- 27 Nov, 2019 17 commits
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Peter Zijlstra authored
Rework event_create_dir() to use an array of static data instead of function pointers where possible. The problem is that it would call the function pointer on module load before parse_args(), possibly even before jump_labels were initialized. Luckily the generated functions don't use jump_labels but it still seems fragile. It also gets in the way of changing when we make the module map executable. The generated function are basically calling trace_define_field() with a bunch of static arguments. So instead of a function, capture these arguments in a static array, avoiding the function call. Now there are a number of cases where the fields are dynamic (syscall arguments, kprobes and uprobes), in which case a static array does not work, for these we preserve the function call. Luckily all these cases are not related to modules and so we can retain the function call for them. Also fix up all broken tracepoint definitions that now generate a compile error. Tested-by:
Alexei Starovoitov <ast@kernel.org> Tested-by:
Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by:
Ingo Molnar <mingo@kernel.org>
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Peter Zijlstra authored
Now that there are no users of set_all_modules_text_*() left, remove it. While it appears nds32 uses it, it does not have STRICT_MODULE_RWX and therefore ends up with the NOP stubs. Tested-by:
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Peter Zijlstra authored
Instead of flipping text protection, use the patch_text infrastructure that uses a fixmap alias where required. This removes the last user of set_all_modules_text_*(). Tested-by:
Will Deacon <will@kernel.org> Signed-off-by:
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Peter Zijlstra authored
Kprobes does something like: register: arch_arm_kprobe() text_poke(INT3) /* guarantees nothing, INT3 will become visible at some point, maybe */ kprobe_optimizer() /* guarantees the bytes after INT3 are unused */ synchronize_rcu_tasks(); text_poke_bp(JMP32); /* implies IPI-sync, kprobe really is enabled */ unregister: __disarm_kprobe() unoptimize_kprobe() text_poke_bp(INT3 + tail); /* implies IPI-sync, so tail is guaranteed visible */ arch_disarm_kprobe() text_poke(old); /* guarantees nothing, old will maybe become visible */ synchronize_rcu() free-stuff Now the problem is that on register, the synchronize_rcu_tasks() does not imply sufficient to guarantee all CPUs have already observed INT3 (although in practice this is exceedingly unlikely not to have happened) (similar to how MEMBARRIER_CMD_PRIVATE_EXPEDITED does not imply MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE). Worse, even if it did, we'd have to do 2 synchronize calls to provide the guarantee we're looking for, the first to ensure INT3 is visible, the second to guarantee nobody is then still using the instruction bytes after INT3. Similar on unregister; the synchronize_rcu() between __unregister_kprobe_top() and __unregister_kprobe_bottom() does not guarantee all CPUs are free of the INT3 (and observe the old text). Therefore, sprinkle some IPI-sync love around. This guarantees that all CPUs agree on the text and RCU once again provides the required guaranteed. Tested-by:Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Acked-by:
Masami Hiramatsu <mhiramat@kernel.org> Acked-by:
Paul E. McKenney <paulmck@kernel.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20191111132458.162172862@infradead.orgSigned-off-by:
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Peter Zijlstra authored
Convert kprobes to the new text-poke naming. Tested-by:
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Borislav Petkov authored
... because it calls the .init.text function text_poke_early(). That is ok because it does call that function early, during boot. Fixes: 9706f7c3531f ("x86/ftrace: Use text_poke()") Suggested-by:Borislav Petkov <bp@suse.de> Acked-by:
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Peter Zijlstra authored
Employ the fact that all text must be within a s32 displacement of one another to shrink the text_poke_loc::addr field. Make it relative to _stext. This then shrinks struct text_poke_loc to 16 bytes, and consequently increases TP_VEC_MAX from 170 to 256. Tested-by:
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Peter Zijlstra authored
Per the BUG_ON(len != insn.length) in text_poke_loc_init(), tp->len must indeed be the same as text_opcode_size(tp->opcode). Use this to remove this field from the structure. Sadly, due to 8 byte alignment, this only increases the structure padding. Tested-by:
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Peter Zijlstra authored
Replace the ftrace_code_union with the generic text_gen_insn() helper, which does exactly this. Tested-by:
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Peter Zijlstra authored
Introduce a common helper to map *_INSN_OPCODE to *_INSN_SIZE. Tested-by:
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Peter Zijlstra authored
With the last and only user of these functions gone (ftrace) remove them as well to avoid ever growing new users. Tested-by:
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Peter Zijlstra authored
Move ftrace over to using the generic x86 text_poke functions; this avoids having a second/different copy of that code around. This also avoids ftrace violating the (new) W^X rule and avoids fragmenting the kernel text page-tables, due to no longer having to toggle them RW. Tested-by:
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Peter Zijlstra authored
Provide a simple helper function to create common instruction encodings. Tested-by:
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Peter Zijlstra authored
Adding another text_poke_bp_batch() user made me realize the interface is all sorts of wrong. The text poke vector should be internal to the implementation. This then results in a trivial interface: text_poke_queue() - which has the 'normal' text_poke_bp() interface text_poke_finish() - which takes no arguments and flushes any pending text_poke()s. Tested-by:Daniel Bristot de Oliveira <bristot@redhat.com> Acked-by:
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Peter Zijlstra authored
Update the comment now that we've merged x86_32 support. Tested-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 merge fix from Ingo Molnar: "I missed one other semantic conflict that can result in build failures on certain stripped down x86 32-bit configs, for example 32-bit 'allnoconfig' where CONFIG_X86_IOPL_IOPERM gets turned off" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/iopl: Make 'struct tss_struct' constant size again
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking updates from Ingo Molnar: "The main changes in this cycle were: - A comprehensive rewrite of the robust/PI futex code's exit handling to fix various exit races. (Thomas Gleixner et al) - Rework the generic REFCOUNT_FULL implementation using atomic_fetch_* operations so that the performance impact of the cmpxchg() loops is mitigated for common refcount operations. With these performance improvements the generic implementation of refcount_t should be good enough for everybody - and this got confirmed by performance testing, so remove ARCH_HAS_REFCOUNT and REFCOUNT_FULL entirely, leaving the generic implementation enabled unconditionally. (Will Deacon) - Other misc changes, fixes, cleanups" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits) lkdtm: Remove references to CONFIG_REFCOUNT_FULL locking/refcount: Remove unused 'refcount_error_report()' function locking/refcount: Consolidate implementations of refcount_t locking/refcount: Consolidate REFCOUNT_{MAX,SATURATED} definitions locking/refcount: Move saturation warnings out of line locking/refcount: Improve performance of generic REFCOUNT_FULL code locking/refcount: Move the bulk of the REFCOUNT_FULL implementation into the <linux/refcount.h> header locking/refcount: Remove unused refcount_*_checked() variants locking/refcount: Ensure integer operands are treated as signed locking/refcount: Define constants for saturation and max refcount values futex: Prevent exit livelock futex: Provide distinct return value when owner is exiting futex: Add mutex around futex exit futex: Provide state handling for exec() as well futex: Sanitize exit state handling futex: Mark the begin of futex exit explicitly futex: Set task::futex_state to DEAD right after handling futex exit futex: Split futex_mm_release() for exit/exec exit/exec: Seperate mm_release() futex: Replace PF_EXITPIDONE with a state ...
