Commit Graph

302 Commits

Author SHA1 Message Date
zhengyan
4f668f5682 BACKPORT: irqchip/gic-v3: Work around affinity issues on ASR8601
The ASR8601 SoC combines ARMv8.2 CPUs from ARM with a GIC-500,
also from ARM. However, the two are incompatible as the former
expose an affinity in the form of (cluster, core, thread),
while the latter can only deal with (cluster, core). If nothing
is done, the GIC simply cannot route interrupts to the CPUs.

Implement a workaround that shifts the affinity down by a level,
ensuring the delivery of interrupts despite the implementation
mismatch.

Signed-off-by: zhengyan <zhengyan@asrmicro.com>
[maz: rewrote commit message, reimplemented the workaround
 in a manageable way]
Signed-off-by: Marc Zyngier <maz@kernel.org>

Bug: 282025214
Change-Id: Id62a4f45ec52c1de543bbd712879dc34688d7904
(cherry picked from commit b4d81fab1ed0b302c71a869e5b93d81dfbfd3175)
[meitao: Resolved minor conflict in drivers/irqchip/irq-gic-v3.c ]
Signed-off-by: meitaogao <meitaogao@asrmicro.com>
(cherry picked from commit f17cd56e4e4273eef892e424adb030ec8e96b095)
2024-01-26 10:14:07 +00:00
Greg Kroah-Hartman
2e4a779114 Revert "arm64: errata: Add Cortex-A520 speculative unprivileged load workaround"
This reverts commit 6e3ae2927b which is
commit 471470bc7052d28ce125901877dd10e4c048e513 upstream.

This change breaks the Android ABI, if it is needed in the future, it
can be brought back in an abi-safe way.

Change-Id: I1f79c77da78e5a0edde2bdebb862e4c9855175a0
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-11-02 07:06:04 +00:00
Greg Kroah-Hartman
c259cc9cb4 This is the 6.1.57 stable release
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Merge 6.1.57 into android14-6.1-lts

Changes in 6.1.57
	spi: zynqmp-gqspi: fix clock imbalance on probe failure
	ASoC: soc-utils: Export snd_soc_dai_is_dummy() symbol
	ASoC: tegra: Fix redundant PLLA and PLLA_OUT0 updates
	mptcp: rename timer related helper to less confusing names
	mptcp: fix dangling connection hang-up
	mptcp: annotate lockless accesses to sk->sk_err
	mptcp: move __mptcp_error_report in protocol.c
	mptcp: process pending subflow error on close
	ata,scsi: do not issue START STOP UNIT on resume
	scsi: sd: Differentiate system and runtime start/stop management
	scsi: sd: Do not issue commands to suspended disks on shutdown
	scsi: core: Improve type safety of scsi_rescan_device()
	scsi: Do not attempt to rescan suspended devices
	ata: libata-scsi: Fix delayed scsi_rescan_device() execution
	NFS: Cleanup unused rpc_clnt variable
	NFS: rename nfs_client_kset to nfs_kset
	NFSv4: Fix a state manager thread deadlock regression
	mm/memory: add vm_normal_folio()
	mm/mempolicy: convert queue_pages_pmd() to queue_folios_pmd()
	mm/mempolicy: convert queue_pages_pte_range() to queue_folios_pte_range()
	mm/mempolicy: convert migrate_page_add() to migrate_folio_add()
	mm: mempolicy: keep VMA walk if both MPOL_MF_STRICT and MPOL_MF_MOVE are specified
	mm/page_alloc: always remove pages from temporary list
	mm/page_alloc: leave IRQs enabled for per-cpu page allocations
	mm: page_alloc: fix CMA and HIGHATOMIC landing on the wrong buddy list
	ring-buffer: remove obsolete comment for free_buffer_page()
	ring-buffer: Fix bytes info in per_cpu buffer stats
	btrfs: use struct qstr instead of name and namelen pairs
	btrfs: setup qstr from dentrys using fscrypt helper
	btrfs: use struct fscrypt_str instead of struct qstr
	Revert "NFSv4: Retry LOCK on OLD_STATEID during delegation return"
	arm64: Avoid repeated AA64MMFR1_EL1 register read on pagefault path
	net: add sysctl accept_ra_min_rtr_lft
	net: change accept_ra_min_rtr_lft to affect all RA lifetimes
	net: release reference to inet6_dev pointer
	arm64: cpufeature: Fix CLRBHB and BC detection
	drm/amd/display: Adjust the MST resume flow
	iommu/arm-smmu-v3: Set TTL invalidation hint better
	iommu/arm-smmu-v3: Avoid constructing invalid range commands
	rbd: move rbd_dev_refresh() definition
	rbd: decouple header read-in from updating rbd_dev->header
	rbd: decouple parent info read-in from updating rbd_dev
	rbd: take header_rwsem in rbd_dev_refresh() only when updating
	block: fix use-after-free of q->q_usage_counter
	hwmon: (nzxt-smart2) Add device id
	hwmon: (nzxt-smart2) add another USB ID
	i40e: fix the wrong PTP frequency calculation
	scsi: zfcp: Fix a double put in zfcp_port_enqueue()
	iommu/vt-d: Avoid memory allocation in iommu_suspend()
	vringh: don't use vringh_kiov_advance() in vringh_iov_xfer()
	net: ethernet: mediatek: disable irq before schedule napi
	mptcp: userspace pm allow creating id 0 subflow
	qed/red_ll2: Fix undefined behavior bug in struct qed_ll2_info
	Bluetooth: hci_codec: Fix leaking content of local_codecs
	Bluetooth: hci_sync: Fix handling of HCI_QUIRK_STRICT_DUPLICATE_FILTER
	wifi: mwifiex: Fix tlv_buf_left calculation
	md/raid5: release batch_last before waiting for another stripe_head
	PCI: qcom: Fix IPQ8074 enumeration
	net: replace calls to sock->ops->connect() with kernel_connect()
	net: prevent rewrite of msg_name in sock_sendmsg()
	drm/amd: Fix detection of _PR3 on the PCIe root port
	drm/amd: Fix logic error in sienna_cichlid_update_pcie_parameters()
	arm64: Add Cortex-A520 CPU part definition
	arm64: errata: Add Cortex-A520 speculative unprivileged load workaround
	HID: sony: Fix a potential memory leak in sony_probe()
	ubi: Refuse attaching if mtd's erasesize is 0
	erofs: fix memory leak of LZMA global compressed deduplication
	wifi: iwlwifi: dbg_ini: fix structure packing
	wifi: iwlwifi: mvm: Fix a memory corruption issue
	wifi: cfg80211: hold wiphy lock in auto-disconnect
	wifi: cfg80211: move wowlan disable under locks
	wifi: cfg80211: add a work abstraction with special semantics
	wifi: cfg80211: fix cqm_config access race
	wifi: cfg80211: add missing kernel-doc for cqm_rssi_work
	wifi: mwifiex: Fix oob check condition in mwifiex_process_rx_packet
	leds: Drop BUG_ON check for LED_COLOR_ID_MULTI
	bpf: Fix tr dereferencing
	regulator: mt6358: Drop *_SSHUB regulators
	regulator: mt6358: Use linear voltage helpers for single range regulators
	regulator: mt6358: split ops for buck and linear range LDO regulators
	Bluetooth: Delete unused hci_req_prepare_suspend() declaration
	Bluetooth: ISO: Fix handling of listen for unicast
	drivers/net: process the result of hdlc_open() and add call of hdlc_close() in uhdlc_close()
	wifi: mt76: mt76x02: fix MT76x0 external LNA gain handling
	perf/x86/amd/core: Fix overflow reset on hotplug
	regmap: rbtree: Fix wrong register marked as in-cache when creating new node
	wifi: mac80211: fix potential key use-after-free
	perf/x86/amd: Do not WARN() on every IRQ
	iommu/mediatek: Fix share pgtable for iova over 4GB
	regulator/core: regulator_register: set device->class earlier
	ima: Finish deprecation of IMA_TRUSTED_KEYRING Kconfig
	scsi: target: core: Fix deadlock due to recursive locking
	ima: rework CONFIG_IMA dependency block
	NFSv4: Fix a nfs4_state_manager() race
	bpf: tcp_read_skb needs to pop skb regardless of seq
	bpf, sockmap: Do not inc copied_seq when PEEK flag set
	bpf, sockmap: Reject sk_msg egress redirects to non-TCP sockets
	modpost: add missing else to the "of" check
	net: fix possible store tearing in neigh_periodic_work()
	bpf: Add BPF_FIB_LOOKUP_SKIP_NEIGH for bpf_fib_lookup
	neighbour: annotate lockless accesses to n->nud_state
	neighbour: switch to standard rcu, instead of rcu_bh
	neighbour: fix data-races around n->output
	ipv4, ipv6: Fix handling of transhdrlen in __ip{,6}_append_data()
	ptp: ocp: Fix error handling in ptp_ocp_device_init
	net: dsa: mv88e6xxx: Avoid EEPROM timeout when EEPROM is absent
	ipv6: tcp: add a missing nf_reset_ct() in 3WHS handling
	net: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg
	net: nfc: llcp: Add lock when modifying device list
	net: ethernet: ti: am65-cpsw: Fix error code in am65_cpsw_nuss_init_tx_chns()
	ibmveth: Remove condition to recompute TCP header checksum.
	netfilter: handle the connecting collision properly in nf_conntrack_proto_sctp
	selftests: netfilter: Test nf_tables audit logging
	selftests: netfilter: Extend nft_audit.sh
	netfilter: nf_tables: Deduplicate nft_register_obj audit logs
	netfilter: nf_tables: nft_set_rbtree: fix spurious insertion failure
	ipv4: Set offload_failed flag in fibmatch results
	net: stmmac: dwmac-stm32: fix resume on STM32 MCU
	tipc: fix a potential deadlock on &tx->lock
	tcp: fix quick-ack counting to count actual ACKs of new data
	tcp: fix delayed ACKs for MSS boundary condition
	sctp: update transport state when processing a dupcook packet
	sctp: update hb timer immediately after users change hb_interval
	netlink: split up copies in the ack construction
	netlink: Fix potential skb memleak in netlink_ack
	netlink: annotate data-races around sk->sk_err
	HID: sony: remove duplicate NULL check before calling usb_free_urb()
	HID: intel-ish-hid: ipc: Disable and reenable ACPI GPE bit
	intel_idle: add Emerald Rapids Xeon support
	smb: use kernel_connect() and kernel_bind()
	parisc: Fix crash with nr_cpus=1 option
	dm zoned: free dmz->ddev array in dmz_put_zoned_devices
	RDMA/core: Require admin capabilities to set system parameters
	of: dynamic: Fix potential memory leak in of_changeset_action()
	IB/mlx4: Fix the size of a buffer in add_port_entries()
	gpio: aspeed: fix the GPIO number passed to pinctrl_gpio_set_config()
	gpio: pxa: disable pinctrl calls for MMP_GPIO
	RDMA/cma: Initialize ib_sa_multicast structure to 0 when join
	RDMA/cma: Fix truncation compilation warning in make_cma_ports
	RDMA/uverbs: Fix typo of sizeof argument
	RDMA/srp: Do not call scsi_done() from srp_abort()
	RDMA/siw: Fix connection failure handling
	RDMA/mlx5: Fix mutex unlocking on error flow for steering anchor creation
	RDMA/mlx5: Fix NULL string error
	x86/sev: Use the GHCB protocol when available for SNP CPUID requests
	ksmbd: fix race condition between session lookup and expire
	ksmbd: fix uaf in smb20_oplock_break_ack
	parisc: Restore __ldcw_align for PA-RISC 2.0 processors
	ipv6: remove nexthop_fib6_nh_bh()
	vrf: Fix lockdep splat in output path
	btrfs: fix an error handling path in btrfs_rename()
	btrfs: fix fscrypt name leak after failure to join log transaction
	netlink: remove the flex array from struct nlmsghdr
	btrfs: file_remove_privs needs an exclusive lock in direct io write
	ipv6: remove one read_lock()/read_unlock() pair in rt6_check_neigh()
	xen/events: replace evtchn_rwlock with RCU
	Linux 6.1.57

