up self-test for built-in algorithms
Algorithms:
- Remove fallback path on arm64 as SIMD now runs with softirq off
Drivers:
- Add Keem Bay OCS ECC Driver"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (61 commits)
crypto: testmgr - fix wrong key length for pkcs1pad
crypto: pcrypt - Delay write to padata->info
crypto: ccp - Make use of the helper macro kthread_run()
crypto: sa2ul - Use the defined variable to clean code
crypto: s5p-sss - Add error handling in s5p_aes_probe()
crypto: keembay-ocs-ecc - Add Keem Bay OCS ECC Driver
dt-bindings: crypto: Add Keem Bay ECC bindings
crypto: ecc - Export additional helper functions
crypto: ecc - Move ecc.h to include/crypto/internal
crypto: engine - Add KPP Support to Crypto Engine
crypto: api - Do not create test larvals if manager is disabled
crypto: tcrypt - fix skcipher multi-buffer tests for 1420B blocks
hwrng: s390 - replace snprintf in show functions with sysfs_emit
crypto: octeontx2 - set assoclen in aead_do_fallback()
crypto: ccp - Fix whitespace in sev_cmd_buffer_len()
hwrng: mtk - Force runtime pm ops for sleep ops
crypto: testmgr - Only disable migration in crypto_disable_simd_for_test()
crypto: qat - share adf_enable_pf2vf_comms() from adf_pf2vf_msg.c
crypto: qat - extract send and wait from adf_vf2pf_request_version()
crypto: qat - add VF and PF wrappers to common send function
...
Not all OPP entries fit into a single word. In particular NVIDIA Tegra OPP
tables use multi-word names. Allow OPP entry to have multi-worded name
separated by hyphen. This silences DT checker warnings about wrong naming
scheme.
Reviewed-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This pull request contains the following branches:
fixes.2021.10.07a: Miscellaneous fixes.
scftorture.2021.09.16a: smp_call_function torture-test updates, most
notably better checking of module parameters.
tasks.2021.09.15a: Tasks-trace RCU updates that fix a number of rare
but important race-condition bugs.
torture.2021.09.13b: Other torture-test updates, most notably
better checking of module parameters. In addition, rcutorture
may now be run on CONFIG_PREEMPT_RT kernels.
torturescript.2021.09.16a: Torture-test scripting updates, most notably
specifying the new CONFIG_KCSAN_STRICT kconfig option rather
than maintaining an ever-changing list of individual KCSAN
kconfig options.
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Merge tag 'rcu.2021.11.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:
- Miscellaneous fixes
- Torture-test updates for smp_call_function(), most notably improved
checking of module parameters.
- Tasks-trace RCU updates that fix a number of rare but important
race-condition bugs.
- Other torture-test updates, most notably better checking of module
parameters. In addition, rcutorture may once again be run on
CONFIG_PREEMPT_RT kernels.
- Torture-test scripting updates, most notably specifying the new
CONFIG_KCSAN_STRICT kconfig option rather than maintaining an
ever-changing list of individual KCSAN kconfig options.
* tag 'rcu.2021.11.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (46 commits)
rcu: Fix rcu_dynticks_curr_cpu_in_eqs() vs noinstr
rcu: Always inline rcu_dynticks_task*_{enter,exit}()
torture: Make kvm-remote.sh print size of downloaded tarball
torture: Allot 1G of memory for scftorture runs
tools/rcu: Add an extract-stall script
scftorture: Warn on individual scf_torture_init() error conditions
scftorture: Count reschedule IPIs
scftorture: Account for weight_resched when checking for all zeroes
scftorture: Shut down if nonsensical arguments given
scftorture: Allow zero weight to exclude an smp_call_function*() category
rcu: Avoid unneeded function call in rcu_read_unlock()
rcu-tasks: Update comments to cond_resched_tasks_rcu_qs()
rcu-tasks: Fix IPI failure handling in trc_wait_for_one_reader
rcu-tasks: Fix read-side primitives comment for call_rcu_tasks_trace
rcu-tasks: Clarify read side section info for rcu_tasks_rude GP primitives
rcu-tasks: Correct comparisons for CPU numbers in show_stalled_task_trace
rcu-tasks: Correct firstreport usage in check_all_holdout_tasks_trace
rcu-tasks: Fix s/rcu_add_holdout/trc_add_holdout/ typo in comment
rcu-tasks: Move RTGS_WAIT_CBS to beginning of rcu_tasks_kthread() loop
rcu-tasks: Fix s/instruction/instructions/ typo in comment
...
- kprobes: Restructured stack unwinder to show properly on x86 when a stack
dump happens from a kretprobe callback.
- Fix to bootconfig parsing
- Have tracefs allow owner and group permissions by default (only denying
others). There's been pressure to allow non root to tracefs in a
controlled fashion, and using groups is probably the safest.
- Bootconfig memory managament updates.
- Bootconfig clean up to have the tools directory be less dependent on
changes in the kernel tree.
- Allow perf to be traced by function tracer.
- Rewrite of function graph tracer to be a callback from the function tracer
instead of having its own trampoline (this change will happen on an arch
by arch basis, and currently only x86_64 implements it).
- Allow multiple direct trampolines (bpf hooks to functions) be batched
together in one synchronization.
- Allow histogram triggers to add variables that can perform calculations
against the event's fields.
- Use the linker to determine architecture callbacks from the ftrace
trampoline to allow for proper parameter prototypes and prevent warnings
from the compiler.
- Extend histogram triggers to key off of variables.
- Have trace recursion use bit magic to determine preempt context over if
branches.
- Have trace recursion disable preemption as all use cases do anyway.
- Added testing for verification of tracing utilities.
- Various small clean ups and fixes.
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Merge tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
- kprobes: Restructured stack unwinder to show properly on x86 when a
stack dump happens from a kretprobe callback.
- Fix to bootconfig parsing
- Have tracefs allow owner and group permissions by default (only
denying others). There's been pressure to allow non root to tracefs
in a controlled fashion, and using groups is probably the safest.
- Bootconfig memory managament updates.
- Bootconfig clean up to have the tools directory be less dependent on
changes in the kernel tree.
- Allow perf to be traced by function tracer.
- Rewrite of function graph tracer to be a callback from the function
tracer instead of having its own trampoline (this change will happen
on an arch by arch basis, and currently only x86_64 implements it).
- Allow multiple direct trampolines (bpf hooks to functions) be batched
together in one synchronization.
- Allow histogram triggers to add variables that can perform
calculations against the event's fields.
- Use the linker to determine architecture callbacks from the ftrace
trampoline to allow for proper parameter prototypes and prevent
warnings from the compiler.
- Extend histogram triggers to key off of variables.
- Have trace recursion use bit magic to determine preempt context over
if branches.
- Have trace recursion disable preemption as all use cases do anyway.
- Added testing for verification of tracing utilities.
- Various small clean ups and fixes.
* tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (101 commits)
tracing/histogram: Fix semicolon.cocci warnings
tracing/histogram: Fix documentation inline emphasis warning
tracing: Increase PERF_MAX_TRACE_SIZE to handle Sentinel1 and docker together
tracing: Show size of requested perf buffer
bootconfig: Initialize ret in xbc_parse_tree()
ftrace: do CPU checking after preemption disabled
ftrace: disable preemption when recursion locked
tracing/histogram: Document expression arithmetic and constants
tracing/histogram: Optimize division by a power of 2
tracing/histogram: Covert expr to const if both operands are constants
tracing/histogram: Simplify handling of .sym-offset in expressions
tracing: Fix operator precedence for hist triggers expression
tracing: Add division and multiplication support for hist triggers
tracing: Add support for creating hist trigger variables from literal
selftests/ftrace: Stop tracing while reading the trace file by default
MAINTAINERS: Update KPROBES and TRACING entries
test_kprobes: Move it from kernel/ to lib/
docs, kprobes: Remove invalid URL and add new reference
samples/kretprobes: Fix return value if register_kretprobe() failed
lib/bootconfig: Fix the xbc_get_info kerneldoc
...
Alexei Starovoitov says:
====================
pull-request: bpf-next 2021-11-01
We've added 181 non-merge commits during the last 28 day(s) which contain
a total of 280 files changed, 11791 insertions(+), 5879 deletions(-).