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- 26 Nov, 2019 23 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull RCU updates from Ingo Molnar: "The main changes in this cycle were: - Dynamic tick (nohz) updates, perhaps most notably changes to force the tick on when needed due to lengthy in-kernel execution on CPUs on which RCU is waiting. - Linux-kernel memory consistency model updates. - Replace rcu_swap_protected() with rcu_prepace_pointer(). - Torture-test updates. - Documentation updates. - Miscellaneous fixes" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits) security/safesetid: Replace rcu_swap_protected() with rcu_replace_pointer() net/sched: Replace rcu_swap_protected() with rcu_replace_pointer() net/netfilter: Replace rcu_swap_protected() with rcu_replace_pointer() net/core: Replace rcu_swap_protected() with rcu_replace_pointer() bpf/cgroup: Replace rcu_swap_protected() with rcu_replace_pointer() fs/afs: Replace rcu_swap_protected() with rcu_replace_pointer() drivers/scsi: Replace rcu_swap_protected() with rcu_replace_pointer() drm/i915: Replace rcu_swap_protected() with rcu_replace_pointer() x86/kvm/pmu: Replace rcu_swap_protected() with rcu_replace_pointer() rcu: Upgrade rcu_swap_protected() to rcu_replace_pointer() rcu: Suppress levelspread uninitialized messages rcu: Fix uninitialized variable in nocb_gp_wait() rcu: Update descriptions for rcu_future_grace_period tracepoint rcu: Update descriptions for rcu_nocb_wake tracepoint rcu: Remove obsolete descriptions for rcu_barrier tracepoint rcu: Ensure that ->rcu_urgent_qs is set before resched IPI workqueue: Convert for_each_wq to use built-in list check rcu: Several rcu_segcblist functions can be static rcu: Remove unused function hlist_bl_del_init_rcu() Documentation: Rename rcu_node_context_switch() to rcu_note_context_switch() ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler updates from Ingo Molnar: "The biggest changes in this cycle were: - Make kcpustat vtime aware (Frederic Weisbecker) - Rework the CFS load_balance() logic (Vincent Guittot) - Misc cleanups, smaller enhancements, fixes. The load-balancing rework is the most intrusive change: it replaces the old heuristics that have become less meaningful after the introduction of the PELT metrics, with a grounds-up load-balancing algorithm. As such it's not really an iterative series, but replaces the old load-balancing logic with the new one. We hope there are no performance regressions left - but statistically it's highly probable that there *is* going to be some workload that is hurting from these chnages. If so then we'd prefer to have a look at that workload and fix its scheduling, instead of reverting the changes" * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits) rackmeter: Use vtime aware kcpustat accessor leds: Use all-in-one vtime aware kcpustat accessor cpufreq: Use vtime aware kcpustat accessors for user time procfs: Use all-in-one vtime aware kcpustat accessor sched/vtime: Bring up complete kcpustat accessor sched/cputime: Support other fields on kcpustat_field() sched/cpufreq: Move the cfs_rq_util_change() call to cpufreq_update_util() sched/fair: Add comments for group_type and balancing at SD_NUMA level sched/fair: Fix rework of find_idlest_group() sched/uclamp: Fix overzealous type replacement sched/Kconfig: Fix spelling mistake in user-visible help text sched/core: Further clarify sched_class::set_next_task() sched/fair: Use mul_u32_u32() sched/core: Simplify sched_class::pick_next_task() sched/core: Optimize pick_next_task() sched/core: Make pick_next_task_idle() more consistent sched/fair: Better document newidle_balance() leds: Use vtime aware kcpustat accessor to fetch CPUTIME_SYSTEM cpufreq: Use vtime aware kcpustat accessor to fetch CPUTIME_SYSTEM procfs: Use vtime aware kcpustat accessor to fetch CPUTIME_SYSTEM ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf updates from Ingo Molnar: "The main kernel side changes in this cycle were: - Various Intel-PT updates and optimizations (Alexander Shishkin) - Prohibit kprobes on Xen/KVM emulate prefixes (Masami Hiramatsu) - Add support for LSM and SELinux checks to control access to the perf syscall (Joel Fernandes) - Misc other changes, optimizations, fixes and cleanups - see the shortlog for