Change-Id: I2c200264df72a9043d91d31479c91b0d7f94863e
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-11-02 07:05:54 +00:00
Greg Kroah-Hartman
1c5ec1e54d Merge 6.1.55 into android14-6.1-lts
Changes in 6.1.55
	autofs: fix memory leak of waitqueues in autofs_catatonic_mode
	btrfs: output extra debug info if we failed to find an inline backref
	locks: fix KASAN: use-after-free in trace_event_raw_event_filelock_lock
	ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer
	kernel/fork: beware of __put_task_struct() calling context
	rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
	scftorture: Forgive memory-allocation failure if KASAN
	ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470
	perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09
	perf/imx_ddr: speed up overflow frequency of cycle
	hw_breakpoint: fix single-stepping when using bpf_overflow_handler
	ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects
	selftests/nolibc: fix up kernel parameters support
	devlink: remove reload failed checks in params get/set callbacks
	crypto: lrw,xts - Replace strlcpy with strscpy
	ice: Don't tx before switchdev is fully configured
	wifi: ath9k: fix fortify warnings
	wifi: ath9k: fix printk specifier
	wifi: mwifiex: fix fortify warning
	mt76: mt7921: don't assume adequate headroom for SDIO headers
	wifi: wil6210: fix fortify warnings
	can: sun4i_can: Add acceptance register quirk
	can: sun4i_can: Add support for the Allwinner D1
	net: Use sockaddr_storage for getsockopt(SO_PEERNAME).
	net/ipv4: return the real errno instead of -EINVAL
	crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()
	Bluetooth: Fix hci_suspend_sync crash
	netlink: convert nlk->flags to atomic flags
	tpm_tis: Resend command to recover from data transfer errors
	mmc: sdhci-esdhc-imx: improve ESDHC_FLAG_ERR010450
	alx: fix OOB-read compiler warning
	wifi: mac80211: check S1G action frame size
	netfilter: ebtables: fix fortify warnings in size_entry_mwt()
	wifi: cfg80211: reject auth/assoc to AP with our address
	wifi: cfg80211: ocb: don't leave if not joined
	wifi: mac80211: check for station first in client probe
	wifi: mac80211_hwsim: drop short frames
	libbpf: Free btf_vmlinux when closing bpf_object
	drm/bridge: tc358762: Instruct DSI host to generate HSE packets
	drm/edid: Add quirk for OSVR HDK 2.0
	arm64: dts: qcom: sm6125-pdx201: correct ramoops pmsg-size
	arm64: dts: qcom: sm6350: correct ramoops pmsg-size
	arm64: dts: qcom: sm8150-kumano: correct ramoops pmsg-size
	arm64: dts: qcom: sm8250-edo: correct ramoops pmsg-size
	samples/hw_breakpoint: Fix kernel BUG 'invalid opcode: 0000'
	drm/amd/display: Fix underflow issue on 175hz timing
	ASoC: SOF: topology: simplify code to prevent static analysis warnings
	ASoC: Intel: sof_sdw: Update BT offload config for soundwire config
	ALSA: hda: intel-dsp-cfg: add LunarLake support
	drm/amd/display: Use DTBCLK as refclk instead of DPREFCLK
	drm/amd/display: Blocking invalid 420 modes on HDMI TMDS for DCN31
	drm/amd/display: Blocking invalid 420 modes on HDMI TMDS for DCN314
	drm/exynos: fix a possible null-pointer dereference due to data race in exynos_drm_crtc_atomic_disable()
	drm/mediatek: dp: Change logging to dev for mtk_dp_aux_transfer()
	bus: ti-sysc: Configure uart quirks for k3 SoC
	md: raid1: fix potential OOB in raid1_remove_disk()
	ext2: fix datatype of block number in ext2_xattr_set2()
	fs/jfs: prevent double-free in dbUnmount() after failed jfs_remount()
	jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount
	PCI: dwc: Provide deinit callback for i.MX
	ARM: 9317/1: kexec: Make smp stop calls asynchronous
	powerpc/pseries: fix possible memory leak in ibmebus_bus_init()
	PCI: vmd: Disable bridge window for domain reset
	PCI: fu740: Set the number of MSI vectors
	media: mdp3: Fix resource leaks in of_find_device_by_node
	media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer
	media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer()
	media: af9005: Fix null-ptr-deref in af9005_i2c_xfer
	media: anysee: fix null-ptr-deref in anysee_master_xfer
	media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()
	media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer
	scsi: lpfc: Abort outstanding ELS cmds when mailbox timeout error is detected
	media: tuners: qt1010: replace BUG_ON with a regular error
	media: pci: cx23885: replace BUG with error return
	usb: cdns3: Put the cdns set active part outside the spin lock
	usb: gadget: fsl_qe_udc: validate endpoint index for ch9 udc
	tools: iio: iio_generic_buffer: Fix some integer type and calculation
	scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()
	serial: cpm_uart: Avoid suspicious locking
	misc: open-dice: make OPEN_DICE depend on HAS_IOMEM
	usb: ehci: add workaround for chipidea PORTSC.PEC bug
	usb: chipidea: add workaround for chipidea PEC bug
	media: pci: ipu3-cio2: Initialise timing struct to avoid a compiler warning
	kobject: Add sanity check for kset->kobj.ktype in kset_register()
	interconnect: Fix locking for runpm vs reclaim
	printk: Keep non-panic-CPUs out of console lock
	printk: Consolidate console deferred printing
	dma-buf: Add unlocked variant of attachment-mapping functions
	misc: fastrpc: Prepare to dynamic dma-buf locking specification
	misc: fastrpc: Fix incorrect DMA mapping unmap request
	MIPS: Use "grep -E" instead of "egrep"
	btrfs: add a helper to read the superblock metadata_uuid
	btrfs: compare the correct fsid/metadata_uuid in btrfs_validate_super
	block: factor out a bvec_set_page helper
	nvmet: use bvec_set_page to initialize bvecs
	nvmet-tcp: pass iov_len instead of sg->length to bvec_set_page()
	drm: gm12u320: Fix the timeout usage for usb_bulk_msg()
	scsi: qla2xxx: Fix NULL vs IS_ERR() bug for debugfs_create_dir()
	selftests: tracing: Fix to unmount tracefs for recovering environment
	x86/ibt: Suppress spurious ENDBR
	riscv: kexec: Align the kexeced kernel entry
	scsi: target: core: Fix target_cmd_counter leak
	scsi: lpfc: Fix the NULL vs IS_ERR() bug for debugfs_create_file()
	panic: Reenable preemption in WARN slowpath
	x86/boot/compressed: Reserve more memory for page tables
	x86/purgatory: Remove LTO flags
	samples/hw_breakpoint: fix building without module unloading
	md/raid1: fix error: ISO C90 forbids mixed declarations
	Revert "SUNRPC: Fail faster on bad verifier"
	attr: block mode changes of symlinks
	ovl: fix failed copyup of fileattr on a symlink
	ovl: fix incorrect fdput() on aio completion
	io_uring/net: fix iter retargeting for selected buf
	nvme: avoid bogus CRTO values
	md: Put the right device in md_seq_next
	Revert "drm/amd: Disable S/G for APUs when 64GB or more host memory"
	dm: don't attempt to queue IO under RCU protection
	btrfs: fix lockdep splat and potential deadlock after failure running delayed items
	btrfs: fix a compilation error if DEBUG is defined in btree_dirty_folio
	btrfs: release path before inode lookup during the ino lookup ioctl
	btrfs: check for BTRFS_FS_ERROR in pending ordered assert
	tracing: Have tracing_max_latency inc the trace array ref count
	tracing: Have event inject files inc the trace array ref count
	tracing: Increase trace array ref count on enable and filter files
	tracing: Have current_trace inc the trace array ref count
	tracing: Have option files inc the trace array ref count
	selinux: fix handling of empty opts in selinux_fs_context_submount()
	nfsd: fix change_info in NFSv4 RENAME replies
	tracefs: Add missing lockdown check to tracefs_create_dir()
	i2c: aspeed: Reset the i2c controller when timeout occurs
	ata: libata: disallow dev-initiated LPM transitions to unsupported states
	ata: libahci: clear pending interrupt status
	scsi: megaraid_sas: Fix deadlock on firmware crashdump
	scsi: pm8001: Setup IRQs on resume
	ext4: fix rec_len verify error
	drm/amd/display: fix the white screen issue when >= 64GB DRAM
	Revert "memcg: drop kmem.limit_in_bytes"
	drm/amdgpu: fix amdgpu_cs_p1_user_fence
	net/sched: Retire rsvp classifier
	interconnect: Teach lockdep about icc_bw_lock order
	Linux 6.1.55

Change-Id: I95193a57879a13b04b5ac8647a24e6d8304fcb0e
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-10-26 18:58:32 +00:00
Rob Herring
6e3ae2927b arm64: errata: Add Cortex-A520 speculative unprivileged load workaround
commit 471470bc7052d28ce125901877dd10e4c048e513 upstream.

Implement the workaround for ARM Cortex-A520 erratum 2966298. On an
affected Cortex-A520 core, a speculatively executed unprivileged load
might leak data from a privileged load via a cache side channel. The
issue only exists for loads within a translation regime with the same
translation (e.g. same ASID and VMID). Therefore, the issue only affects
the return to EL0.

The workaround is to execute a TLBI before returning to EL0 after all
loads of privileged data. A non-shareable TLBI to any address is
sufficient.

The workaround isn't necessary if page table isolation (KPTI) is
enabled, but for simplicity it will be. Page table isolation should
normally be disabled for Cortex-A520 as it supports the CSV3 feature
and the E0PD feature (used when KASLR is enabled).

Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230921194156.1050055-2-robh@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-10 22:00:39 +02:00
Yicong Yang
9d9b5cbc12 perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09
[ Upstream commit 0242737dc4eb9f6e9a5ea594b3f93efa0b12f28d ]

Some HiSilicon SMMU PMCG suffers the erratum 162001900 that the PMU
disable control sometimes fail to disable the counters. This will lead
to error or inaccurate data since before we enable the counters the
counter's still counting for the event used in last perf session.

This patch tries to fix this by hardening the global disable process.
Before disable the PMU, writing an invalid event type (0xffff) to
focibly stop the counters. Correspondingly restore each events on
pmu::pmu_enable().

Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20230814124012.58013-1-yangyicong@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-09-23 11:11:00 +02:00
Greg Kroah-Hartman
706ba4ef8d Merge 6.1.45 into android14-6.1-lts
Changes in 6.1.45
	io_uring: gate iowait schedule on having pending requests
	perf: Fix function pointer case
	net/mlx5: Free irqs only on shutdown callback
	net: ipa: only reset hashed tables when supported
	iommu/arm-smmu-v3: Work around MMU-600 erratum 1076982
	iommu/arm-smmu-v3: Document MMU-700 erratum 2812531
	iommu/arm-smmu-v3: Add explicit feature for nesting
	iommu/arm-smmu-v3: Document nesting-related errata
	arm64: dts: imx8mm-venice-gw7903: disable disp_blk_ctrl
	arm64: dts: imx8mm-venice-gw7904: disable disp_blk_ctrl
	arm64: dts: phycore-imx8mm: Label typo-fix of VPU
	arm64: dts: phycore-imx8mm: Correction in gpio-line-names
	arm64: dts: imx8mn-var-som: add missing pull-up for onboard PHY reset pinmux
	arm64: dts: freescale: Fix VPU G2 clock
	firmware: smccc: Fix use of uninitialised results structure
	lib/bitmap: workaround const_eval test build failure
	firmware: arm_scmi: Fix chan_free cleanup on SMC
	word-at-a-time: use the same return type for has_zero regardless of endianness
	KVM: s390: fix sthyi error handling
	erofs: fix wrong primary bvec selection on deduplicated extents
	wifi: cfg80211: Fix return value in scan logic
	net/mlx5e: fix double free in macsec_fs_tx_create_crypto_table_groups
	net/mlx5: DR, fix memory leak in mlx5dr_cmd_create_reformat_ctx
	net/mlx5: fix potential memory leak in mlx5e_init_rep_rx
	net/mlx5e: fix return value check in mlx5e_ipsec_remove_trailer()
	net/mlx5e: Fix crash moving to switchdev mode when ntuple offload is set
	net/mlx5e: Move representor neigh cleanup to profile cleanup_tx
	bpf: Add length check for SK_DIAG_BPF_STORAGE_REQ_MAP_FD parsing
	rtnetlink: let rtnl_bridge_setlink checks IFLA_BRIDGE_MODE length
	net: dsa: fix value check in bcm_sf2_sw_probe()
	perf test uprobe_from_different_cu: Skip if there is no gcc
	net: sched: cls_u32: Fix match key mis-addressing
	mISDN: hfcpci: Fix potential deadlock on &hc->lock
	qed: Fix scheduling in a tasklet while getting stats
	net: annotate data-races around sk->sk_reserved_mem
	net: annotate data-race around sk->sk_txrehash
	net: annotate data-races around sk->sk_max_pacing_rate
	net: add missing READ_ONCE(sk->sk_rcvlowat) annotation
	net: add missing READ_ONCE(sk->sk_sndbuf) annotation
	net: add missing READ_ONCE(sk->sk_rcvbuf) annotation
	net: annotate data-races around sk->sk_mark
	net: add missing data-race annotations around sk->sk_peek_off
	net: add missing data-race annotation for sk_ll_usec
	net: annotate data-races around sk->sk_priority
	net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX.
	ice: Fix RDMA VSI removal during queue rebuild
	bpf, cpumap: Handle skb as well when clean up ptr_ring
	net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after-free
	net/sched: cls_fw: No longer copy tcf_result on update to avoid use-after-free
	net/sched: cls_route: No longer copy tcf_result on update to avoid use-after-free
	bpf: sockmap: Remove preempt_disable in sock_map_sk_acquire
	net: ll_temac: fix error checking of irq_of_parse_and_map()
	net: korina: handle clk prepare error in korina_probe()
	net: netsec: Ignore 'phy-mode' on SynQuacer in DT mode
	bnxt_en: Fix page pool logic for page size >= 64K
	bnxt_en: Fix max_mtu setting for multi-buf XDP
	net: dcb: choose correct policy to parse DCB_ATTR_BCN
	s390/qeth: Don't call dev_close/dev_open (DOWN/UP)
	ip6mr: Fix skb_under_panic in ip6mr_cache_report()
	vxlan: Fix nexthop hash size
	net/mlx5: fs_core: Make find_closest_ft more generic
	net/mlx5: fs_core: Skip the FTs in the same FS_TYPE_PRIO_CHAINS fs_prio
	prestera: fix fallback to previous version on same major version
	tcp_metrics: fix addr_same() helper
	tcp_metrics: annotate data-races around tm->tcpm_stamp
	tcp_metrics: annotate data-races around tm->tcpm_lock
	tcp_metrics: annotate data-races around tm->tcpm_vals[]
	tcp_metrics: annotate data-races around tm->tcpm_net
	tcp_metrics: fix data-race in tcpm_suck_dst() vs fastopen
	rust: allocator: Prevent mis-aligned allocation
	scsi: zfcp: Defer fc_rport blocking until after ADISC response
	scsi: storvsc: Limit max_sectors for virtual Fibre Channel devices
	libceph: fix potential hang in ceph_osdc_notify()
	USB: zaurus: Add ID for A-300/B-500/C-700
	ceph: defer stopping mdsc delayed_work
	firmware: arm_scmi: Drop OF node reference in the transport channel setup
	exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree
	exfat: release s_lock before calling dir_emit()
	mtd: spinand: toshiba: Fix ecc_get_status
	mtd: rawnand: meson: fix OOB available bytes for ECC
	bpf: Disable preemption in bpf_perf_event_output
	arm64: dts: stratix10: fix incorrect I2C property for SCL signal
	net: tun_chr_open(): set sk_uid from current_fsuid()
	net: tap_open(): set sk_uid from current_fsuid()
	wifi: mt76: mt7615: do not advertise 5 GHz on first phy of MT7615D (DBDC)
	x86/hyperv: Disable IBT when hypercall page lacks ENDBR instruction
	rbd: prevent busy loop when requesting exclusive lock
	bpf: Disable preemption in bpf_event_output
	powerpc/ftrace: Create a dummy stackframe to fix stack unwind
	arm64/fpsimd: Sync and zero pad FPSIMD state for streaming SVE
	arm64/fpsimd: Clear SME state in the target task when setting the VL
	arm64/fpsimd: Sync FPSIMD state with SVE for SME only systems
	open: make RESOLVE_CACHED correctly test for O_TMPFILE
	drm/ttm: check null pointer before accessing when swapping
	drm/i915: Fix premature release of request's reusable memory
	drm/i915/gt: Cleanup aux invalidation registers
	clk: imx93: Propagate correct error in imx93_clocks_probe()
	bpf, cpumap: Make sure kthread is running before map update returns
	file: reinstate f_pos locking optimization for regular files
	mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()
	fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_load_attr_list()
	fs/sysv: Null check to prevent null-ptr-deref bug
	Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb
	debugobjects: Recheck debug_objects_enabled before reporting
	net: usbnet: Fix WARNING in usbnet_start_xmit/usb_submit_urb
	fs: Protect reconfiguration of sb read-write from racing writes
	ext2: Drop fragment support
	btrfs: remove BUG_ON()'s in add_new_free_space()
	f2fs: fix to do sanity check on direct node in truncate_dnode()
	io_uring: annotate offset timeout races
	mtd: rawnand: omap_elm: Fix incorrect type in assignment
	mtd: rawnand: rockchip: fix oobfree offset and description
	mtd: rawnand: rockchip: Align hwecc vs. raw page helper layouts
	mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op()
	powerpc/mm/altmap: Fix altmap boundary check
	drm/imx/ipuv3: Fix front porch adjustment upon hactive aligning
	drm/amd/display: Ensure that planes are in the same order
	drm/amd/display: skip CLEAR_PAYLOAD_ID_TABLE if device mst_en is 0
	selftests/rseq: Play nice with binaries statically linked against glibc 2.35+
	f2fs: fix to set flush_merge opt and show noflush_merge
	f2fs: don't reset unchangable mount option in f2fs_remount()
	exfat: check if filename entries exceeds max filename length
	arm64/ptrace: Don't enable SVE when setting streaming SVE
	drm/amdgpu: add vram reservation based on vram_usagebyfirmware_v2_2
	drm/amdgpu: Remove unnecessary domain argument
	drm/amdgpu: Use apt name for FW reserved region
	Revert "drm/i915: Disable DC states for all commits"
	x86/CPU/AMD: Do not leak quotient data after a division by 0
	Linux 6.1.45

Change-Id: Ic63af3f07f26c867c9fc361b2f7055dbc04143d2
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-09-13 19:32:45 +00:00
Greg Kroah-Hartman
e8ac95d4bc Revert "arm64: errata: Mitigate Ampere1 erratum AC03_CPU_38 at stage-2"
This reverts commit cde7f2fd63 which is
commit 6df696cd9bc1ceed0e92e36908f88bbd16d18255 upstream.

It breaks the Android abi and isn't really needed for Android systems.
If it is needed in the future, it can come back in an ABI-safe way.