The main changes are:
1) Fix bpf verifier propagation of 64-bit bounds, from Alexei.
2) Parallelize bpf test_progs, from Yucong and Andrii.
3) Deprecate various libbpf apis including af_xdp, from Andrii, Hengqi, Magnus.
4) Improve bpf selftests on s390, from Ilya.
5) bloomfilter bpf map type, from Joanne.
6) Big improvements to JIT tests especially on Mips, from Johan.
7) Support kernel module function calls from bpf, from Kumar.
8) Support typeless and weak ksym in light skeleton, from Kumar.
9) Disallow unprivileged bpf by default, from Pawan.
10) BTF_KIND_DECL_TAG support, from Yonghong.
11) Various bpftool cleanups, from Quentin.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (181 commits)
libbpf: Deprecate AF_XDP support
kbuild: Unify options for BTF generation for vmlinux and modules
selftests/bpf: Add a testcase for 64-bit bounds propagation issue.
bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
selftests/bpf: Fix also no-alu32 strobemeta selftest
bpf: Add missing map_delete_elem method to bloom filter map
selftests/bpf: Add bloom map success test for userspace calls
bpf: Add alignment padding for "map_extra" + consolidate holes
bpf: Bloom filter map naming fixups
selftests/bpf: Add test cases for struct_ops prog
bpf: Add dummy BPF STRUCT_OPS for test purpose
bpf: Factor out helpers for ctx access checking
bpf: Factor out a helper to prepare trampoline for struct_ops prog
selftests, bpf: Fix broken riscv build
riscv, libbpf: Add RISC-V (RV64) support to bpf_tracing.h
tools, build: Add RISC-V to HOSTARCH parsing
riscv, bpf: Increase the maximum number of iterations
selftests, bpf: Add one test for sockmap with strparser
selftests, bpf: Fix test_txmsg_ingress_parser error
...
====================
Link: https://lore.kernel.org/r/20211102013123.9005-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In most situations the neighbor discovery cache should be cleared on a
NOCARRIER event which is currently done unconditionally. But for wireless
roams the neighbor discovery cache can and should remain intact since
the underlying network has not changed.
This patch introduces a sysctl option ndisc_evict_nocarrier which can
be disabled by a wireless supplicant during a roam. This allows packets
to be sent after a roam immediately without having to wait for
neighbor discovery.
A user reported roughly a 1 second delay after a roam before packets
could be sent out (note, on IPv4). This delay was due to the ARP
cache being cleared. During testing of this same scenario using IPv6
no delay was noticed, but regardless there is no reason to clear
the ndisc cache for wireless roams.
Signed-off-by: James Prestwood <prestwoj@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This change introduces a new sysctl parameter, arp_evict_nocarrier.
When set (default) the ARP cache will be cleared on a NOCARRIER event.
This new option has been defaulted to '1' which maintains existing
behavior.
Clearing the ARP cache on NOCARRIER is relatively new, introduced by:
commit 859bd2ef1fc1110a8031b967ee656c53a6260a76
Author: David Ahern <dsahern@gmail.com>
Date: Thu Oct 11 20:33:49 2018 -0700
net: Evict neighbor entries on carrier down
The reason for this changes is to prevent the ARP cache from being
cleared when a wireless device roams. Specifically for wireless roams
the ARP cache should not be cleared because the underlying network has not
changed. Clearing the ARP cache in this case can introduce significant
delays sending out packets after a roam.
A user reported such a situation here:
https://lore.kernel.org/linux-wireless/CACsRnHWa47zpx3D1oDq9JYnZWniS8yBwW1h0WAVZ6vrbwL_S0w@mail.gmail.com/
After some investigation it was found that the kernel was holding onto
packets until ARP finished which resulted in this 1 second delay. It
was also found that the first ARP who-has was never responded to,
which is actually what caues the delay. This change is more or less
working around this behavior, but again, there is no reason to clear
the cache on a roam anyways.
As for the unanswered who-has, we know the packet made it OTA since
it was seen while monitoring. Why it never received a response is
unknown. In any case, since this is a problem on the AP side of things
all that can be done is to work around it until it is solved.
Some background on testing/reproducing the packet delay:
Hardware:
- 2 access points configured for Fast BSS Transition (Though I don't
see why regular reassociation wouldn't have the same behavior)
- Wireless station running IWD as supplicant
- A device on network able to respond to pings (I used one of the APs)
Procedure:
- Connect to first AP
- Ping once to establish an ARP entry
- Start a tcpdump
- Roam to second AP
- Wait for operstate UP event, and note the timestamp
- Start pinging
Results:
Below is the tcpdump after UP. It was recorded the interface went UP at
10:42:01.432875.
10:42:01.461871 ARP, Request who-has 192.168.254.1 tell 192.168.254.71, length 28
10:42:02.497976 ARP, Request who-has 192.168.254.1 tell 192.168.254.71, length 28
10:42:02.507162 ARP, Reply 192.168.254.1 is-at ac:86:74:55:b0:20, length 46
10:42:02.507185 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 1, length 64
10:42:02.507205 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 2, length 64
10:42:02.507212 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 3, length 64
10:42:02.507219 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 4, length 64
10:42:02.507225 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 5, length 64
10:42:02.507232 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 6, length 64
10:42:02.515373 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 1, length 64
10:42:02.521399 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 2, length 64
10:42:02.521612 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 3, length 64
10:42:02.521941 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 4, length 64
10:42:02.522419 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 5, length 64
10:42:02.523085 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 6, length 64
You can see the first ARP who-has went out very quickly after UP, but
was never responded to. Nearly a second later the kernel retries and
gets a response. Only then do the ping packets go out. If an ARP entry
is manually added prior to UP (after the cache is cleared) it is seen
that the first ping is never responded to, so its not only an issue with
ARP but with data packets in general.
As mentioned prior, the wireless interface was also monitored to verify
the ping/ARP packet made it OTA which was observed to be true.
Signed-off-by: James Prestwood <prestwoj@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
New drivers:
- Maxim MAX6620
Notable functional enhancements:
- Add Asus WMI support to nct6775 driver, and list boards supporting it
- Move TMP461 support from tm401 driver to lm90 driver
- Add support for fanX_min, fanX_max and fanX_target to dell-smm driver,
and clean it up while doing so
- Extend mlxreg-fan driver to support multiple cooling devices and
multiple PWM channels. Also increase number of supported fan tachometers.
- Add a new customer ID (for ASRock) to nct6683 driver
- Make temperature/voltage sensors on nct7802 configurable
- Add mfg_id debugfs entry to pmbus/ibm-cffps driver
- Support configurable sense resistor values in pmbus/lm25066,
and fix various coefficients
- Use generic notification mechanism in raspberrypi driver
Notable cleanup:
- Convert various devicetree bindings to dtschema, and add missing bindings
- Convert i5500_temp and tmp103 drivers to devm_hwmon_device_register_with_info
- Clean up non-bool "valid" data fields
- Improve devicetree configurability for tmp421 driver
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Merge tag 'hwmon-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
"New driver:
- Maxim MAX6620
Notable functional enhancements:
- Add Asus WMI support to nct6775 driver, and list boards supporting
it
- Move TMP461 support from tm401 driver to lm90 driver
- Add support for fanX_min, fanX_max and fanX_target to dell-smm
driver, and clean it up while doing so
- Extend mlxreg-fan driver to support multiple cooling devices and
multiple PWM channels. Also increase number of supported fan
tachometers.
