- 05 Nov, 2023 15 commits
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Alexander Gordeev authored
CRSTs always have size of four pages, while 2KB-size page tables always occupy a single page. Use that information to distinguish page tables from CRSTs. Reviewed-by:
Heiko Carstens <hca@linux.ibm.com> Reviewed-by:
Gerald Schaefer <gerald.schaefer@linux.ibm.com> Signed-off-by:
Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com>
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Alexander Gordeev authored
Cease using 4KB pages to host two 2KB PTEs. That greatly simplifies the memory management code at the expense of page tables memory footprint. Instead of two PTEs per 4KB page use only upper half of the parent page for a single PTE. With that the list of half-used pages pgtable_list becomes unneeded. Further, the upper byte of the parent page _refcount counter does not need to be used for fragments tracking and could be left alone. Commit 8211dad6 ("s390: add pte_free_defer() for pgtables sharing page") introduced the use of PageActive flag to coordinate a deferred free with 2KB page table fragments tracking. Since there is no tracking anymore, there is no need for using PageActive flag. Reviewed-by:
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Heiko Carstens authored
Rework the way physical pages are set no-dat / dat: The old way is: - Rely on that all pages are initially marked "dat" - Allocate page tables for the kernel mapping - Enable dat - Walk the whole kernel mapping and set PG_arch_1 bit in all struct pages that belong to pages of kernel page tables - Walk all struct pages and test and clear the PG_arch_1 bit. If the bit is not set, set the page state to no-dat - For all subsequent page table allocations, set the page state to dat (remove the no-dat state) on allocation time Change this rather complex logic to a simpler approach: - Set the whole physical memory (all pages) to "no-dat" - Explicitly set those page table pages to "dat" which are part of the kernel image (e.g. swapper_pg_dir) - For all subsequent page table allocations, set the page state to dat (remove the no-dat state) on allocation time In result the code is simpler, and this also allows to get rid of one odd usage of the PG_arch_1 bit. Reviewed-by:
Claudio Imbrenda <imbrenda@linux.ibm.com> Signed-off-by:
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Heiko Carstens authored
In order to be usable for early boot code move the simple arch_set_page_dat() function to header file, and add its counter-part arch_set_page_nodat(). Also change the parameters, and the function name slightly. This is required since there aren't any struct pages available in early boot code, and renaming of functions is done to make sure that all users are converted to the new API. Instead of a pointer to a struct page a virtual address is passed, and instead of an order the number of pages for which the page state needs be set. Reviewed-by:
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Heiko Carstens authored
In order to be usable for early boot code move the simple set_page_xxx() function to header file. Also change the parameters, and the function names slightly. This is required since there aren't any struct pages available in early boot code, and renaming of functions is done to make sure that all users are converted to the new API. Instead of a pointer to a struct page a virtual address is passed, and instead of an order the number of pages for which the page state needs be set. Reviewed-by:
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Heiko Carstens authored
The "cmma=" kernel command line parameter needs to be parsed early for upcoming changes. Therefore move the parsing code. Note that EX_TABLE handling of cmma_test_essa() needs to be open-coded, since the early boot code doesn't have infrastructure for handling expected exceptions. Reviewed-by:
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Heiko Carstens authored
Cleanup cmma related inline assemblies: - consolidate inline assemblies - use symbolic names - add same white space where missing - add braces to for-loops which contain a multi-line statement Reviewed-by:
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Harald Freudenberger authored
A secure execution (SE, also known as confidential computing) guest may see asynchronous errors on a crypto firmware queue. The current implementation to gather information about cards and queues in ap_queue_info() simple returns if an asynchronous error is hanging on the firmware queue. If such a situation happened and it was the only queue visible for a crypto card within an SE guest, then the card vanished from sysfs as the AP bus scan function refuses to hold a card without any type information. As lszcrypt evaluates the sysfs such a card vanished from the lszcrypt card listing and the user is baffled and has no way to reset and thus clear the pending asynchronous error. This patch improves the named function to also evaluate GR2 of the TAPQ in case of asynchronous error pending. If there is a not-null value stored in, the info is processed now. In the end, a queue with pending asynchronous error does not lead to a vanishing card any more. Reviewed-by:
Holger Dengler <dengler@linux.ibm.com> Signed-off-by:
Harald Freudenberger <freude@linux.ibm.com> Signed-off-by:
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Ingo Franzki authored
If a card or a queue is in check-stop state, it can't be used by applications to perform crypto operations. Applications check the 'online' sysfs attribute to check if a card or queue is usable. Report a card or queue as offline in case it is in check-stop state. Furthermore, don't allow to set a card or queue online, if it is in check-stop state. This is similar to when the card or the queue is in deconfigured state, there it is also reported as being offline, and it can't be set online. Reviewed-by:
Ingo Franzki <ifranzki@linux.ibm.com> Signed-off-by:
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Heiko Carstens authored
Use the perf_callchain_user() code as blueprint to also add support for USER_STACKTRACE. To describe how to use this cite the commit message of the LoongArch implementation which came with commit 4d7bf939 ("LoongArch: Add USER_STACKTRACE support"), but replace -fno-omit-frame-pointer option with the s390 specific -mbackchain option: ====================================================================== To get the best stacktrace output, you can compile your userspace programs with frame pointers (at least glibc + the app you are tracing). 1, export "CC = gcc -mbackchain"; 2, compile your programs with "CC"; 3, use uprobe to get stacktrace output. ... echo 'p:malloc /usr/lib64/libc.so.6:0x0a4704 size=%r2:u64' > uprobe_events echo 'p:free /usr/lib64/libc.so.6:0x0a4d50 ptr=%r2:u64' >> uprobe_events echo 'comm == "demo"' > ./events/uprobes/malloc/filter echo 'comm == "demo"' > ./events/uprobes/free/filter echo 1 > ./options/userstacktrace echo 1 > ./options/sym-userobj ... ====================================================================== Signed-off-by:
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Heiko Carstens authored
Daan De Meyer and Neal Gompa reported that s390 does not support perf user stack unwinding. This was never implemented since this requires user space to be compiled with the -mbackchain compile option, which until now no distribution did. However this is going to change with Fedora. Therefore provide a perf_callchain_user() implementation. Note that due to the way s390 sets up stack frames the provided call chains can contain invalid values. This is especially true for the first stack frame, where it is not possible to tell if the return address has been written to the stack already or not. Reported-by:
Daan De Meyer <daan.j.demeyer@gmail.com> Reported-by:
Neal Gompa <ngompa@fedoraproject.org> Closes: https://lore.kernel.org/all/CAO8sHcn3+_qrnvp0580aK7jN0Wion5F7KYeBAa4MnCY4mqABPA@mail.gmail.com/ Link: https://lore.kernel.org/all/20231030123558.10816-A-hca@linux.ibm.comReviewed-by:
Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by:
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Harald Freudenberger authored
Fix kernel crash in AP bus code caused by very early invocation of the config change callback function via SCLP. After a fresh IML of the machine the crypto cards are still offline and will get switched online only with activation of any LPAR which has the card in it's configuration. A crypto card coming online is reported to the LPAR via SCLP and the AP bus offers a callback function to get this kind of information. However, it may happen that the callback is invoked before the AP bus init function is complete. As the callback triggers a synchronous AP bus scan, the scan may already run but some internal states are not initialized by the AP bus init function resulting in a crash like this: [ 11.635859] Unable to handle kernel pointer dereference in virtual kernel address space [ 11.635861] Failing address: 0000000000000000 TEID: 0000000000000887 [ 11.635862] Fault in home space mode while using kernel ASCE. [ 11.635864] AS:00000000894c4007 R3:00000001fece8007 S:00000001fece7800 P:000000000000013d [ 11.635879] Oops: 0004 ilc:1 [#1] SMP [ 11.635882] Modules linked in: [ 11.635884] CPU: 5 PID: 42 Comm: kworker/5:0 Not tainted 6.6.0-rc3-00003-g4dbf7cdc6b42 #12 [ 11.635886] Hardware name: IBM 3931 A01 751 (LPAR) [ 11.635887] Workqueue: events_long ap_scan_bus [ 11.635891] Krnl PSW : 0704c00180000000 0000000000000000 (0x0) [ 11.635895] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 RI:0 EA:3 [ 11.635897] Krnl GPRS: 0000000001000a00 0000000000000000 0000000000000006 0000000089591940 [ 11.635899] 0000000080000000 0000000000000a00 0000000000000000 0000000000000000 [ 11.635901] 0000000081870c00 