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2024-07-26tools/power turbostat: version 2024.07.26Len Brown
Release 2024.07.26: Enable turbostat extensions to add both perf and PMT (Intel Platform Monitoring Technology) counters from the cmdline. Demonstrate PMT access with built-in support for Meteor Lake's Die%c6 counter. This commit: Clean up white-space nits introduced since version 2024.05.10 Signed-off-by: Len Brown <len.brown@intel.com>
2024-07-26tools/power turbostat: Include umask=%x in perf counter's configPatryk Wlazlyn
Some counters, like cpu/cache-misses/, expose and require umask=%x parameter alongside event=%x in the sysfs perf counter's event file. This change make sure we parse and use it when opening user added counters. Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2024-07-26tools/power turbostat: Document PMT in turbostat.8Patryk Wlazlyn
Add a general description of the user interface for adding PMT counters with the new --add pmt,... option. Provide a complete example for requesting two counters. Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2024-07-26tools/power turbostat: Add MTL's PMT DC6 builtin counterPatryk Wlazlyn
Provide a definition for metadata that allows reading DC6 residency counter via PMT and exposes it as a builtin counter. Note that this residency counter is updated and read via entirely different mechanisms vs the MSR-based residency counters. On MTL processors, there are times when Die%c6 will report above 100%. This is still useful, but don't expect 3 digits of precision... Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2024-07-26tools/power turbostat: Add early support for PMT countersPatryk Wlazlyn
Allows users to read Intel PMT (Platform Monitoring Technology) counters, providing interface similar to one used to add MSR and perf counters. Because PMT is exposed as a raw MMIO range, without metadata, user has to supply the necessary information to find and correctly display the requested counter. Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2024-07-26Merge tag 'auxdisplay-for-v6.11-tag1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k Pull auxdisplay updates from Geert Uytterhoeven: - add support for configuring the boot message on line displays - miscellaneous fixes and improvements * tag 'auxdisplay-for-v6.11-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: auxdisplay: ht16k33: Drop reference after LED registration auxdisplay: Use sizeof(*pointer) instead of sizeof(type) auxdisplay: hd44780: add missing MODULE_DESCRIPTION() macro auxdisplay: linedisp: add missing MODULE_DESCRIPTION() macro auxdisplay: linedisp: Support configuring the boot message auxdisplay: charlcd: Provide a forward declaration
2024-07-26Merge tag 'sound-fix-6.11-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "A collection of fixes gathered since the previous pull. We see a bit large LOCs at a HD-audio quirk, but that's only bulk COEF data, hence it's safe to take. In addition to that, there were two minor fixes for MIDI 2.0 handling for ALSA core, and the rest are all rather random small and device-specific fixes" * tag 'sound-fix-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ASoC: fsl-asoc-card: Dynamically allocate memory for snd_soc_dai_link_components ASoC: amd: yc: Support mic on Lenovo Thinkpad E16 Gen 2 ALSA: hda/realtek: Implement sound init sequence for Samsung Galaxy Book3 Pro 360 ALSA: hda/realtek: cs35l41: Fixup remaining asus strix models ASoC: SOF: ipc4-topology: Preserve the DMA Link ID for ChainDMA on unprepare ASoC: SOF: ipc4-topology: Only handle dai_config with HW_PARAMS for ChainDMA ALSA: ump: Force 1 Group for MIDI1 FBs ALSA: ump: Don't update FB name for static blocks ALSA: usb-audio: Add a quirk for Sonix HD USB Camera ASoC: TAS2781: Fix tasdev_load_calibrated_data() ASoC: tegra: select CONFIG_SND_SIMPLE_CARD_UTILS ASoC: Intel: use soc_intel_is_byt_cr() only when IOSF_MBI is reachable ALSA: usb-audio: Move HD Webcam quirk to the right place ALSA: hda: tas2781: mark const variables as __maybe_unused ALSA: usb-audio: Fix microphone sound on HD webcam. ASoC: sof: amd: fix for firmware reload failure in Vangogh platform ASoC: Intel: Fix RT5650 SSP lookup ASOC: SOF: Intel: hda-loader: only wait for HDaudio IOC for IPC4 devices ASoC: SOF: imx8m: Fix DSP control regmap retrieval
2024-07-26Merge tag 'drm-next-2024-07-26' of https://gitlab.freedesktop.org/drm/kernelLinus Torvalds