- Add a new customer ID (for ASRock) to nct6683 driver
- Make temperature/voltage sensors on nct7802 configurable
- Add mfg_id debugfs entry to pmbus/ibm-cffps driver
- Support configurable sense resistor values in pmbus/lm25066, and
fix various coefficients
- Use generic notification mechanism in raspberrypi driver
Notable cleanups:
- Convert various devicetree bindings to dtschema, and add missing
bindings
- Convert i5500_temp and tmp103 drivers to
devm_hwmon_device_register_with_info
- Clean up non-bool "valid" data fields
- Improve devicetree configurability for tmp421 driver"
* tag 'hwmon-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (73 commits)
hwmon: (nct7802) Add of_node_put() before return
hwmon: (tmp401) Drop support for TMP461
hwmon: (lm90) Add basic support for TI TMP461
hwmon: (lm90) Introduce flag indicating extended temperature support
hwmon: (nct6775) add ProArt X570-CREATOR WIFI.
hwmon: (nct7802) Make temperature/voltage sensors configurable
dt-bindings: hwmon: Add nct7802 bindings
hwmon: (dell-smm) Speed up setting of fan speed
hwmon: (dell-smm) Add comment explaining usage of i8k_config_data[]
hwmon: (dell-smm) Return -ENOIOCTLCMD instead of -EINVAL
hwmon: (dell-smm) Use strscpy_pad()
hwmon: (dell-smm) Sort includes in alphabetical order
hwmon: (tmp421) Add of_node_put() before return
hwmon: (max31722) Warn about failure to put device in stand-by in .remove()
hwmon: (acpi_power_meter) Use acpi_bus_get_acpi_device()
hwmon: (dell-smm) Add support for fanX_min, fanX_max and fanX_target
dt-bindings: hwmon: allow specifying channels for tmp421
hwmon: (tmp421) ignore non-channel related DT nodes
hwmon: (tmp421) update documentation
hwmon: (tmp421) support HWMON_T_ENABLE
...
This is quite a quiet release for SPI, there's been a bit of cleanup to
the core from Uwe but nothing functionality wise. We have added several
new drivers, Cadence XSPI, Ingenic JZ47xx, Qualcomm SC7280 and SC7180
and Xilinx Versal OSPI.
There's a trivial conflict in the Tegra driver that's been causing
issues.
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Merge tag 'spi-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"This is quite a quiet release for SPI, there's been a bit of cleanup
to the core from Uwe but nothing functionality wise.
We have added several new drivers, Cadence XSPI, Ingenic JZ47xx,
Qualcomm SC7280 and SC7180 and Xilinx Versal OSPI"
* tag 'spi-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (41 commits)
spi: Convert NXP flexspi to json schema
spi: spi-geni-qcom: Add support for GPI dma
spi: fsi: Fix contention in the FSI2SPI engine
spi: spi-rpc-if: Check return value of rpcif_sw_init()
spi: tegra210-quad: Put device into suspend on driver removal
spi: tegra20-slink: Put device into suspend on driver removal
spi: bcm-qspi: Fix missing clk_disable_unprepare() on error in bcm_qspi_probe()
spi: at91-usart: replacing legacy gpio interface for gpiod
spi: replace snprintf in show functions with sysfs_emit
spi: cadence: Add of_node_put() before return
spi: orion: Add of_node_put() before goto
spi: cadence-quadspi: fix dma_unmap_single() call
spi: tegra20: fix build with CONFIG_PM_SLEEP=n
spi: bcm-qspi: add support for 3-wire mode for half duplex transfer
spi: bcm-qspi: Add mspi spcr3 32/64-bits xfer mode
spi: Make several public functions private to spi.c
spi: Reorder functions to simplify the next commit
spi: Remove unused function spi_busnum_to_master()
spi: Move comment about chipselect check to the right place
spi: fsi: Print status on error
...
Thanks to the removal of the unused TPS80021 driver the regulator
updates for this cycle actually have a negative diffstat. Otherwise
it's been quite a quiet release, lots of fixes and small improvements
with the biggest individual changes being several conversions of DT
bindings to YAML format.
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Merge tag 'regulator-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"Thanks to the removal of the unused TPS80021 driver the regulator
updates for this cycle actually have a negative diffstat.
Otherwise it's been quite a quiet release, lots of fixes and small
improvements with the biggest individual changes being several
conversions of DT bindings to YAML format"
* tag 'regulator-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (34 commits)
regulator: Don't error out fixed regulator in regulator_sync_voltage()
regulator: tps80031: Remove driver
regulator: Fix SY7636A breakage
regulator: uniphier: Add binding for NX1 SoC
regulator: uniphier: Add USB-VBUS compatible string for NX1 SoC
regulator: qcom,rpmh: Add compatible for PM6350
regulator: qcom-rpmh: Add PM6350 regulators
regulator: sy7636a: Remove requirement on sy7636a mfd
regulator: tps62360: replacing legacy gpio interface for gpiod
regulator: lp872x: Remove lp872x_dvs_state
regulator: lp872x: replacing legacy gpio interface for gpiod
regulator: dt-bindings: samsung,s5m8767: convert to dtschema
regulator: dt-bindings: samsung,s2mpa01: convert to dtschema
regulator: dt-bindings: samsung,s2m: convert to dtschema
dt-bindings: clock: samsung,s2mps11: convert to dtschema
regulator: dt-bindings: samsung,s5m8767: correct s5m8767,pmic-buck-default-dvs-idx property
regulator: s5m8767: do not use reset value as DVS voltage if GPIO DVS is disabled
regulator: dt-bindings: maxim,max8973: convert to dtschema
regulator: dt-bindings: maxim,max8997: convert to dtschema
regulator: dt-bindings: maxim,max8952: convert to dtschema
...
consolidate msm8994 type apcs_data
- mtk: fix clock id usage
- apple: add driver for ASC/M3 controllers
- pcc: reorganise PCC pcc_mbox_request_channel
add support for PCCT extended PCC subspaces
- misc: make use of devm_platform_ioremap_resource()
change Altera, PCC and Apple mailbox maintainers
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Merge tag 'mailbox-v5.16' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
"qcom:
- add support for qcm2290
- consolidate msm8994 type apcs_data
mtk:
- fix clock id usage
apple:
- add driver for ASC/M3 controllers
pcc:
- reorganise PCC pcc_mbox_request_channel
- add support for PCCT extended PCC subspaces
misc:
- make use of devm_platform_ioremap_resource()
- change Altera, PCC and Apple mailbox maintainers"
* tag 'mailbox-v5.16' of git://git.linaro.org/landing-teams/working/fujitsu/integration: (38 commits)
mailbox: imx: support i.MX8ULP S4 MU
dt-bindings: mailbox: imx-mu: add i.MX8ULP S400 MU support
ACPI/PCC: Add maintainer for PCC mailbox driver
mailbox: pcc: Move bulk of PCCT parsing into pcc_mbox_probe
mailbox: pcc: Add support for PCCT extended PCC subspaces(type 3/4)
mailbox: pcc: Drop handling invalid bit-width in {read,write}_register
mailbox: pcc: Avoid accessing PCCT table in pcc_send_data and pcc_mbox_irq
mailbox: pcc: Add PCC register bundle and associated accessor functions
mailbox: pcc: Rename doorbell ack to platform interrupt ack register
mailbox: pcc: Use PCC mailbox channel pointer instead of standard
mailbox: pcc: Add pcc_mbox_chan structure to hold shared memory region info
mailbox: pcc: Consolidate subspace doorbell register parsing
mailbox: pcc: Consolidate subspace interrupt information parsing
mailbox: pcc: Refactor all PCC channel information into a structure
mailbox: pcc: Fix kernel doc warnings
mailbox: apple: Add driver for Apple mailboxes
dt-bindings: mailbox: Add Apple mailbox bindings
MAINTAINERS: Add Apple mailbox files
mailbox: mtk-cmdq: Fix local clock ID usage
mailbox: mtk-cmdq: Validate alias_id on probe
...
