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* sched: Add runq_lock helpers which check they are called at spl7Samuel Thibault2023-08-124-11/+26
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* kern: Check that locking thread is done at spl7Samuel Thibault2023-08-121-2/+13
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* lock: Add _irq variantsSamuel Thibault2023-08-121-9/+75
| | | | | | | | And pave the way for making the non-_irq variants check that they are never used within interrupts. We do have a few places which were missing it, as the following commits will show.
* lock: Add more sanity checksSamuel Thibault2023-08-121-0/+3
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* lock: Reset l->writer also for read-write upgradees which are doneSamuel Thibault2023-08-121-2/+5
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* lock: Fix building with MACH_LDEBUG but NCPUS==1Samuel Thibault2023-08-121-1/+1
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* lock: Rename simple_unlock version with information to _simple_unlockSamuel Thibault2023-08-122-2/+3
| | | | For coherency with the rest of the implementations
* kern/thread: Only loop over cpus that existDamien Zammit2023-08-061-1/+2
| | | | Message-Id: <20230805154859.2003109-1-damien@zamaudio.com>
* Add timing info to MACH_LOCK_MON lock monitoringDamien Zammit2023-08-051-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Booting to beginning of bootstrap with different number of cpus and checking the lock statistics where TIME is in milliseconds: Set MACH_LOCK_MON to 1 in configfrag.ac, then Configure options --enable-ncpus=8 --enable-kdb --enable-apic --disable-linux-groups -smp 1 db{0}> show all slocks SUCCESS FAIL MASKED STACK TIME LOCK/CALLER 4208 0/0 4208/100 2/0 7890/1 0xc1098f54(c11847c8) 1 0/0 1/100 0/0 7890/7890 0x315(c11966e0) 30742 0/0 0/0 2106/0 160/0 0xf52a9e2c(f5a07958) 30742 0/0 0/0 0/0 140/0 0xf52a5e2c(f5a07b10) 149649 0/0 3372/2 1/0 120/0 0xc118a590(c118a9d4) 16428 0/0 0/0 1/0 90/0 0xf52a5dd0(f5a07ab8) 14345 0/0 0/0 18/0 80/0 0xf64afe2c(f64aa488) 1791 0/0 0/0 1/0 80/0 0xf52a3e70(f5e57f70) 17331 total locks, 0 empty buckets 2320150 0/0 455490/19 11570533/4 17860/0 0xc10a4580(c10a4580) -smp 2 (could not wait until booted) db{0}> show all slocks SUCCESS FAIL MASKED STACK TIME LOCK/CALLER 47082 0/0 47082/100 0/0 413940/8 0xc1098f54(c11847c8) 2 0/0 2/100 0/0 413940/206970 0x6ede(c11966e0) 47139 0/0 0/0 2106/0 4670/0 0xc119edec(f5e409b0) 132895 3/0 3372/2 1/0 4580/0 0xc118a590(c118a9d4) 118313 0/0 2/0 0/0 3660/0 0xc1098ec4(c1189f80) 183233 1/0 1714/0 2/0 2290/0 0xc1098e54(c118aa8c) 14357 0/0 0/0 1878/0 1200/0 0xf52a4de0(f5e40a60) 14345 0/0 0/0 18/0 1200/0 0xf52a4dec(f528f488) 16910 total locks, 0 empty buckets 2220850 455/0 485391/21 11549793/5 879030/0 0xc10a4580(c10a4580) Message-Id: <20230722045043.1579134-1-damien@zamaudio.com>
* Fix task_info for TASK_THREAD_TIMES_INFO.Flavio Cruz2023-05-171-1/+7
| | | | | | We are checking for the existence of time_value64_t but we didn't add that to the task_thread_times_info structure. Message-Id: <ZGRDbS0XIm1fJwkG@jupiter.tail36e24.ts.net>
* Keep host_get_kernel_version for USER32-on-x86_64 caseSamuel Thibault2023-05-111-1/+1
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* Remove host_kernel_version RPC for x86_64Flavio Cruz2023-05-111-4/+6
| | | | | | | We can fast track the simplification of the RPC ABI for x86_64 if we don't have MACH_MSG_TYPE_STRING used in RPCs which forces msgt_size to use more than 8 bits. Message-Id: <ZFht+/9cVPHuV90D@jupiter.tail36e24.ts.net>
* Use designated initializers in kern/ipc_kobject.cFlavio Cruz2023-05-051-7/+8
| | | | | msgt_deallocate was not initialized explicitly, this fixes that too. Message-Id: <ZFM2cLr1Ms/B3v8U@jupiter.tail36e24.ts.net>