Bug: 161946584
Change-Id: I5134a2ccd9bd11cb7fbf3e5c6d8a0f2b8ee924d3
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-09-12 14:37:43 +00:00
Greg Kroah-Hartman
7f81705800 Merge 6.1.43 into android14-6.1-lts
Changes in 6.1.43
	netfilter: nf_tables: fix underflow in object reference counter
	netfilter: nf_tables: fix underflow in chain reference counter
	platform/x86/amd/pmf: Notify OS power slider update
	platform/x86/amd/pmf: reduce verbosity of apmf_get_system_params
	drm/amd/display: Keep PHY active for dp config
	ovl: fix null pointer dereference in ovl_permission()
	drm/amd: Move helper for dynamic speed switch check out of smu13
	drm/amd: Align SMU11 SMU_MSG_OverridePcieParameters implementation with SMU13
	jbd2: Fix wrongly judgement for buffer head removing while doing checkpoint
	blk-mq: Fix stall due to recursive flush plug
	powerpc/pseries/vas: Hold mmap_mutex after mmap lock during window close
	KVM: s390: pv: fix index value of replaced ASCE
	io_uring: don't audit the capability check in io_uring_create()
	gpio: tps68470: Make tps68470_gpio_output() always set the initial value
	pwm: Add a stub for devm_pwmchip_add()
	gpio: mvebu: Make use of devm_pwmchip_add
	gpio: mvebu: fix irq domain leak
	btrfs: fix race between quota disable and relocation
	i2c: Delete error messages for failed memory allocations
	i2c: Improve size determinations
	i2c: nomadik: Remove unnecessary goto label
	i2c: nomadik: Use devm_clk_get_enabled()
	i2c: nomadik: Remove a useless call in the remove function
	MIPS: Loongson: Move arch cflags to MIPS top level Makefile
	MIPS: Loongson: Fix build error when make modules_install
	PCI/ASPM: Return 0 or -ETIMEDOUT from pcie_retrain_link()
	PCI/ASPM: Factor out pcie_wait_for_retrain()
	PCI/ASPM: Avoid link retraining race
	PCI: rockchip: Remove writes to unused registers
	PCI: rockchip: Fix window mapping and address translation for endpoint
	PCI: rockchip: Don't advertise MSI-X in PCIe capabilities
	drm/amd/display: add FB_DAMAGE_CLIPS support
	drm/amd/display: Check if link state is valid
	drm/amd/display: Rework context change check
	drm/amd/display: Enable new commit sequence only for DCN32x
	drm/amd/display: Copy DC context in the commit streams
	drm/amd/display: Include surface of unaffected streams
	drm/amd/display: Use min transition for all SubVP plane add/remove
	drm/amd/display: add ODM case when looking for first split pipe
	drm/amd/display: use low clocks for no plane configs
	drm/amd/display: fix unbounded requesting for high pixel rate modes on dcn315
	drm/amd/display: add pixel rate based CRB allocation support
	drm/amd/display: fix dcn315 single stream crb allocation
	drm/amd/display: Update correct DCN314 register header
	drm/amd/display: Set minimum requirement for using PSR-SU on Rembrandt
	drm/amd/display: Set minimum requirement for using PSR-SU on Phoenix
	drm/ttm: Don't print error message if eviction was interrupted
	drm/ttm: Don't leak a resource on eviction error
	n_tty: Rename tail to old_tail in n_tty_read()
	tty: fix hang on tty device with no_room set
	drm/ttm: never consider pinned BOs for eviction&swap
	KVM: arm64: Condition HW AF updates on config option
	arm64: errata: Mitigate Ampere1 erratum AC03_CPU_38 at stage-2
	mptcp: introduce 'sk' to replace 'sock->sk' in mptcp_listen()
	mptcp: do not rely on implicit state check in mptcp_listen()
	tracing/probes: Add symstr type for dynamic events
	tracing/probes: Fix to avoid double count of the string length on the array
	tracing: Allow synthetic events to pass around stacktraces
	Revert "tracing: Add "(fault)" name injection to kernel probes"
	tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails
	test_maple_tree: test modifications while iterating
	maple_tree: add __init and __exit to test module
	maple_tree: fix 32 bit mas_next testing
	drm/amd/display: Rework comments on dc file
	drm/amd/display: fix dc/core/dc.c kernel-doc
	drm/amd/display: Add FAMS validation before trying to use it
	drm/amd/display: update extended blank for dcn314 onwards
	drm/amd/display: Fix possible underflow for displays with large vblank
	drm/amd/display: Prevent vtotal from being set to 0
	phy: phy-mtk-dp: Fix an error code in probe()
	phy: qcom-snps: correct struct qcom_snps_hsphy kerneldoc
	phy: qcom-snps-femto-v2: keep cfg_ahb_clk enabled during runtime suspend
	phy: qcom-snps-femto-v2: properly enable ref clock
	soundwire: qcom: update status correctly with mask
	media: staging: atomisp: select V4L2_FWNODE
	media: amphion: Fix firmware path to match linux-firmware
	i40e: Fix an NULL vs IS_ERR() bug for debugfs_create_dir()
	iavf: fix potential deadlock on allocation failure
	iavf: check for removal state before IAVF_FLAG_PF_COMMS_FAILED
	net: phy: marvell10g: fix 88x3310 power up
	net: hns3: fix the imp capability bit cannot exceed 32 bits issue
	net: hns3: fix wrong tc bandwidth weight data issue
	net: hns3: fix wrong bw weight of disabled tc issue
	vxlan: calculate correct header length for GPE
	vxlan: generalize vxlan_parse_gpe_hdr and remove unused args
	vxlan: fix GRO with VXLAN-GPE
	phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe()
	atheros: fix return value check in atl1_tso()
	ethernet: atheros: fix return value check in atl1e_tso_csum()
	ipv6 addrconf: fix bug where deleting a mngtmpaddr can create a new temporary address
	tcp: Reduce chance of collisions in inet6_hashfn().
	ice: Fix memory management in ice_ethtool_fdir.c
	bonding: reset bond's flags when down link is P2P device
	team: reset team's flags when down link is P2P device
	octeontx2-af: Removed unnecessary debug messages.
	octeontx2-af: Fix hash extraction enable configuration
	net: stmmac: Apply redundant write work around on 4.xx too
	platform/x86: msi-laptop: Fix rfkill out-of-sync on MSI Wind U100
	x86/traps: Fix load_unaligned_zeropad() handling for shared TDX memory
	igc: Fix Kernel Panic during ndo_tx_timeout callback
	netfilter: nft_set_rbtree: fix overlap expiration walk
	netfilter: nf_tables: skip immediate deactivate in _PREPARE_ERROR
	netfilter: nf_tables: disallow rule addition to bound chain via NFTA_RULE_CHAIN_ID
	mm: suppress mm fault logging if fatal signal already pending
	net/sched: mqprio: refactor nlattr parsing to a separate function
	net/sched: mqprio: add extack to mqprio_parse_nlattr()
	net/sched: mqprio: Add length check for TCA_MQPRIO_{MAX/MIN}_RATE64
	benet: fix return value check in be_lancer_xmit_workarounds()
	tipc: check return value of pskb_trim()
	tipc: stop tipc crypto on failure in tipc_node_create
	RDMA/mlx4: Make check for invalid flags stricter
	drm/msm/dpu: drop enum dpu_core_perf_data_bus_id
	drm/msm/adreno: Fix snapshot BINDLESS_DATA size
	RDMA/irdma: Add missing read barriers
	RDMA/irdma: Fix data race on CQP completion stats
	RDMA/irdma: Fix data race on CQP request done
	RDMA/mthca: Fix crash when polling CQ for shared QPs
	RDMA/bnxt_re: Prevent handling any completions after qp destroy
	drm/msm: Fix IS_ERR_OR_NULL() vs NULL check in a5xx_submit_in_rb()
	cxl/acpi: Fix a use-after-free in cxl_parse_cfmws()
	cxl/acpi: Return 'rc' instead of '0' in cxl_parse_cfmws()
	ASoC: fsl_spdif: Silence output on stop
	block: Fix a source code comment in include/uapi/linux/blkzoned.h
	smb3: do not set NTLMSSP_VERSION flag for negotiate not auth request
	drm/i915: Fix an error handling path in igt_write_huge()
	xenbus: check xen_domain in xenbus_probe_initcall
	dm raid: fix missing reconfig_mutex unlock in raid_ctr() error paths
	dm raid: clean up four equivalent goto tags in raid_ctr()
	dm raid: protect md_stop() with 'reconfig_mutex'
	drm/amd: Fix an error handling mistake in psp_sw_init()
	drm/amd/display: Unlock on error path in dm_handle_mst_sideband_msg_ready_event()
	RDMA/irdma: Fix op_type reporting in CQEs
	RDMA/irdma: Report correct WC error
	drm/msm: Switch idr_lock to spinlock
	drm/msm: Disallow submit with fence id 0
	ublk_drv: move ublk_get_device_from_id into ublk_ctrl_uring_cmd
	ublk: fail to start device if queue setup is interrupted
	ublk: fail to recover device if queue setup is interrupted
	ata: pata_ns87415: mark ns87560_tf_read static
	ring-buffer: Fix wrong stat of cpu_buffer->read
	tracing: Fix warning in trace_buffered_event_disable()
	Revert "usb: gadget: tegra-xudc: Fix error check in tegra_xudc_powerdomain_init()"
	usb: gadget: call usb_gadget_check_config() to verify UDC capability
	USB: gadget: Fix the memory leak in raw_gadget driver
	usb: gadget: core: remove unbalanced mutex_unlock in usb_gadget_activate
	KVM: Grab a reference to KVM for VM and vCPU stats file descriptors
	KVM: VMX: Don't fudge CR0 and CR4 for restricted L2 guest
	KVM: x86: Disallow KVM_SET_SREGS{2} if incoming CR0 is invalid
	serial: qcom-geni: drop bogus runtime pm state update
	serial: 8250_dw: Preserve original value of DLF register
	serial: sifive: Fix sifive_serial_console_setup() section
	USB: serial: option: support Quectel EM060K_128
	USB: serial: option: add Quectel EC200A module support
	USB: serial: simple: add Kaufmann RKS+CAN VCP
	USB: serial: simple: sort driver entries
	can: gs_usb: gs_can_close(): add missing set of CAN state to CAN_STATE_STOPPED
	usb: typec: Set port->pd before adding device for typec_port
	usb: typec: Iterate pds array when showing the pd list
	usb: typec: Use sysfs_emit_at when concatenating the string
	Revert "usb: dwc3: core: Enable AutoRetry feature in the controller"
	usb: dwc3: pci: skip BYT GPIO lookup table for hardwired phy
	usb: dwc3: don't reset device side if dwc3 was configured as host-only
	usb: misc: ehset: fix wrong if condition
	usb: ohci-at91: Fix the unhandle interrupt when resume
	USB: quirks: add quirk for Focusrite Scarlett
	usb: cdns3: fix incorrect calculation of ep_buf_size when more than one config
	usb: xhci-mtk: set the dma max_seg_size
	Revert "usb: xhci: tegra: Fix error check"
	Documentation: security-bugs.rst: update preferences when dealing with the linux-distros group
	Documentation: security-bugs.rst: clarify CVE handling
	staging: r8712: Fix memory leak in _r8712_init_xmit_priv()
	staging: ks7010: potential buffer overflow in ks_wlan_set_encode_ext()
	tty: n_gsm: fix UAF in gsm_cleanup_mux
	Revert "xhci: add quirk for host controllers that don't update endpoint DCS"
	ALSA: hda/realtek: Support ASUS G713PV laptop
	ALSA: hda/relatek: Enable Mute LED on HP 250 G8
	hwmon: (k10temp) Enable AMD3255 Proc to show negative temperature
	hwmon: (nct7802) Fix for temp6 (PECI1) processed even if PECI1 disabled
	btrfs: account block group tree when calculating global reserve size
	btrfs: check if the transaction was aborted at btrfs_wait_for_commit()
	btrfs: check for commit error at btrfs_attach_transaction_barrier()
	x86/MCE/AMD: Decrement threshold_bank refcount when removing threshold blocks
	file: always lock position for FMODE_ATOMIC_POS
	nfsd: Remove incorrect check in nfsd4_validate_stateid
	ACPI/IORT: Remove erroneous id_count check in iort_node_get_rmr_info()
	tpm_tis: Explicitly check for error code
	irq-bcm6345-l1: Do not assume a fixed block to cpu mapping
	irqchip/gic-v4.1: Properly lock VPEs when doing a directLPI invalidation
	locking/rtmutex: Fix task->pi_waiters integrity
	proc/vmcore: fix signedness bug in read_from_oldmem()
	xen: speed up grant-table reclaim
	virtio-net: fix race between set queues and probe
	net: dsa: qca8k: fix search_and_insert wrong handling of new rule
	net: dsa: qca8k: fix broken search_and_del
	net: dsa: qca8k: fix mdb add/del case with 0 VID
	selftests: mptcp: join: only check for ip6tables if needed
	soundwire: fix enumeration completion
	Revert "um: Use swap() to make code cleaner"
	LoongArch: BPF: Fix check condition to call lu32id in move_imm()
	LoongArch: BPF: Enable bpf_probe_read{, str}() on LoongArch
	s390/dasd: fix hanging device after quiesce/resume
	s390/dasd: print copy pair message only for the correct error
	ASoC: wm8904: Fill the cache for WM8904_ADC_TEST_0 register
	arm64/sme: Set new vector length before reallocating
	PM: sleep: wakeirq: fix wake irq arming
	ceph: never send metrics if disable_send_metrics is set
	drm/i915/dpt: Use shmem for dpt objects
	dm cache policy smq: ensure IO doesn't prevent cleaner policy progress
	rbd: make get_lock_owner_info() return a single locker or NULL
	rbd: harden get_lock_owner_info() a bit
	rbd: retrieve and check lock owner twice before blocklisting
	drm/amd/display: set per pipe dppclk to 0 when dpp is off
	tracing: Fix trace_event_raw_event_synth() if else statement
	drm/amd/display: perform a bounds check before filling dirty rectangles
	drm/amd/display: Write to correct dirty_rect
	ACPI: processor: perflib: Use the "no limit" frequency QoS
	ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily
	cpufreq: intel_pstate: Drop ACPI _PSS states table patching
	mptcp: ensure subflow is unhashed before cleaning the backlog
	selftests: mptcp: sockopt: use 'iptables-legacy' if available
	test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation
	dma-buf: keep the signaling time of merged fences v3
	dma-buf: fix an error pointer vs NULL bug
	Linux 6.1.43

Change-Id: Id1d61f2351c51edad33ab654f1f3d911b9a75830
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-09-12 12:36:39 +00:00
Robin Murphy
8ddb3183c4 iommu/arm-smmu-v3: Document nesting-related errata
commit 0bfbfc526c70606bf0fad302e4821087cbecfaf4 upstream

Both MMU-600 and MMU-700 have similar errata around TLB invalidation
while both stages of translation are active, which will need some
consideration once nesting support is implemented. For now, though,
it's very easy to make our implicit lack of nesting support explicit
for those cases, so they're less likely to be missed in future.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/696da78d32bb4491f898f11b0bb4d850a8aa7c6a.1683731256.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-11 12:08:09 +02:00
Robin Murphy
57ae3671ec iommu/arm-smmu-v3: Document MMU-700 erratum 2812531
commit 309a15cb16bb075da1c99d46fb457db6a1a2669e upstream

To work around MMU-700 erratum 2812531 we need to ensure that certain
sequences of commands cannot be issued without an intervening sync. In
practice this falls out of our current command-batching machinery
anyway - each batch only contains a single type of invalidation command,
and ends with a sync. The only exception is when a batch is sufficiently
large to need issuing across multiple command queue slots, wherein the
earlier slots will not contain a sync and thus may in theory interleave
with another batch being issued in parallel to create an affected
sequence across the slot boundary.