- Update maintainer and URL for the mmc-utils
- Set default label for slot-gpio in case of no con-id
- Convert MMC card DT bindings to a schema
- Add optional host specific tuning support for eMMC HS400
- Add error handling of add_disk()
MMC host:
- mtk-sd: Add host specific tuning support for eMMC HS400
- mtk-sd: Make DMA handling more robust
- dw_mmc: Prevent hangs for some data writes
- dw_mmc: Move away from using the ->init_card() callback
- mxs-mmc: Manage the regulator in the error path and in ->remove()
- sdhci-cadence: Add support for the Microchip MPFS variant
- sdhci-esdhc-imx: Add support for the NXP S32G2 variant
- sdhci-of-arasan: Add support for the Intel Thunder Bay variant
- sdhci-omap: Prepare to support more SoCs
- sdhci-omap: Add support for omap3 and omap4 variants
- sdhci-omap: Add support for power management
- sdhci-omap: Add support for system wakeups
- sdhci-msm: Add support for the msm8226 variant
- sdhci-sprd: Verify that the DLL locks according to spec
MEMSTICK:
- Add error handling of add_disk()
- A couple of small fixes and improvements
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Merge tag 'mmc-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC and MEMSTICK updates from Ulf Hansson:
"MMC core:
- Update maintainer and URL for the mmc-utils
- Set default label for slot-gpio in case of no con-id
- Convert MMC card DT bindings to a schema
- Add optional host specific tuning support for eMMC HS400
- Add error handling of add_disk()
MMC host:
- mtk-sd: Add host specific tuning support for eMMC HS400
- mtk-sd: Make DMA handling more robust
- dw_mmc: Prevent hangs for some data writes
- dw_mmc: Move away from using the ->init_card() callback
- mxs-mmc: Manage the regulator in the error path and in ->remove()
- sdhci-cadence: Add support for the Microchip MPFS variant
- sdhci-esdhc-imx: Add support for the NXP S32G2 variant
- sdhci-of-arasan: Add support for the Intel Thunder Bay variant
- sdhci-omap: Prepare to support more SoCs
- sdhci-omap: Add support for omap3 and omap4 variants
- sdhci-omap: Add support for power management
- sdhci-omap: Add support for system wakeups
- sdhci-msm: Add support for the msm8226 variant
- sdhci-sprd: Verify that the DLL locks according to spec
MEMSTICK:
- Add error handling of add_disk()
- A couple of small fixes and improvements"
* tag 'mmc-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (60 commits)
docs: mmc: update maintainer name and URL
mmc: dw_mmc: exynos: Fix spelling mistake "candiates" -> candidates
MAINTAINERS: drop obsolete file pattern in SDHCI DRIVER section
mmc: sdhci-esdhc-imx: add NXP S32G2 support
dt-bindings: mmc: fsl-imx-esdhc: add NXP S32G2 support
mmc: dw_mmc: Drop use of ->init_card() callback
mmc: sdhci-omap: Fix build if CONFIG_PM_SLEEP is not set
mmc: sdhci-omap: Remove forward declaration of sdhci_omap_context_save()
memstick: r592: Fix a UAF bug when removing the driver
mmc: mxs-mmc: disable regulator on error and in the remove function
mmc: sdhci-omap: Configure optional wakeirq
mmc: sdhci-omap: Allow SDIO card power off and enable aggressive PM
mmc: sdhci-omap: Implement PM runtime functions
mmc: sdhci-omap: Add omap_offset to support omap3 and earlier
mmc: sdhci-omap: Handle voltages to add support omap4
dt-bindings: sdhci-omap: Update binding for legacy SoCs
mmc: sdhci-pci: Remove dead code (rst_n_gpio et al)
mmc: sdhci-pci: Remove dead code (cd_gpio, cd_irq et al)
mmc: sdhci-pci: Remove dead code (struct sdhci_pci_data et al)
mmc: sdhci: Remove unused prototype declaration in the header
...
A new type of low-level IPMI driver is added for direct communication
over the IPMI message bus without a BMC between the driver and the bus.
Other than that, lots of little bug fixes and enhancements.
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Merge tag 'for-linus-5.16-1' of https://github.com/cminyard/linux-ipmi
Pull IPMI driver updates from Corey Minyard:
"A new type of low-level IPMI driver is added for direct communication
over the IPMI message bus without a BMC between the driver and the
bus.
Other than that, lots of little bug fixes and enhancements"
* tag 'for-linus-5.16-1' of https://github.com/cminyard/linux-ipmi:
ipmi: kcs_bmc: Fix a memory leak in the error handling path of 'kcs_bmc_serio_add_device()'
char: ipmi: replace snprintf in show functions with sysfs_emit
ipmi: ipmb: fix dependencies to eliminate build error
ipmi:ipmb: Add OF support
ipmi: bt: Add ast2600 compatible string
ipmi: bt-bmc: Use registers directly
ipmi: ipmb: Fix off-by-one size check on rcvlen
ipmi:ssif: Use depends on, not select, for I2C
ipmi: Add docs for the IPMI IPMB driver
ipmi: Add docs for IPMB direct addressing
ipmi:ipmb: Add initial support for IPMI over IPMB
ipmi: Add support for IPMB direct messages
ipmi: Export ipmb_checksum()
ipmi: Fix a typo
ipmi: Check error code before processing BMC response
ipmi:devintf: Return a proper error when recv buffer too small
ipmi: Disable some operations during a panic
ipmi:watchdog: Set panic count to proper value on a panic
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Merge tag 'media/v5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- New driver for SK Hynix Hi-846 8M pixel camera
- New driver for the ov13b10 camera
- New driver for Renesas R-Car ISP
- mtk-vcodec gained support for version 2 of decoder firmware ABI
- The legacy sir_ir driver got removed
- videobuf2: the vb2_mem_ops kAPI had some improvements
- lots of cleanups, fixes and new features at device drivers
* tag 'media/v5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (328 commits)
media: venus: core: Add sdm660 DT compatible and resource struct
media: dt-bindings: media: venus: Add sdm660 dt schema
media: venus: vdec: decoded picture buffer handling during reconfig sequence
media: venus: Handle fatal errors during encoding and decoding
media: venus: helpers: Add helper to mark fatal vb2 error
media: venus: hfi: Check for sys error on session hfi functions
media: venus: Make sys_error flag an atomic bitops
media: venus: venc: Use pmruntime autosuspend
media: allegro: write vui parameters for HEVC
media: allegro: nal-hevc: implement generator for vui
media: allegro: write correct colorspace into SPS
media: allegro: extract nal value lookup functions to header
media: allegro: correctly scale the bit rate in SPS
media: allegro: remove external QP table
media: allegro: fix row and column in response message
media: allegro: add control to disable encoder buffer
media: allegro: add encoder buffer support
media: allegro: add pm_runtime support
media: allegro: lookup VCU settings
media: allegro: fix module removal if initialization failed
...
Fix warnings as:
arch/arm/boot/dts/qcom-sdx55-mtp.dt.yaml: ipa@1e40000: iommus: [[21, 1504, 0], [21, 1506, 0]] is too long
From schema: Documentation/devicetree/bindings/net/qcom,ipa.yaml
Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20211026163240.131052-1-david@ixit.cz
Signed-off-by: Rob Herring <robh@kernel.org>
If the divisor is a constant and zero, the undeifned case can be
detected and an error returned instead of -1.
Link: https://lkml.kernel.org/r/20211029183339.3216491-3-kaleshsingh@google.com
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
- set spec_store_bypass_disable & spectre_v2_user to prctl (Andrea Arcangeli)
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Merge tag 'seccomp-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp updates from Kees Cook:
"These are x86-specific, but I carried these since they're also
seccomp-specific.
This flips the defaults for spec_store_bypass_disable and
spectre_v2_user from "seccomp" to "prctl", as enough time has passed
to allow system owners to have updated the defensive stances of their
various workloads, and it's long overdue to unpessimize seccomp
threads.
Extensive rationale and details are in Andrea's main patch.
Summary:
- set spec_store_bypass_disable & spectre_v2_user to prctl (Andrea Arcangeli)"
* tag 'seccomp-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
x86: deduplicate the spectre_v2_user documentation
x86: change default to spec_store_bypass_disable=prctl spectre_v2_user=prctl
Lots of new features and fixes:
* Added TOC (table of content) support, which is a debugging feature which is
either initiated by pressing the TOC button or via command in the BMC. If
pressed the Linux built-in KDB/KGDB will be called (Sven Schnelle)
* Fix CONFIG_PREEMPT (Sven)
* Fix unwinder on 64-bit kernels (Sven)
* Various kgdb fixes (Sven)
* Added KFENCE support (me)
* Switch to ARCH_STACKWALK implementation (me)
* Fix ptrace check on syscall return (me)
* Fix kernel crash with fixmaps on PA1.x machines (me)
* Move thread_info into task struct, aka CONFIG_THREAD_INFO_IN_TASK (me)
* Updated defconfigs
* Smaller cleanups, including Makefile cleanups (Masahiro Yamada),
use kthread_run() macro (Cai Huoqing), use swap() macro (Yihao Han).