0000000089591000 000000008834e4e2 0000000002625a00 [ 11.635903] 0000000081734200 0000038000913c18 000000008834c6d6 0000038000913ac8 [ 11.635906] Krnl Code:>0000000000000000: 0000 illegal [ 11.635906] 0000000000000002: 0000 illegal [ 11.635906] 0000000000000004: 0000 illegal [ 11.635906] 0000000000000006: 0000 illegal [ 11.635906] 0000000000000008: 0000 illegal [ 11.635906] 000000000000000a: 0000 illegal [ 11.635906] 000000000000000c: 0000 illegal [ 11.635906] 000000000000000e: 0000 illegal [ 11.635915] Call Trace: [ 11.635916] [<0000000000000000>] 0x0 [ 11.635918] [<000000008834e4e2>] ap_queue_init_state+0x82/0xb8 [ 11.635921] [<000000008834ba1c>] ap_scan_domains+0x6fc/0x740 [ 11.635923] [<000000008834c092>] ap_scan_adapter+0x632/0x8b0 [ 11.635925] [<000000008834c3e4>] ap_scan_bus+0xd4/0x288 [ 11.635927] [<00000000879a33ba>] process_one_work+0x19a/0x410 [ 11.635930] Discipline DIAG cannot be used without z/VM [ 11.635930] [<00000000879a3a2c>] worker_thread+0x3fc/0x560 [ 11.635933] [<00000000879aea60>] kthread+0x120/0x128 [ 11.635936] [<000000008792afa4>] __ret_from_fork+0x3c/0x58 [ 11.635938] [<00000000885ebe62>] ret_from_fork+0xa/0x30 [ 11.635942] Last Breaking-Event-Address: [ 11.635942] [<000000008834c6d4>] ap_wait+0xcc/0x148 This patch improves the ap_bus_force_rescan() function which is invoked by the config change callback by checking if a first initial AP bus scan has been done. If not, the force rescan request is simple ignored. Anyhow it does not make sense to trigger AP bus re-scans even before the very first bus scan is complete. Cc: stable@vger.kernel.org Reviewed-by:
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Harald Freudenberger authored
This patch introduces some code lines which check for interrupt support enabled on an AP queue after a reply has been received. This invocation has been chosen as there is a good chance to have the queue empty at that time. As the enablement of the irq imples a state machine change the queue should not have any pending requests or unreceived replies. Reviewed-by:
Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by:
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Harald Freudenberger authored
This patch reworks the irq handling and reporting code for the AP queue interrupt handling to always use the irq info from the queue status. Until now the interrupt status of an AP queue was stored into a bool variable within the ap_queue struct. This variable was set on a successful interrupt enablement and cleared with kicking a reset. However, it may be that the interrupt state is manipulated outband for example by a hypervisor. This patch removes this variable and instead the irq bit from the AP queue status which is always reflecting the current irq state is used. Reviewed-by:
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Alexander Gordeev authored
Commit 6326c26c ("s390: convert various pgalloc functions to use ptdescs") missed to convert tlb_remove_table() into tlb_remove_ptdesc() in few locations. Reviewed-by:
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- 03 Nov, 2023 25 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull s390 updates from Vasily Gorbik: - Get rid of private VM_FAULT flags - Add word-at-a-time implementation - Add DCACHE_WORD_ACCESS support - Cleanup control register handling - Disallow CPU hotplug of CPU 0 to simplify its handling complexity, following a similar restriction in x86 - Optimize pai crypto map allocation - Update the list of crypto express EP11 coprocessor operation modes - Fixes and improvements for secure guests AP pass-through - Several fixes to address incorrect page marking for address translation with the "cmma no-dat" feature, preventing potential incorrect guest TLB flushes - Fix early IPI handling - Several virtual vs physical address confusion fixes - Various small fixes and improvements all over the code * tag 's390-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (74 commits) s390/cio: replace deprecated strncpy with strscpy s390/sclp: replace deprecated strncpy with strtomem s390/cio: fix virtual vs physical address confusion s390/cio: export CMG value as decimal s390: delete the unused store_prefix() function s390/cmma: fix handling of swapper_pg_dir and invalid_pg_dir s390/cmma: fix detection of DAT pages s390/sclp: handle default case in sclp memory notifier s390/pai_crypto: remove per-cpu variable assignement in event initialization s390/pai: initialize event count once at initialization s390/pai_crypto: use PERF_ATTACH_TASK define for per task detection s390/mm: add missing arch_set_page_dat() call to gmap allocations s390/mm: add missing arch_set_page_dat() call to vmem_crst_alloc() s390/cmma: fix initial kernel address space page table walk s390/diag: add missing virt_to_phys() translation to diag224() s390/mm,fault: move VM_FAULT_ERROR handling to do_exception() s390/mm,fault: remove VM_FAULT_BADMAP and VM_FAULT_BADACCESS s390/mm,fault: remove VM_FAULT_SIGNAL s390/mm,fault: remove VM_FAULT_BADCONTEXT s390/mm,fault: simplify kfence fault handling ...
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc updates from Michael Ellerman: - Add support for KVM running as a nested hypervisor under development versions of PowerVM, using the new PAPR nested virtualisation API - Add support for the BPF prog pack allocator - A rework of the non-server MMU handling to support execute-only on all platforms - Some optimisations & cleanups for the powerpc qspinlock code - Various other small features and fixes Thanks to Aboorva Devarajan, Aditya Gupta, Amit Machhiwal, Benjamin Gray, Christophe Leroy, Dr. David Alan Gilbert, Gaurav Batra, Gautam Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Joel Stanley, Jordan Niethe, Julia Lawall, Kautuk Consul, Kuan-Wei Chiu, Michael Neuling, Minjie Du, Muhammad Muzammil, Naveen N Rao, Nicholas Piggin, Nick Child, Nysal Jan K.A, Peter Lafreniere, Rob Herring, Sachin Sant, Sebastian Andrzej Siewior, Shrikanth Hegde, Srikar Dronamraju, Stanislav Kinsburskii, Vaibhav Jain, Wang Yufen, Yang Yingliang, and Yuan Tan. * tag 'powerpc-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (100 commits) powerpc/vmcore: Add MMU information to vmcoreinfo Revert "powerpc: add `cur_cpu_spec` symbol to vmcoreinfo" powerpc/bpf: use bpf_jit_binary_pack_[alloc|finalize|free] powerpc/bpf: rename powerpc64_jit_data to powerpc_jit_data powerpc/bpf: implement bpf_arch_text_invalidate for bpf_prog_pack powerpc/bpf: implement bpf_arch_text_copy powerpc/code-patching: introduce patch_instructions() powerpc/32s: Implement local_flush_tlb_page_psize() powerpc/pseries: use kfree_sensitive() in plpks_gen_password() powerpc/code-patching: Perform hwsync in __patch_instruction() in case of failure powerpc/fsl_msi: Use device_get_match_data() powerpc: Remove cpm_dp...() macros powerpc/qspinlock: Rename yield_propagate_owner tunable powerpc/qspinlock: Propagate sleepy if previous waiter is preempted powerpc/qspinlock: don't propagate the not-sleepy state powerpc/qspinlock: propagate owner preemptedness rather than CPU number powerpc/qspinlock: stop queued waiters trying to set lock sleepy powerpc/perf: Fix disabling BHRB and instruction sampling powerpc/trace: Add support for HAVE_FUNCTION_ARG_ACCESS_API powerpc/tools: Pass -mabi=elfv2 to gcc-check-mprofile-kernel.sh ...
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Linus Torvalds authored
Merge tag 'apparmor-pr-2023-11-03' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor Pull apparmor updates from John Johansen: "This adds initial support for mediating io_uring and userns creation. Adds a new restriction that tightens the use of change_profile, and a couple of optimizations to reduce performance bottle necks that have been found when retrieving the current task's secid and allocating work buffers. The majority of the patch set continues cleaning up and simplifying the code (fixing comments, removing now dead functions, and macros etc). Finally there are 4 bug fixes, with the regression fix having had a couple months of testing. Features: - optimize retrieving current task secid - add base io_uring mediation - add base userns mediation - improve buffer allocation - allow restricting unprivilege change_profile Cleanups: - Fix kernel doc comments - remove unused declarations - remove unused functions - remove unneeded #ifdef - remove unused macros - mark fns static - cleanup fn with unused return values - cleanup audit data - pass cred through to audit data - refcount the pdb instead of using duplicates - make SK_CTX macro an inline fn - some comment cleanups Bug fixes: - fix regression in mount mediation - fix invalid refenece - use passed in gfp flags - advertise avaiability of extended perms and disconnected.path" * tag 'apparmor-pr-2023-11-03' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor: (39 commits) apparmor: Fix some kernel-doc comments apparmor: Fix one kernel-doc comment apparmor: Fix some kernel-doc comments apparmor: mark new functions static apparmor: Fix regression in mount mediation apparmor: cache buffers on percpu list if there is lock contention apparmor: add io_uring mediation apparmor: add user namespace creation mediation apparmor: allow restricting unprivileged change_profile apparmor: advertise disconnected.path is available apparmor: refcount the pdb apparmor: provide separate audit messages for file and policy checks apparmor: pass cred through to audit info. apparmor: rename audit_data->label to audit_data->subj_label apparmor: combine common_audit_data and apparmor_audit_data apparmor: rename SK_CTX() to aa_sock and make it an inline fn apparmor: Optimize retrieving current task secid apparmor: remove unused functions in policy_ns.c/.h apparmor: remove unneeded #ifdef in decompress_zstd() apparmor: fix invalid reference on profile->disconnected ...
