aboutsummaryrefslogtreecommitdiff
path: root/tools
AgeCommit message (Collapse)AuthorFilesLines
2021-06-29Merge tag 'x86-entry-2021-06-29' of ↵Linus Torvalds1-49/+442
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 entry code related updates from Thomas Gleixner: - Consolidate the macros for .byte ... opcode sequences - Deduplicate register offset defines in include files - Simplify the ia32,x32 compat handling of the related syscall tables to get rid of #ifdeffery. - Clear all EFLAGS which are not required for syscall handling - Consolidate the syscall tables and switch the generation over to the generic shell script and remove the CFLAGS tweaks which are not longer required. - Use 'int' type for system call numbers to match the generic code. - Add more selftests for syscalls * tag 'x86-entry-2021-06-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/syscalls: Don't adjust CFLAGS for syscall tables x86/syscalls: Remove -Wno-override-init for syscall tables x86/uml/syscalls: Remove array index from syscall initializers x86/syscalls: Clear 'offset' and 'prefix' in case they are set in env x86/entry: Use int everywhere for system call numbers x86/entry: Treat out of range and gap system calls the same x86/entry/64: Sign-extend system calls on entry to int selftests/x86/syscall: Add tests under ptrace to syscall_numbering_64 selftests/x86/syscall: Simplify message reporting in syscall_numbering selftests/x86/syscall: Update and extend syscall_numbering_64 x86/syscalls: Switch to generic syscallhdr.sh x86/syscalls: Use __NR_syscalls instead of __NR_syscall_max x86/unistd: Define X32_NR_syscalls only for 64-bit kernel x86/syscalls: Stop filling syscall arrays with *_sys_ni_syscall x86/syscalls: Switch to generic syscalltbl.sh x86/entry/x32: Rename __x32_compat_sys_* to __x64_compat_sys_*
2021-06-29Merge tag 'x86-irq-2021-06-29' of ↵Linus Torvalds1-2/+5
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 interrupt related updates from Thomas Gleixner: - Consolidate the VECTOR defines and the usage sites. - Cleanup GDT/IDT related code and replace open coded ASM with proper native helper functions. * tag 'x86-irq-2021-06-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/kexec: Set_[gi]dt() -> native_[gi]dt_invalidate() in machine_kexec_*.c x86: Add native_[ig]dt_invalidate() x86/idt: Remove address argument from idt_invalidate() x86/irq: Add and use NR_EXTERNAL_VECTORS and NR_SYSTEM_VECTORS x86/irq: Remove unused vectors defines
2021-06-29Merge tag 'printk-for-5.14' of ↵Linus Torvalds3-1/+6
git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux Pull printk updates from Petr Mladek: - Add %pt[RT]s modifier to vsprintf(). It overrides ISO 8601 separator by using ' ' (space). It produces "YYYY-mm-dd HH:MM:SS" instead of "YYYY-mm-ddTHH:MM:SS". - Correctly parse long row of numbers by sscanf() when using the field width. Add extensive sscanf() selftest. - Generalize re-entrant CPU lock that has already been used to serialize dump_stack() output. It is part of the ongoing printk rework. It will allow to remove the obsoleted printk_safe buffers and introduce atomic consoles. - Some code clean up and sparse warning fixes. * tag 'printk-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: printk: fix cpu lock ordering lib/dump_stack: move cpu lock to printk.c printk: Remove trailing semicolon in macros random32: Fix implicit truncation warning in prandom_seed_state() lib: test_scanf: Remove pointless use of type_min() with unsigned types selftests: lib: Add wrapper script for test_scanf lib: test_scanf: Add tests for sscanf number conversion lib: vsprintf: Fix handling of number field widths in vsscanf lib: vsprintf: scanf: Negative number must have field width > 1 usb: host: xhci-tegra: Switch to use %ptTs nilfs2: Switch to use %ptTs kdb: Switch to use %ptTs lib/vsprintf: Allow to override ISO 8601 date and time separator
2021-06-28Merge branch 'for-linus' of ↵Linus Torvalds5-0/+171
git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace Pull user namespace rlimit handling update from Eric Biederman: "This is the work mainly by Alexey Gladkov to limit rlimits to the rlimits of the user that created a user namespace, and to allow users to have stricter limits on the resources created within a user namespace." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: cred: add missing return error code when set_cred_ucounts() failed ucounts: Silence warning in dec_rlimit_ucounts ucounts: Set ucount_max to the largest positive value the type can hold kselftests: Add test to check for rlimit changes in different user namespaces Reimplement RLIMIT_MEMLOCK on top of ucounts Reimplement RLIMIT_SIGPENDING on top of ucounts Reimplement RLIMIT_MSGQUEUE on top of ucounts Reimplement RLIMIT_NPROC on top of ucounts Use atomic_t for ucounts reference counting Add a reference to ucounts for each cred Increase size of ucounts to atomic_long_t
2021-06-28Merge tag 'seccomp-v5.14-rc1' of ↵Linus Torvalds2-6/+55
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull seccomp updates from Kees Cook: - Add "atomic addfd + send reply" mode to SECCOMP_USER_NOTIF to better handle EINTR races visible to seccomp monitors. (Rodrigo Campos, Sargun Dhillon) - Improve seccomp selftests for readability in CI systems. (Kees Cook) * tag 'seccomp-v5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: selftests/seccomp: Avoid using "sysctl" for report selftests/seccomp: Flush benchmark output selftests/seccomp: More closely track fds being assigned selftests/seccomp: Add test for atomic addfd+send seccomp: Support atomic "addfd + send reply"