details. There were numerous tooling changes as well - 254 non-merge commits. Here are the main changes - too many to list in detail: - Enhancements to core tooling infrastructure, perf.data, libperf, libtraceevent, event parsing, vendor events, Intel PT, callchains, BPF support and instruction decoding. - There were updates to the following tools: perf annotate perf diff perf inject perf kvm perf list perf maps perf parse perf probe perf record perf report perf script perf stat perf test perf trace - And a lot of other changes: please see the shortlog and Git log for more details" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (279 commits) perf parse: Fix potential memory leak when handling tracepoint errors perf probe: Fix spelling mistake "addrees" -> "address" libtraceevent: Fix memory leakage in copy_filter_type libtraceevent: Fix header installation perf intel-bts: Does not support AUX area sampling perf intel-pt: Add support for decoding AUX area samples perf intel-pt: Add support for recording AUX area samples perf pmu: When using default config, record which bits of config were changed by the user perf auxtrace: Add support for queuing AUX area samples perf session: Add facility to peek at all events perf auxtrace: Add support for dumping AUX area samples perf inject: Cut AUX area samples perf record: Add aux-sample-size config term perf record: Add support for AUX area sampling perf auxtrace: Add support for AUX area sample recording perf auxtrace: Move perf_evsel__find_pmu() perf record: Add a function to test for kernel support for AUX area sampling perf tools: Add kernel AUX area sampling definitions perf/core: Make the mlock accounting simple again perf report: Jump to symbol source view from total cycles view ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI updates from Ingo Molnar: "The main changes in this cycle were: - Wire up the EFI RNG code for x86. This enables an additional source of entropy during early boot. - Enable the TPM event log code on ARM platforms. - Update Ard's email address" * 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi: libstub/tpm: enable tpm eventlog function for ARM platforms x86: efi/random: Invoke EFI_RNG_PROTOCOL to seed the UEFI RNG table efi/random: use arch-independent efi_call_proto() MAINTAINERS: update Ard's email address to @kernel.org -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull stacktrace cleanup from Ingo Molnar: "A minor cleanup" * 'core-stacktrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: stacktrace: Get rid of unneeded '!!' pattern
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Ingo Molnar authored
After the following commit: 05b042a1: ("x86/pti/32: Calculate the various PTI cpu_entry_area sizes correctly, make the CPU_ENTRY_AREA_PAGES assert precise") 'struct cpu_entry_area' has to be Kconfig invariant, so that we always have a matching CPU_ENTRY_AREA_PAGES size. This commit added a CONFIG_X86_IOPL_IOPERM dependency to tss_struct: 111e7b15: ("x86/ioperm: Extend IOPL config to control ioperm() as well") Which, if CONFIG_X86_IOPL_IOPERM is turned off, reduces the size of cpu_entry_area by two pages, triggering the assert: ./include/linux/compiler.h:391:38: error: call to ‘__compiletime_assert_202’ declared with attribute error: BUILD_BUG_ON failed: (CPU_ENTRY_AREA_PAGES+1)*PAGE_SIZE != CPU_ENTRY_AREA_MAP_SIZE Simplify the Kconfig dependencies and make cpu_entry_area constant size on 32-bit kernels again. Fixes: 05b042a1: ("x86/pti/32: Calculate the various PTI cpu_entry_area sizes correctly, make the CPU_ENTRY_AREA_PAGES assert precise") Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Signed-off-by:
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Linus Torvalds authored