Since MMU-700 supports range invalidate commands and thus we will prefer
to use them (which also happens to avoid conditions for other errata),
I'm not entirely sure it's even possible for a single high-level
invalidate call to generate a batch of more than 63 commands, but for
the sake of robustness and documentation, wire up an option to enforce
that a sync is always inserted for every slot issued.

The other aspect is that the relative order of DVM commands cannot be
controlled, so DVM cannot be used. Again that is already the status quo,
but since we have at least defined ARM_SMMU_FEAT_BTM, we can explicitly
disable it for documentation purposes even if it's not wired up anywhere
yet.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/330221cdfd0003cd51b6c04e7ff3566741ad8374.1683731256.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-11 12:08:09 +02:00
Robin Murphy
e3399bd014 iommu/arm-smmu-v3: Work around MMU-600 erratum 1076982
commit f322e8af35c7f23a8c08b595c38d6c855b2d836f upstream

MMU-600 versions prior to r1p0 fail to correctly generate a WFE wakeup
event when the command queue transitions fom full to non-full. We can
easily work around this by simply hiding the SEV capability such that we
fall back to polling for space in the queue - since MMU-600 implements
MSIs we wouldn't expect to need SEV for sync completion either, so this
should have little to no impact.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/08adbe3d01024d8382a478325f73b56851f76e49.1683731256.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-11 12:08:09 +02:00
Oliver Upton
cde7f2fd63 arm64: errata: Mitigate Ampere1 erratum AC03_CPU_38 at stage-2
[ Upstream commit 6df696cd9bc1ceed0e92e36908f88bbd16d18255 ]

AmpereOne has an erratum in its implementation of FEAT_HAFDBS that
required disabling the feature on the design. This was done by reporting
the feature as not implemented in the ID register, although the
corresponding control bits were not actually RES0. This does not align
well with the requirements of the architecture, which mandates these
bits be RES0 if HAFDBS isn't implemented.

The kernel's use of stage-1 is unaffected, as the HA and HD bits are
only set if HAFDBS is detected in the ID register. KVM, on the other
hand, relies on the RES0 behavior at stage-2 to use the same value for
VTCR_EL2 on any cpu in the system. Mitigate the non-RES0 behavior by
leaving VTCR_EL2.HA clear on affected systems.

Cc: stable@vger.kernel.org
Cc: D Scott Phillips <scott@os.amperecomputing.com>
Cc: Darren Hart <darren@os.amperecomputing.com>
Acked-by: D Scott Phillips <scott@os.amperecomputing.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20230609220104.1836988-2-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-08-03 10:23:54 +02:00
Lorenzo Pieralisi
d3b37a712a BACKPORT: FROMGIT: irqchip/gic-v3: Workaround for GIC-700 erratum 2941627
GIC700 erratum 2941627 may cause GIC-700 missing SPIs wake
requests when SPIs are deactivated while targeting a
sleeping CPU - ie a CPU for which the redistributor:

GICR_WAKER.ProcessorSleep == 1

This runtime situation can happen if an SPI that has been
activated on a core is retargeted to a different core, it
becomes pending and the target core subsequently enters a
power state quiescing the respective redistributor.

When this situation is hit, the de-activation carried out
on the core that activated the SPI (through either ICC_EOIR1_EL1
or ICC_DIR_EL1 register writes) does not trigger a wake
requests for the sleeping GIC redistributor even if the SPI
is pending.

Work around the erratum by de-activating the SPI using the
redistributor GICD_ICACTIVER register if the runtime
conditions require it (ie the IRQ was retargeted between
activation and de-activation).

Bug: 292459437
Change-Id: Ide915b8c925a631a7fc9ccebca19d9175def162e
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230704155034.148262-1-lpieralisi@kernel.org
(cherry picked from commit 6fe5c68ee6a1aae0ef291a56001e7888de547fa2 https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/irqchip-fixes)
Signed-off-by: Carlos Galo <carlosgalo@google.com>
2023-07-27 19:40:08 +00:00
Shanker Donthineni
86ba4f7b9f irqchip/gicv3: Workaround for NVIDIA erratum T241-FABRIC-4
[ Upstream commit 35727af2b15d98a2dd2811d631d3a3886111312e ]

The T241 platform suffers from the T241-FABRIC-4 erratum which causes
unexpected behavior in the GIC when multiple transactions are received
simultaneously from different sources. This hardware issue impacts
NVIDIA server platforms that use more than two T241 chips
interconnected. Each chip has support for 320 {E}SPIs.

This issue occurs when multiple packets from different GICs are
incorrectly interleaved at the target chip. The erratum text below
specifies exactly what can cause multiple transfer packets susceptible
to interleaving and GIC state corruption. GIC state corruption can
lead to a range of problems, including kernel panics, and unexpected
behavior.

>From the erratum text:
  "In some cases, inter-socket AXI4 Stream packets with multiple
  transfers, may be interleaved by the fabric when presented to ARM
  Generic Interrupt Controller. GIC expects all transfers of a packet
  to be delivered without any interleaving.

  The following GICv3 commands may result in multiple transfer packets
  over inter-socket AXI4 Stream interface:
   - Register reads from GICD_I* and GICD_N*
   - Register writes to 64-bit GICD registers other than GICD_IROUTERn*
   - ITS command MOVALL

  Multiple commands in GICv4+ utilize multiple transfer packets,
  including VMOVP, VMOVI, VMAPP, and 64-bit register accesses."

  This issue impacts system configurations with more than 2 sockets,
  that require multi-transfer packets to be sent over inter-socket
  AXI4 Stream interface between GIC instances on different sockets.
  GICv4 cannot be supported. GICv3 SW model can only be supported
  with the workaround. Single and Dual socket configurations are not
  impacted by this issue and support GICv3 and GICv4."

Link: https://developer.nvidia.com/docs/t241-fabric-4/nvidia-t241-fabric-4-errata.pdf

Writing to the chip alias region of the GICD_In{E} registers except
GICD_ICENABLERn has an equivalent effect as writing to the global
distributor. The SPI interrupt deactivate path is not impacted by
the erratum.

To fix this problem, implement a workaround that ensures read accesses
to the GICD_In{E} registers are directed to the chip that owns the
SPI, and disable GICv4.x features. To simplify code changes, the
gic_configure_irq() function uses the same alias region for both read
and write operations to GICD_ICFGR.

Co-developed-by: Vikram Sethi <vsethi@nvidia.com>
Signed-off-by: Vikram Sethi <vsethi@nvidia.com>
Signed-off-by: Shanker Donthineni <sdonthineni@nvidia.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com> (for SMCCC/SOC ID bits)
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230319024314.3540573-2-sdonthineni@nvidia.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-05-24 17:32:36 +01:00
Linus Torvalds
089d1c3122 ARM:
* Fix the pKVM stage-1 walker erronously using the stage-2 accessor
 
 * Correctly convert vcpu->kvm to a hyp pointer when generating
   an exception in a nVHE+MTE configuration
 
 * Check that KVM_CAP_DIRTY_LOG_* are valid before enabling them
 
 * Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE
 
 * Document the boot requirements for FGT when entering the kernel
   at EL1
 
 x86:
 
 * Use SRCU to protect zap in __kvm_set_or_clear_apicv_inhibit()
 
 * Make argument order consistent for kvcalloc()
 
 * Userspace API fixes for DEBUGCTL and LBRs
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
"ARM:

   - Fix the pKVM stage-1 walker erronously using the stage-2 accessor

   - Correctly convert vcpu->kvm to a hyp pointer when generating an
     exception in a nVHE+MTE configuration

   - Check that KVM_CAP_DIRTY_LOG_* are valid before enabling them

   - Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE

   - Document the boot requirements for FGT when entering the kernel at
     EL1

  x86:

   - Use SRCU to protect zap in __kvm_set_or_clear_apicv_inhibit()

   - Make argument order consistent for kvcalloc()

   - Userspace API fixes for DEBUGCTL and LBRs"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: Fix a typo about the usage of kvcalloc()
  KVM: x86: Use SRCU to protect zap in __kvm_set_or_clear_apicv_inhibit()
  KVM: VMX: Ignore guest CPUID for host userspace writes to DEBUGCTL
  KVM: VMX: Fold vmx_supported_debugctl() into vcpu_supported_debugctl()
  KVM: VMX: Advertise PMU LBRs if and only if perf supports LBRs
  arm64: booting: Document our requirements for fine grained traps with SME
  KVM: arm64: Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE
  KVM: Check KVM_CAP_DIRTY_LOG_{RING, RING_ACQ_REL} prior to enabling them
  KVM: arm64: Fix bad dereference on MTE-enabled systems
  KVM: arm64: Use correct accessor to parse stage-1 PTEs
2022-11-06 10:46:59 -08:00
Amit Daniel Kachhap
85f1506337 arm64: cpufeature: Fix the visibility of compat hwcaps
Commit 237405ebef ("arm64: cpufeature: Force HWCAP to be based on the
sysreg visible to user-space") forced the hwcaps to use sanitised
user-space view of the id registers. However, the ID register structures
used to select few compat cpufeatures (vfp, crc32, ...) are masked and
hence such hwcaps do not appear in /proc/cpuinfo anymore for PER_LINUX32
personality.

Add the ID register structures explicitly and set the relevant entry as
visible. As these ID registers are now of type visible so make them
available in 64-bit userspace by making necessary changes in register
emulation logic and documentation.

While at it, update the comment for structure ftr_generic_32bits[] which
lists the ID register that use it.

Fixes: 237405ebef ("arm64: cpufeature: Force HWCAP to be based on the sysreg visible to user-space")
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: James Morse <james.morse@arm.com>
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Link: https://lore.kernel.org/r/20221103082232.19189-1-amit.kachhap@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-11-03 18:04:56 +00:00
Mark Brown
be0ddf5293 arm64: booting: Document our requirements for fine grained traps with SME
With SME we require that fine grained traps on access to TPIDR2_EL0 and
SMPRI_EL1 are disabled but did not document that fact. Add the relevant
register bits.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221101112716.52035-2-broonie@kernel.org
2022-11-01 19:30:34 +00:00
James Morse
171df58028 arm64: errata: Add Cortex-A55 to the repeat tlbi list
Cortex-A55 is affected by an erratum where in rare circumstances the
CPUs may not handle a race between a break-before-make sequence on one
CPU, and another CPU accessing the same page. This could allow a store
to a page that has been unmapped.

Work around this by adding the affected CPUs to the list that needs
TLB sequences to be done twice.