2021-06-28Merge tag 'docs-5.14' of git://git.lwn.net/linuxLinus Torvalds1-1/+1
Pull documentation updates from Jonathan Corbet: "This was a reasonably active cycle for documentation; this includes: - Some kernel-doc cleanups. That script is still regex onslaught from hell, but it has gotten a little better. - Improvements to the checkpatch docs, which are also used by the tool itself. - A major update to the pathname lookup documentation. - Elimination of :doc: markup, since our automarkup magic can create references from filenames without all the extra noise. - The flurry of Chinese translation activity continues. Plus, of course, the usual collection of updates, typo fixes, and warning fixes" * tag 'docs-5.14' of git://git.lwn.net/linux: (115 commits) docs: path-lookup: use bare function() rather than literals docs: path-lookup: update symlink description docs: path-lookup: update get_link() ->follow_link description docs: path-lookup: update WALK_GET, WALK_PUT desc docs: path-lookup: no get_link() docs: path-lookup: update i_op->put_link and cookie description docs: path-lookup: i_op->follow_link replaced with i_op->get_link docs: path-lookup: Add macro name to symlink limit description docs: path-lookup: remove filename_mountpoint docs: path-lookup: update do_last() part docs: path-lookup: update path_mountpoint() part docs: path-lookup: update path_to_nameidata() part docs: path-lookup: update follow_managed() part docs: Makefile: Use CONFIG_SHELL not SHELL docs: Take a little noise out of the build process docs: x86: avoid using ReST :doc:`foo` markup docs: virt: kvm: s390-pv-boot.rst: avoid using ReST :doc:`foo` markup docs: userspace-api: landlock.rst: avoid using ReST :doc:`foo` markup docs: trace: ftrace.rst: avoid using ReST :doc:`foo` markup docs: trace: coresight: coresight.rst: avoid using ReST :doc:`foo` markup ...
2021-06-28Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds49-577/+3163
Pull kvm updates from Paolo Bonzini: "This covers all architectures (except MIPS) so I don't expect any other feature pull requests this merge window. ARM: - Add MTE support in guests, complete with tag save/restore interface - Reduce the impact of CMOs by moving them in the page-table code - Allow device block mappings at stage-2 - Reduce the footprint of the vmemmap in protected mode - Support the vGIC on dumb systems such as the Apple M1 - Add selftest infrastructure to support multiple configuration and apply that to PMU/non-PMU setups - Add selftests for the debug architecture - The usual crop of PMU fixes PPC: - Support for the H_RPT_INVALIDATE hypercall - Conversion of Book3S entry/exit to C - Bug fixes S390: - new HW facilities for guests - make inline assembly more robust with KASAN and co x86: - Allow userspace to handle emulation errors (unknown instructions) - Lazy allocation of the rmap (host physical -> guest physical address) - Support for virtualizing TSC scaling on VMX machines - Optimizations to avoid shattering huge pages at the beginning of live migration - Support for initializing the PDPTRs without loading them from memory - Many TLB flushing cleanups - Refuse to load if two-stage paging is available but NX is not (this has been a requirement in practice for over a year) - A large series that separates the MMU mode (WP/SMAP/SMEP etc.) from CR0/CR4/EFER, using the MMU mode everywhere once it is computed from the CPU registers - Use PM notifier to notify the guest about host suspend or hibernate - Support for passing arguments to Hyper-V hypercalls using XMM registers - Support for Hyper-V TLB flush hypercalls and enlightened MSR bitmap on AMD processors - Hide Hyper-V hypercalls that are not included in the guest CPUID - Fixes for live migration of virtual machines that use the Hyper-V "enlightened VMCS" optimization of nested virtualization - Bugfixes (not many) Generic: - Support for retrieving statistics without debugfs - Cleanups for the KVM selftests API" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (314 commits) KVM: x86: rename apic_access_page_done to apic_access_memslot_enabled kvm: x86: disable the narrow guest module parameter on unload selftests: kvm: Allows userspace to handle emulation errors. kvm: x86: Allow userspace to handle emulation errors KVM: x86/mmu: Let guest use GBPAGES if supported in hardware and TDP is on KVM: x86/mmu: Get CR4.SMEP from MMU, not vCPU, in shadow page fault KVM: x86/mmu: Get CR0.WP from MMU, not vCPU, in shadow page fault KVM: x86/mmu: Drop redundant rsvd bits reset for nested NPT KVM: x86/mmu: Optimize and clean up so called "last nonleaf level" logic KVM: x86: Enhance comments for MMU roles and nested transition trickiness KVM: x86/mmu: WARN on any reserved SPTE value when making a valid SPTE KVM: x86/mmu: Add helpers to do full reserved SPTE checks w/ generic MMU KVM: x86/mmu: Use MMU's role to determine PTTYPE KVM: x86/mmu: Collapse 32-bit PAE and 64-bit statements for helpers KVM: x86/mmu: Add a helper to calculate root from role_regs KVM: x86/mmu: Add helper to update paging metadata KVM: x86/mmu: Don't update nested guest's paging bitmasks if CR0.PG=0 KVM: x86/mmu: Consolidate reset_rsvds_bits_mask() calls KVM: x86/mmu: Use MMU role_regs to get LA57, and drop vCPU LA57 helper KVM: x86/mmu: Get nested MMU's root level from the MMU's role ...