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git://git.kernel.org/pub/scm/linux/kernel/git/mic/linuxLinus Torvalds authored
Pull landlock updates from Mickaël Salaün: "A Landlock ruleset can now handle two new access rights: LANDLOCK_ACCESS_NET_BIND_TCP and LANDLOCK_ACCESS_NET_CONNECT_TCP. When handled, the related actions are denied unless explicitly allowed by a Landlock network rule for a specific port. The related patch series has been reviewed for almost two years, it has evolved a lot and we now have reached a decent design, code and testing. The refactored kernel code and the new test helpers also bring the foundation to support more network protocols. Test coverage for security/landlock is 92.4% of 710 lines according to gcc/gcov-13, and it was 93.1% of 597 lines before this series. The decrease in coverage is due to code refactoring to make the ruleset management more generic (i.e. dealing with inodes and ports) that also added new WARN_ON_ONCE() checks not possible to test from user space. syzkaller has been updated accordingly [4], and such patched instance (tailored to Landlock) has been running for a month, covering all the new network-related code [5]" Link: https://lore.kernel.org/r/20231026014751.414649-1-konstantin.meskhidze@huawei.com [1] Link: https://lore.kernel.org/r/CAHC9VhS1wwgH6NNd+cJz4MYogPiRV8NyPDd1yj5SpaxeUB4UVg@mail.gmail.com [2] Link: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next-history.git/commit/?id=c8dc5ee69d3a [3] Link: https://github.com/google/syzkaller/pull/4266 [4] Link: https://storage.googleapis.com/syzbot-assets/82e8608dec36/ci-upstream-linux-next-kasan-gce-root-ab577164.html#security%2flandlock%2fnet.c [5] * tag 'landlock-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: selftests/landlock: Add tests for FS topology changes with network rules landlock: Document network support samples/landlock: Support TCP restrictions selftests/landlock: Add network tests selftests/landlock: Share enforce_ruleset() helper landlock: Support network rules with TCP bind and connect landlock: Refactor landlock_add_rule() syscall landlock: Refactor layer helpers landlock: Move and rename layer helpers landlock: Refactor merge/inherit_ruleset helpers landlock: Refactor landlock_find_rule/insert_rule helpers landlock: Allow FS topology changes for domains without such rule type landlock: Make ruleset's access masks more generic
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Linus Torvalds authored
Merge tag 'perf-tools-for-v6.7-1-2023-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools Pull perf tools updates from Namhyung Kim: "Build: - Compile BPF programs by default if clang (>= 12.0.1) is available to enable more features like kernel lock contention, off-cpu profiling, kwork, sample filtering and so on. This can be disabled by passing BUILD_BPF_SKEL=0 to make. - Produce better error messages for bison on debug build (make DEBUG=1) by defining YYDEBUG symbol internally. perf record: - Track sideband events (like FORK/MMAP) from all CPUs even if perf record targets a subset of CPUs only (using -C option). Otherwise it may lose some information happened on a CPU out of the target list. - Fix checking raw sched_switch tracepoint argument using system BTF. This affects off-cpu profiling which attaches a BPF program to the raw tracepoint. perf lock contention: - Add --lock-cgroup option to see contention by cgroups. This should be used with BPF only (using -b option). $ sudo perf lock con -ab --lock-cgroup -- sleep 1 contended total wait max wait avg wait cgroup 835 14.06 ms 41.19 us 16.83 us /system.slice/led.service 25 122.38 us 13.77 us 4.89 us / 44 23.73 us 3.87 us 539 ns /user.slice/user-657345.slice/session-c4.scope 1 491 ns 491 ns 491 ns /system.slice/connectd.service - Add -G/--cgroup-filter option to see contention only for given cgroups. This can be useful when you identified a cgroup in the above command and want to investigate more on it. It also works with other output options like -t/--threads and -l/--lock-addr. $ sudo perf lock con -ab -G /user.slice/user-657345.slice/session-c4.scope -- sleep 1 contended total wait max wait avg wait type caller 8 77.11 us 17.98 us 9.64 us spinlock futex_wake+0xc8 2 24.56 us 14.66 us 12.28 us spinlock tick_do_update_jiffies64+0x25 1 4.97 us 4.97 us 4.97 us spinlock futex_q_lock+0x2a - Use per-cpu array for better spinlock tracking. This is to improve performance of the BPF program and to avoid nested contention on a lock in the BPF hash map. - Update callstack check for PowerPC. To find a representative caller of a lock, it needs to look up the call stacks. It ends the lookup when it sees 0 in the call stack buffer. However, PowerPC call stacks can have 0 values in the beginning so skip them when it expects valid call stacks after. perf kwork: - Support 'sched' class (for -k option) so that it can see task scheduling event (using sched_switch tracepoint) as well as irq and workqueue items. - Add perf kwork top subcommand to show more accurate cpu utilization with sched class above. It works both with a recorded data (using perf kwork record command) and BPF (using -b option). Unlike perf top command, it does not support interactive mode (yet). $ sudo perf kwork top -b -k sched Starting trace, Hit <Ctrl+C> to stop and report ^C Total : 160702.425 ms, 8 cpus %Cpu(s): 36.00% id, 0.00% hi, 0.00% si %Cpu0 [|||||||||||||||||| 61.66%] %Cpu1 [|||||||||||||||||| 61.27%] %Cpu2 [||||||||||||||||||| 66.40%] %Cpu3 [|||||||||||||||||| 61.28%] %Cpu4 [|||||||||||||||||| 61.82%] %Cpu5 [||||||||||||||||||||||| 77.41%] %Cpu6 [|||||||||||||||||| 61.73%] %Cpu7 [|||||||||||||||||| 63.25%] PID SPID %CPU RUNTIME COMMMAND ------------------------------------------------------------- 0 0 38.72 8089.463 ms [swapper/1] 0 0 38.71 8084.547 ms [swapper/3] 0 0 38.33 8007.532 ms [swapper/0] 0 0 38.26 7992.985 ms [swapper/6] 0 0 38.17 7971.865 ms [swapper/4] 0 0 36.74 7447.765 ms [swapper/7] 0 0 33.59 6486.942 ms [swapper/2] 0 0 22.58 3771.268 ms [swapper/5] 9545 9351 2.48 447.136 ms sched-messaging 9574 9351 2.09 418.583 ms sched-messaging 9724 9351 2.05 372.407 ms sched-messaging 9531 9351 2.01 368.804 ms sched-messaging 9512 9351 2.00 362.250 ms sched-messaging 9514 9351 1.95 357.767 ms sched-messaging 9538 9351 1.86 384.476 ms sched-messaging 9712 9351 1.84 386.490 ms sched-messaging 9723 9351 1.83 380.021 ms sched-messaging 9722 9351 1.82 382.738 ms sched-messaging 9517 9351 1.81 354.794 ms sched-messaging 9559 9351 1.79 344.305 ms sched-messaging 9725 9351 1.77 365.315 ms sched-messaging <SNIP> - Add hard/soft-irq statistics to perf kwork top. This will show the total CPU utilization with IRQ stats like below: $ sudo perf kwork top -b -k sched,irq,softirq Starting trace, Hit <Ctrl+C> to stop and report ^C Total : 12554.889 ms, 8 cpus %Cpu(s): 96.23% id, 0.10% hi, 0.19% si <---- here %Cpu0 [| 4.60%] %Cpu1 [| 4.59%] %Cpu2 [ 2.73%] %Cpu3 [| 3.81%] <SNIP> perf bench: - Add -G/--cgroups option to perf bench sched pipe. The pipe bench is good to measure context switch overhead. With this option, it puts the reader and writer tasks in separate cgroups to enforce context switch between two different cgroups. Also it needs to set CPU affinity of the tasks in a CPU to accurately measure the impact of cgroup context switches. $ sudo perf stat -e context-switches,cgroup-switches -- \ > taskset -c 0 perf bench sched pipe -l 100000 # Running 'sched/pipe' benchmark: # Executed 100000 pipe operations between two processes Total time: 0.307 [sec] 3.078180 usecs/op 324867 ops/sec Performance counter stats for 'taskset -c 0 perf bench sched pipe -l 100000': 200,026 context-switches 63 cgroup-switches 0.321637922 seconds time elapsed You can see small number of cgroup-switches because both write and read tasks are in the same cgroup. $ sudo mkdir /sys/fs/cgroup/{AAA,BBB} $ sudo perf stat -e context-switches,cgroup-switches -- \ > taskset -c 0 perf bench sched pipe -l 100000 -G AAA,BBB # Running 'sched/pipe' benchmark: # Executed 100000 pipe operations between two processes Total time: 0.351 [sec] 3.512990 usecs/op 284657 ops/sec Performance counter stats for 'taskset -c 0 perf bench sched pipe -l 100000 -G AAA,BBB': 200,020 context-switches 200,019 cgroup-switches 0.365034567 seconds time elapsed Now context-switches and cgroup-switches are almost same. And you can see the pipe operation took little more. - Kill child processes when perf bench sched messaging exited abnormally. Otherwise it'd leave the child doing unnecessary work. perf test: - Fix various shellcheck issues on the tests written in shell script. - Skip tests when condition is not satisfied: - object code reading test for non-text section addresses. - CoreSight test if cs_etm// event is not available. - lock contention test if not enough CPUs. Event parsing: - Make PMU alias name loading lazy to reduce the startup time in the event parsing code for perf record, stat and others in the general case. - Lazily compute PMU default config. In the same sense, delay PMU initialization until it's really needed to reduce the startup cost. - Fix event term values that are raw events. The event specification can have several terms including event name. But sometimes it clashes with raw event encoding which starts with 'r' and has hex-digits. For example, an event named 'read' should be processed as a normal event but it was mis-treated as a raw encoding and caused a failure. $ perf stat -e 'uncore_imc_free_running/event=read/' -a sleep 1 event syntax error: '..nning/event=read/' \___ parser error Run 'perf list' for a list of valid events Usage: perf stat [<options>] [<command>] -e, --event <event> event selector. use 'perf list' to list available events Event metrics: - Add "Compat" regex to match event with multiple identifiers. - Usual updates for Intel, Power10, Arm telemetry/CMN and AmpereOne. Misc: - Assorted memory leak fixes and footprint reduction. - Add "bpf_skeletons" to perf version --build-options so that users can check whether their perf tools have BPF support easily. - Fix unaligned access in Intel-PT packet decoder found by undefined-behavior sanitizer. - Avoid frequency mode for the dummy event. Surprisingly it'd impact kernel timer tick handler performance by force iterating all PMU events. - Update bash shell completion for events and metrics" * tag 'perf-tools-for-v6.7-1-2023-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (187 commits) perf vendor events intel: Update tsx_cycles_per_elision metrics perf vendor events intel: Update bonnell version number to v5 perf vendor events intel: Update westmereex events to v4 perf vendor events intel: Update meteorlake events to v1.06 perf vendor events intel: Update knightslanding events to v16 perf vendor events intel: Add typo fix for ivybridge FP perf vendor events intel: Update a spelling in haswell/haswellx perf vendor events intel: Update emeraldrapids to v1.01 perf vendor events intel: Update alderlake/alderlake events to v1.23 perf build: Disable BPF skeletons if clang version is < 12.0.1 perf callchain: Fix spelling mistake "statisitcs" -> "statistics" perf report: Fix spelling mistake "heirachy" -> "hierarchy" perf python: Fix binding linkage due to rename and move of evsel__increase_rlimit() perf tests: test_arm_coresight: Simplify source iteration perf vendor events intel: Add tigerlake two metrics perf vendor events intel: Add broadwellde two metrics perf vendor events intel: Fix broadwellde tma_info_system_dram_bw_use metric perf mem_info: Add and use map_symbol__exit and addr_map_symbol__exit perf callchain: Minor layout changes to callchain_list perf callchain: Make brtype_stat in callchain_list optional ...
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-traceLinus Torvalds authored
Pull tracing updates from Steven Rostedt: - Remove eventfs_file descriptor This is the biggest change, and the second part of making eventfs create its files dynamically. In 6.6 the first part was added, and that maintained a one to one mapping between eventfs meta descriptors and the directories and file inodes and dentries that were dynamically created. The directories were represented by a eventfs_inode and the files were represented by a eventfs_file. In v6.7 the eventfs_file is removed. As all events have the same directory make up (sched_switch has an "enable", "id", "format", etc files), the handing of what files are underneath each leaf eventfs directory is moved back to the tracing subsystem via a callback. When an event is added to the eventfs, it registers an array of evenfs_entry's. These hold the names of the files and the callbacks to call when the file is referenced. The callback gets the name so that the same callback may be used by multiple files. The callback then supplies the filesystem_operations structure needed to create this file. This has brought the memory footprint of creating multiple eventfs instances down by 2 megs each! - User events now has persistent events that are not associated to a single processes. These are privileged events that hang around even if no process is attached to them - Clean up of seq_buf There's talk about using seq_buf more to replace strscpy() and friends. But this also requires some minor modifications of seq_buf to be able to do this - Expand instance ring buffers individually Currently if boot up creates an instance, and a trace event is enabled on that instance, the ring buffer for that instance and the top level ring buffer are expanded (1.4 MB per CPU). This wastes memory as this happens when nothing is using the top level instance - Other minor clean ups and fixes * tag 'trace-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (34 commits) seq_buf: Export seq_buf_puts() seq_buf: Export seq_buf_putc() eventfs: Use simple_recursive_removal() to clean up dentries eventfs: Remove special processing of dput() of events directory eventfs: Delete eventfs_inode when the last dentry is freed eventfs: Hold eventfs_mutex when calling callback functions eventfs: Save ownership and mode eventfs: Test for ei->is_freed when accessing ei->dentry eventfs: Have a free_ei() that just frees the eventfs_inode eventfs: Remove "is_freed" union with rcu head eventfs: Fix kerneldoc of eventfs_remove_rec() tracing: Have the user copy of synthetic event address use correct context eventfs: Remove extra dget() in eventfs_create_events_dir() tracing: Have trace_event_file have ref counters seq_buf: Introduce DECLARE_SEQ_BUF and seq_buf_str() eventfs: Fix typo in eventfs_inode union comment eventfs: Fix WARN_ON() in create_file_dentry() powerpc: Remove initialisation of readpos tracing/histograms: Simplify last_cmd_set() seq_buf: fix a misleading comment ...