* Use designated initializers in kern/exception.cFlavio Cruz2023-05-041-28/+28
| | | | Message-Id: <ZFLq5/a9zzRHOlSf@jupiter.tail36e24.ts.net>
* Implement mig_deallocate to free memory when kernel server RPC succeedsFlavio Cruz2023-05-021-0/+10
| | | | | | | | | | | | In case the kernel interfaces use dynamically sized strings, we will end up calling mig_deallocate to free the out of line string that was copied into the kernel. As a matter of contract such type of data is freed automatically either in kernel code when the RPC fails or in the MiG stub if it succeeds. This was tested by changing task_set_name to use dynamic strings and making sure out of line data is passed when strlen(name) > 4. Message-Id: <ZFB64/0vOJ3x15ub@jupiter.tail36e24.ts.net>
* Use mig_support.h prototypes instead of duplicating them.Flavio Cruz2023-05-022-10/+2
| | | | | | | | | * include/mach/mig_support.h: Drop the ifndef because this file is only used internally to compile gnumach. We export mig_support.h from glibc already. * kern/ipc_mig.c: len should be vm_size_t. * kern/ipc_mig.h: Drop duplicate prototypes. Message-Id: <ZFBjEk07CaQgx9Ru@jupiter.tail36e24.ts.net>
* add setting gs/fsbaseLuca Dariz2023-05-011-0/+3
| | | | | | | | | | | * i386/i386/i386asm.sym: add offsets for asm * i386/i386/pcb.c: switch FSBASE/GSBASE on context switch and implement accessors in thread setstatus/getstatus * i386/i386/thread.h: add new state to thread saved state * kern/thread.c: add i386_FSGS_BASE_STATE handler * x86_64/locore.S: fix fs/gs handling, skipping the base address and avoid resetting it by manually re-loading fs/gs Message-Id: <20230419194703.410575-5-luca@orpolo.org>
* Update task_basic_info and thread_basic_info to include time_value64_t data.Flavio Cruz2023-04-272-9/+23
| | | | | | RPCs remain compatible with existing clients but if they know about the new size then we will populate the new fields. Message-Id: <ZDzPLCJccKeRB5Pd@mars.tail36e24.ts.net>
* Remove host_get_boot_info and host_get_kernel_boot_info since they are not used.Flavio Cruz2023-04-071-23/+0
| | | | | | host_get_kernel_boot_info was added recently to fix the use of MACH_MSG_TYPE_STRING. Message-Id: <ZC5Sz8a4FCT6IjCY@jupiter.tail36e24.ts.net>
* Align the user stack correctly for 64 bit programs.Flavio Cruz2023-04-041-2/+1
| | | | | | | | | | | * i386/i386/thread.h: Define USER_STACK_ALIGN which is 16-byte for 64 bit programs as recommended by the System V AMD64 guidelines. Also define KERNEL_STACK_ALIGN which can differ from user land. * i386/i386/pcb.c: Use USER_STACK_ALIGN to align the bootstrap arguments and ultimately the stack where the program starts on. * kern/bootstrap.c: Do not align arg_len here since it will be aligned in set_user_regs. Message-Id: <ZCpOb6vNEfPclKPr@jupiter.tail36e24.ts.net>
* Make exception subcode a longSergey Bugaev2023-04-033-16/+32
| | | | | | | | | On EXC_BAD_ACCESS, exception subcode is used to pass the faulting memory address, so it needs to be (at least) pointer-sized. Thus, make it into a long. This requires matching changes in glibc and the Hurd. Message-Id: <20230319151017.531737-4-bugaevc@gmail.com>
* Track task and thread time using time_value64_t.Flavio Cruz2023-03-137-104/+76
| | | | | | | | Changed kern/timer.c to use the higher precision time_value64_t. Of course, this won't suffer from the 2038 overflow but it does provide nanosecond precision (if gnumach ever uses a better timer) and moves us closer to only having time_value64_t. Message-Id: <ZA63tGcv3bETUJFJ@jupiter.tail36e24.ts.net>
* Use c_string to define host_get_kernel_version and host_get_kernel_boot_info.Flavio Cruz2023-03-132-0/+16