This reverts commit 0be0ee71. I was hoping it would be benign to switch over entirely to FMODE_STREAM, and we'd have just a couple of small fixups we'd need, but it looks like we're not quite there yet. While it worked fine on both my desktop and laptop, they are fairly similar in other respects, and run mostly the same loads. Kenneth Crudup reports that it seems to break both his vmware installation and the KDE upower service. In both cases apparently leading to timeouts due to waitinmg for the f_pos lock. There are a number of character devices in particular that definitely want stream-like behavior, but that currently don't get marked as streams, and as a result get the exclusion between concurrent read()/write() on the same file descriptor. Which doesn't work well for them. The most obvious example if this is /dev/console and /dev/tty, which use console_fops and tty_fops respectively (and ptmx_fops for the pty master side). It may be that it's just this that causes problems, but we clearly weren't ready yet. Because there's a number of other likely common cases that don't have llseek implementations and would seem to act as stream devices: /dev/fuse (fuse_dev_operations) /dev/mcelog (mce_chrdev_ops) /dev/mei0 (mei_fops) /dev/net/tun (tun_fops) /dev/nvme0 (nvme_dev_fops) /dev/tpm0 (tpm_fops) /proc/self/ns/mnt (ns_file_operations) /dev/snd/pcm* (snd_pcm_f_ops[]) and while some of these could be trivially automatically detected by the vfs layer when the character device is opened by just noticing that they have no read or write operations either, it often isn't that obvious. Some character devices most definitely do use the file position, even if they don't allow seeking: the firmware update code, for example, uses simple_read_from_buffer() that does use f_pos, but doesn't allow seeking back and forth. We'll revisit this when there's a better way to detect the problem and fix it (possibly with a coccinelle script to do more of the FMODE_STREAM annotations). Reported-by:
Kenneth R. Crudup <kenny@panix.com> Cc: Kirill Smelkov <kirr@nexedi.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 iopl updates from Ingo Molnar: "This implements a nice simplification of the iopl and ioperm code that Thomas Gleixner discovered: we can implement the IO privilege features of the iopl system call by using the IO permission bitmap in permissive mode, while trapping CLI/STI/POPF/PUSHF uses in user-space if they change the interrupt flag. This implements that feature, with testing facilities and related cleanups" [ "Simplification" may be an over-statement. The main goal is to avoid the cli/sti of iopl by effectively implementing the IO port access parts of iopl in terms of ioperm. This may end up not workign well in case people actually depend on cli/sti being available, or if there are mixed uses of iopl and ioperm. We will see.. - Linus ] * 'x86-iopl-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits) x86/ioperm: Fix use of deprecated config option x86/entry/32: Clarify register saving in __switch_to_asm() selftests/x86/iopl: Extend test to cover IOPL emulation x86/ioperm: Extend IOPL config to control ioperm() as well x86/iopl: Remove legacy IOPL option x86/iopl: Restrict iopl() permission scope x86/iopl: Fixup misleading comment selftests/x86/ioperm: Extend testing so the shared bitmap is exercised x86/ioperm: Share I/O bitmap if identical x86/ioperm: Remove bitmap if all permissions dropped x86/ioperm: Move TSS bitmap update to exit to user work x86/ioperm: Add bitmap sequence number x86/ioperm: Move iobitmap data into a struct x86/tss: Move I/O bitmap data into a seperate struct x86/io: Speedup schedule out of I/O bitmap user x86/ioperm: Avoid bitmap allocation if no permissions are set x86/ioperm: Simplify first ioperm() invocation logic x86/iopl: Cleanup include maze x86/tss: Fix and move VMX BUILD_BUG_ON() x86/cpu: Unify cpu_init() ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 asm updates from Ingo Molnar: "The main changes in this cycle were: - Cross-arch changes to move the linker sections for NOTES and EXCEPTION_TABLE into the RO_DATA area, where they belong on most architectures. (Kees Cook) - Switch the x86 linker fill byte from x90 (NOP) to 0xcc (INT3), to trap jumps into the middle of those padding areas instead of sliding execution. (Kees Cook) - A thorough cleanup of symbol definitions within x86 assembler code. The rather randomly named macros got streamlined around a (hopefully) straightforward naming scheme: SYM_START(name, linkage, align...) SYM_END(name, sym_type) SYM_FUNC_START(name) SYM_FUNC_END(name) SYM_CODE_START(name) SYM_CODE_END(name) SYM_DATA_START(name) SYM_DATA_END(name) etc - with about three times of these basic primitives with some label, local symbol or attribute variant, expressed via postfixes. No change in functionality