Pull drm fixes from Dave Airlie: "Fixes for rc1, mostly amdgpu, i915 and xe, with some other misc ones, doesn't seem to be anything too serious. amdgpu: - Bump driver version for GFX12 DCC - DC documention warning fixes - VCN unified queue power fix - SMU fix - RAS fix - Display corruption fix - SDMA 5.2 workaround - GFX12 fixes - Uninitialized variable fix - VCN/JPEG 4.0.3 fixes - Misc display fixes - RAS fixes - VCN4/5 harvest fix - GPU reset fix i915: - Reset intel_dp->link_trained before retraining the link - Don't switch the LTTPR mode on an active link - Do not consider preemption during execlists_dequeue for gen8 - Allow NULL memory region xe: - xe_exec ioctl minor fix on sync entry cleanup upon error - SRIOV: limit VF LMEM provisioning - Wedge mode fixes v3d: - fix indirect dispatch on newer v3d revs panel: - fix panel backlight bindings" * tag 'drm-next-2024-07-26' of https://gitlab.freedesktop.org/drm/kernel: (39 commits) drm/amdgpu: reset vm state machine after gpu reset(vram lost) drm/amdgpu: add missed harvest check for VCN IP v4/v5 drm/amdgpu: Fix eeprom max record count drm/amdgpu: fix ras UE error injection failure issue drm/amd/display: Remove ASSERT if significance is zero in math_ceil2 drm/amd/display: Check for NULL pointer drm/amdgpu/vcn: Use offsets local to VCN/JPEG in VF drm/amdgpu: Add empty HDP flush function to VCN v4.0.3 drm/amdgpu: Add empty HDP flush function to JPEG v4.0.3 drm/amd/amdgpu: Fix uninitialized variable warnings drm/amdgpu: Fix atomics on GFX12 drm/amdgpu/sdma5.2: Update wptr registers as well as doorbell drm/i915: Allow NULL memory region drm/i915/gt: Do not consider preemption during execlists_dequeue for gen8 dt-bindings: display: panel: samsung,atna33xc20: Document ATNA45AF01 drm/xe: Don't suspend device upon wedge drm/xe: Wedge the entire device drm/xe/pf: Limit fair VF LMEM provisioning drm/xe/exec: Fix minor bug related to xe_sync_entry_cleanup drm/amd/display: fix corruption with high refresh rates on DCN 3.0 ...
2024-07-26tools/power turbostat: Add selftests for added perf countersPatryk Wlazlyn
Test adds several perf counters from msr, cstate_core and cstate_pkg groups and checks if the columns for those counters show up. The test skips the counters that are not present. It is not an error, but the test may not be as exhaustive. Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2024-07-26tools/power turbostat: Add selftests for SMI, APERF and MPERF countersPatryk Wlazlyn
The test requests BICs that are dependent on SMI, APERF and MPERF counters and checks if the columns show up in the output and the turbostat doesn't crash. Read the counters in both --no-msr and --no-perf mode. The test skips counters that are not present or user does not have permissions to read. It is not an error, but the test may not be as exhaustive. Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2024-07-26Merge tag 's390-6.11-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull more s390 updates from Vasily Gorbik: - Fix KMSAN build breakage caused by the conflict between s390 and mm-stable trees - Add KMSAN page markers for ptdump - Add runtime constant support - Fix __pa/__va for modules under non-GPL licenses by exporting necessary vm_layout struct with EXPORT_SYMBOL to prevent linkage problems - Fix an endless loop in the CF_DIAG event stop in the CPU Measurement Counter Facility code when the counter set size is zero - Remove the PROTECTED_VIRTUALIZATION_GUEST config option and enable its functionality by default - Support allocation of multiple MSI interrupts per device and improve logging of architecture-specific limitations - Add support for lowcore relocation as a debugging feature to catch all null ptr dereferences in the kernel address space, improving detection beyond the current implementation's limited write access protection - Clean up and rework CPU alternatives to allow for callbacks and early patching for the lowcore relocation * tag 's390-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits) s390: Remove protvirt and kvm config guards for uv code s390/boot: Add cmdline option to relocate lowcore s390/kdump: Make kdump ready for lowcore relocation s390/entry: Make system_call() ready for lowcore relocation s390/entry: Make ret_from_fork() ready for lowcore relocation s390/entry: Make __switch_to() ready for lowcore relocation s390/entry: Make restart_int_handler() ready for lowcore relocation s390/entry: Make mchk_int_handler() ready for lowcore relocation s390/entry: Make int handlers ready for lowcore relocation s390/entry: Make pgm_check_handler() ready for lowcore relocation s390/entry: Add base register to CHECK_VMAP_STACK/CHECK_STACK macro s390/entry: Add base register to SIEEXIT macro s390/entry: Add base register to MBEAR macro s390/entry: Make __sie64a() ready for lowcore relocation s390/head64: Make startup code ready for lowcore relocation s390: Add infrastructure to patch lowcore accesses s390/atomic_ops: Disable flag outputs constraint for GCC versions below 14.2.0 s390/entry: Move SIE indicator flag to thread info s390/nmi: Simplify ptregs setup s390/alternatives: Remove alternative facility list ...