Signed-off-by: James Morse <james.morse@arm.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220930131959.3082594-1-james.morse@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-10-07 14:42:20 +01:00
Catalin Marinas
b23ec74cbd Merge branches 'for-next/doc', 'for-next/sve', 'for-next/sysreg', 'for-next/gettimeofday', 'for-next/stacktrace', 'for-next/atomics', 'for-next/el1-exceptions', 'for-next/a510-erratum-2658417', 'for-next/defconfig', 'for-next/tpidr2_el0' and 'for-next/ftrace', remote-tracking branch 'arm64/for-next/perf' into for-next/core
* arm64/for-next/perf:
  arm64: asm/perf_regs.h: Avoid C++-style comment in UAPI header
  arm64/sve: Add Perf extensions documentation
  perf: arm64: Add SVE vector granule register to user regs
  MAINTAINERS: add maintainers for Alibaba' T-Head PMU driver
  drivers/perf: add DDR Sub-System Driveway PMU driver for Yitian 710 SoC
  docs: perf: Add description for Alibaba's T-Head PMU driver

* for-next/doc:
  : Documentation/arm64 updates
  arm64/sve: Document our actual ABI for clearing registers on syscall

* for-next/sve:
  : SVE updates
  arm64/sysreg: Add hwcap for SVE EBF16

* for-next/sysreg: (35 commits)
  : arm64 system registers generation (more conversions)
  arm64/sysreg: Fix a few missed conversions
  arm64/sysreg: Convert ID_AA64AFRn_EL1 to automatic generation
  arm64/sysreg: Convert ID_AA64DFR1_EL1 to automatic generation
  arm64/sysreg: Convert ID_AA64FDR0_EL1 to automatic generation
  arm64/sysreg: Use feature numbering for PMU and SPE revisions
  arm64/sysreg: Add _EL1 into ID_AA64DFR0_EL1 definition names
  arm64/sysreg: Align field names in ID_AA64DFR0_EL1 with architecture
  arm64/sysreg: Add defintion for ALLINT
  arm64/sysreg: Convert SCXTNUM_EL1 to automatic generation
  arm64/sysreg: Convert TIPDR_EL1 to automatic generation
  arm64/sysreg: Convert ID_AA64PFR1_EL1 to automatic generation
  arm64/sysreg: Convert ID_AA64PFR0_EL1 to automatic generation
  arm64/sysreg: Convert ID_AA64MMFR2_EL1 to automatic generation
  arm64/sysreg: Convert ID_AA64MMFR1_EL1 to automatic generation
  arm64/sysreg: Convert ID_AA64MMFR0_EL1 to automatic generation
  arm64/sysreg: Convert HCRX_EL2 to automatic generation
  arm64/sysreg: Standardise naming of ID_AA64PFR1_EL1 SME enumeration
  arm64/sysreg: Standardise naming of ID_AA64PFR1_EL1 BTI enumeration
  arm64/sysreg: Standardise naming of ID_AA64PFR1_EL1 fractional version fields
  arm64/sysreg: Standardise naming for MTE feature enumeration
  ...

* for-next/gettimeofday:
  : Use self-synchronising counter access in gettimeofday() (if FEAT_ECV)
  arm64: vdso: use SYS_CNTVCTSS_EL0 for gettimeofday
  arm64: alternative: patch alternatives in the vDSO
  arm64: module: move find_section to header

* for-next/stacktrace:
  : arm64 stacktrace cleanups and improvements
  arm64: stacktrace: track hyp stacks in unwinder's address space
  arm64: stacktrace: track all stack boundaries explicitly
  arm64: stacktrace: remove stack type from fp translator
  arm64: stacktrace: rework stack boundary discovery
  arm64: stacktrace: add stackinfo_on_stack() helper
  arm64: stacktrace: move SDEI stack helpers to stacktrace code
  arm64: stacktrace: rename unwind_next_common() -> unwind_next_frame_record()
  arm64: stacktrace: simplify unwind_next_common()
  arm64: stacktrace: fix kerneldoc comments

* for-next/atomics:
  : arm64 atomics improvements
  arm64: atomic: always inline the assembly
  arm64: atomics: remove LL/SC trampolines

* for-next/el1-exceptions:
  : Improve the reporting of EL1 exceptions
  arm64: rework BTI exception handling
  arm64: rework FPAC exception handling
  arm64: consistently pass ESR_ELx to die()
  arm64: die(): pass 'err' as long
  arm64: report EL1 UNDEFs better

* for-next/a510-erratum-2658417:
  : Cortex-A510: 2658417: remove BF16 support due to incorrect result
  arm64: errata: remove BF16 HWCAP due to incorrect result on Cortex-A510
  arm64: cpufeature: Expose get_arm64_ftr_reg() outside cpufeature.c
  arm64: cpufeature: Force HWCAP to be based on the sysreg visible to user-space

* for-next/defconfig:
  : arm64 defconfig updates
  arm64: defconfig: Add Coresight as module
  arm64: Enable docker support in defconfig
  arm64: defconfig: Enable memory hotplug and hotremove config
  arm64: configs: Enable all PMUs provided by Arm

* for-next/tpidr2_el0:
  : arm64 ptrace() support for TPIDR2_EL0
  kselftest/arm64: Add coverage of TPIDR2_EL0 ptrace interface
  arm64/ptrace: Support access to TPIDR2_EL0
  arm64/ptrace: Document extension of NT_ARM_TLS to cover TPIDR2_EL0
  kselftest/arm64: Add test coverage for NT_ARM_TLS

* for-next/ftrace:
  : arm64 ftraces updates/fixes
  arm64: ftrace: fix module PLTs with mcount
  arm64: module: Remove unused plt_entry_is_initialized()
  arm64: module: Make plt_equals_entry() static
2022-09-30 09:17:57 +01:00
James Clark
1f2906d1e1 arm64/sve: Add Perf extensions documentation
Document that the VG register is available in Perf samples

Signed-off-by: James Clark <james.clark@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220901132658.1024635-3-james.clark@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-09-22 15:06:02 +01:00
Mark Brown
f285da05c6 arm64/ptrace: Document extension of NT_ARM_TLS to cover TPIDR2_EL0
In order to allow debuggers to discover lazily saved SME state we need
to provide access to TPIDR2_EL0, we will extend the existing NT_ARM_TLS
used for TPIDR to also include TPIDR2_EL0 as the second register in the
regset.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220829154921.837871-3-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-09-21 17:26:58 +01:00
James Morse
1bdb0fbb2e arm64: errata: remove BF16 HWCAP due to incorrect result on Cortex-A510
Cortex-A510's erratum #2658417 causes two BF16 instructions to return the
wrong result in rare circumstances when a pair of A510 CPUs are using
shared neon hardware.

The two instructions affected are BFMMLA and VMMLA, support for these is
indicated by the BF16 HWCAP. Remove it on affected platforms.

Signed-off-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20220909165938.3931307-4-james.morse@arm.com
[catalin.marinas@arm.com: add revision to the Kconfig help; remove .type]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-09-16 15:23:50 +01:00
Mark Brown
81ff692ad9 arm64/sysreg: Add hwcap for SVE EBF16
SVE has a separate identification register indicating support for BFloat16
operations. Add a hwcap identifying support for EBF16 in this register,
mirroring what we did for the non-SVE case.

While there is currently an architectural requirement for BF16 support to
be the same in SVE and non-SVE contexts there are separate identification
registers this separate hwcap helps avoid issues if that requirement were
to be relaxed in the future, we have already chosen to have a separate
capability for base BF16 support.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220829154815.832347-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-09-06 18:53:52 +01:00
Mark Brown
d09ee410a3 arm64/sve: Document our actual ABI for clearing registers on syscall
Currently our ABI documentation says that the state of the bits in the Z
registers not shared with the V registers becomes undefined on syscall but
our actual implementation unconditionally clears these bits. Taking
advantage of the flexibility of our documented ABI would be a change in the
observable ABI so there is concern around doing so, instead document the
actual behaviour so that it is more discoverable for userspace programmers
who might be able to take advantage of it and to record our decision about
not changing the kernel ABI.

This makes qemu's user mode implementation buggy since it does not clear
these bits.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220829162502.886816-3-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-09-06 18:47:11 +01:00
Ionela Voinescu
e89d120c4b arm64: errata: add detection for AMEVCNTR01 incrementing incorrectly
The AMU counter AMEVCNTR01 (constant counter) should increment at the same
rate as the system counter. On affected Cortex-A510 cores, AMEVCNTR01
increments incorrectly giving a significantly higher output value. This
results in inaccurate task scheduler utilization tracking and incorrect
feedback on CPU frequency.

Work around this problem by returning 0 when reading the affected counter
in key locations that results in disabling all users of this counter from
using it either for frequency invariance or as FFH reference counter. This
effect is the same to firmware disabling affected counters.

Details on how the two features are affected by this erratum:

 - AMU counters will not be used for frequency invariance for affected
   CPUs and CPUs in the same cpufreq policy. AMUs can still be used for
   frequency invariance for unaffected CPUs in the system. Although
   unlikely, if no alternative method can be found to support frequency
   invariance for affected CPUs (cpufreq based or solution based on
   platform counters) frequency invariance will be disabled. Please check
   the chapter on frequency invariance at
   Documentation/scheduler/sched-capacity.rst for details of its effect.

 - Given that FFH can be used to fetch either the core or constant counter
   values, restrictions are lifted regarding any of these counters
   returning a valid (!0) value. Therefore FFH is considered supported
   if there is a least one CPU that support AMUs, independent of any
   counters being disabled or affected by this erratum. Clarifying
   comments are now added to the cpc_ffh_supported(), cpu_read_constcnt()
   and cpu_read_corecnt() functions.

The above is achieved through adding a new erratum: ARM64_ERRATUM_2457168.

Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20220819103050.24211-1-ionela.voinescu@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-08-23 11:06:48 +01:00
Martin Liška
0b52f76351 docs/arm64: elf_hwcaps: unify newlines in HWCAP lists
Unify horizontal spacing (remove extra newlines) which
are sensitive to visual presentation by Sphinx.

Fixes: 5e64b862c4 ("arm64/sme: Basic enumeration support")
Signed-off-by: Martin Liska <mliska@suse.cz>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/84e3d6cc-75cf-d6f3-9bb8-be02075aaf6d@suse.cz
Signed-off-by: Will Deacon <will@kernel.org>
2022-08-23 10:38:39 +01:00
Linus Torvalds
aad26f55f4 This was a moderately busy cycle for documentation, but nothing all that
earth-shaking:
 
 - More Chinese translations, and an update to the Italian translations.
   The Japanese, Korean, and traditional Chinese translations are
   more-or-less unmaintained at this point, instead.
 
 - Some build-system performance improvements.
 
 - The removal of the archaic submitting-drivers.rst document, with the
   movement of what useful material that remained into other docs.
 
 - Improvements to sphinx-pre-install to, hopefully, give more useful
   suggestions.
 
 - A number of build-warning fixes
 
 Plus the usual collection of typo fixes, updates, and more.
 -----BEGIN PGP SIGNATURE-----
 
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Merge tag 'docs-6.0' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "This was a moderately busy cycle for documentation, but nothing
  all that earth-shaking:

   - More Chinese translations, and an update to the Italian
     translations.

     The Japanese, Korean, and traditional Chinese translations
     are more-or-less unmaintained at this point, instead.

   - Some build-system performance improvements.

   - The removal of the archaic submitting-drivers.rst document,
     with the movement of what useful material that remained into
     other docs.

   - Improvements to sphinx-pre-install to, hopefully, give more
     useful suggestions.

   - A number of build-warning fixes

  Plus the usual collection of typo fixes, updates, and more"

* tag 'docs-6.0' of git://git.lwn.net/linux: (92 commits)
  docs: efi-stub: Fix paths for x86 / arm stubs
  Docs/zh_CN: Update the translation of sched-stats to 5.19-rc8
  Docs/zh_CN: Update the translation of pci to 5.19-rc8
  Docs/zh_CN: Update the translation of pci-iov-howto to 5.19-rc8
  Docs/zh_CN: Update the translation of usage to 5.19-rc8
  Docs/zh_CN: Update the translation of testing-overview to 5.19-rc8
  Docs/zh_CN: Update the translation of sparse to 5.19-rc8
  Docs/zh_CN: Update the translation of kasan to 5.19-rc8
  Docs/zh_CN: Update the translation of iio_configfs to 5.19-rc8
  doc:it_IT: align Italian documentation
  docs: Remove spurious tag from admin-guide/mm/overcommit-accounting.rst
  Documentation: process: Update email client instructions for Thunderbird
  docs: ABI: correct QEMU fw_cfg spec path
  doc/zh_CN: remove submitting-driver reference from docs
  docs: zh_TW: align to submitting-drivers removal
  docs: zh_CN: align to submitting-drivers removal
  docs: ko_KR: howto: remove reference to removed submitting-drivers
  docs: ja_JP: howto: remove reference to removed submitting-drivers
  docs: it_IT: align to submitting-drivers removal
  docs: process: remove outdated submitting-drivers.rst
  ...
2022-08-02 19:24:24 -07:00
Will Deacon
92867739e3 Merge branch 'for-next/cpufeature' into for-next/core
* for-next/cpufeature:
  arm64/hwcap: Support FEAT_EBF16
  arm64/cpufeature: Store elf_hwcaps as a bitmap rather than unsigned long
  arm64/hwcap: Document allocation of upper bits of AT_HWCAP
  arm64: trap implementation defined functionality in userspace
2022-07-25 10:58:10 +01:00
Will Deacon
2436387f2d Merge branch 'for-next/errata' into for-next/core
* for-next/errata:
  arm64: errata: Remove AES hwcap for COMPAT tasks
  arm64: errata: Add Cortex-A510 to the repeat tlbi list
2022-07-25 10:56:08 +01:00
Mark Brown
a6a468f50d arm64/hwcap: Support FEAT_EBF16
The v9.2 feature FEAT_EBF16 provides support for an extended BFloat16 mode.
Allow userspace to discover system support for this feature by adding a
hwcap for it.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220707103632.12745-4-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2022-07-20 11:18:11 +01:00
James Morse
44b3834b2e arm64: errata: Remove AES hwcap for COMPAT tasks
Cortex-A57 and Cortex-A72 have an erratum where an interrupt that
occurs between a pair of AES instructions in aarch32 mode may corrupt
the ELR. The task will subsequently produce the wrong AES result.