| | | | | | | | | | | | | | The existing definitions for kernel_version_t and kernel_boot_info_t use (MACH_MSG_TYPE_STRING, length*8) which result in message types that have a single element of 512 or 4096 bytes (set as msgt_size). This results in MiG generating mach_msg_type_long_t. Using c_string has the benefit of moving this size to be defined as msgt_number which doesn't overflow. This will allow us to simplify the 64 bit RPC ABI since all msgt_size can be defined with just 8 bits (as it should be expected). The resulting implementation is the same but we still need to define new RPCs since server and user expect different mach_msg_type_t. Message-Id: <ZA63pS8j9J6NwuXY@jupiter.tail36e24.ts.net>
* Update thread and task creation time to use time_value64_tFlavio Cruz2023-03-124-12/+9
| | | | Message-Id: <ZAzYoE7+ugFsH5JA@jupiter.tail36e24.ts.net>
* lock_mon: Fix warningsSamuel Thibault2023-03-073-9/+16
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* kern: Fix MACH_LOCK_MON lock monitoring debugDamien Zammit2023-03-074-4/+17
| | | | | | | | TESTED: - by setting MACH_LOCK_MON to 1 in configfrag.ac and running "show all slocks" in kdb - does not break default configured kernel Message-Id: <20230306070512.292715-1-damien@zamaudio.com>
* x86_64: fix argument passing to bootstrap modules if ! USER32Luca Dariz2023-02-161-5/+5
| | | | | * kern/bootstrap.c: replace integers with long/vm_offset_t Message-Id: <20230216213318.2048699-3-luca@orpolo.org>
* x86_64: load Elf64 bootstrap modules if ! USER32Luca Dariz2023-02-161-5/+5
| | | | | | | | | * i386/include/mach/i386/exec/elf.h: add Elf64 definitions and define common Elf structures, corresponding to 32/64 bit variants at compile time. * include/mach/exec/elf.h: add Elf64 definitions * kern/elf-load.c: use common Elf structures Message-Id: <20230216213318.2048699-2-luca@orpolo.org>
* Document spl levels of locks taken during interruptsSamuel Thibault2023-02-155-9/+15
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* timer: Fix atomicity of timer readsSamuel Thibault2023-02-151-0/+4
| | | | | | Similarly to update_mapped_time/read_mapped_time, one need to synchronize the writes and read to make sure they are performed in the expected order.
* smp: Fix more busy loopsSamuel Thibault2023-02-153-7/+9
| | | | | We need to avoid the kernel optimizing away the reads from memory. Use a standard relaxing instruction for that.
* add more explicit names for user space virtual space limitsLuca Dariz2023-02-121-2/+2
| | | | | | | | | | * i386/i386/vm_param.h: add VM_MAX/MIN_USER_ADDRESS to kernel headers. * i386/i386/db_interface.c * i386/i386/ldt.c * i386/i386/pcb.c * i386/intel/pmap.c * kern/task.c: replace VM_MAX/MIN_ADDRESS with VM_MAX/MIN_USER_ADDRESS Message-Id: <20230212172818.1511405-7-luca@orpolo.org>
* fix rpc time value for 64 bitLuca Dariz2023-02-124-3/+15
| | | | | | | | | | | | * include/mach/task_info.h: use rpc variant of time_value_t * include/mach/thread_info.h: Likewise * kern/mach_clock.c: use rpc variant of time_value_t in read_time_stamp() * kern/mach_clock.h: Likewise * kern/thread.c: use rpc variant of thread_read_times() * kern/timer.h_ add thread_read_times_rpc() by converting time_value_t to the corresponding rpc structures inline. Message-Id: <20230212170313.1501404-5-luca@orpolo.org>
* lock: Add missing def_simple_lock_data definition for ncpus=1Samuel Thibault2023-02-091-0/+2
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* slock: Fix initialization of statically-allocated slocksSamuel Thibault2023-02-0810-18/+15
| | | | (this is actually a no-op for i386)
* Add host_set_time64 and host_adjust_time64Flavio Cruz2023-01-281-18/+49
| | | | | | Same existing logic, just with 64 bits. Old RPCs are implemented by calling into the new RPCs. Message-Id: <Y9TJAmL2byOWup5x@jupiter.tail36e24.ts.net>