2024-07-26tools/power turbostat: Move verbose counter messages to level 2Patryk Wlazlyn
Printing information about the source and value during initialization and reading of the counter for each cpu, while useful when debugging, results in too verbose output. Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2024-07-26tools/power turbostat: Move debug prints from stdout to stderrPatryk Wlazlyn
This leaves the stdout cleaner, having only counter data. It makes it easier for programs to parse the output of turbostat, for example selftests. Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2024-07-26Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: "The usual summary below, but the main fix is for the fast GUP lockless page-table walk when we have a combination of compile-time and run-time folding of the p4d and the pud respectively. - Remove some redundant Kconfig conditionals - Fix string output in ptrace selftest - Fix fast GUP crashes in some page-table configurations - Remove obsolete linker option when building the vDSO - Fix some sysreg field definitions for the GIC" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: mm: Fix lockless walks with static and dynamic page-table folding arm64/sysreg: Correct the values for GICv4.1 arm64/vdso: Remove --hash-style=sysv kselftest: missing arg in ptrace.c arm64/Kconfig: Remove redundant 'if HAVE_FUNCTION_GRAPH_TRACER' arm64: remove redundant 'if HAVE_ARCH_KASAN' in Kconfig
2024-07-26smb3: add dynamic trace point for session setup key expired failuresSteve French
There are cases where services need to remount (or change their credentials files) when keys have expired, but it can be helpful to have a dynamic trace point to make it easier to notify the service to refresh the storage account key. Here is sample output, one from mount with bad password, one from a reconnect where the password has been changed or expired and reconnect fails (requiring remount with new storage account key) TASK-PID CPU# ||||| TIMESTAMP FUNCTION | | | ||||| | | mount.cifs-11362 [000] ..... 6000.241620: smb3_key_expired: rc=-13 user=testpassu conn_id=0x2 server=localhost addr=127.0.0.1:445 kworker/4:0-8458 [004] ..... 6044.892283: smb3_key_expired: rc=-13 user=testpassu conn_id=0x3 server=localhost addr=127.0.0.1:445 Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2024-07-26Merge tag 'ceph-for-6.11-rc1' of https://github.com/ceph/ceph-clientLinus Torvalds
Pull ceph updates from Ilya Dryomov: "A small patchset to address bogus I/O errors and ultimately an assertion failure in the face of watch errors with -o exclusive mappings in RBD marked for stable and some assorted CephFS fixes" * tag 'ceph-for-6.11-rc1' of https://github.com/ceph/ceph-client: rbd: don't assume rbd_is_lock_owner() for exclusive mappings rbd: don't assume RBD_LOCK_STATE_LOCKED for exclusive mappings rbd: rename RBD_LOCK_STATE_RELEASING and releasing_wait ceph: fix incorrect kmalloc size of pagevec mempool ceph: periodically flush the cap releases ceph: convert comma to semicolon in __ceph_dentry_dir_lease_touch() ceph: use cap_wait_list only if debugfs is enabled
2024-07-26smb3: add four dynamic tracepoints for copy_file_range and reflinkSteve French
Add more dynamic tracepoints to help debug copy_file_range (copychunk) and clone_range ("duplicate extents"). These are tracepoints for entering the function and completing without error. For example: "trace-cmd record -e smb3_copychunk_enter -e smb3_copychunk_done" or "trace-cmd record -e smb3_clone_enter -e smb3_clone_done" Here is sample output: TASK-PID CPU# ||||| TIMESTAMP FUNCTION | | | ||||| | | cp-5964 [005] ..... 2176.168977: smb3_clone_enter: xid=17 sid=0xeb275be4 tid=0x7ffa7cdb source fid=0x1ed02e15 source offset=0x0 target fid=0x1ed02e15 target offset=0x0 len=0xa0000 cp-5964 [005] ..... 2176.170668: smb3_clone_done: xid=17 sid=0xeb275be4 tid=0x7ffa7cdb source fid=0x1ed02e15 source offset=0x0 target fid=0x1ed02e15 target offset=0x0 len=0xa0000 Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2024-07-26smb3: add dynamic tracepoint for reflink errorsSteve French