2021-06-28Merge tag 'arm64-upstream' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Will Deacon: "There's a reasonable amount here and the juicy details are all below. It's worth noting that the MTE/KASAN changes strayed outside of our usual directories due to core mm changes and some associated changes to some other architectures; Andrew asked for us to carry these [1] rather that take them via the -mm tree. Summary: - Optimise SVE switching for CPUs with 128-bit implementations. - Fix output format from SVE selftest. - Add support for versions v1.2 and 1.3 of the SMC calling convention. - Allow Pointer Authentication to be configured independently for kernel and userspace. - PMU driver cleanups for managing IRQ affinity and exposing event attributes via sysfs. - KASAN optimisations for both hardware tagging (MTE) and out-of-line software tagging implementations. - Relax frame record alignment requirements to facilitate 8-byte alignment with KASAN and Clang. - Cleanup of page-table definitions and removal of unused memory types. - Reduction of ARCH_DMA_MINALIGN back to 64 bytes. - Refactoring of our instruction decoding routines and addition of some missing encodings. - Move entry code moved into C and hardened against harmful compiler instrumentation. - Update booting requirements for the FEAT_HCX feature, added to v8.7 of the architecture. - Fix resume from idle when pNMI is being used. - Additional CPU sanity checks for MTE and preparatory changes for systems where not all of the CPUs support 32-bit EL0. - Update our kernel string routines to the latest Cortex Strings implementation. - Big cleanup of our cache maintenance routines, which were confusingly named and inconsistent in their implementations. - Tweak linker flags so that GDB can understand vmlinux when using RELR relocations. - Boot path cleanups to enable early initialisation of per-cpu operations needed by KCSAN. - Non-critical fixes and miscellaneous cleanup" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (150 commits) arm64: tlb: fix the TTL value of tlb_get_level arm64: Restrict undef hook for cpufeature registers arm64/mm: Rename ARM64_SWAPPER_USES_SECTION_MAPS arm64: insn: avoid circular include dependency arm64: smp: Bump debugging information print down to KERN_DEBUG drivers/perf: fix the missed ida_simple_remove() in ddr_perf_probe() perf/arm-cmn: Fix invalid pointer when access dtc object sharing the same IRQ number arm64: suspend: Use cpuidle context helpers in cpu_suspend() PSCI: Use cpuidle context helpers in psci_cpu_suspend_enter() arm64: Convert cpu_do_idle() to using cpuidle context helpers arm64: Add cpuidle context save/restore helpers arm64: head: fix code comments in set_cpu_boot_mode_flag arm64: mm: drop unused __pa(__idmap_text_start) arm64: mm: fix the count comments in compute_indices arm64/mm: Fix ttbr0 values stored in struct thread_info for software-pan arm64: mm: Pass original fault address to handle_mm_fault() arm64/mm: Drop SECTION_[SHIFT|SIZE|MASK] arm64/mm: Use CONT_PMD_SHIFT for ARM64_MEMSTART_SHIFT arm64/mm: Drop SWAPPER_INIT_MAP_SIZE arm64: Conditionally configure PTR_AUTH key of the kernel. ...