The AES instructions are part of the cryptographic extensions, which are
optional. User-space software will detect the support for these
instructions from the hwcaps. If the platform doesn't support these
instructions a software implementation should be used.

Remove the hwcap bits on affected parts to indicate user-space should
not use the AES instructions.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20220714161523.279570-3-james.morse@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-07-19 19:27:01 +01:00
James Morse
39fdb65f52 arm64: errata: Add Cortex-A510 to the repeat tlbi list
Cortex-A510 is affected by an erratum where in rare circumstances the
CPUs may not handle a race between a break-before-make sequence on one
CPU, and another CPU accessing the same page. This could allow a store
to a page that has been unmapped.

Work around this by adding the affected CPUs to the list that needs
TLB sequences to be done twice.

Signed-off-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20220704155732.21216-1-james.morse@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-07-05 12:26:41 +01:00
Andre Mueller
5bed6a9392 Documentation/arm64: update memory layout table.
Commit b89ddf4cca43("arm64/bpf: Remove 128MB limit for BPF JIT programs")
removes the bpf jit region from the memory layout of the Aarch64
architecture. However, it forgets to update the documentation
accordingly.

- Remove the bpf jit region.
- Fix the Start and End addresses of the modules region.
- Fix the Start address of the vmalloc region.

Signed-off-by: Andre Mueller <am@emlix.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220621081651.61755-1-am@emlix.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-06-23 18:35:40 +01:00
Martin Liška
94bdaa7d9a docs/arm64: elf_hwcaps: Unify HWCAP lists as description lists
Add a series of blank lines to this document to get consistend rendering as
an RST description list.

Signed-off-by: Martin Liska <mliska@suse.cz>
Link: https://lore.kernel.org/r/d0e576ab-6121-b7d7-da5b-7750f05ca7f4@suse.cz
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-06-13 11:31:39 -06:00
Mark Brown
f539316fe8 arm64/sme: Fix SVE/SME typo in ABI documentation
Fix a cut'n'paste error.

Reported-by: Luis Machado <luis.machado@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220608115915.251870-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-06-08 18:38:31 +01:00
Linus Torvalds
bf9095424d S390:
* ultravisor communication device driver
 
 * fix TEID on terminating storage key ops
 
 RISC-V:
 
 * Added Sv57x4 support for G-stage page table
 
 * Added range based local HFENCE functions
 
 * Added remote HFENCE functions based on VCPU requests
 
 * Added ISA extension registers in ONE_REG interface
 
 * Updated KVM RISC-V maintainers entry to cover selftests support
 
 ARM:
 
 * Add support for the ARMv8.6 WFxT extension
 
 * Guard pages for the EL2 stacks
 
 * Trap and emulate AArch32 ID registers to hide unsupported features
 
 * Ability to select and save/restore the set of hypercalls exposed
   to the guest
 
 * Support for PSCI-initiated suspend in collaboration with userspace
 
 * GICv3 register-based LPI invalidation support
 
 * Move host PMU event merging into the vcpu data structure
 
 * GICv3 ITS save/restore fixes
 
 * The usual set of small-scale cleanups and fixes
 
 x86:
 
 * New ioctls to get/set TSC frequency for a whole VM
 
 * Allow userspace to opt out of hypercall patching
 
 * Only do MSR filtering for MSRs accessed by rdmsr/wrmsr
 
 AMD SEV improvements:
 
 * Add KVM_EXIT_SHUTDOWN metadata for SEV-ES
 
 * V_TSC_AUX support
 
 Nested virtualization improvements for AMD:
 
 * Support for "nested nested" optimizations (nested vVMLOAD/VMSAVE,
   nested vGIF)
 
 * Allow AVIC to co-exist with a nested guest running
 
 * Fixes for LBR virtualizations when a nested guest is running,
   and nested LBR virtualization support
 
 * PAUSE filtering for nested hypervisors
 
 Guest support:
 
 * Decoupling of vcpu_is_preempted from PV spinlocks
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "S390:

   - ultravisor communication device driver

   - fix TEID on terminating storage key ops

  RISC-V:

   - Added Sv57x4 support for G-stage page table

   - Added range based local HFENCE functions

   - Added remote HFENCE functions based on VCPU requests

   - Added ISA extension registers in ONE_REG interface

   - Updated KVM RISC-V maintainers entry to cover selftests support

  ARM:

   - Add support for the ARMv8.6 WFxT extension

   - Guard pages for the EL2 stacks

   - Trap and emulate AArch32 ID registers to hide unsupported features

   - Ability to select and save/restore the set of hypercalls exposed to
     the guest

   - Support for PSCI-initiated suspend in collaboration with userspace

   - GICv3 register-based LPI invalidation support

   - Move host PMU event merging into the vcpu data structure

   - GICv3 ITS save/restore fixes

   - The usual set of small-scale cleanups and fixes

  x86:

   - New ioctls to get/set TSC frequency for a whole VM

   - Allow userspace to opt out of hypercall patching

   - Only do MSR filtering for MSRs accessed by rdmsr/wrmsr

  AMD SEV improvements:

   - Add KVM_EXIT_SHUTDOWN metadata for SEV-ES

   - V_TSC_AUX support

  Nested virtualization improvements for AMD:

   - Support for "nested nested" optimizations (nested vVMLOAD/VMSAVE,
     nested vGIF)

   - Allow AVIC to co-exist with a nested guest running

   - Fixes for LBR virtualizations when a nested guest is running, and
     nested LBR virtualization support

   - PAUSE filtering for nested hypervisors

  Guest support:

   - Decoupling of vcpu_is_preempted from PV spinlocks"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (199 commits)
  KVM: x86: Fix the intel_pt PMI handling wrongly considered from guest
  KVM: selftests: x86: Sync the new name of the test case to .gitignore
  Documentation: kvm: reorder ARM-specific section about KVM_SYSTEM_EVENT_SUSPEND
  x86, kvm: use correct GFP flags for preemption disabled
  KVM: LAPIC: Drop pending LAPIC timer injection when canceling the timer
  x86/kvm: Alloc dummy async #PF token outside of raw spinlock
  KVM: x86: avoid calling x86 emulator without a decoded instruction
  KVM: SVM: Use kzalloc for sev ioctl interfaces to prevent kernel data leak
  x86/fpu: KVM: Set the base guest FPU uABI size to sizeof(struct kvm_xsave)
  s390/uv_uapi: depend on CONFIG_S390
  KVM: selftests: x86: Fix test failure on arch lbr capable platforms
  KVM: LAPIC: Trace LAPIC timer expiration on every vmentry
  KVM: s390: selftest: Test suppression indication on key prot exception
  KVM: s390: Don't indicate suppression on dirtying, failing memop
  selftests: drivers/s390x: Add uvdevice tests
  drivers/s390/char: Add Ultravisor io device
  MAINTAINERS: Update KVM RISC-V entry to cover selftests support
  RISC-V: KVM: Introduce ISA extension register
  RISC-V: KVM: Cleanup stale TLB entries when host CPU changes
  RISC-V: KVM: Add remote HFENCE functions based on VCPU requests
  ...
2022-05-26 14:20:14 -07:00
Paolo Bonzini
b699da3dc2 KVM/riscv changes for 5.19
- Added Sv57x4 support for G-stage page table
 - Added range based local HFENCE functions
 - Added remote HFENCE functions based on VCPU requests
 - Added ISA extension registers in ONE_REG interface
 - Updated KVM RISC-V maintainers entry to cover selftests support
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Merge tag 'kvm-riscv-5.19-1' of https://github.com/kvm-riscv/linux into HEAD

KVM/riscv changes for 5.19

- Added Sv57x4 support for G-stage page table
- Added range based local HFENCE functions
- Added remote HFENCE functions based on VCPU requests
- Added ISA extension registers in ONE_REG interface
- Updated KVM RISC-V maintainers entry to cover selftests support
2022-05-25 05:09:49 -04:00
Linus Torvalds
143a6252e1 arm64 updates for 5.19:
- Initial support for the ARMv9 Scalable Matrix Extension (SME). SME
   takes the approach used for vectors in SVE and extends this to provide
   architectural support for matrix operations. No KVM support yet, SME
   is disabled in guests.
 
 - Support for crashkernel reservations above ZONE_DMA via the
   'crashkernel=X,high' command line option.
 
 - btrfs search_ioctl() fix for live-lock with sub-page faults.
 
 - arm64 perf updates: support for the Hisilicon "CPA" PMU for monitoring
   coherent I/O traffic, support for Arm's CMN-650 and CMN-700
   interconnect PMUs, minor driver fixes, kerneldoc cleanup.
 
 - Kselftest updates for SME, BTI, MTE.
 
 - Automatic generation of the system register macros from a 'sysreg'
   file describing the register bitfields.
 
 - Update the type of the function argument holding the ESR_ELx register
   value to unsigned long to match the architecture register size
   (originally 32-bit but extended since ARMv8.0).
 
 - stacktrace cleanups.
 
 - ftrace cleanups.
 
 - Miscellaneous updates, most notably: arm64-specific huge_ptep_get(),
   avoid executable mappings in kexec/hibernate code, drop TLB flushing
   from get_clear_flush() (and rename it to get_clear_contig()),
   ARCH_NR_GPIO bumped to 2048 for ARCH_APPLE.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - Initial support for the ARMv9 Scalable Matrix Extension (SME).

   SME takes the approach used for vectors in SVE and extends this to
   provide architectural support for matrix operations. No KVM support
   yet, SME is disabled in guests.

 - Support for crashkernel reservations above ZONE_DMA via the
   'crashkernel=X,high' command line option.

 - btrfs search_ioctl() fix for live-lock with sub-page faults.

 - arm64 perf updates: support for the Hisilicon "CPA" PMU for
   monitoring coherent I/O traffic, support for Arm's CMN-650 and
   CMN-700 interconnect PMUs, minor driver fixes, kerneldoc cleanup.

 - Kselftest updates for SME, BTI, MTE.

 - Automatic generation of the system register macros from a 'sysreg'
   file describing the register bitfields.

 - Update the type of the function argument holding the ESR_ELx register
   value to unsigned long to match the architecture register size
   (originally 32-bit but extended since ARMv8.0).

 - stacktrace cleanups.

 - ftrace cleanups.

 - Miscellaneous updates, most notably: arm64-specific huge_ptep_get(),
   avoid executable mappings in kexec/hibernate code, drop TLB flushing
   from get_clear_flush() (and rename it to get_clear_contig()),
   ARCH_NR_GPIO bumped to 2048 for ARCH_APPLE.