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Merge tag 'for-5.16/parisc-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"Lots of new features and fixes:
- Added TOC (table of content) support, which is a debugging feature
which is either initiated by pressing the TOC button or via command
in the BMC. If pressed the Linux built-in KDB/KGDB will be called
(Sven Schnelle)
- Fix CONFIG_PREEMPT (Sven)
- Fix unwinder on 64-bit kernels (Sven)
- Various kgdb fixes (Sven)
- Added KFENCE support (me)
- Switch to ARCH_STACKWALK implementation (me)
- Fix ptrace check on syscall return (me)
- Fix kernel crash with fixmaps on PA1.x machines (me)
- Move thread_info into task struct, aka CONFIG_THREAD_INFO_IN_TASK
(me)
- Updated defconfigs
- Smaller cleanups, including Makefile cleanups (Masahiro Yamada),
use kthread_run() macro (Cai Huoqing), use swap() macro (Yihao
Han)"
* tag 'for-5.16/parisc-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (36 commits)
parisc: Fix set_fixmap() on PA1.x CPUs
parisc: Use swap() to swap values in setup_bootmem()
parisc: Update defconfigs
parisc: decompressor: clean up Makefile
parisc: decompressor: remove repeated depenency of misc.o
parisc: Remove unused constants from asm-offsets.c
parisc/ftrace: use static key to enable/disable function graph tracer
parisc/ftrace: set function trace function
parisc: Make use of the helper macro kthread_run()
parisc: mark xchg functions notrace
parisc: enhance warning regarding usage of O_NONBLOCK
parisc: Drop ifdef __KERNEL__ from non-uapi kernel headers
parisc: Use PRIV_USER and PRIV_KERNEL in ptrace.h
parisc: Use PRIV_USER in syscall.S
parisc/kgdb: add kgdb_roundup() to make kgdb work with idle polling
parisc: Move thread_info into task struct
parisc: add support for TOC (transfer of control)
parisc/firmware: add functions to retrieve TOC data
parisc: add PIM TOC data structures
parisc: move virt_map macro to assembly.h
...
- Support for the Arm8.6 timer extensions, including a self-synchronising
view of the system registers to elide some expensive ISB instructions.
- Exception table cleanup and rework so that the fixup handlers appear
correctly in backtraces.
- A handful of miscellaneous changes, the main one being selection of
CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK.
- More mm and pgtable cleanups.
- KASAN support for "asymmetric" MTE, where tag faults are reported
synchronously for loads (via an exception) and asynchronously for
stores (via a register).
- Support for leaving the MMU enabled during kexec relocation, which
significantly speeds up the operation.
- Minor improvements to our perf PMU drivers.
- Improvements to the compat vDSO build system, particularly when
building with LLVM=1.
- Preparatory work for handling some Coresight TRBE tracing errata.
- Cleanup and refactoring of the SVE code to pave the way for SME
support in future.
- Ensure SCS pages are unpoisoned immediately prior to freeing them
when KASAN is enabled for the vmalloc area.
- Try moving to the generic pfn_valid() implementation again now that
the DMA mapping issue from last time has been resolved.
- Numerous improvements and additions to our FPSIMD and SVE selftests.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's the usual summary below, but the highlights are support for
the Armv8.6 timer extensions, KASAN support for asymmetric MTE, the
ability to kexec() with the MMU enabled and a second attempt at
switching to the generic pfn_valid() implementation.
Summary:
- Support for the Arm8.6 timer extensions, including a
self-synchronising view of the system registers to elide some
expensive ISB instructions.
- Exception table cleanup and rework so that the fixup handlers
appear correctly in backtraces.
- A handful of miscellaneous changes, the main one being selection of
CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK.
- More mm and pgtable cleanups.
- KASAN support for "asymmetric" MTE, where tag faults are reported
synchronously for loads (via an exception) and asynchronously for
stores (via a register).
- Support for leaving the MMU enabled during kexec relocation, which
significantly speeds up the operation.
- Minor improvements to our perf PMU drivers.
- Improvements to the compat vDSO build system, particularly when
building with LLVM=1.
- Preparatory work for handling some Coresight TRBE tracing errata.
- Cleanup and refactoring of the SVE code to pave the way for SME
support in future.
- Ensure SCS pages are unpoisoned immediately prior to freeing them
when KASAN is enabled for the vmalloc area.
- Try moving to the generic pfn_valid() implementation again now that
the DMA mapping issue from last time has been resolved.
- Numerous improvements and additions to our FPSIMD and SVE
selftests"
[ armv8.6 timer updates were in a shared branch and already came in
through -tip in the timer pull - Linus ]
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (85 commits)
arm64: Select POSIX_CPU_TIMERS_TASK_WORK
arm64: Document boot requirements for FEAT_SME_FA64
arm64/sve: Fix warnings when SVE is disabled
arm64/sve: Add stub for sve_max_virtualisable_vl()
arm64: errata: Add detection for TRBE write to out-of-range
arm64: errata: Add workaround for TSB flush failures
arm64: errata: Add detection for TRBE overwrite in FILL mode
arm64: Add Neoverse-N2, Cortex-A710 CPU part definition
selftests: arm64: Factor out utility functions for assembly FP tests
arm64: vmlinux.lds.S: remove `.fixup` section
arm64: extable: add load_unaligned_zeropad() handler
arm64: extable: add a dedicated uaccess handler
arm64: extable: add `type` and `data` fields
arm64: extable: use `ex` for `exception_table_entry`
arm64: extable: make fixup_exception() return bool
arm64: extable: consolidate definitions
arm64: gpr-num: support W registers
arm64: factor out GPR numbering helpers
arm64: kvm: use kvm_exception_table_entry
arm64: lib: __arch_copy_to_user(): fold fixups into body
...
which EPC pages can be put back into their uninitialized state without
having to reopen /dev/sgx_vepc, which could not be possible anymore
after startup due to security policies.
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Merge tag 'x86_sgx_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SGX updates from Borislav Petkov:
"Add a SGX_IOC_VEPC_REMOVE ioctl to the /dev/sgx_vepc virt interface
with which EPC pages can be put back into their uninitialized state
without having to reopen /dev/sgx_vepc, which could not be possible
anymore after startup due to security policies"
* tag 'x86_sgx_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sgx/virt: implement SGX_IOC_VEPC_REMOVE ioctl
x86/sgx/virt: extract sgx_vepc_remove_page
- Cleanup of extable fixup handling to be more robust, which in turn
allows to make the FPU exception fixups more robust as well.
- Change the return code for signal frame related failures from explicit
error codes to a boolean fail/success as that's all what the calling
code evaluates.
- A large refactoring of the FPU code to prepare for adding AMX support:
- Distangle the public header maze and remove especially the misnomed
kitchen sink internal.h which is despite it's name included all over
the place.
- Add a proper abstraction for the register buffer storage (struct
fpstate) which allows to dynamically size the buffer at runtime by
flipping the pointer to the buffer container from the default
container which is embedded in task_struct::tread::fpu to a
dynamically allocated container with a larger register buffer.
- Convert the code over to the new fpstate mechanism.
- Consolidate the KVM FPU handling by moving the FPU related code into
the FPU core which removes the number of exports and avoids adding
even more export when AMX has to be supported in KVM. This also
removes duplicated code which was of course unnecessary different and
incomplete in the KVM copy.
- Simplify the KVM FPU buffer handling by utilizing the new fpstate
container and just switching the buffer pointer from the user space
buffer to the KVM guest buffer when entering vcpu_run() and flipping
it back when leaving the function. This cuts the memory requirements
of a vCPU for FPU buffers in half and avoids pointless memory copy
operations.
This also solves the so far unresolved problem of adding AMX support
because the current FPU buffer handling of KVM inflicted a circular
dependency between adding AMX support to the core and to KVM. With
the new scheme of switching fpstate AMX support can be added to the
core code without affecting KVM.