intended. (Jiri Slaby) - Misc other changes, cleanups and smaller fixes" * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (67 commits) x86/entry/64: Remove pointless jump in paranoid_exit x86/entry/32: Remove unused resume_userspace label x86/build/vdso: Remove meaningless CFLAGS_REMOVE_*.o m68k: Convert missed RODATA to RO_DATA x86/vmlinux: Use INT3 instead of NOP for linker fill bytes x86/mm: Report actual image regions in /proc/iomem x86/mm: Report which part of kernel image is freed x86/mm: Remove redundant address-of operators on addresses xtensa: Move EXCEPTION_TABLE to RO_DATA segment powerpc: Move EXCEPTION_TABLE to RO_DATA segment parisc: Move EXCEPTION_TABLE to RO_DATA segment microblaze: Move EXCEPTION_TABLE to RO_DATA segment ia64: Move EXCEPTION_TABLE to RO_DATA segment h8300: Move EXCEPTION_TABLE to RO_DATA segment c6x: Move EXCEPTION_TABLE to RO_DATA segment arm64: Move EXCEPTION_TABLE to RO_DATA segment alpha: Move EXCEPTION_TABLE to RO_DATA segment x86/vmlinux: Move EXCEPTION_TABLE to RO_DATA segment x86/vmlinux: Actually use _etext for the end of the text segment vmlinux.lds.h: Allow EXCEPTION_TABLE to live in RO_DATA ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "These are the fixes left over from the v5.4 cycle: - Various low level 32-bit entry code fixes and improvements by Andy Lutomirski, Peter Zijlstra and Thomas Gleixner. - Fix 32-bit Xen PV breakage, by Jan Beulich" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/entry/32: Fix FIXUP_ESPFIX_STACK with user CR3 x86/pti/32: Calculate the various PTI cpu_entry_area sizes correctly, make the CPU_ENTRY_AREA_PAGES assert precise selftests/x86/sigreturn/32: Invalidate DS and ES when abusing the kernel selftests/x86/mov_ss_trap: Fix the SYSENTER test x86/entry/32: Fix NMI vs ESPFIX x86/entry/32: Unwind the ESPFIX stack earlier on exception entry x86/entry/32: Move FIXUP_FRAME after pushing %fs in SAVE_ALL x86/entry/32: Use %ss segment where required x86/entry/32: Fix IRET exception x86/cpu_entry_area: Add guard page for entry stack on 32bit x86/pti/32: Size initial_page_table correctly x86/doublefault/32: Fix stack canaries in the double fault handler x86/xen/32: Simplify ring check in xen_iret_crit_fixup() x86/xen/32: Make xen_iret_crit_fixup() independent of frame layout x86/stackframe/32: Repair 32-bit Xen PV -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 PTI updates from Ingo Molnar: "Fix reporting bugs of the MDS and TAA mitigation status, if one or both are set via a boot option. No change to mitigation behavior intended" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/speculation: Fix redundant MDS mitigation message x86/speculation: Fix incorrect MDS/TAA mitigation status
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 platform updates from Ingo Molnar: "UV platform updates (with a 'hubless' variant) and Jailhouse updates for better UART support" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/jailhouse: Only enable platform UARTs if available x86/jailhouse: Improve setup data version comparison x86/platform/uv: Account for UV Hubless in is_uvX_hub Ops x86/platform/uv: Check EFI Boot to set reboot type x86/platform/uv: Decode UVsystab Info x86/platform/uv: Add UV Hubbed/Hubless Proc FS Files x86/platform/uv: Setup UV functions for Hubless UV Systems x86/platform/uv: Add return code to UV BIOS Init function x86/platform/uv: Return UV Hubless System Type x86/platform/uv: Save OEM_ID from ACPI MADT probe
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 mm updates from Ingo Molnar: "The main changes in this cycle were: - A PAT series from Davidlohr Bueso, which simplifies the memtype rbtree by using the interval tree helpers. (There's more cleanups in this area queued up, but they didn't make the merge window.) - Also flip over CONFIG_X86_5LEVEL to default-y. This might draw in a few more testers, as all the major distros are going to have 5-level paging enabled by default in their next iterations. - Misc cleanups" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm/pat: Rename pat_rbtree.c to pat_interval.c x86/mm/pat: Drop the rbt_ prefix from external memtype calls x86/mm/pat: Do not pass 'rb_root' down the memtype tree helper functions x86/mm/pat: Convert the PAT tree to a generic interval tree