2021-06-28Merge tag 'x86-asm-2021-06-28' of ↵Linus Torvalds2-14/+203
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 asm updates from Ingo Molnar: - Micro-optimize and standardize the do_syscall_64() calling convention - Make syscall entry flags clearing more conservative - Clean up syscall table handling - Clean up & standardize assembly macros, in preparation of FRED - Misc cleanups and fixes * tag 'x86-asm-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm: Make <asm/asm.h> valid on cross-builds as well x86/regs: Syscall_get_nr() returns -1 for a non-system call x86/entry: Split PUSH_AND_CLEAR_REGS into two submacros x86/syscall: Maximize MSR_SYSCALL_MASK x86/syscall: Unconditionally prototype {ia32,x32}_sys_call_table[] x86/entry: Reverse arguments to do_syscall_64() x86/entry: Unify definitions from <asm/calling.h> and <asm/ptrace-abi.h> x86/asm: Use _ASM_BYTES() in <asm/nops.h> x86/asm: Add _ASM_BYTES() macro for a .byte ... opcode sequence x86/asm: Have the __ASM_FORM macros handle commas in arguments
2021-06-28selftests/seccomp: Avoid using "sysctl" for reportKees Cook1-2/+6
Instead of depending on "sysctl" being installed, just use "grep -H" for sysctl status reporting. Additionally report kernel version for easier comparisons. Signed-off-by: Kees Cook <[email protected]>
2021-06-28selftests/seccomp: Flush benchmark outputKees Cook1-0/+2
When running the seccomp benchmark under a test runner, it wouldn't provide any feedback on progress. Set stdout unbuffered. Suggested-by: Will Drewry <[email protected]> Signed-off-by: Kees Cook <[email protected]>
2021-06-28selftests/seccomp: More closely track fds being assignedKees Cook1-7/+12
Since the open fds might not always start at "4" (especially when running under kselftest, etc), start counting from the first assigned fd, rather than using the more permissive EXPECT_GE(fd, 0). Signed-off-by: Kees Cook <[email protected]> Link: https://lore.kernel.org/lkml/[email protected] Reviewed-by: Rodrigo Campos <[email protected]> Acked-by: Christian Brauner <[email protected]>
2021-06-28selftests/seccomp: Add test for atomic addfd+sendRodrigo Campos1-0/+38
This just adds a test to verify that when using the new introduced flag to ADDFD, a valid fd is added and returned as the syscall result. Signed-off-by: Rodrigo Campos <[email protected]> Signed-off-by: Sargun Dhillon <[email protected]> Acked-by: Tycho Andersen <[email protected]> Acked-by: Christian Brauner <[email protected]> Signed-off-by: Kees Cook <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-06-28Merge tag 'sched-core-2021-06-28' of ↵Linus Torvalds5-0/+362
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler udpates from Ingo Molnar: - Changes to core scheduling facilities: - Add "Core Scheduling" via CONFIG_SCHED_CORE=y, which enables coordinated scheduling across SMT siblings. This is a much requested feature for cloud computing platforms, to allow the flexible utilization of SMT siblings, without exposing untrusted domains to information leaks & side channels, plus to ensure more deterministic computing performance on SMT systems used by heterogenous workloads. There are new prctls to set core scheduling groups, which allows more flexible management of workloads that can share siblings. - Fix task->state access anti-patterns that may result in missed wakeups and rename it to ->__state in the process to catch new abuses. - Load-balancing changes: - Tweak newidle_balance for fair-sched, to improve 'memcache'-like workloads. - "Age" (decay) average idle time, to better track & improve workloads such as 'tbench'. - Fix & improve energy-aware (EAS) balancing logic & metrics. - Fix & improve the uclamp metrics. - Fix task migration (taskset) corner case on !CONFIG_CPUSET. - Fix RT and deadline utilization tracking across policy changes - Introduce a "burstable" CFS controller via cgroups, which allows bursty CPU-bound workloads to borrow a bit against their future quota to improve overall latencies & batching. Can be tweaked via /sys/fs/cgroup/cpu/<X>/cpu.cfs_burst_us. - Rework assymetric topology/capacity detection & handling. - Scheduler statistics & tooling: - Disable delayacct by default, but add a sysctl to enable it at runtime if tooling needs it. Use static keys and other optimizations to make it more palatable. - Use sched_clock() in delayacct, instead of ktime_get_ns(). - Misc cleanups and fixes. * tag 'sched-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits) sched/doc: Update the CPU capacity asymmetry bits sched/topology: Rework CPU capacity asymmetry detection sched/core: Introduce SD_ASYM_CPUCAPACITY_FULL sched_domain flag psi: Fix race between psi_trigger_create/destroy sched/fair: Introduce the burstable CFS controller sched/uclamp: Fix uclamp_tg_restrict() sched/rt: Fix Deadline utilization tracking during policy change sched/rt: Fix RT utilization tracking during policy change sched: Change task_struct::state sched,arch: Remove unused TASK_STATE offsets sched,timer: Use __set_current_state() sched: Add get_current_state() sched,perf,kvm: Fix preemption condition sched: Introduce task_is_running() sched: Unbreak wakeups sched/fair: Age the average idle time sched/cpufreq: Consider reduced CPU capacity in energy calculation sched/fair: Take thermal pressure into account while estimating energy thermal/cpufreq_cooling: Update offline CPUs per-cpu thermal_pressure sched/fair: Return early from update_tg_cfs_load() if delta == 0 ...