- Replace various variables with proper data structures so the extra
information required for adding dynamically enabled FPU features (AMX)
can be added in one place
- Add AMX (Advanved Matrix eXtensions) support (finally):
AMX is a large XSTATE component which is going to be available with
Saphire Rapids XEON CPUs. The feature comes with an extra MSR (MSR_XFD)
which allows to trap the (first) use of an AMX related instruction,
which has two benefits:
1) It allows the kernel to control access to the feature
2) It allows the kernel to dynamically allocate the large register
state buffer instead of burdening every task with the the extra 8K
or larger state storage.
It would have been great to gain this kind of control already with
AVX512.
The support comes with the following infrastructure components:
1) arch_prctl() to
- read the supported features (equivalent to XGETBV(0))
- read the permitted features for a task
- request permission for a dynamically enabled feature
Permission is granted per process, inherited on fork() and cleared
on exec(). The permission policy of the kernel is restricted to
sigaltstack size validation, but the syscall obviously allows
further restrictions via seccomp etc.
2) A stronger sigaltstack size validation for sys_sigaltstack(2) which
takes granted permissions and the potentially resulting larger
signal frame into account. This mechanism can also be used to
enforce factual sigaltstack validation independent of dynamic
features to help with finding potential victims of the 2K
sigaltstack size constant which is broken since AVX512 support was
added.
3) Exception handling for #NM traps to catch first use of a extended
feature via a new cause MSR. If the exception was caused by the use
of such a feature, the handler checks permission for that
feature. If permission has not been granted, the handler sends a
SIGILL like the #UD handler would do if the feature would have been
disabled in XCR0. If permission has been granted, then a new fpstate
which fits the larger buffer requirement is allocated.
In the unlikely case that this allocation fails, the handler sends
SIGSEGV to the task. That's not elegant, but unavoidable as the
other discussed options of preallocation or full per task
permissions come with their own set of horrors for kernel and/or
userspace. So this is the lesser of the evils and SIGSEGV caused by
unexpected memory allocation failures is not a fundamentally new
concept either.
When allocation succeeds, the fpstate properties are filled in to
reflect the extended feature set and the resulting sizes, the
fpu::fpstate pointer is updated accordingly and the trap is disarmed
for this task permanently.
4) Enumeration and size calculations
5) Trap switching via MSR_XFD
The XFD (eXtended Feature Disable) MSR is context switched with the
same life time rules as the FPU register state itself. The mechanism
is keyed off with a static key which is default disabled so !AMX
equipped CPUs have zero overhead. On AMX enabled CPUs the overhead
is limited by comparing the tasks XFD value with a per CPU shadow
variable to avoid redundant MSR writes. In case of switching from a
AMX using task to a non AMX using task or vice versa, the extra MSR
write is obviously inevitable.
All other places which need to be aware of the variable feature sets
and resulting variable sizes are not affected at all because they
retrieve the information (feature set, sizes) unconditonally from
the fpstate properties.
6) Enable the new AMX states
Note, this is relatively new code despite the fact that AMX support is in
the works for more than a year now.
The big refactoring of the FPU code, which allowed to do a proper
integration has been started exactly 3 weeks ago. Refactoring of the
existing FPU code and of the original AMX patches took a week and has
been subject to extensive review and testing. The only fallout which has
not been caught in review and testing right away was restricted to AMX
enabled systems, which is completely irrelevant for anyone outside Intel
and their early access program. There might be dragons lurking as usual,
but so far the fine grained refactoring has held up and eventual yet
undetected fallout is bisectable and should be easily addressable before
the 5.16 release. Famous last words...
Many thanks to Chang Bae and Dave Hansen for working hard on this and
also to the various test teams at Intel who reserved extra capacity to
follow the rapid development of this closely which provides the
confidence level required to offer this rather large update for inclusion
into 5.16-rc1.
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Merge tag 'x86-fpu-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fpu updates from Thomas Gleixner:
- Cleanup of extable fixup handling to be more robust, which in turn
allows to make the FPU exception fixups more robust as well.
- Change the return code for signal frame related failures from
explicit error codes to a boolean fail/success as that's all what the
calling code evaluates.
- A large refactoring of the FPU code to prepare for adding AMX
support:
- Distangle the public header maze and remove especially the
misnomed kitchen sink internal.h which is despite it's name
included all over the place.
- Add a proper abstraction for the register buffer storage (struct
fpstate) which allows to dynamically size the buffer at runtime
by flipping the pointer to the buffer container from the default
container which is embedded in task_struct::tread::fpu to a
dynamically allocated container with a larger register buffer.
- Convert the code over to the new fpstate mechanism.
- Consolidate the KVM FPU handling by moving the FPU related code
into the FPU core which removes the number of exports and avoids
adding even more export when AMX has to be supported in KVM.
This also removes duplicated code which was of course
unnecessary different and incomplete in the KVM copy.
- Simplify the KVM FPU buffer handling by utilizing the new
fpstate container and just switching the buffer pointer from the
user space buffer to the KVM guest buffer when entering
vcpu_run() and flipping it back when leaving the function. This
cuts the memory requirements of a vCPU for FPU buffers in half
and avoids pointless memory copy operations.
This also solves the so far unresolved problem of adding AMX
support because the current FPU buffer handling of KVM inflicted
a circular dependency between adding AMX support to the core and
to KVM. With the new scheme of switching fpstate AMX support can
be added to the core code without affecting KVM.
- Replace various variables with proper data structures so the
extra information required for adding dynamically enabled FPU
features (AMX) can be added in one place
- Add AMX (Advanced Matrix eXtensions) support (finally):
AMX is a large XSTATE component which is going to be available with
Saphire Rapids XEON CPUs. The feature comes with an extra MSR
(MSR_XFD) which allows to trap the (first) use of an AMX related
instruction, which has two benefits:
1) It allows the kernel to control access to the feature
2) It allows the kernel to dynamically allocate the large register
state buffer instead of burdening every task with the the extra
8K or larger state storage.
It would have been great to gain this kind of control already with
AVX512.
The support comes with the following infrastructure components:
1) arch_prctl() to
- read the supported features (equivalent to XGETBV(0))
- read the permitted features for a task
- request permission for a dynamically enabled feature
Permission is granted per process, inherited on fork() and
cleared on exec(). The permission policy of the kernel is
restricted to sigaltstack size validation, but the syscall
obviously allows further restrictions via seccomp etc.
2) A stronger sigaltstack size validation for sys_sigaltstack(2)
which takes granted permissions and the potentially resulting
larger signal frame into account. This mechanism can also be used
to enforce factual sigaltstack validation independent of dynamic
features to help with finding potential victims of the 2K
sigaltstack size constant which is broken since AVX512 support
was added.
3) Exception handling for #NM traps to catch first use of a extended
feature via a new cause MSR. If the exception was caused by the
use of such a feature, the handler checks permission for that
feature. If permission has not been granted, the handler sends a
SIGILL like the #UD handler would do if the feature would have
been disabled in XCR0. If permission has been granted, then a new
fpstate which fits the larger buffer requirement is allocated.
In the unlikely case that this allocation fails, the handler
sends SIGSEGV to the task. That's not elegant, but unavoidable as
the other discussed options of preallocation or full per task
permissions come with their own set of horrors for kernel and/or
userspace. So this is the lesser of the evils and SIGSEGV caused
by unexpected memory allocation failures is not a fundamentally
new concept either.
When allocation succeeds, the fpstate properties are filled in to
reflect the extended feature set and the resulting sizes, the
fpu::fpstate pointer is updated accordingly and the trap is
disarmed for this task permanently.
4) Enumeration and size calculations
5) Trap switching via MSR_XFD
The XFD (eXtended Feature Disable) MSR is context switched with
the same life time rules as the FPU register state itself. The
mechanism is keyed off with a static key which is default
disabled so !AMX equipped CPUs have zero overhead. On AMX enabled
CPUs the overhead is limited by comparing the tasks XFD value
with a per CPU shadow variable to avoid redundant MSR writes. In
case of switching from a AMX using task to a non AMX using task
or vice versa, the extra MSR write is obviously inevitable.
All other places which need to be aware of the variable feature
sets and resulting variable sizes are not affected at all because
they retrieve the information (feature set, sizes) unconditonally
from the fpstate properties.
6) Enable the new AMX states
Note, this is relatively new code despite the fact that AMX support
is in the works for more than a year now.