There are cases where debugging clone_range ("smb2_duplicate_extents" function) and in the future copy_range ("smb2_copychunk_range") can be helpful. Add dynamic trace points for any errors in clone, and a followon patch will add them for copychunk. "trace-cmd record -e smb3_clone_err" Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2024-07-26Merge tag 'erofs-for-6.11-rc1-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs Pull more erofs updates from Gao Xiang: - Support STATX_DIOALIGN and FS_IOC_GETFSSYSFSPATH - Fix a race of LZ4 decompression due to recent refactoring - Another multi-page folio adaption in erofs_bread() * tag 'erofs-for-6.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: erofs: convert comma to semicolon erofs: support multi-page folios for erofs_bread() erofs: add support for FS_IOC_GETFSSYSFSPATH erofs: fix race in z_erofs_get_gbuf() erofs: support STATX_DIOALIGN
2024-07-26Merge tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds
Pull struct file leak fixes from Al Viro: "a couple of leaks on failure exits missing fdput()" * tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: lirc: rc_dev_get_from_fd(): fix file leak powerpc: fix a file leak in kvm_vcpu_ioctl_enable_cap()
2024-07-26arm64: allow installing compressed image by defaultLinus Torvalds
On arm64 we build compressed images, but "make install" by default will install the old non-compressed one. To actually get the compressed image install, you need to use "make zinstall", which is not the usual way to install a kernel. Which may not sound like much of an issue, but when you deal with multiple architectures (and years of your fingers knowing the regular "make install" incantation), this inconsistency is pretty annoying. But as Will Deacon says: "Sadly, bootloaders being as top quality as you might expect, I don't think we're in a position to rely on decompressor support across the board. Our Image.gz is literally just that -- we don't have a built-in decompressor (nor do I think we want to rush into that again after the fun we had on arm32) and the recent EFI zboot support solves that problem for platforms using EFI. Changing the default 'install' target terrifies me. There are bound to be folks with embedded boards who've scripted this and we could really ruin their day if we quietly give them a compressed kernel that their bootloader doesn't know how to handle :/" So make this conditional on a new "COMPRESSED_INSTALL" option. Cc: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Will Deacon <will@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-07-26Merge tag 'bitmap-6.11-rc1' of https://github.com:/norov/linuxLinus Torvalds
Pull bitmap updates from Yury Norov: "Random fixes" * tag 'bitmap-6.11-rc1' of https://github.com:/norov/linux: riscv: Remove unnecessary int cast in variable_fls() radix tree test suite: put definition of bitmap_clear() into lib/bitmap.c bitops: Add a comment explaining the double underscore macros lib: bitmap: add missing MODULE_DESCRIPTION() macros cpumask: introduce assign_cpu() macro
2024-07-26io_uring/napi: pass ktime to io_napi_adjust_timeoutPavel Begunkov
Pass the waiting time for __io_napi_adjust_timeout as ktime and get rid of all timespec64 conversions. It's especially simpler since the caller already have a ktime. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/4f5b8e8eed4f53a1879e031a6712b25381adc23d.1722003776.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-26io_uring/napi: use ktime in busy pollingPavel Begunkov
It's more natural to use ktime/ns instead of keeping around usec, especially since we're comparing it against user provided timers, so convert napi busy poll internal handling to ktime. It's also nicer since the type (ktime_t vs unsigned long) now tells the unit of measure. Keep everything as ktime, which we convert to/from micro seconds for IORING_[UN]REGISTER_NAPI. The net/ busy polling works seems to work with usec, however it's not real usec as shift by 10 is used to get it from nsecs, see busy_loop_current_time(), so it's easy to get truncated nsec back and we get back better precision. Note, we can further improve it later by removing the truncation and maybe convincing net/ to use ktime/ns instead. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/95e7ec8d095069a3ed5d40a4bc6f8b586698bc7e.1722003776.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-26regulator: Further restrict RZG2L USB VBCTRL regulator dependenciesMark Brown
Since the regulator can't be used without the USB controller also tighten the dependency to match, as well as the default. Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://patch.msgid.link/20240726-regulator-restrict-rzg2l-v1-1-640e508896e2@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