2021-06-28Merge tag 'locking-core-2021-06-28' of ↵Linus Torvalds6-18/+430
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: - Core locking & atomics: - Convert all architectures to ARCH_ATOMIC: move every architecture to ARCH_ATOMIC, then get rid of ARCH_ATOMIC and all the transitory facilities and #ifdefs. Much reduction in complexity from that series: 63 files changed, 756 insertions(+), 4094 deletions(-) - Self-test enhancements - Futexes: - Add the new FUTEX_LOCK_PI2 ABI, which is a variant that doesn't set FLAGS_CLOCKRT (.e. uses CLOCK_MONOTONIC). [ The temptation to repurpose FUTEX_LOCK_PI's implicit setting of FLAGS_CLOCKRT & invert the flag's meaning to avoid having to introduce a new variant was resisted successfully. ] - Enhance futex self-tests - Lockdep: - Fix dependency path printouts - Optimize trace saving - Broaden & fix wait-context checks - Misc cleanups and fixes. * tag 'locking-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits) locking/lockdep: Correct the description error for check_redundant() futex: Provide FUTEX_LOCK_PI2 to support clock selection futex: Prepare futex_lock_pi() for runtime clock selection lockdep/selftest: Remove wait-type RCU_CALLBACK tests lockdep/selftests: Fix selftests vs PROVE_RAW_LOCK_NESTING lockdep: Fix wait-type for empty stack locking/selftests: Add a selftest for check_irq_usage() lockding/lockdep: Avoid to find wrong lock dep path in check_irq_usage() locking/lockdep: Remove the unnecessary trace saving locking/lockdep: Fix the dep path printing for backwards BFS selftests: futex: Add futex compare requeue test selftests: futex: Add futex wait test seqlock: Remove trailing semicolon in macros locking/lockdep: Reduce LOCKDEP dependency list locking/lockdep,doc: Improve readability of the block matrix locking/atomics: atomic-instrumented: simplify ifdeffery locking/atomic: delete !ARCH_ATOMIC remnants locking/atomic: xtensa: move to ARCH_ATOMIC locking/atomic: sparc: move to ARCH_ATOMIC locking/atomic: sh: move to ARCH_ATOMIC ...
2021-06-28Merge tags 'objtool-urgent-2021-06-28' and 'objtool-core-2021-06-28' of ↵Linus Torvalds8-51/+136
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool fix and updates from Ingo Molnar: "An ELF format fix for a section flags mismatch bug that breaks kernel tooling such as kpatch-build. The biggest change in this cycle is the new code to handle and rewrite variable sized jump labels - which results in slightly tighter code generation in hot paths, through the use of short(er) NOPs. Also a number of cleanups and fixes, and a change to the generic include/linux/compiler.h to handle a s390 GCC quirk" * tag 'objtool-urgent-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Don't make .altinstructions writable * tag 'objtool-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Improve reloc hash size guestimate instrumentation.h: Avoid using inline asm operand modifiers compiler.h: Avoid using inline asm operand modifiers kbuild: Fix objtool dependency for 'OBJECT_FILES_NON_STANDARD_<obj> := n' objtool: Reflow handle_jump_alt() jump_label/x86: Remove unused JUMP_LABEL_NOP_SIZE jump_label, x86: Allow short NOPs objtool: Provide stats for jump_labels objtool: Rewrite jump_label instructions objtool: Decode jump_entry::key addend jump_label, x86: Emit short JMP jump_label: Free jump_entry::key bit1 for build use jump_label, x86: Add variable length patching support jump_label, x86: Introduce jump_entry_size() jump_label, x86: Improve error when we fail expected text jump_label, x86: Factor out the __jump_table generation jump_label, x86: Strip ASM jump_label support x86, objtool: Dont exclude arch/x86/realmode/ objtool: Rewrite hashtable sizing
2021-06-25Merge tag 'kvmarm-5.14' of ↵Paolo Bonzini76-837/+2262
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 updates for v5.14. - Add MTE support in guests, complete with tag save/restore interface - Reduce the impact of CMOs by moving them in the page-table code - Allow device block mappings at stage-2 - Reduce the footprint of the vmemmap in protected mode - Support the vGIC on dumb systems such as the Apple M1 - Add selftest infrastructure to support multiple configuration and apply that to PMU/non-PMU setups - Add selftests for the debug architecture - The usual crop of PMU fixes
2021-06-24selftests: kvm: Allows userspace to handle emulation errors.Aaron Lewis5-0/+317
This test exercises the feature KVM_CAP_EXIT_ON_EMULATION_FAILURE. When enabled, errors in the in-kernel instruction emulator are forwarded to userspace with the instruction bytes stored in the exit struct for KVM_EXIT_INTERNAL_ERROR. So, when the guest attempts to emulate an 'flds' instruction, which isn't able to be emulated in KVM, instead of failing, KVM sends the instruction to userspace to handle. For this test to work properly the module parameter 'allow_smaller_maxphyaddr' has to be set. Signed-off-by: Aaron Lewis <[email protected]> Reviewed-by: Jim Mattson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: x86/mmu: Rename "nxe" role bit to "efer_nx" for macro shenanigansSean Christopherson1-2/+2