x86/mm: Clean up the pmd_read_atomic() comments x86/mm: Fix function name typo in pmd_read_atomic() comment x86/cpu: Clean up intel_tlb_table[] x86/mm: Enable 5-level paging support by default -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 kdump updates from Ingo Molnar: "This solves a kdump artifact where encrypted memory contents are dumped, instead of unencrypted ones. The solution also happens to simplify the kdump code, to everyone's delight" * 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/crash: Align function arguments on opening braces x86/kdump: Remove the backup region handling x86/kdump: Always reserve the low 1M when the crashkernel option is specified x86/crash: Add a forward declaration of struct kimage
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 hyperv updates from Ingo Molnar: "Misc updates to the hyperv guest code: - Rework clockevents initialization to better support hibernation - Allow guests to enable InvariantTSC - Micro-optimize send_ipi_one" * 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/hyperv: Initialize clockevents earlier in CPU onlining x86/hyperv: Allow guests to enable InvariantTSC x86/hyperv: Micro-optimize send_ipi_one()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 syscall entry updates from Ingo Molnar: "These changes relate to the preparatory cleanup of syscall function type signatures - to fix indirect call mismatches with Control-Flow Integrity (CFI) checking. No change in behavior intended" * 'x86-entry-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Use the correct function type for native_set_fixmap() syscalls/x86: Fix function types in COND_SYSCALL syscalls/x86: Use the correct function type for sys_ni_syscall syscalls/x86: Use COMPAT_SYSCALL_DEFINE0 for IA32 (rt_)sigreturn syscalls/x86: Wire up COMPAT_SYSCALL_DEFINE0 syscalls/x86: Use the correct function type in SYSCALL_DEFINE0
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Linus Torvalds authored
Merge branches 'x86-cpu-for-linus' and 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 cpu and fpu updates from Ingo Molnar: - math-emu fixes - CPUID updates - sanity-check RDRAND output to see whether the CPU at least pretends to produce random data - various unaligned-access across cachelines fixes in preparation of hardware level split-lock detection - fix MAXSMP constraints to not allow !CPUMASK_OFFSTACK kernels with larger than 512 NR_CPUS - misc FPU related cleanups * 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Align the x86_capability array to size of unsigned long x86/cpu: Align cpu_caps_cleared and cpu_caps_set to unsigned long x86/umip: Make the comments vendor-agnostic x86/Kconfig: Rename UMIP config parameter x86/Kconfig: Enforce limit of 512 CPUs with MAXSMP and no CPUMASK_OFFSTACK x86/cpufeatures: Add feature bit RDPRU on AMD x86/math-emu: Limit MATH_EMULATION to 486SX compatibles x86/math-emu: Check __copy_from_user() result x86/rdrand: Sanity-check RDRAND output * 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/fpu: Use XFEATURE_FP/SSE enum values instead of hardcoded numbers x86/fpu: Shrink space allocated for xstate_comp_offsets x86/fpu: Update stale variable name in comment
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 boot updates from Ingo Molnar: "The main changes were: - Extend the boot protocol to allow future extensions without hitting the setup_header size limit. - Add quirk to devicetree systems to disable the RTC unless it's listed as a supported device. - Fix ld.lld linker pedantry" * 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/boot: Introduce setup_indirect x86/boot: Introduce kernel_info.setup_type_max x86/boot: Introduce kernel_info x86/init: Allow DT configured systems to disable RTC at boot time x86/realmode: Explicitly set entry point via ENTRY in linker script -
Linus Torvalds authored
