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342403bcb4
ACPI and IORT updates (Lorenzo Pieralisi) * for-next/acpi: ACPI/IORT: Remove the unused __get_pci_rid() ACPI/IORT: Fix PMCG node single ID mapping handling ACPI: IORT: Add comments for not calling acpi_put_table() ACPI: GTDT: Put GTDT table after parsing ACPI: IORT: Add extra message "applying workaround" for off-by-1 issue ACPI/IORT: work around num_ids ambiguity Revert "ACPI/IORT: Fix 'Number of IDs' handling in iort_id_map()" ACPI/IORT: take _DMA methods into account for named components BPF JIT optimisations for immediate value generation (Luke Nelson) * for-next/bpf: bpf, arm64: Optimize ADD,SUB,JMP BPF_K using arm64 add/sub immediates bpf, arm64: Optimize AND,OR,XOR,JSET BPF_K using arm64 logical immediates arm64: insn: Fix two bugs in encoding 32-bit logical immediates Addition of new CPU ID register fields and removal of some benign sanity checks (Anshuman Khandual and others) * for-next/cpufeature: (27 commits) KVM: arm64: Check advertised Stage-2 page size capability arm64/cpufeature: Add get_arm64_ftr_reg_nowarn() arm64/cpuinfo: Add ID_MMFR4_EL1 into the cpuinfo_arm64 context arm64/cpufeature: Add remaining feature bits in ID_AA64PFR1 register arm64/cpufeature: Add remaining feature bits in ID_AA64PFR0 register arm64/cpufeature: Add remaining feature bits in ID_AA64ISAR0 register arm64/cpufeature: Add remaining feature bits in ID_MMFR4 register arm64/cpufeature: Add remaining feature bits in ID_PFR0 register arm64/cpufeature: Introduce ID_MMFR5 CPU register arm64/cpufeature: Introduce ID_DFR1 CPU register arm64/cpufeature: Introduce ID_PFR2 CPU register arm64/cpufeature: Make doublelock a signed feature in ID_AA64DFR0 arm64/cpufeature: Drop TraceFilt feature exposure from ID_DFR0 register arm64/cpufeature: Add explicit ftr_id_isar0[] for ID_ISAR0 register arm64/cpufeature: Drop open encodings while extracting parange arm64/cpufeature: Validate hypervisor capabilities during CPU hotplug arm64: cpufeature: Group indexed system register definitions by name arm64: cpufeature: Extend comment to describe absence of field info arm64: drop duplicate definitions of ID_AA64MMFR0_TGRAN constants arm64: cpufeature: Add an overview comment for the cpufeature framework ... Minor documentation tweaks for silicon errata and booting requirements (Rob Herring and Will Deacon) * for-next/docs: arm64: silicon-errata.rst: Sort the Cortex-A55 entries arm64: docs: Mandate that the I-cache doesn't hold stale kernel text Minor Kconfig cleanups (Geert Uytterhoeven) * for-next/kconfig: arm64: cpufeature: Add "or" to mitigations for multiple errata arm64: Sort vendor-specific errata Miscellaneous updates (Ard Biesheuvel and others) * for-next/misc: arm64: mm: Add asid_gen_match() helper arm64: stacktrace: Factor out some common code into on_stack() arm64: Call debug_traps_init() from trap_init() to help early kgdb arm64: cacheflush: Fix KGDB trap detection arm64/cpuinfo: Move device_initcall() near cpuinfo_regs_init() arm64: kexec_file: print appropriate variable arm: mm: use __pfn_to_section() to get mem_section arm64: Reorder the macro arguments in the copy routines efi/libstub/arm64: align PE/COFF sections to segment alignment KVM: arm64: Drop PTE_S2_MEMATTR_MASK arm64/kernel: Fix range on invalidating dcache for boot page tables arm64: set TEXT_OFFSET to 0x0 in preparation for removing it entirely arm64: lib: Consistently enable crc32 extension arm64/mm: Use phys_to_page() to access pgtable memory arm64: smp: Make cpus_stuck_in_kernel static arm64: entry: remove unneeded semicolon in el1_sync_handler() arm64/kernel: vmlinux.lds: drop redundant discard/keep macros arm64: drop GZFLAGS definition and export arm64: kexec_file: Avoid temp buffer for RNG seed arm64: rename stext to primary_entry Perf PMU driver updates (Tang Bin and others) * for-next/perf: pmu/smmuv3: Clear IRQ affinity hint on device removal drivers/perf: hisi: Permit modular builds of HiSilicon uncore drivers drivers/perf: hisi: Fix typo in events attribute array drivers/perf: arm_spe_pmu: Avoid duplicate printouts drivers/perf: arm_dsu_pmu: Avoid duplicate printouts Pointer authentication updates and support for vmcoreinfo (Amit Daniel Kachhap and Mark Rutland) * for-next/ptr-auth: Documentation/vmcoreinfo: Add documentation for 'KERNELPACMASK' arm64/crash_core: Export KERNELPACMASK in vmcoreinfo arm64: simplify ptrauth initialization arm64: remove ptrauth_keys_install_kernel sync arg SDEI cleanup and non-critical fixes (James Morse and others) * for-next/sdei: firmware: arm_sdei: Document the motivation behind these set_fs() calls firmware: arm_sdei: remove unused interfaces firmware: arm_sdei: Put the SDEI table after using it firmware: arm_sdei: Drop check for /firmware/ node and always register driver SMCCC updates and refactoring (Sudeep Holla) * for-next/smccc: firmware: smccc: Fix missing prototype warning for arm_smccc_version_init firmware: smccc: Add function to fetch SMCCC version firmware: smccc: Refactor SMCCC specific bits into separate file firmware: smccc: Drop smccc_version enum and use ARM_SMCCC_VERSION_1_x instead firmware: smccc: Add the definition for SMCCCv1.2 version/error codes firmware: smccc: Update link to latest SMCCC specification firmware: smccc: Add HAVE_ARM_SMCCC_DISCOVERY to identify SMCCC v1.1 and above vDSO cleanup and non-critical fixes (Mark Rutland and Vincenzo Frascino) * for-next/vdso: arm64: vdso: Add --eh-frame-hdr to ldflags arm64: vdso: use consistent 'map' nomenclature arm64: vdso: use consistent 'abi' nomenclature arm64: vdso: simplify arch_vdso_type ifdeffery arm64: vdso: remove aarch32_vdso_pages[] arm64: vdso: Add '-Bsymbolic' to ldflags
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.