The big refactoring of the FPU code, which allowed to do a proper
integration has been started exactly 3 weeks ago. Refactoring of the
existing FPU code and of the original AMX patches took a week and has
been subject to extensive review and testing. The only fallout which
has not been caught in review and testing right away was restricted
to AMX enabled systems, which is completely irrelevant for anyone
outside Intel and their early access program. There might be dragons
lurking as usual, but so far the fine grained refactoring has held up
and eventual yet undetected fallout is bisectable and should be
easily addressable before the 5.16 release. Famous last words...
Many thanks to Chang Bae and Dave Hansen for working hard on this and
also to the various test teams at Intel who reserved extra capacity
to follow the rapid development of this closely which provides the
confidence level required to offer this rather large update for
inclusion into 5.16-rc1
* tag 'x86-fpu-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (110 commits)
Documentation/x86: Add documentation for using dynamic XSTATE features
x86/fpu: Include vmalloc.h for vzalloc()
selftests/x86/amx: Add context switch test
selftests/x86/amx: Add test cases for AMX state management
x86/fpu/amx: Enable the AMX feature in 64-bit mode
x86/fpu: Add XFD handling for dynamic states
x86/fpu: Calculate the default sizes independently
x86/fpu/amx: Define AMX state components and have it used for boot-time checks
x86/fpu/xstate: Prepare XSAVE feature table for gaps in state component numbers
x86/fpu/xstate: Add fpstate_realloc()/free()
x86/fpu/xstate: Add XFD #NM handler
x86/fpu: Update XFD state where required
x86/fpu: Add sanity checks for XFD
x86/fpu: Add XFD state to fpstate
x86/msr-index: Add MSRs for XFD
x86/cpufeatures: Add eXtended Feature Disabling (XFD) feature bit
x86/fpu: Reset permission and fpstate on exec()
x86/fpu: Prepare fpu_clone() for dynamically enabled features
x86/fpu/signal: Prepare for variable sigframe length
x86/signal: Use fpu::__state_user_size for sigalt stack validation
...
- Revert the printk format based wchan() symbol resolution as it can leak
the raw value in case that the symbol is not resolvable.
- Make wchan() more robust and work with all kind of unwinders by
enforcing that the task stays blocked while unwinding is in progress.
- Prevent sched_fork() from accessing an invalid sched_task_group
- Improve asymmetric packing logic
- Extend scheduler statistics to RT and DL scheduling classes and add
statistics for bandwith burst to the SCHED_FAIR class.
- Properly account SCHED_IDLE entities
- Prevent a potential deadlock when initial priority is assigned to a
newly created kthread. A recent change to plug a race between cpuset and
__sched_setscheduler() introduced a new lock dependency which is now
triggered. Break the lock dependency chain by moving the priority
assignment to the thread function.
- Fix the idle time reporting in /proc/uptime for NOHZ enabled systems.
- Improve idle balancing in general and especially for NOHZ enabled
systems.
- Provide proper interfaces for live patching so it does not have to
fiddle with scheduler internals.
- Add cluster aware scheduling support.
- A small set of tweaks for RT (irqwork, wait_task_inactive(), various
scheduler options and delaying mmdrop)
- The usual small tweaks and improvements all over the place
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Merge tag 'sched-core-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Thomas Gleixner:
- Revert the printk format based wchan() symbol resolution as it can
leak the raw value in case that the symbol is not resolvable.
- Make wchan() more robust and work with all kind of unwinders by
enforcing that the task stays blocked while unwinding is in progress.
- Prevent sched_fork() from accessing an invalid sched_task_group
- Improve asymmetric packing logic
- Extend scheduler statistics to RT and DL scheduling classes and add
statistics for bandwith burst to the SCHED_FAIR class.
- Properly account SCHED_IDLE entities
- Prevent a potential deadlock when initial priority is assigned to a
newly created kthread. A recent change to plug a race between cpuset
and __sched_setscheduler() introduced a new lock dependency which is
now triggered. Break the lock dependency chain by moving the priority
assignment to the thread function.
- Fix the idle time reporting in /proc/uptime for NOHZ enabled systems.
- Improve idle balancing in general and especially for NOHZ enabled
systems.
- Provide proper interfaces for live patching so it does not have to
fiddle with scheduler internals.
- Add cluster aware scheduling support.
- A small set of tweaks for RT (irqwork, wait_task_inactive(), various
scheduler options and delaying mmdrop)
- The usual small tweaks and improvements all over the place
* tag 'sched-core-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (69 commits)
sched/fair: Cleanup newidle_balance
sched/fair: Remove sysctl_sched_migration_cost condition
sched/fair: Wait before decaying max_newidle_lb_cost
sched/fair: Skip update_blocked_averages if we are defering load balance
sched/fair: Account update_blocked_averages in newidle_balance cost
x86: Fix __get_wchan() for !STACKTRACE
sched,x86: Fix L2 cache mask
sched/core: Remove rq_relock()
sched: Improve wake_up_all_idle_cpus() take #2
irq_work: Also rcuwait for !IRQ_WORK_HARD_IRQ on PREEMPT_RT
irq_work: Handle some irq_work in a per-CPU thread on PREEMPT_RT
irq_work: Allow irq_work_sync() to sleep if irq_work() no IRQ support.
sched/rt: Annotate the RT balancing logic irqwork as IRQ_WORK_HARD_IRQ
sched: Add cluster scheduler level for x86
sched: Add cluster scheduler level in core and related Kconfig for ARM64
topology: Represent clusters of CPUs within a die
sched: Disable -Wunused-but-set-variable
sched: Add wrapper for get_wchan() to keep task blocked
x86: Fix get_wchan() to support the ORC unwinder
proc: Use task_is_running() for wchan in /proc/$pid/stat
...
- Move futex code into kernel/futex/ and split up the kitchen sink into
seperate files to make integration of sys_futex_waitv() simpler.
- Add a new sys_futex_waitv() syscall which allows to wait on multiple
futexes. The main use case is emulating Windows' WaitForMultipleObjects
which allows Wine to improve the performance of Windows Games. Also
native Linux games can benefit from this interface as this is a common
wait pattern for this kind of applications.
- Add context to ww_mutex_trylock() to provide a path for i915 to rework
their eviction code step by step without making lockdep upset until the
final steps of rework are completed. It's also useful for regulator and
TTM to avoid dropping locks in the non contended path.
- Lockdep and might_sleep() cleanups and improvements
- A few improvements for the RT substitutions.
- The usual small improvements and cleanups.
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Merge tag 'locking-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Thomas Gleixner:
- Move futex code into kernel/futex/ and split up the kitchen sink into
seperate files to make integration of sys_futex_waitv() simpler.
- Add a new sys_futex_waitv() syscall which allows to wait on multiple
futexes.
The main use case is emulating Windows' WaitForMultipleObjects which
allows Wine to improve the performance of Windows Games. Also native
Linux games can benefit from this interface as this is a common wait
pattern for this kind of applications.
- Add context to ww_mutex_trylock() to provide a path for i915 to
rework their eviction code step by step without making lockdep upset
until the final steps of rework are completed. It's also useful for
regulator and TTM to avoid dropping locks in the non contended path.
- Lockdep and might_sleep() cleanups and improvements
- A few improvements for the RT substitutions.
- The usual small improvements and cleanups.
* tag 'locking-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
locking: Remove spin_lock_flags() etc
locking/rwsem: Fix comments about reader optimistic lock stealing conditions
locking: Remove rcu_read_{,un}lock() for preempt_{dis,en}able()
locking/rwsem: Disable preemption for spinning region
docs: futex: Fix kernel-doc references
futex: Fix PREEMPT_RT build
futex2: Documentation: Document sys_futex_waitv() uAPI
selftests: futex: Test sys_futex_waitv() wouldblock
selftests: futex: Test sys_futex_waitv() timeout
selftests: futex: Add sys_futex_waitv() test
futex,arm: Wire up sys_futex_waitv()
futex,x86: Wire up sys_futex_waitv()
futex: Implement sys_futex_waitv()
futex: Simplify double_lock_hb()
futex: Split out wait/wake
futex: Split out requeue
futex: Rename mark_wake_futex()
futex: Rename: match_futex()
futex: Rename: hb_waiter_{inc,dec,pending}()
futex: Split out PI futex
...