Rename "nxe" to "efer_nx" so that future macro magic can use the pattern <reg>_<bit> for all CR0, CR4, and EFER bits that included in the role. Using "efer_nx" also makes it clear that the role bit reflects EFER.NX, not the NX bit in the corresponding PTE. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Add selftest for KVM statistics data binary interfaceJing Zhang5-0/+256
Add selftest to check KVM stats descriptors validity. Reviewed-by: David Matlack <[email protected]> Reviewed-by: Ricardo Koller <[email protected]> Reviewed-by: Krish Sadhukhan <[email protected]> Tested-by: Fuad Tabba <[email protected]> #arm64 Signed-off-by: Jing Zhang <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: sefltests: Add x86-64 test to verify MMU reacts to CPUID updatesSean Christopherson4-0/+152
Add an x86-only test to verify that x86's MMU reacts to CPUID updates that impact the MMU. KVM has had multiple bugs where it fails to reconfigure the MMU after the guest's vCPU model changes. Sadly, this test is effectively limited to shadow paging because the hardware page walk handler doesn't support software disabling of GBPAGES support, and KVM doesn't manually walk the GVA->GPA on faults for performance reasons (doing so would large defeat the benefits of TDP). Don't require !TDP for the tests as there is still value in running the tests with TDP, even though the tests will fail (barring KVM hacks). E.g. KVM should not completely explode if MAXPHYADDR results in KVM using 4-level vs. 5-level paging for the guest. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Add hugepage support for x86-64Sean Christopherson2-25/+68
Add x86-64 hugepage support in the form of a x86-only variant of virt_pg_map() that takes an explicit page size. To keep things simple, follow the existing logic for 4k pages and disallow creating a hugepage if the upper-level entry is present, even if the desired pfn matches. Opportunistically fix a double "beyond beyond" reported by checkpatch. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Genericize upper level page table entry structSean Christopherson1-65/+26
In preparation for adding hugepage support, replace "pageMapL4Entry", "pageDirectoryPointerEntry", and "pageDirectoryEntry" with a common "pageUpperEntry", and add a helper to create an upper level entry. All upper level entries have the same layout, using unique structs provides minimal value and requires a non-trivial amount of code duplication. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Add PTE helper for x86-64 in preparation for hugepagesSean Christopherson1-28/+31
Add a helper to retrieve a PTE pointer given a PFN, address, and level in preparation for adding hugepage support. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Rename x86's page table "address" to "pfn"Sean Christopherson1-25/+22
Rename the "address" field to "pfn" in x86's page table structs to match reality. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Add wrapper to allocate page table pageSean Christopherson6-39/+23
Add a helper to allocate a page for use in constructing the guest's page tables. All architectures have identical address and memslot requirements (which appear to be arbitrary anyways). No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Unconditionally allocate EPT tables in memslot 0Sean Christopherson4-22/+17
Drop the EPTP memslot param from all EPT helpers and shove the hardcoded '0' down to the vm_phy_page_alloc() calls. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Unconditionally use memslot '0' for page table allocationsSean Christopherson16-35/+31
Drop the memslot param from virt_pg_map() and virt_map() and shove the hardcoded '0' down to the vm_phy_page_alloc() calls. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Unconditionally use memslot 0 for vaddr allocationsSean Christopherson7-21/+18
Drop the memslot param(s) from vm_vaddr_alloc() now that all callers directly specific '0' as the memslot. Drop the memslot param from virt_pgd_alloc() as well since vm_vaddr_alloc() is its only user. I.e. shove the hardcoded '0' down to the vm_phy_pages_alloc() calls. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Use "standard" min virtual address for CPUID test allocSean Christopherson1-2/+1
Use KVM_UTIL_MIN_ADDR as the minimum for x86-64's CPUID array. The system page size was likely used as the minimum because _something_ had to be provided. Increasing the min from 0x1000 to 0x2000 should have no meaningful impact on the test, and will allow changing vm_vaddr_alloc() to use KVM_UTIL_MIN_VADDR as the default. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Use alloc page helper for xAPIC IPI testSean Christopherson1-1/+1
Use the common page allocation helper for the xAPIC IPI test, effectively raising the minimum virtual address from 0x1000 to 0x2000. Presumably the test won't explode if it can't get a page at address 0x1000... Cc: Peter Shier <[email protected]> Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Use alloc_page helper for x86-64's GDT/IDT/TSS allocationsSean Christopherson1-6/+4
Switch to the vm_vaddr_alloc_page() helper for x86-64's "kernel" allocations now that the helper uses the same min virtual address as the open coded versions. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Lower the min virtual address for misc page allocationsSean Christopherson1-1/+1