2024-07-26Merge tag 'nvme-6.11-2024-07-26' of git://git.infradead.org/nvme into block-6.11Jens Axboe
Pull NVMe fixes from Keith: "nvme fixes for Linux 6.11 - Fix request without payloads cleanup (Leon) - Use new protection information format (Francis) - Improved debug message for lost pci link (Bart) - Another apst quirk (Wang) - Use appropriate sysfs api for printing chars (Markus)" * tag 'nvme-6.11-2024-07-26' of git://git.infradead.org/nvme: nvme-pci: add missing condition check for existence of mapped data nvme-core: choose PIF from QPIF if QPIFS supports and PIF is QTYPE nvme-pci: Fix the instructions for disabling power management nvme: remove redundant bdev local variable nvme-fabrics: Use seq_putc() in __nvmf_concat_opt_tokens() nvme/pci: Add APST quirk for Lenovo N60z laptop
2024-07-26RISC-V: Provide the frequency of time CSR via hwprobePalmer Dabbelt
The RISC-V architecture makes a real time counter CSR (via RDTIME instruction) available for applications in U-mode but there is no architected mechanism for an application to discover the frequency the counter is running at. Some applications (e.g., DPDK) use the time counter for basic performance analysis as well as fine grained time-keeping. Add support to the hwprobe system call to export the time CSR frequency to code running in U-mode. Signed-off-by: Yunhui Cui <cuiyunhui@bytedance.com> Reviewed-by: Evan Green <evan@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Acked-by: Punit Agrawal <punit.agrawal@bytedance.com> Link: https://lore.kernel.org/r/20240702033731.71955-2-cuiyunhui@bytedance.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-07-26riscv: Extend sv39 linear mapping max size to 128GStuart Menefy
This harmonizes all virtual addressing modes which can now all map (PGDIR_SIZE * PTRS_PER_PGD) / 4 of physical memory. The RISCV implementation of KASAN requires that the boundary between shallow mappings are aligned on an 8G boundary. In this case we need VMALLOC_START to be 8G aligned. So although we only need to move the start of the linear mapping down by 4GiB to allow 128GiB to be mapped, we actually move it down by 8GiB (creating a 4GiB hole between the linear mapping and KASAN shadow space) to maintain the alignment requirement. Signed-off-by: Stuart Menefy <stuart.menefy@codasip.com> Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20240630110550.1731929-1-stuart.menefy@codasip.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-07-26Merge patch series "RISC-V: Select ACPI PPTT drivers"Palmer Dabbelt
This series adds support for ACPI PPTT via cacheinfo. * b4-shazam-merge: RISC-V: Select ACPI PPTT drivers riscv: cacheinfo: initialize cacheinfo's level and type from ACPI PPTT riscv: cacheinfo: remove the useless input parameter (node) of ci_leaf_init() Link: https://lore.kernel.org/r/20240617131425.7526-1-cuiyunhui@bytedance.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-07-26Merge patch "Enable SPCR table for console output on RISC-V"Palmer Dabbelt
Sia Jee Heng <jeeheng.sia@starfivetech.com> says: The ACPI SPCR code has been used to enable console output for ARM64 and X86. The same code can be reused for RISC-V. Furthermore, SPCR table is mandated for headless system as outlined in the RISC-V BRS Specification, chapter 6. * b4-shazam-merge: RISC-V: ACPI: Enable SPCR table for console output on RISC-V Link: https://lore.kernel.org/r/20240502073751.102093-1-jeeheng.sia@starfivetech.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-07-26riscv: enable HAVE_ARCH_STACKLEAKJisheng Zhang
Add support for the stackleak feature. Whenever the kernel returns to user space the kernel stack is filled with a poison value. At the same time, disables the plugin in EFI stub code because EFI stub is out of scope for the protection. Tested on qemu and milkv duo: / # echo STACKLEAK_ERASING > /sys/kernel/debug/provoke-crash/DIRECT [ 38.675575] lkdtm: Performing direct entry STACKLEAK_ERASING [ 38.678448] lkdtm: stackleak stack usage: [ 38.678448] high offset: 288 bytes [ 38.678448] current: 496 bytes [ 38.678448] lowest: 1328 bytes [ 38.678448] tracked: 1328 bytes [ 38.678448] untracked: 448 bytes [ 38.678448] poisoned: 14312 bytes [ 38.678448] low offset: 8 bytes [ 38.689887] lkdtm: OK: the rest of the thread stack is properly erased Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Link: https://lore.kernel.org/r/20240623235316.2010-1-jszhang@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-07-26riscv: signal: Remove unlikely() from WARN_ON() conditionZhongqiu Han