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-traceLinus Torvalds authored
Pull tracing tools updates from Steven Rostedt: "RTLA: - In rtla/utils.c, initialize the 'found' variable to avoid garbage when a mount point is not found. Verification: - Remove duplicated imports on dot2k python script" * tag 'trace-tools-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: rtla: Fix uninitialized variable found verification/dot2k: Delete duplicate imports -
git://git.kernel.org/pub/scm/linux/kernel/git/printk/linuxLinus Torvalds authored
Pull printk updates from Petr Mladek: - Another preparation step for introducing printk kthreads. The main piece is a per-console lock with several features: - Support three priorities: normal, emergency, and panic. They will be defined by a context where the lock is taken. A context with a higher priority is allowed to take over the lock from a context with a lower one. The plan is to use the emergency context for Oops and WARN() messages, and also by watchdogs. The panic() context will be used on panic CPU. - The owner might enter/exit regions where it is not safe to take over the lock. It allows the take over the lock a safe way in the middle of a message. For example, serial drivers emit characters one by one. And the serial port is in a safe state in between. Only the final console_flush_in_panic() will be allowed to take over the lock even in the unsafe state (last chance, pray, and hope). - A higher priority context might busy wait with a timeout. The current owner is informed about the waiter and releases the lock on exit from the unsafe state. - The new lock is safe even in atomic contexts, including NMI. Another change is a safe manipulation of per-console sequence number counter under the new lock. - simple_strntoull() micro-optimization - Reduce pr_flush() pooling time. - Calm down false warning about possible buffer invalid access to console buffers when CONFIG_PRINTK is disabled. [ .. and Thomas Gleixner wants to point out that while several of the commits are attributed to him, he only authored the early versions of said commits, and that John Ogness and Petr Mladek have been the ones who sorted out the details and really should be those who get the credit - Linus ] * tag 'printk-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: vsprintf: uninline simple_strntoull(), reorder arguments printk: printk: Remove unnecessary statements＇len = 0;＇ printk: Reduce pr_flush() pooling time printk: fix illegal pbufs access for !CONFIG_PRINTK printk: nbcon: Allow drivers to mark unsafe regions and check state printk: nbcon: Add emit function and callback function for atomic printing printk: nbcon: Add sequence handling printk: nbcon: Add ownership state functions printk: nbcon: Add buffer management printk: Make static printk buffers available to nbcon printk: nbcon: Add acquire/release logic printk: Add non-BKL (nbcon) console basic infrastructure -
Linus Torvalds authored
Merge tag 'livepatching-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching Pull livepatching update from Petr Mladek: - Add missing newline character to avoid waiting for a continuous message * tag 'livepatching-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching: livepatch: Fix missing newline character in klp_resolve_symbols()
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https://github.com/norov/linuxLinus Torvalds authored
Pull bitmap updates from Yury Norov: "This includes the 'bitmap: cleanup bitmap_*_region() implementation' series, and scattered cleanup patches" * tag 'bitmap-for-6.7' of https://github.com/norov/linux: buildid: reduce header file dependencies for module bitmap: move bitmap_*_region() functions to bitmap.h bitmap: drop _reg_op() function bitmap: replace _reg_op(REG_OP_ISFREE) with find_next_bit() bitmap: replace _reg_op(REG_OP_RELEASE) with bitmap_clear() bitmap: replace _reg_op(REG_OP_ALLOC) with bitmap_set() bitmap: fix opencoded bitmap_allocate_region() bitmap: add test for bitmap_*_region() functions bitmap: align __reg_op() wrappers with modern coding style lib/bitmap: split-out string-related operations to a separate files bitmap: Remove dead code, i.e. bitmap_copy_le() bitmap: Fix a typo ("identify map") cpumask: kernel-doc cleanups and additions
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Linus Torvalds authored
Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: "As usual, lots of singleton and doubleton patches all over the tree and there's little I can say which isn't in the individual changelogs. The lengthier patch series are - 'kdump: use generic functions to simplify crashkernel reservation in arch', from Baoquan He. This is mainly cleanups and consolidation of the 'crashkernel=' kernel parameter handling - After much discussion, David Laight's 'minmax: Relax type checks in min() and max()' is here. Hopefully reduces some typecasting and the use of min_t() and max_t() - A group of patches from Oleg Nesterov which clean up and slightly fix our handling of reads from /proc/PID/task/... and which remove task_struct.thread_group" * tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (64 commits) scripts/gdb/vmalloc: disable on no-MMU scripts/gdb: fix usage of MOD_TEXT not defined when CONFIG_MODULES=n .mailmap: add address mapping for Tomeu Vizoso mailmap: update email address for Claudiu Beznea tools/testing/selftests/mm/run_vmtests.sh: lower the ptrace permissions .mailmap: map Benjamin Poirier's address scripts/gdb: add lx_current support for riscv ocfs2: fix a spelling typo in comment proc: test ProtectionKey in proc-empty-vm test proc: fix proc-empty-vm test with vsyscall fs/proc/base.c: remove unneeded semicolon do_io_accounting: use sig->stats_lock do_io_accounting: use __for_each_thread() ocfs2: replace BUG_ON() at ocfs2_num_free_extents() with ocfs2_error() ocfs2: fix a typo in a comment scripts/show_delta: add __main__ judgement before main code treewide: mark stuff as __ro_after_init fs: ocfs2: check status values proc: test /proc/${pid}/statm compiler.h: move __is_constexpr() to compiler.h ...
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mmLinus Torvalds authored
Pull MM updates from Andrew Morton: "Many singleton patches against the MM code. The patch series which are included in this merge do the following: - Kemeng Shi has contributed some compation maintenance work in the series 'Fixes and cleanups to compaction' - Joel Fernandes has a patchset ('Optimize mremap during mutual alignment within PMD') which fixes an obscure issue with mremap()'s pagetable handling during a subsequent exec(), based upon an implementation which Linus suggested - More DAMON/DAMOS maintenance and feature work from SeongJae Park i the following patch series: mm/damon: misc fixups for documents, comments and its tracepoint mm/damon: add a tracepoint for damos apply target regions mm/damon: provide pseudo-moving sum based access rate mm/damon: implement DAMOS apply intervals mm/damon/core-test: Fix memory leaks in core-test mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval - In the series 'Do not try to access unaccepted memory' Adrian Hunter provides some fixups for the recently-added 'unaccepted memory' feature. To increase the feature's checking coverage. 'Plug a few gaps where RAM is exposed without checking if it is unaccepted memory' - In the series 'cleanups for lockless slab shrink' Qi Zheng has done some maintenance work which is preparation for the lockless slab shrinking code - Qi Zheng has redone the earlier (and reverted) attempt to make slab shrinking lockless in the series 'use refcount+RCU method to implement lockless slab shrink' - David Hildenbrand contributes some maintenance work for the rmap code in the series 'Anon rmap cleanups' - Kefeng Wang does more folio conversions and some maintenance work in the migration code. Series 'mm: migrate: more folio conversion and unification' - Matthew Wilcox has fixed an issue in the buffer_head code which was causing long stalls under some heavy memory/IO loads. Some cleanups were added on the way. Series 'Add and use bdev_getblk()' - In the series 'Use nth_page() in place of direct struct page manipulation' Zi Yan has fixed a potential issue with the direct manipulation of hugetlb page frames - In the series 'mm: hugetlb: Skip initialization of gigantic tail struct pages if freed by HVO' has improved our handling of gigantic pages in the hugetlb vmmemmep optimizaton code. This provides significant boot time improvements when significant amounts of gigantic pages are in use - Matthew Wilcox has sent the series 'Small hugetlb cleanups' - code rationalization and folio conversions in the hugetlb code - Yin Fengwei has improved mlock()'s handling of large folios in the series 'support large folio for mlock' - In the series 'Expose swapcache stat for memcg v1' Liu Shixin has added statistics for memcg v1 users which are available (and useful) under memcg v2 - Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable) prctl so that userspace may direct the kernel to not automatically propagate the denial to child processes. The series is named 'MDWE without inheritance' - Kefeng Wang has provided the series 'mm: convert numa balancing functions to use a folio' which does what it says - In the series 'mm/ksm: add fork-exec support for prctl' Stefan Roesch makes is possible for a process to propagate KSM treatment across exec() - Huang Ying has enhanced memory tiering's calculation of memory distances. This is used to permit the dax/kmem driver to use 'high bandwidth memory' in addition to Optane Data Center Persistent Memory Modules (DCPMM). The series is named 'memory tiering: calculate abstract distance based on ACPI HMAT' - In the series 'Smart scanning mode for KSM' Stefan Roesch has optimized KSM by teaching it to retain and use some historical