Core changes:
- Prevent a potential deadlock when initial priority is assigned to a
newly created interrupt thread. A recent change to plug a race between
cpuset and __sched_setscheduler() introduced a new lock dependency
which is now triggered. Break the lock dependency chain by moving the
priority assignment to the thread function.
- A couple of small updates to make the irq core RT safe.
- Confine the irq_cpu_online/offline() API to the only left unfixable
user Cavium Octeon so that it does not grow new usage.
- A small documentation update
Driver changes:
- A large cross architecture rework to move irq_enter/exit() into the
architecture code to make addressing the NOHZ_FULL/RCU issues simpler.
- The obligatory new irq chip driver for Microchip EIC
- Modularize a few irq chip drivers
- Expand usage of devm_*() helpers throughout the driver code
- The usual small fixes and improvements all over the place
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Merge tag 'irq-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"Updates for the interrupt subsystem:
Core changes:
- Prevent a potential deadlock when initial priority is assigned to a
newly created interrupt thread. A recent change to plug a race
between cpuset and __sched_setscheduler() introduced a new lock
dependency which is now triggered. Break the lock dependency chain
by moving the priority assignment to the thread function.
- A couple of small updates to make the irq core RT safe.
- Confine the irq_cpu_online/offline() API to the only left unfixable
user Cavium Octeon so that it does not grow new usage.
- A small documentation update
Driver changes:
- A large cross architecture rework to move irq_enter/exit() into the
architecture code to make addressing the NOHZ_FULL/RCU issues
simpler.
- The obligatory new irq chip driver for Microchip EIC
- Modularize a few irq chip drivers
- Expand usage of devm_*() helpers throughout the driver code
- The usual small fixes and improvements all over the place"
* tag 'irq-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits)
h8300: Fix linux/irqchip.h include mess
dt-bindings: irqchip: renesas-irqc: Document r8a774e1 bindings
MIPS: irq: Avoid an unused-variable error
genirq: Hide irq_cpu_{on,off}line() behind a deprecated option
irqchip/mips-gic: Get rid of the reliance on irq_cpu_online()
MIPS: loongson64: Drop call to irq_cpu_offline()
irq: remove handle_domain_{irq,nmi}()
irq: remove CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY
irq: riscv: perform irqentry in entry code
irq: openrisc: perform irqentry in entry code
irq: csky: perform irqentry in entry code
irq: arm64: perform irqentry in entry code
irq: arm: perform irqentry in entry code
irq: add a (temporary) CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY
irq: nds32: avoid CONFIG_HANDLE_DOMAIN_IRQ
irq: arc: avoid CONFIG_HANDLE_DOMAIN_IRQ
irq: add generic_handle_arch_irq()
irq: unexport handle_irq_desc()
irq: simplify handle_domain_{irq,nmi}()
irq: mips: simplify do_domain_IRQ()
...
- support multiple devices for multi-layer container images;
- support the secondary compression head;
- support readmore decompression strategy;
- support new LZMA algorithm (specifically called MicroLZMA);
- some bugfixes & cleanups.
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Merge tag 'erofs-for-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"There are some new features available for this cycle. Firstly, EROFS
LZMA algorithm support, specifically called MicroLZMA, is available as
an option for embedded devices, LiveCDs and/or as the secondary
auxiliary compression algorithm besides the primary algorithm in one
file.
In order to better support the LZMA fixed-sized output compression,
especially for 4KiB pcluster size (which has lowest memory pressure
thus useful for memory-sensitive scenarios), Lasse introduced a new
LZMA header/container format called MicroLZMA to minimize the original
LZMA1 header (for example, we don't need to waste 4-byte dictionary
size and another 8-byte uncompressed size, which can be calculated by
fs directly, for each pcluster) and enable EROFS fixed-sized output
compression.
Note that MicroLZMA can also be later used by other things in addition
to EROFS too where wasting minimal amount of space for headers is
important and it can be only compiled by enabling XZ_DEC_MICROLZMA.
MicroLZMA has been supported by the latest upstream XZ embedded [1] &
XZ utils [2], apply the latest related XZ embedded upstream patches by
the XZ author Lasse here.
Secondly, multiple device is also supported in this cycle, which is
designed for multi-layer container images. By working together with
inter-layer data deduplication and compression, we can achieve the
next high-performance container image solution. Our team will announce
the new Nydus container image service [3] implementation with new RAFS
v6 (EROFS-compatible) format in Open Source Summit 2021 China [4]
soon.
Besides, the secondary compression head support and readmore
decompression strategy are also included in this cycle. There are also
some minor bugfixes and cleanups, as always.
Summary:
- support multiple devices for multi-layer container images;
- support the secondary compression head;
- support readmore decompression strategy;
- support new LZMA algorithm (specifically called MicroLZMA);
- some bugfixes & cleanups"
* tag 'erofs-for-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: don't trigger WARN() when decompression fails
erofs: get rid of ->lru usage
erofs: lzma compression support
erofs: rename some generic methods in decompressor
lib/xz, lib/decompress_unxz.c: Fix spelling in comments
lib/xz: Add MicroLZMA decoder
lib/xz: Move s->lzma.len = 0 initialization to lzma_reset()
lib/xz: Validate the value before assigning it to an enum variable
lib/xz: Avoid overlapping memcpy() with invalid input with in-place decompression
erofs: introduce readmore decompression strategy
erofs: introduce the secondary compression head
erofs: get compression algorithms directly on mapping
erofs: add multiple device support
erofs: decouple basic mount options from fs_context
erofs: remove the fast path of per-CPU buffer decompression
Some cleanups for fs/crypto/:
- Allow 256-bit master keys with AES-256-XTS
- Improve documentation and comments
- Remove unneeded field fscrypt_operations::max_namelen
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Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt
Pull fscrypt updates from Eric Biggers:
"Some cleanups for fs/crypto/:
- Allow 256-bit master keys with AES-256-XTS
- Improve documentation and comments
- Remove unneeded field fscrypt_operations::max_namelen"
* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt:
fscrypt: improve a few comments
fscrypt: allow 256-bit master keys with AES-256-XTS
fscrypt: improve documentation for inline encryption
fscrypt: clean up comments in bio.c
fscrypt: remove fscrypt_operations::max_namelen
There is a typo in the speakup documentation. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Link: https://lore.kernel.org/r/20211028182319.613315-1-colin.i.king@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Merge tag 'for-5.16/cdrom-2021-10-29' of git://git.kernel.dk/linux-block
Pull CDROM updates from Jens Axboe:
"On behalf of Phillip, here are the CDROM updates for the 5.16-rc1
merge window:
- Add ioctl for improved media change detection (Lukas)
- Reformat some documentation (Phillip)
- Redundant variable removal (luo)"
* tag 'for-5.16/cdrom-2021-10-29' of git://git.kernel.dk/linux-block:
cdrom: Remove redundant variable and its assignment
cdrom: docs: reformat table in Documentation/userspace-api/ioctl/cdrom.rst
drivers/cdrom: improved ioctl for media change detection
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Merge tag 'for-5.16/scsi-ma-2021-10-29' of git://git.kernel.dk/linux-block
Pull SCSI multi-actuator support from Jens Axboe:
"This adds SCSI support for the recently merged block multi-actuator
support. Since this was sitting on top of the block tree, the SCSI
side asked me to queue it up."
* tag 'for-5.16/scsi-ma-2021-10-29' of git://git.kernel.dk/linux-block:
doc: Fix typo in request queue sysfs documentation
doc: document sysfs queue/independent_access_ranges attributes
libata: support concurrent positioning ranges log
scsi: sd: add concurrent positioning ranges support
Linus Torvalds
Krzysztof Kozlowski
Kunihiko Hayashi
Jens Renner
Stephen Boyd
Rafael J. Wysocki
Dmitry Osipenko
Jakub Kicinski
James Prestwood
Geert Uytterhoeven
Yuya Hamamachi
David Heidelberg
Kalesh Singh
J. Bruce Fields
Yanteng Si
Colin Ian King