"WARN_ON(unlikely(x))" is excessive. WARN_ON() already uses unlikely() internally. Signed-off-by: Zhongqiu Han <quic_zhonhan@quicinc.com> Reviewed-by: Bjorn Andersson <quic_bjorande@quicinc.com> Reviewed-by: Andy Chiu <andy.chiu@sifive.com> Link: https://lore.kernel.org/r/20240620033434.3778156-1-quic_zhonhan@quicinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-07-26riscv: Improve exception and system call latencyAnton Blanchard
Many CPUs implement return address branch prediction as a stack. The RISCV architecture refers to this as a return address stack (RAS). If this gets corrupted then the CPU will mispredict at least one but potentally many function returns. There are two issues with the current RISCV exception code: - We are using the alternate link stack (x5/t0) for the indirect branch which makes the hardware think this is a function return. This will corrupt the RAS. - We modify the return address of handle_exception to point to ret_from_exception. This will also corrupt the RAS. Testing the null system call latency before and after the patch: Visionfive2 (StarFive JH7110 / U74) baseline: 189.87 ns patched: 176.76 ns Lichee pi 4a (T-Head TH1520 / C910) baseline: 666.58 ns patched: 636.90 ns Just over 7% on the U74 and just over 4% on the C910. Signed-off-by: Anton Blanchard <antonb@tenstorrent.com> Signed-off-by: Cyril Bur <cyrilbur@tenstorrent.com> Tested-by: Jisheng Zhang <jszhang@kernel.org> Reviewed-by: Jisheng Zhang <jszhang@kernel.org> Link: https://lore.kernel.org/r/20240607061335.2197383-1-cyrilbur@tenstorrent.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-07-26dt-bindings: i3c: add header for generic I3C flagsCarlos Song
Add header file for generic I3C flags to avoid hard code in dts file. Signed-off-by: Carlos Song <carlos.song@nxp.com> Reviewed-by: Frank Li <frank.li@nxp.com> Acked-by: Jason Liu <jason.hui.liu@nxp.com> Signed-off-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240715225351.3237284-1-Frank.Li@nxp.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: master: svc: Fix error code in svc_i3c_master_do_daa_locked()Dan Carpenter
This code has a typo so it returns positive EIO instead of negative -EIO. Fix it! Fixes: a7809cb368b9 ("i3c: master: svc: Improve DAA STOP handle code logic") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://lore.kernel.org/r/e017edfc-da64-496b-8516-958bec27cd9a@stanley.mountain Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: master: Enhance i3c_bus_type visibility for device searching & event ↵Bhoomik Gupta
monitoring Improve the visibility of i3c_bus_type to facilitate searching for i3c devices attached to the i3c bus. Enable other drivers to use bus_register_notifier to monitor i3c bus device events. Signed-off-by: Bhoomik Gupta <bhoomik.gupta@nxp.com> Link: https://lore.kernel.org/r/20240708053835.3003986-1-bhoomik.gupta@nxp.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: dw: Add power management supportAniket
Add support for runtime and system power management. Handle clocks, resets, pads as part of suspend and resume. Restore controller registers that could be lost due to suspend. Finally add get and put calls appropriately in functions which access controller : bus_init, do_daa, send_ccc_cmd, priv_xfers, i2c_xfers, ibi and hot-join. Signed-off-by: Aniket <aniketmaurya@google.com> Link: https://lore.kernel.org/r/20240708062103.3296587-4-aniketmaurya@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: dw: Add some functions for reusabilityAniket
Separate logic for setting intr/thld registers in a func. Also modify enable function to take care of setting all fields in DEVICE_CTRL. These functions can be reused later for power management. Signed-off-by: Aniket <aniketmaurya@google.com> Link: https://lore.kernel.org/r/20240708062103.3296587-3-aniketmaurya@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: dw: Save timing registers and other valuesAniket
Add variables to store timing registers and other values. These variables would be later used to restore registers during resume without recomputation. Signed-off-by: Aniket <aniketmaurya@google.com> Link: https://lore.kernel.org/r/20240708062103.3296587-2-aniketmaurya@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: master: svc: Improve DAA STOP handle code logicFrank Li