information from previous scans - Yosry Ahmed has fixed some inconsistencies in memcg statistics in the series 'mm: memcg: fix tracking of pending stats updates values' - In the series 'Implement IOCTL to get and optionally clear info about PTEs' Peter Xu has added an ioctl to /proc/<pid>/pagemap which permits us to atomically read-then-clear page softdirty state. This is mainly used by CRIU - Hugh Dickins contributed the series 'shmem,tmpfs: general maintenance', a bunch of relatively minor maintenance tweaks to this code - Matthew Wilcox has increased the use of the VMA lock over file-backed page faults in the series 'Handle more faults under the VMA lock'. Some rationalizations of the fault path became possible as a result - In the series 'mm/rmap: convert page_move_anon_rmap() to folio_move_anon_rmap()' David Hildenbrand has implemented some cleanups and folio conversions - In the series 'various improvements to the GUP interface' Lorenzo Stoakes has simplified and improved the GUP interface with an eye to providing groundwork for future improvements - Andrey Konovalov has sent along the series 'kasan: assorted fixes and improvements' which does those things - Some page allocator maintenance work from Kemeng Shi in the series 'Two minor cleanups to break_down_buddy_pages' - In thes series 'New selftest for mm' Breno Leitao has developed another MM self test which tickles a race we had between madvise() and page faults - In the series 'Add folio_end_read' Matthew Wilcox provides cleanups and an optimization to the core pagecache code - Nhat Pham has added memcg accounting for hugetlb memory in the series 'hugetlb memcg accounting' - Cleanups and rationalizations to the pagemap code from Lorenzo Stoakes, in the series 'Abstract vma_merge() and split_vma()' - Audra Mitchell has fixed issues in the procfs page_owner code's new timestamping feature which was causing some misbehaviours. In the series 'Fix page_owner's use of free timestamps' - Lorenzo Stoakes has fixed the handling of new mappings of sealed files in the series 'permit write-sealed memfd read-only shared mappings' - Mike Kravetz has optimized the hugetlb vmemmap optimization in the series 'Batch hugetlb vmemmap modification operations' - Some buffer_head folio conversions and cleanups from Matthew Wilcox in the series 'Finish the create_empty_buffers() transition' - As a page allocator performance optimization Huang Ying has added automatic tuning to the allocator's per-cpu-pages feature, in the series 'mm: PCP high auto-tuning' - Roman Gushchin has contributed the patchset 'mm: improve performance of accounted kernel memory allocations' which improves their performance by ~30% as measured by a micro-benchmark - folio conversions from Kefeng Wang in the series 'mm: convert page cpupid functions to folios' - Some kmemleak fixups in Liu Shixin's series 'Some bugfix about kmemleak' - Qi Zheng has improved our handling of memoryless nodes by keeping them off the allocation fallback list. This is done in the series 'handle memoryless nodes more appropriately' - khugepaged conversions from Vishal Moola in the series 'Some khugepaged folio conversions'" [ bcachefs conflicts with the dynamically allocated shrinkers have been resolved as per Stephen Rothwell in https://lore.kernel.org/all/20230913093553.4290421e@canb.auug.org.au/ with help from Qi Zheng. The clone3 test filtering conflict was half-arsed by yours truly ] * tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (406 commits) mm/damon/sysfs: update monitoring target regions for online input commit mm/damon/sysfs: remove requested targets when online-commit inputs selftests: add a sanity check for zswap Documentation: maple_tree: fix word spelling error mm/vmalloc: fix the unchecked dereference warning in vread_iter() zswap: export compression failure stats Documentation: ubsan: drop "the" from article title mempolicy: migration attempt to match interleave nodes mempolicy: mmap_lock is not needed while migrating folios mempolicy: alloc_pages_mpol() for NUMA policy without vma mm: add page_rmappable_folio() wrapper mempolicy: remove confusing MPOL_MF_LAZY dead code mempolicy: mpol_shared_policy_init() without pseudo-vma mempolicy trivia: use pgoff_t in shared mempolicy tree mempolicy trivia: slightly more consistent naming mempolicy trivia: delete those ancient pr_debug()s mempolicy: fix migrate_pages(2) syscall return nr_failed kernfs: drop shared NUMA mempolicy hooks hugetlbfs: drop shared NUMA mempolicy pretence mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets() ... -
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds authored
Pull crypto updates from Herbert Xu: "API: - Add virtual-address based lskcipher interface - Optimise ahash/shash performance in light of costly indirect calls - Remove ahash alignmask attribute Algorithms: - Improve AES/XTS performance of 6-way unrolling for ppc - Remove some uses of obsolete algorithms (md4, md5, sha1) - Add FIPS 202 SHA-3 support in pkcs1pad - Add fast path for single-page messages in adiantum - Remove zlib-deflate Drivers: - Add support for S4 in meson RNG driver - Add STM32MP13x support in stm32 - Add hwrng interface support in qcom-rng - Add support for deflate algorithm in hisilicon/zip" * tag 'v6.7-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (283 commits) crypto: adiantum - flush destination page before unmapping crypto: testmgr - move pkcs1pad(rsa,sha3-*) to correct place Documentation/module-signing.txt: bring up to date module: enable automatic module signing with FIPS 202 SHA-3 crypto: asymmetric_keys - allow FIPS 202 SHA-3 signatures crypto: rsa-pkcs1pad - Add FIPS 202 SHA-3 support crypto: FIPS 202 SHA-3 register in hash info for IMA x509: Add OIDs for FIPS 202 SHA-3 hash and signatures crypto: ahash - optimize performance when wrapping shash crypto: ahash - check for shash type instead of not ahash type crypto: hash - move "ahash wrapping shash" functions to ahash.c crypto: talitos - stop using crypto_ahash::init crypto: chelsio - stop using crypto_ahash::init crypto: ahash - improve file comment crypto: ahash - remove struct ahash_request_priv crypto: ahash - remove crypto_ahash_alignmask crypto: gcm - stop using alignmask of ahash crypto: chacha20poly1305 - stop using alignmask of ahash crypto: ccm - stop using alignmask of ahash net: ipv6: stop checking crypto_ahash_alignmask ...
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm updates from Paolo Bonzini: "ARM: - Generalized infrastructure for 'writable' ID registers, effectively allowing userspace to opt-out of certain vCPU features for its guest - Optimization for vSGI injection, opportunistically compressing MPIDR to vCPU mapping into a table - Improvements to KVM's PMU emulation, allowing userspace to select the number of PMCs available to a VM - Guest support for memory operation instructions (FEAT_MOPS) - Cleanups to handling feature flags in KVM_ARM_VCPU_INIT, squashing bugs and getting rid of useless code - Changes to the way the SMCCC filter is constructed, avoiding wasted memory allocations when not in use - Load the stage-2 MMU context at vcpu_load() for VHE systems, reducing the overhead of errata mitigations - Miscellaneous kernel and selftest fixes LoongArch: - New architecture for kvm. The hardware uses the same model as x86, s390 and RISC-V, where guest/host mode is orthogonal to supervisor/user mode. The virtualization extensions are very similar to MIPS, therefore the code also has some similarities but it's been cleaned up to avoid some of the historical bogosities that are found in arch/mips. The kernel emulates MMU, timer and CSR accesses, while interrupt controllers are only emulated in userspace, at least for now. RISC-V: - Support for the Smstateen and Zicond extensions - Support for virtualizing senvcfg - Support for virtualized SBI debug console (DBCN) S390: - Nested page table management can be monitored through tracepoints and statistics x86: - Fix incorrect handling of VMX posted interrupt descriptor in KVM_SET_LAPIC, which could result in a dropped timer IRQ - Avoid WARN on systems with Intel IPI virtualization - Add CONFIG_KVM_MAX_NR_VCPUS, to allow supporting up to 4096 vCPUs without forcing more common use cases to eat the extra memory overhead. - Add virtualization support for AMD SRSO mitigation (IBPB_BRTYPE and SBPB, aka Selective Branch Predictor Barrier). - Fix a bug where restoring a vCPU snapshot that was taken within 1 second of creating the original vCPU would cause KVM to try to synchronize the vCPU's TSC and thus clobber the correct TSC being set by userspace. - Compute guest wall clock using a single TSC read to avoid generating an inaccurate time, e.g. if the vCPU is preempted between multiple TSC reads. - "Virtualize" HWCR.TscFreqSel to make Linux guests happy, which complain about a "Firmware Bug" if the bit isn't set for select F/M/S combos. Likewise "virtualize" (ignore) MSR_AMD64_TW_CFG to appease Windows Server 2022. - Don't apply side effects to Hyper-V's synthetic timer on writes from userspace to fix an issue where the auto-enable behavior can trigger spurious interrupts, i.e. do auto-enabling only for guest writes. - Remove an unnecessary kick of all vCPUs when synchronizing the dirty log without PML enabled. - Advertise "support" for non-serializing FS/GS base MSR writes as appropriate. - Harden the fast page fault path to guard against encountering an invalid root when walking SPTEs. - Omit "struct kvm_vcpu_xen" entirely when CONFIG_KVM_XEN=n. - Use the fast path directly from the timer callback when delivering Xen timer events, instead of waiting for the next iteration of the run loop. This was not done so far because previously proposed code had races, but now care is taken to stop the hrtimer at critical points such as restarting the timer or saving the timer information for userspace. - Follow