Reduce the minimum virtual address of page allocations from 0x10000 to KVM_UTIL_MIN_VADDR (0x2000). Both values appear to be completely arbitrary, and reducing the min to KVM_UTIL_MIN_VADDR will allow for additional consolidation of code. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Add helpers to allocate N pages of virtual memorySean Christopherson6-24/+59
Add wrappers to allocate 1 and N pages of memory using de facto standard values as the defaults for minimum virtual address, data memslot, and page table memslot. Convert all compatible users. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Use "standard" min virtual address for Hyper-V pagesSean Christopherson1-1/+1
Use the de facto standard minimum virtual address for Hyper-V's hcall params page. It's the allocator's job to not double-allocate memory, i.e. there's no reason to force different regions for the params vs. hcall page. This will allow adding a page allocation helper with a "standard" minimum address. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Unconditionally use memslot 0 for x86's GDT/TSS setupSean Christopherson1-10/+8
Refactor x86's GDT/TSS allocations to for memslot '0' at its vm_addr_alloc() call sites instead of passing in '0' from on high. This is a step toward using a common helper for allocating pages. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Unconditionally use memslot 0 when loading elf binarySean Christopherson6-10/+7
Use memslot '0' for all vm_vaddr_alloc() calls when loading the test binary. This is the first step toward adding a helper to handle page allocations with a default value for the target memslot. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Zero out the correct page in the Hyper-V features testSean Christopherson1-1/+1
Fix an apparent copy-paste goof in hyperv_features where hcall_page (which is two pages, so technically just the first page) gets zeroed twice, and hcall_params gets zeroed none times. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Remove errant asm/barrier.h include to fix arm64 buildSean Christopherson1-1/+0
Drop an unnecessary include of asm/barrier.h from dirty_log_test.c to allow the test to build on arm64. arm64, s390, and x86 all build cleanly without the include (PPC and MIPS aren't supported in KVM's selftests). arm64's barrier.h includes linux/kasan-checks.h, which is not copied into tools/. In file included from ../../../../tools/include/asm/barrier.h:8, from dirty_log_test.c:19: .../arm64/include/asm/barrier.h:12:10: fatal error: linux/kasan-checks.h: No such file or directory 12 | #include <linux/kasan-checks.h> | ^~~~~~~~~~~~~~~~~~~~~~ compilation terminated. Fixes: 84292e565951 ("KVM: selftests: Add dirty ring buffer test") Cc: Peter Xu <[email protected]> Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: fix triple fault if ept=0 in dirty_log_testHou Wenlong4-8/+3
Commit 22f232d134e1 ("KVM: selftests: x86: Set supported CPUIDs on default VM") moved vcpu_set_cpuid into vm_create_with_vcpus, but dirty_log_test doesn't use it to create vm. So vcpu's CPUIDs is not set, the guest's pa_bits in kvm would be smaller than the value queried by userspace. However, the dirty track memory slot is in the highest GPA, the reserved bits in gpte would be set with wrong pa_bits. For shadow paging, page fault would fail in permission_fault and be injected into guest. Since guest doesn't have idt, it finally leads to vm_exit for triple fault. Move vcpu_set_cpuid into vm_vcpu_add_default to set supported CPUIDs on default vcpu, since almost all tests need it. Fixes: 22f232d134e1 ("KVM: selftests: x86: Set supported CPUIDs on default VM") Signed-off-by: Hou Wenlong <[email protected]> Message-Id: <411ea2173f89abce56fc1fca5af913ed9c5a89c9.1624351343.git.houwenlong93@linux.alibaba.com> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24KVM: selftests: Fix mapping length truncation in m{,un}map()Zenghui Yu1-2/+2
max_mem_slots is now declared as uint32_t. The result of (0x200000 * 32767) is unexpectedly truncated to be 0xffe00000, whilst we actually need to allocate about, 63GB. Cast max_mem_slots to size_t in both mmap() and munmap() to fix the length truncation. We'll otherwise see the failure on arm64 thanks to the access_ok() checking in __kvm_set_memory_region(), as the unmapped VA happen to go beyond the task's allowed address space. # ./set_memory_region_test Allowed number of memory slots: 32767 Adding slots 0..32766, each memory region with 2048K size ==== Test Assertion Failure ==== set_memory_region_test.c:391: ret == 0 pid=94861 tid=94861 errno=22 - Invalid argument 1 0x00000000004015a7: test_add_max_memory_regions at set_memory_region_test.c:389 2 (inlined by) main at set_memory_region_test.c:426 3 0x0000ffffb8e67bdf: ?? ??:0 4 0x00000000004016db: _start at :? KVM_SET_USER_MEMORY_REGION IOCTL failed, rc: -1 errno: 22 slot: 2615 Fixes: 3bf0fcd75434 ("KVM: selftests: Speed up set_memory_region_test") Signed-off-by: Zenghui Yu <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2021-06-24objtool: Don't make .altinstructions writableJosh Poimboeuf1-1/+1