The REQUEST_PROC_DAA command behaves differently from other commands. Sometimes the hardware can auto emit STOP, but in other conditions, it cannot. Improves the code logic to better handle these situations. Hardware can auto emit STOP only when the following conditions are met: - The previous I3C device correctly returns a PID and ACKs an I3C address. - A NACK is received when emitting 7E to try to get the next I3C device's PID. In all other cases, a manual STOP emission is needed. The code is changed to emit STOP when break the while loop and 'return 0' only when the hardware can auto emit STOP. Signed-off-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/r/20240702223107.403057-1-Frank.Li@nxp.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: dw: Add optional apb clockAniket
Besides the core clock, IP also has an apb interface clock. Add an optional hook for the same. Signed-off-by: Aniket <aniketmaurya@google.com> Link: https://lore.kernel.org/r/20240628154618.327151-1-aniketmaurya@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: dw: Use new *_enabled clk APIAniket
Move to "enabled" variant of clk_get API. It takes care of enable and disable calls during the probe and remove. Signed-off-by: Aniket <aniketmaurya@google.com> Link: https://lore.kernel.org/r/20240628154603.326075-1-aniketmaurya@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26dt-bindings: i3c: dw: Add apb clock bindingAniket
Add dt binding for optional apb clock. Core clock is mandatory. Signed-off-by: Aniket <aniketmaurya@google.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240628154526.324068-1-aniketmaurya@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: master: svc: Convert comma to semicolonChen Ni
Replace a comma between expression statements by a semicolon. Signed-off-by: Chen Ni <nichen@iscas.ac.cn> Link: https://lore.kernel.org/r/20240702024758.1411569-1-nichen@iscas.ac.cn Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: mipi-i3c-hci: Round IBI data chunk size to HW supported valueJarkko Nikula
The dma.c: hci_dma_init() sets the CHUNK_SIZE field in the IBI_SETUP register incorrectly if the calculated ibi_chunk_sz is not exactly 2^(n+2) bytes, where n is 0..6. Fix this by rounding the chunk size up to nearest 2^(n+2) bytes. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Link: https://lore.kernel.org/r/20240628131559.502822-4-jarkko.nikula@linux.intel.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: mipi-i3c-hci: Error out instead on BUG_ON() in IBI DMA setupJarkko Nikula
Definitely condition dma_get_cache_alignment * defined value > 256 during driver initialization is not reason to BUG_ON(). Turn that to graceful error out with -EINVAL. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Link: https://lore.kernel.org/r/20240628131559.502822-3-jarkko.nikula@linux.intel.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: mipi-i3c-hci: Set IBI Status and Data Ring base addressesJarkko Nikula
IBI Status and Data Ring base address registers are not set so HW obviously cannot update those rings after In-Band Interrupt. Set them to already allocated and mapped ring addresses. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Link: https://lore.kernel.org/r/20240628131559.502822-2-jarkko.nikula@linux.intel.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: mipi-i3c-hci: Switch to lower_32_bits()/upper_32_bits() helpersJarkko Nikula
Rather than having own lo32()/hi32() helpers for dealing with 32-bit and 64-bit build targets switch to generic lower_32_bits()/upper_32_bits() helpers. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Link: https://lore.kernel.org/r/20240628131559.502822-1-jarkko.nikula@linux.intel.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: dw: Remove ibi_capable propertyAniket
Since DW I3C IP master role always supports IBI, we don't need to keep two variants of master ops and select one using this property. Hence remove the code. Signed-off-by: Aniket <aniketmaurya@google.com> Link: https://lore.kernel.org/r/20240627034119.3938050-1-aniketmaurya@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-07-26i3c: dw: Fix IBI intr programmingAniket
IBI_SIR_REQ_REJECT register is not present if the IP has IC_HAS_IBI_DATA = 1 set. So don't rely on doing read- modify-write op on this register. Instead maintain a variable to store the sir reject mask and use it to set IBI_SIR_REQ_REJECT. Signed-off-by: Aniket <aniketmaurya@google.com> Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>