the lead of upstream Xen and ignore the VCPU_SSHOTTMR_future flag. - Optimize injection of PMU interrupts that are simultaneous with NMIs. - Usual handful of fixes for typos and other warts. x86 - MTRR/PAT fixes and optimizations: - Clean up code that deals with honoring guest MTRRs when the VM has non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled. - Zap EPT entries when non-coherent DMA assignment stops/start to prevent using stale entries with the wrong memtype. - Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y This was done as a workaround for virtual machine BIOSes that did not bother to clear CR0.CD (because ancient KVM/QEMU did not bother to set it, in turn), and there's zero reason to extend the quirk to also ignore guest PAT. x86 - SEV fixes: - Report KVM_EXIT_SHUTDOWN instead of EINVAL if KVM intercepts SHUTDOWN while running an SEV-ES guest. - Clean up the recognition of emulation failures on SEV guests, when KVM would like to "skip" the instruction but it had already been partially emulated. This makes it possible to drop a hack that second guessed the (insufficient) information provided by the emulator, and just do the right thing. Documentation: - Various updates and fixes, mostly for x86 - MTRR and PAT fixes and optimizations" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (164 commits) KVM: selftests: Avoid using forced target for generating arm64 headers tools headers arm64: Fix references to top srcdir in Makefile KVM: arm64: Add tracepoint for MMIO accesses where ISV==0 KVM: arm64: selftest: Perform ISB before reading PAR_EL1 KVM: arm64: selftest: Add the missing .guest_prepare() KVM: arm64: Always invalidate TLB for stage-2 permission faults KVM: x86: Service NMI requests after PMI requests in VM-Enter path KVM: arm64: Handle AArch32 SPSR_{irq,abt,und,fiq} as RAZ/WI KVM: arm64: Do not let a L1 hypervisor access the *32_EL2 sysregs KVM: arm64: Refine _EL2 system register list that require trap reinjection arm64: Add missing _EL2 encodings arm64: Add missing _EL12 encodings KVM: selftests: aarch64: vPMU test for validating user accesses KVM: selftests: aarch64: vPMU register test for unimplemented counters KVM: selftests: aarch64: vPMU register test for implemented counters KVM: selftests: aarch64: Introduce vpmu_counter_access test tools: Import arm_pmuv3.h KVM: arm64: PMU: Allow userspace to limit PMCR_EL0.N for the guest KVM: arm64: Sanitize PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR} before first run KVM: arm64: Add {get,set}_user for PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR} ... -
git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linuxLinus Torvalds authored
Pull sh updates from John Paul Adrian Glaubitz: "While the previously announced patch series for converting arch/sh to device trees is not yet ready for inclusion to mainline and therefore didn't make it for this pull request, there are still a small number changes for v6.7 which include one platform (board plus CPU and driver code) removal plus two fixes. The removal sent in by Arnd Bergmann concerns the microdev board which was an early SuperH prototype board that was never used in production. With the board removed, we were able to drop the now unused code for the SH4-202 CPU and well as the driver code for the superhyway bus and a custom implementation for ioport_map() and ioport_unmap() which will allow us to simplify ioport handling in the future. Another patch set by Geert Uytterhoeven revives SuperH BIOS earlyprintk support which got accidentally disabled in e76fe574 ("sh: Remove old early serial console code V2"), the second patch in the series updates the documentation. Finally, a patch by Masami Hiramatsu fixes a regression reported by the kernel test robot which uncovered that arch/sh is not implementing arch_cmpxchg_local() and therefore needs use __generic_cmpxchg_local() instead" * tag 'sh-for-v6.7-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux: locking/atomic: sh: Use generic_cmpxchg_local for arch_cmpxchg_local() Documentation: kernel-parameters: Add earlyprintk=bios on SH sh: bios: Revive earlyprintk support sh: machvec: Remove custom ioport_{un,}map() sh: Remove superhyway bus support sh: Remove unused SH4-202 support sh: Remove stale microdev board
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git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM updates from Russell King: - fix some kernel-doc warnings - fix stack depot IRQ stack filter - cast memset() byte to unsigned char - explicitly include correct DI includes - fix ARCH_LOW_ADDRESS_LIMIT with CONFIG_ZONE_DMA - fix get_user() problems when linker uses a veneer - make including linux/uaccess.h self-contained on ARM * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9326/1: make <linux/uaccess.h> self-contained for ARM ARM: 9324/1: fix get_user() broken with veneer ARM: 9323/1: mm: Fix ARCH_LOW_ADDRESS_LIMIT when CONFIG_ZONE_DMA ARM: 9322/1: Explicitly include correct DT includes ARM: 9321/1: memset: cast the constant byte to unsigned char ARM: 9320/1: fix stack depot IRQ stack filter ARM: 9319/1: sa1111: fix sa1111_probe kernel-doc warnings
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommuLinus Torvalds authored
Pull m68knommu updates from Greg Ungerer: "A few changes, most of them related to fixing warnings when compiling with "W=1". These follow up Geert's recent changes for M68K for this too. These ones complete the fixes for the nommu and ColdFire specific code. Also a couple of other fixes to improve ROM default addressing and compiling for the Cleopatra boards. Summary: - improve default Kconfig ROM section settings - fix compilation for some Cleopatra boards - fixes and cleanups for warnings compiling with 'W=1'" * tag 'm68knommu-for-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: 68000: fix warning in timer code m68k: 68000: fix warnings in 68000 interrupt handling m68k: coldfire: remove unused variable in MMU code m68k: coldfire: fix warnings in uboot argument processing m68k: coldfire: make mcf_maskimr() static m68k: coldfire: ensure gpio prototypes visible m68k: coldfire: add and use "vectors.h" m68knommu: fix compilation for ColdFire/Cleopatra boards m68knommu: improve config ROM setting defaults
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git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds authored
Pull rdma updates from Jason Gunthorpe: "Nothing exciting this cycle, most of the diffstat is changing SPDX 'or' to 'OR'. Summary: - Bugfixes for hns, mlx5, and hfi1 - Hardening patches for size_*, counted_by, strscpy - rts fixes from static analysis - Dump SRQ objects in rdma netlink, with hns support - Fix a performance regression in mlx5 MR deregistration - New XDR (200Gb/lane) link speed - SRQ record doorbell latency optimization for hns - IPSEC support for mlx5 multi-port mode - ibv_rereg_mr() support for irdma - Affiliated event support for bnxt_re - Opt out for the spec compliant qkey security enforcement as we discovered SW that breaks under enforcement - Comment and trivial updates" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (50 commits) IB/mlx5: Fix init stage error handling to avoid double free of same QP and UAF RDMA/mlx5: Fix mkey cache WQ flush RDMA/hfi1: Workaround truncation compilation error IB/hfi1: Fix potential deadlock on &irq_src_lock and &dd->uctxt_lock RDMA/core: Remove NULL check before dev_{put, hold} RDMA/hfi1: Remove redundant assignment to pointer ppd RDMA/mlx5: Change the key being sent for MPV device affiliation RDMA/bnxt_re: Fix clang -Wimplicit-fallthrough in bnxt_re_handle_cq_async_error() RDMA/hns: Fix init failure of RoCE VF and HIP08 RDMA/hns: Fix unnecessary port_num transition in HW stats allocation RDMA/hns: The UD mode can only be configured with DCQCN RDMA/hns: Add check for SL RDMA/hns: Fix signed-unsigned mixed comparisons RDMA/hns: Fix uninitialized ucmd in hns_roce_create_qp_common() RDMA/hns: Fix printing level of asynchronous events RDMA/core: Add support to set privileged QKEY parameter RDMA/bnxt_re: Do not report SRQ error in srq notification RDMA/bnxt_re: Report async events and errors RDMA/bnxt_re: Update HW interface headers IB/mlx5: Fix rdma counter binding for RAW QP ... -
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI updates from James Bottomley: "Updates to the usual drivers (ufs, megaraid_sas, lpfc, target, ibmvfc, scsi_debug) plus the usual assorted minor fixes and updates. The major change this time around is a prep patch for rethreading of the driver reset handler API not to take a scsi_cmd structure which starts to reduce various drivers' dependence on scsi_cmd in error handling" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (132 commits) scsi: ufs: core: Leave space for '\0' in utf8 desc string scsi: ufs: core: Conversion to bool not necessary scsi: ufs: core: Fix race between force complete and ISR scsi: megaraid: Fix up debug message in megaraid_abort_and_reset() scsi: aic79xx: Fix up NULL command in ahd_done() scsi: message: fusion: Initialize return value in mptfc_bus_reset() scsi: mpt3sas: Fix loop logic scsi: snic: Remove useless code in snic_dr_clean_pending_req() scsi: core: Add comment to target_destroy in scsi_host_template scsi: core: Clean up scsi_dev_queue_ready() scsi: pmcraid: Add missing scsi_device_put() in pmcraid_eh_target_reset_handler() scsi: target: core: Fix kernel-doc comment scsi: pmcraid: Fix kernel-doc comment scsi: core: Handle depopulation and restoration in progress scsi: ufs: core: Add support for parsing OPP scsi: ufs: core: Add OPP support for scaling clocks and regulators scsi: ufs: dt-bindings: common: Add OPP table scsi: scsi_debug: Add param to control sdev's allow_restart scsi: scsi_debug: Add debugfs interface to fail target reset scsi: scsi_debug: Add new error injection type: Reset LUN failed ...