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (145 commits)
  arm64/sysreg: Generate definitions for FAR_ELx
  arm64/sysreg: Generate definitions for DACR32_EL2
  arm64/sysreg: Generate definitions for CSSELR_EL1
  arm64/sysreg: Generate definitions for CPACR_ELx
  arm64/sysreg: Generate definitions for CONTEXTIDR_ELx
  arm64/sysreg: Generate definitions for CLIDR_EL1
  arm64/sve: Move sve_free() into SVE code section
  arm64: Kconfig.platforms: Add comments
  arm64: Kconfig: Fix indentation and add comments
  arm64: mm: avoid writable executable mappings in kexec/hibernate code
  arm64: lds: move special code sections out of kernel exec segment
  arm64/hugetlb: Implement arm64 specific huge_ptep_get()
  arm64/hugetlb: Use ptep_get() to get the pte value of a huge page
  arm64: kdump: Do not allocate crash low memory if not needed
  arm64/sve: Generate ZCR definitions
  arm64/sme: Generate defintions for SVCR
  arm64/sme: Generate SMPRI_EL1 definitions
  arm64/sme: Automatically generate SMPRIMAP_EL2 definitions
  arm64/sme: Automatically generate SMIDR_EL1 defines
  arm64/sme: Automatically generate defines for SMCR
  ...
2022-05-23 21:06:11 -07:00
Catalin Marinas
201729d53a Merge branches 'for-next/sme', 'for-next/stacktrace', 'for-next/fault-in-subpage', 'for-next/misc', 'for-next/ftrace' and 'for-next/crashkernel', remote-tracking branch 'arm64/for-next/perf' into for-next/core
* arm64/for-next/perf:
  perf/arm-cmn: Decode CAL devices properly in debugfs
  perf/arm-cmn: Fix filter_sel lookup
  perf/marvell_cn10k: Fix tad_pmu_event_init() to check pmu type first
  drivers/perf: hisi: Add Support for CPA PMU
  drivers/perf: hisi: Associate PMUs in SICL with CPUs online
  drivers/perf: arm_spe: Expose saturating counter to 16-bit
  perf/arm-cmn: Add CMN-700 support
  perf/arm-cmn: Refactor occupancy filter selector
  perf/arm-cmn: Add CMN-650 support
  dt-bindings: perf: arm-cmn: Add CMN-650 and CMN-700
  perf: check return value of armpmu_request_irq()
  perf: RISC-V: Remove non-kernel-doc ** comments

* for-next/sme: (30 commits)
  : Scalable Matrix Extensions support.
  arm64/sve: Move sve_free() into SVE code section
  arm64/sve: Make kernel FPU protection RT friendly
  arm64/sve: Delay freeing memory in fpsimd_flush_thread()
  arm64/sme: More sensibly define the size for the ZA register set
  arm64/sme: Fix NULL check after kzalloc
  arm64/sme: Add ID_AA64SMFR0_EL1 to __read_sysreg_by_encoding()
  arm64/sme: Provide Kconfig for SME
  KVM: arm64: Handle SME host state when running guests
  KVM: arm64: Trap SME usage in guest
  KVM: arm64: Hide SME system registers from guests
  arm64/sme: Save and restore streaming mode over EFI runtime calls
  arm64/sme: Disable streaming mode and ZA when flushing CPU state
  arm64/sme: Add ptrace support for ZA
  arm64/sme: Implement ptrace support for streaming mode SVE registers
  arm64/sme: Implement ZA signal handling
  arm64/sme: Implement streaming SVE signal handling
  arm64/sme: Disable ZA and streaming mode when handling signals
  arm64/sme: Implement traps and syscall handling for SME
  arm64/sme: Implement ZA context switching
  arm64/sme: Implement streaming SVE context switching
  ...

* for-next/stacktrace:
  : Stacktrace cleanups.
  arm64: stacktrace: align with common naming
  arm64: stacktrace: rename stackframe to unwind_state
  arm64: stacktrace: rename unwinder functions
  arm64: stacktrace: make struct stackframe private to stacktrace.c
  arm64: stacktrace: delete PCS comment
  arm64: stacktrace: remove NULL task check from unwind_frame()

* for-next/fault-in-subpage:
  : btrfs search_ioctl() live-lock fix using fault_in_subpage_writeable().
  btrfs: Avoid live-lock in search_ioctl() on hardware with sub-page faults
  arm64: Add support for user sub-page fault probing
  mm: Add fault_in_subpage_writeable() to probe at sub-page granularity

* for-next/misc:
  : Miscellaneous patches.
  arm64: Kconfig.platforms: Add comments
  arm64: Kconfig: Fix indentation and add comments
  arm64: mm: avoid writable executable mappings in kexec/hibernate code
  arm64: lds: move special code sections out of kernel exec segment
  arm64/hugetlb: Implement arm64 specific huge_ptep_get()
  arm64/hugetlb: Use ptep_get() to get the pte value of a huge page
  arm64: mm: Make arch_faults_on_old_pte() check for migratability
  arm64: mte: Clean up user tag accessors
  arm64/hugetlb: Drop TLB flush from get_clear_flush()
  arm64: Declare non global symbols as static
  arm64: mm: Cleanup useless parameters in zone_sizes_init()
  arm64: fix types in copy_highpage()
  arm64: Set ARCH_NR_GPIO to 2048 for ARCH_APPLE
  arm64: cputype: Avoid overflow using MIDR_IMPLEMENTOR_MASK
  arm64: document the boot requirements for MTE
  arm64/mm: Compute PTRS_PER_[PMD|PUD] independently of PTRS_PER_PTE

* for-next/ftrace:
  : ftrace cleanups.
  arm64/ftrace: Make function graph use ftrace directly
  ftrace: cleanup ftrace_graph_caller enable and disable

* for-next/crashkernel:
  : Support for crashkernel reservations above ZONE_DMA.
  arm64: kdump: Do not allocate crash low memory if not needed
  docs: kdump: Update the crashkernel description for arm64
  of: Support more than one crash kernel regions for kexec -s
  of: fdt: Add memory for devices by DT property "linux,usable-memory-range"
  arm64: kdump: Reimplement crashkernel=X
  arm64: Use insert_resource() to simplify code
  kdump: return -ENOENT if required cmdline option does not exist
2022-05-20 18:50:35 +01:00
Shreyas K K
51f559d665 arm64: Enable repeat tlbi workaround on KRYO4XX gold CPUs
Add KRYO4XX gold/big cores to the list of CPUs that need the
repeat TLBI workaround. Apply this to the affected
KRYO4XX cores (rcpe to rfpe).

The variant and revision bits are implementation defined and are
different from the their Cortex CPU counterparts on which they are
based on, i.e., (r0p0 to r3p0) is equivalent to (rcpe to rfpe).

Signed-off-by: Shreyas K K <quic_shrekk@quicinc.com>
Reviewed-by: Sai Prakash Ranjan <quic_saipraka@quicinc.com>
Link: https://lore.kernel.org/r/20220512110134.12179-1-quic_shrekk@quicinc.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-12 13:15:38 +01:00
Marc Zyngier
b2c4caf331 Merge branch kvm-arm64/wfxt into kvmarm-master/next
* kvm-arm64/wfxt:
  : .
  : Add support for the WFET/WFIT instructions that provide the same
  : service as WFE/WFI, only with a timeout.
  : .
  KVM: arm64: Expose the WFXT feature to guests
  KVM: arm64: Offer early resume for non-blocking WFxT instructions
  KVM: arm64: Handle blocking WFIT instruction
  KVM: arm64: Introduce kvm_counter_compute_delta() helper
  KVM: arm64: Simplify kvm_cpu_has_pending_timer()
  arm64: Use WFxT for __delay() when possible
  arm64: Add wfet()/wfit() helpers
  arm64: Add HWCAP advertising FEAT_WFXT
  arm64: Add RV and RN fields for ESR_ELx_WFx_ISS
  arm64: Expand ESR_ELx_WFx_ISS_TI to match its ARMv8.7 definition

Signed-off-by: Marc Zyngier <maz@kernel.org>
2022-05-04 09:42:16 +01:00
Marc Zyngier
4b88524c47 Merge remote-tracking branch 'arm64/for-next/sme' into kvmarm-master/next
Merge arm64's SME branch to resolve conflicts with the WFxT branch.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2022-05-04 09:38:32 +01:00
Catalin Marinas
c35fe2a68f elf: Fix the arm64 MTE ELF segment name and value
Unfortunately, the name/value choice for the MTE ELF segment type
(PT_ARM_MEMTAG_MTE) was pretty poor: LOPROC+1 is already in use by
PT_AARCH64_UNWIND, as defined in the AArch64 ELF ABI
(https://github.com/ARM-software/abi-aa/blob/main/aaelf64/aaelf64.rst).

Update the ELF segment type value to LOPROC+2 and also change the define
to PT_AARCH64_MEMTAG_MTE to match the AArch64 ELF ABI namespace. The
AArch64 ELF ABI document is updating accordingly (segment type not
previously mentioned in the document).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Fixes: 761b9b366c ("elf: Introduce the ARM MTE ELF segment type")
Cc: Will Deacon <will@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Luis Machado <luis.machado@arm.com>
Cc: Richard Earnshaw <Richard.Earnshaw@arm.com>
Link: https://lore.kernel.org/r/20220425151833.2603830-1-catalin.marinas@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-04-28 11:37:06 +01:00
Peter Collingbourne
b6ba1a89f7 arm64: document the boot requirements for MTE
When booting the kernel we access system registers such as GCR_EL1
if MTE is supported. These accesses are defined to trap to EL3 if
SCR_EL3.ATA is disabled. Furthermore, tag accesses will not behave
as expected if SCR_EL3.ATA is not set, or if HCR_EL2.ATA is not set
and we were booted at EL1. Therefore, require that these bits are
enabled when appropriate.

Signed-off-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://linux-review.googlesource.com/id/Iadcfd4dcd9ba3279b2813970b44d7485b0116709
Link: https://lore.kernel.org/r/20220422202912.292039-1-pcc@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-04-25 17:15:04 +01:00
Mark Brown
5e64b862c4 arm64/sme: Basic enumeration support
This patch introduces basic cpufeature support for discovering the presence
of the Scalable Matrix Extension.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220419112247.711548-9-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-04-22 18:50:49 +01:00
Mark Brown
96d32e6309 arm64/sme: Provide ABI documentation for SME
Provide ABI documentation for SME similar to that for SVE. Due to the very
large overlap around streaming SVE mode in both implementation and
interfaces documentation for streaming mode SVE is added to the SVE
document rather than the SME one.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Link: https://lore.kernel.org/r/20220419112247.711548-5-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-04-22 18:50:39 +01:00
Marc Zyngier
69bb02ebc3 arm64: Add HWCAP advertising FEAT_WFXT
In order to allow userspace to enjoy WFET, add a new HWCAP that
advertises it when available.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220419182755.601427-9-maz@kernel.org
2022-04-20 13:24:44 +01:00
Will Deacon
bf587af2ab Merge branch 'for-next/mte' into for-next/core
* for-next/mte:
  docs: sysfs-devices-system-cpu: document "asymm" value for mte_tcf_preferred
  arm64/mte: Remove asymmetric mode from the prctl() interface
  kasan: fix a missing header include of static_keys.h
  arm64/mte: Add userspace interface for enabling asymmetric mode
  arm64/mte: Add hwcap for asymmetric mode
  arm64/mte: Add a little bit of documentation for mte_update_sctlr_user()
  arm64/mte: Document ABI for asymmetric mode
  arm64: mte: avoid clearing PSTATE.TCO on entry unless necessary
  kasan: split kasan_*enabled() functions into a separate header
2022-03-14 19:01:23 +00:00
Will Deacon
cd92fdfcfa Merge branch 'for-next/errata' into for-next/core
* for-next/errata:
  arm64: Add cavium_erratum_23154_cpus missing sentinel
  irqchip/gic-v3: Workaround Marvell erratum 38545 when reading IAR
2022-03-14 19:00:44 +00:00