When objtool creates the .altinstructions section, it sets the SHF_WRITE flag to make the section writable -- unless the section had already been previously created by the kernel. The mismatch between kernel-created and objtool-created section flags can cause failures with external tooling (kpatch-build). And the section doesn't need to be writable anyway. Make the section flags consistent with the kernel's. Fixes: 9bc0bb50727c ("objtool/x86: Rewrite retpoline thunk calls") Reported-by: Joe Lawrence <[email protected]> Signed-off-by: Josh Poimboeuf <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Link: https://lore.kernel.org/r/6c284ae89717889ea136f9f0064d914cd8329d31.1624462939.git.jpoimboe@redhat.com
2021-06-23Merge branch 'topic/ppc-kvm' of ↵Paolo Bonzini31-44/+293
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux into HEAD - Support for the H_RPT_INVALIDATE hypercall - Conversion of Book3S entry/exit to C - Bug fixes
2021-06-22selftests: futex: Add futex compare requeue testAndré Almeida4-1/+142
Add testing for futex_cmp_requeue(). The first test just requeues from one waiter to another one, and wakes it. The second performs both wake and requeue, and checks the return values to see if the operation woke/requeued the expected number of waiters. Signed-off-by: André Almeida <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Davidlohr Bueso <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-06-22selftests: futex: Add futex wait testAndré Almeida4-1/+177
There are three different strategies to uniquely identify a futex in the kernel: - Private futexes: uses the pointer to mm_struct and the page address - Shared futexes: checks if the page containing the address is a PageAnon: - If it is, uses the same data as a private futexes - If it isn't, uses an inode sequence number from struct inode and the page's index Create a selftest to check those three paths and basic wait/wake mechanism. Signed-off-by: André Almeida <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Davidlohr Bueso <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-06-22Merge branch kvm-arm64/selftest/sysreg-list-fix into kvmarm-master/nextMarc Zyngier4-123/+321
Selftest updates from Andrew Jones, fixing the sysgreg list expectations by dealing with multiple configurations, such as with or without a PMU. * kvm-arm64/selftest/sysreg-list-fix: KVM: arm64: Update MAINTAINERS to include selftests KVM: arm64: selftests: get-reg-list: Split base and pmu registers KVM: arm64: selftests: get-reg-list: Remove get-reg-list-sve KVM: arm64: selftests: get-reg-list: Provide config selection option KVM: arm64: selftests: get-reg-list: Prepare to run multiple configs at once KVM: arm64: selftests: get-reg-list: Introduce vcpu configs
2021-06-22KVM: arm64: selftests: get-reg-list: Split base and pmu registersAndrew Jones1-8/+31
Since KVM commit 11663111cd49 ("KVM: arm64: Hide PMU registers from userspace when not available") the get-reg-list* tests have been failing with ... ... There are 74 missing registers. The following lines are missing registers: ... where the 74 missing registers are all PMU registers. This isn't a bug in KVM that the selftest found, even though it's true that a KVM userspace that wasn't setting the KVM_ARM_VCPU_PMU_V3 VCPU flag, but still expecting the PMU registers to be in the reg-list, would suddenly no longer have their expectations met. In that case, the expectations were wrong, though, so that KVM userspace needs to be fixed, and so does this selftest. The fix for this selftest is to pull the PMU registers out of the base register sublist into their own sublist and then create new, pmu-enabled vcpu configs which can be tested. Signed-off-by: Andrew Jones <[email protected]> Reviewed-by: Ricardo Koller <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-06-22KVM: arm64: selftests: get-reg-list: Remove get-reg-list-sveAndrew Jones4-15/+21
Now that we can easily run the test for multiple vcpu configs, let's merge get-reg-list and get-reg-list-sve into just get-reg-list. We also add a final change to make it more possible to run multiple tests, which is to fork the test, rather than directly run it. That allows a test to fail, but subsequent tests can still run. Signed-off-by: Andrew Jones <[email protected]> Reviewed-by: Ricardo Koller <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-06-22KVM: arm64: selftests: get-reg-list: Provide config selection optionAndrew Jones1-3/+53
Add a new command line option that allows the user to select a specific configuration, e.g. --config=sve will give the sve config. Also provide help text and the --help/-h options. Signed-off-by: Andrew Jones <[email protected]> Reviewed-by: Ricardo Koller <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-06-22KVM: arm64: selftests: get-reg-list: Prepare to run multiple configs at onceAndrew Jones1-17/+51
We don't want to have to create a new binary for each vcpu config, so prepare to run the test for multiple vcpu configs in a single binary. We do this by factoring out the test from main() and then looping over configs. When given '--list' we still never print more than a single reg-list for a single vcpu config though, because it would be confusing otherwise. No functional change intended. Signed-off-by: Andrew Jones <[email protected]> Reviewed-by: Ricardo Koller <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> Link: https://lore.kernel.org/r/[email protected]
Powered by cgit, Gruvboxed by Blaster4385.