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm updates from Ira Weiny: - updates to deprecated and changed interfaces - bug/kdoc fixes * tag 'libnvdimm-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: libnvdimm: remove kernel-doc warnings: testing: nvdimm: make struct class structures constant libnvdimm: Annotate struct nd_region with __counted_by nd_btt: Make BTT lanes preemptible libnvdimm/of_pmem: Use devm_kstrdup instead of kstrdup and check its return value dax: refactor deprecated strncpy
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https://github.com/cminyard/linux-ipmiLinus Torvalds authored
Pull IPMI update from Corey Minyard: "Only one change, and I would normally just wait, but it will make the people trying to get rid of strncpy happy. Its a good change, anyway" * tag 'for-linus-6.7-1' of https://github.com/cminyard/linux-ipmi: ipmi: refactor deprecated strncpy
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/ledsLinus Torvalds authored
Pull LED updates from Lee Jones: "Core Frameworks: - Add support for a bunch more colours New Drivers: - Add support for Kinetic KTD2026/7 RGB/White LEDs New Functionality: - Add support for device to enter HW Controlled Mode to Turris Omnia LEDs - Add support for HW Gamma Correction to Turris Omnia LEDs Fix-ups: - Apply new __counted_by() annotation to several data structures containing flexible arrays - Rid the return value from Platform's .remove() operation - Use *_cansleep() variants for instances were threads can sleep - Improve the semantics when setting the brightness - Generic clean-ups; code reduction, coding style, standard patterns - Replace strncpy() with strscpy() - Fix-up / add various documentation - Re-author the GPIO associated Trigger to use trigger-sources - Move to using standard APIs and helpers - Improve error checking - Stop using static GPIO bases Bug Fixes: - Fix Pointer to Enum casing warnings - Do not pretend that I2C backed device supports SMBUS - Ensure PWM LEDs are extinguished when disabled, rather than held in a state - Fix 'output may be truncated' warnings" * tag 'leds-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (43 commits) leds: lp5521: Add an error check in lp5521_post_init_device leds: gpio: Update headers leds: gpio: Remove unneeded assignment leds: gpio: Move temporary variable for struct device to gpio_led_probe() leds: gpio: Refactor code to use devm_gpiod_get_index_optional() leds: gpio: Utilise PTR_ERR_OR_ZERO() leds: gpio: Keep driver firmware interface agnostic leds: core: Refactor led_update_brightness() to use standard pattern leds: turris-omnia: Fix brightness setting and trigger activating leds: sc27xx: Move mutex_init() down leds: trigger: netdev: Move size check in set_device_name leds: Add ktd202x driver dt-bindings: leds: Add Kinetic KTD2026/2027 LED leds: core: Add more colors from DT bindings to led_colors dt-bindings: leds: Last color ID is now 14 (LED_COLOR_ID_LIME) leds: tca6507: Don't use fixed GPIO base leds: lp3952: Convert to use maple tree register cache leds: lm392x: Convert to use maple tree register cache leds: aw200xx: Convert to use maple tree register cache leds: lm3601x: Convert to use maple tree register cache ... -
git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlightLinus Torvalds authored
Pull backlight updates from Lee Jones: "New Functionality: - Add new Device Tree binding for Monolithic Power (MPS) MP3309C step-up converter - Document brightness-levels in bindings for; generic, LED and PWM Bug Fixes: - Ensure PWMs are disabled on .shutdown(), .suspend() and .remove()" * tag 'backlight-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: dt-bindings: backlight: Add brightness-levels related common properties backlight: pwm_bl: Disable PWM on shutdown, suspend and remove dt-bindings: backlight: Add MPS MP3309C -
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfdLinus Torvalds authored
Pull MFD updates from Lee Jones: "Core Frameworks: - Allow all MFD Cell properties to be filled in dynamically at runtime - Skip disabled device nodes and continue to look for subsequent devices New Device Support: - Add support for Lunar Lake-M PCI to Intel LPSS PCI - Add support for Denverton to Intel ICH LPC New Functionality: - Add support for Clocks to Texas Instruments TWL* Core - Add support for Interrupts to STMicroelectronics STM32 Timers Fix-ups: - Convert to new devm-* (managed) power-off API - Remove superfluous code - Bunch of Device Tree additions, conversions and adaptions - Simplify obtaining resources (memory, device data) using unified API helpers - Trivial coding-style / spelling type clean-ups - Constify / staticify changes - Expand or edit on existing documentation - Convert some Regmap configurations to use the Maple Tree cache - Apply new __counted_by() annotation to several data structures containing flexible arrays - Replace strncpy() with strscpy() Bug Fixes: - Remove double put creating reference imbalances - Ensure headphone/lineout detection gets set when booting with ACPI" * tag 'mfd-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (73 commits) mfd: lpc_ich: Mark *_gpio_offsets data with const spmi: rename spmi device lookup helper spmi: document spmi_device_from_of() refcounting dt-bindings: mfd: armltd: Move Arm board syscon's to separate schema mfd: rk8xx: Add support for RK806 power off mfd: rk8xx: Add support for standard system-power-controller property dt-bindings: mfd: rk806: Allow system-power-controller property dt-bindings: mfd: rk8xx: Deprecate rockchip,system-power-controller dt-bindings: mfd: max8925: Convert to DT schema format mfd: Use i2c_get_match_data() in a selection of drivers mfd: Use device_get_match_data() in a bunch of drivers mfd: mc13xxx-spi/wm831x-spi: Use spi_get_device_match_data() mfd: motorola-cpcap: Drop unnecessary of_match_device() call mfd: arizona-spi: Set pdata.hpdet_channel for ACPI enumerated devs mfd: qcom-spmi-pmic: Switch to EXPORT_SYMBOL_GPL() mfd: qcom-spmi-pmic: Fix revid implementation mfd: qcom-spmi-pmic: Fix reference leaks in revid helper mfd: intel-m10-bmc: Change contact for ABI docs mfd: max8907: Convert to use maple tree register cache mfd: max77686: Convert to use maple tree register cache ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound updates from Takashi Iwai: "Most of changes at this time are for ASoC, spread over ASoC core and drivers due to the API prefix standardization. Other than that, there have little change wrt API, rather lots of driver-specific updates and fixes. Some highlight below: ASoC: - Standardization of API prefix - GPIO API usage improvements - Support for HDA patches - Lots of work on SOF, including crash dump support - Fixes for noise when stopping some Sounwire CODECs - Support for AMD platforms with es83xx, AMD ACP 6.3 and 7.0, Awinc AT87390 and AW88399, many Intel platforms, many Mediatek platforms, Qualcomm SM6115 and SC7180 platforms, Richtek RTQ9128 and Texas Instruments TAS575x HD-audio and USB-audio: - Deferred probe support of audio component binding - More fixes and enhancements for Cirrus subcodecs - USB Scarlett2 mixer and McIntosh DSD quirk Others: - More enhancement of snd-aloop driver - Update MAINTAINERS entry for linux-sound mailing list" * tag 'sound-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (485 commits) ALSA: hda: cs35l41: Fix missing error code in cs35l41_smart_amp() ALSA: hda: cs35l41: mark cs35l41_verify_id() static ASoC: codecs: wsa883x: make use of new mute_unmute_on_trigger flag ASoC: soc-dai: add flag to mute and unmute stream during trigger ASoC: ams-delta.c: use component after check ASoC: amd: acp: select SND_SOC_AMD_ACP_LEGACY_COMMON for ACP63 ASoC: codecs: aw88399: fix typo in Kconfig select ASoC: amd: acp: add ACPI dependency ASoC: Intel: avs: Add rt5514 machine board ASoC: Intel: avs: Add rt5514 machine board ALSA: scarlett2: Add missing check with firmware version control ALSA: virtio: use ack callback ALSA: scarlett2: Remap Level Meter values ALSA: scarlett2: Allow passing any output to line_out_remap() ALSA: scarlett2: Add support for reading firmware version ALSA: scarlett2: Rename Gen 3 config sets ALSA: scarlett2: Rename scarlett_gen2 to scarlett2 ASoC: cs35l41: Detect CSPL errors when sending CSPL commands ALSA: hda: cs35l41: Check CSPL state after loading firmware ALSA: hda: cs35l41: Do not unload firmware before reset in system suspend ...
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