Merge branches 'core-objtool-for-linus', 'x86-cleanups-for-linus' and 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 objtool, cleanup, and apic updates from Ingo Molnar: "Objtool: - Fix a gawk 5.0 incompatibility in gen-insn-attr-x86.awk. Most distros are still on gawk 4.2.x. Cleanup: - Misc cleanups, plus the removal of obsolete code such as Calgary IOMMU support, which code hasn't seen any real testing in a long time and there's no known users left. apic: - Two changes: a cleanup and a fix for an (old) race for oneshot threaded IRQ handlers" * 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/insn: Fix awk regexp warnings * 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Remove unused asm/rio.h x86: Fix typos in comments x86/pci: Remove #ifdef __KERNEL__ guard from <asm/pci.h> x86/pci: Remove pci_64.h x86: Remove the calgary IOMMU driver x86/apic, x86/uprobes: Correct parameter names in kernel-doc comments x86/kdump: Remove the unused crash_copy_backup_region() x86/nmi: Remove stale EDAC include leftover * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ioapic: Rename misnamed functions x86/ioapic: Prevent inconsistent state when moving an interrupt
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git://github.com/cminyard/linux-ipmiLinus Torvalds authored
Pull IPMI updates from Corey Minyard: "Some small fixes accumulated for IPMI, nothing major" * tag 'for-linus-5.5-1' of git://github.com/cminyard/linux-ipmi: ipmi: fix ipmb_poll()'s return type ipmi: kill off 'timespec' usage again drivers: ipmi: Support for both IPMB Req and Resp ipmi: Fix memory leak in __ipmi_bmc_register ipmi: bt-bmc: use devm_platform_ioremap_resource() to simplify code ipmi: use %*ph to print small buffer ipmi: Don't allow device module unload when in use
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git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxLinus Torvalds authored
Pull i3c updates from Boris Brezillon: "Minor fixes and MAINTAINERS updates" * tag 'i3c/for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: MAINTAINERS: add myself as maintainer of Cadence I3C master controller driver MAINTAINERS: Mark linux-i3c mailing list moderated i3c: Spelling s/dicovered/discovered/ i3c: master: use i3c_dev_get_master()
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git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linuxLinus Torvalds authored
Pull pcmcia updates from Dominik Brodowski: "Just a few odd fixes and improvements to the PCMCIA core" * 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux: pcmcia: remove unused dprintk definition pcmcia: include <pcmcia/ds.h> for pcmcia_parse_tuple pcmcia: include cs_internal.h for missing declarations pcmcia: Use dev_get_drvdata where possible pcmcia: clean an indentation issues, remove extraneous spaces
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spiLinus Torvalds authored
Pull spi updates from Mark Brown: "Lots of stuff going on in the core for SPI this time around, the two big changes both being around time in different forms: - A rework of delay times from Alexandru Ardelean which makes the ways in which they are specified more consistent between drivers so that what's available to clients is less dependent on the hardware implementation. - Support for PTP timestamping of transfers from Vladimir Oltean, useful for use with precision clocks with SPI control interfaces. - Big cleanups for the Atmel, PXA2xx and Zynq QSPI drivers" * tag 'spi-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (119 commits) dt-bindings: spi: Convert stm32 QSPI bindings to json-schema spi: pic32: Retire dma_request_slave_channel_compat() spi: Fix Kconfig indentation spi: mediatek: add SPI_CS_HIGH support spi: st-ssc4: add missed pm_runtime_disable spi: tegra20-slink: add missed clk_unprepare spi: tegra20-slink: Use dma_request_chan() directly for channel request spi: tegra114: Use dma_request_chan() directly for channel request spi: s3c64xx: Use dma_request_chan() directly for channel request spi: qup: Use dma_request_chan() directly for channel request spi: pl022: Use dma_request_chan() directly for channel request spi: imx: Use dma_request_chan() directly for channel request spi: fsl-lpspi: Use dma_request_chan() directly for channel request spi: atmel: Use dma_request_chan() directly for channel request spi: at91-usart: Use dma_request_chan() directly for channel request spi: fsl-cpm: Correct the free:ing spi: Fix regression to return zero on success instead of positive value spi: pxa2xx: Add missed security checks spi: nxp-fspi: Use devm API to fix missed unregistration of controller spi: omap2-mcspi: Remove redundant checks ...
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