* Fix several warnings for -Wmissing-prototypesFlavio Cruz2023-01-247-39/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * device/ds_routines.c: use static qualifier. * device/subrs.c: delete unused functions. * i386/i386/ast_check.c: include prototypes in kern/ast.h * i386/i386/db_disasm.c: Include prototypes in ddb/db_examine.h * i386/i386/db_interface.h: Define prototype for kdb_kentry. Expose debug methods feep and kd_debug_put. * i386/i386/db_trace.c: delete left over cthreads support, functions are not used. * i386/i386/model_dep.h: Define prototype for c_boot_entry. * i386/i386at/acpi_parse_apic.c: Static qualifiers. * i386/i386at/autoconf.c: Include header file for prototypes and remove dead code. * i386/i386at/autoconf.h: Fix prototype. * i386/i386at/com.c: Add static qualifiers, delete dead code. * i386/i386at/com.c: ditto. * i386/i386at/com.h: Define prototypes for debug functions. * i386/i386at/int_init.c: Include header. * i386/i386at/kd.c: Include header for debug interface. Remove dead kd_cmdreg_read and make xga_getpos static. * i386/i386at/kd_mouse.c: Static qualifiers. * i386/i386at/lpr.c: Dead lprpr. * i386/i386at/model_dep.c: Remove exit function. * kern/mach_clock.c: Include mig prototypes. * kern/mach_clock.h: Remove duplicates of mig prototypes. * kern/machine.c: Use static. * kern/startup.c: slave_main is unused. * kern/thread.h: Define thread_stats that is useful for debugging. * kern/timer.c: Keep db_thread_times since it can be used for debugging. * kern/timer.h: ditto. * linux/dev/glue/misc.c: Use mig header for host_get_time. Message-Id: <Y8oyiecaflCaYhaW@mercury.tail36e24.ts.net>
* Remove existing old style definitions and use -Wold-style-definition.Flavio Cruz2023-01-194-19/+10
| | | | Message-Id: <Y8mYd/pt/og4Tj5I@mercury.tail36e24.ts.net>
* Add host_get_time64 RPC to return the time as time_value64_tFlavio Cruz2023-01-192-26/+49
| | | | | | Also updated the mapped time to support the new 64-bit time while keeping compatible with the user land programs currently using it so they can be migrated in parallel.
* Include mig generated headers to avoid warnings with -Wmissing-prototypes.Flavio Cruz2023-01-1915-280/+21
| | | | | | This also reverts 566c227636481b246d928772ebeaacbc7c37145b and 963b1794d7117064cee8ab5638b329db51dad854 Message-Id: <Y8d75KSqNL4FFInm@mercury.tail36e24.ts.net>
* replace mach_port_t with mach_port_name_tLuca Dariz2023-01-182-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is a cleanup following the introduction of mach_port_name_t. The same set of changes is applied to all files: - rename mach_port_t to mach_port_name_t where a port name is used, - use MACH_PORT_NAME_NULL and MACH_PORT_NAME_DEAD where appropriate, - use invalid_port_to_name() and invalid_name_to_port() for conversion where appropriate, - use regular copyout() insted of copyout_port() when we deal with mach_port_name_t already before copyout, - use the new helper ipc_kmsg_copyout_object_to_port() when we really want to place a port name in the space of a mach_port_t. * include/mach/notify.h: Likewise * ipc/ipc_entry.c: Likewise * ipc/ipc_kmsg.c: Likewise * ipc/ipc_kmsg.h: Likewise, and add ipc_kmsg_copyout_object_to_port() * ipc/ipc_marequest.c: Likewise * ipc/ipc_object.c: Likewise * ipc/ipc_port.c: Likewise * ipc/ipc_space.h: Likewise * ipc/mach_msg.c: Likewise * ipc/mach_port.c: Likewise * kern/exception.c: Likewise * kern/ipc_mig.c: Likewise Message-Id: <20230116105857.240210-8-luca@orpolo.org>
* update writev syscall signature with rpc typesLuca Dariz2023-01-182-6/+6
| | | | | | | | | | * device/device_emul.h: write/writev: update trap argument types * device/ds_routines.c: update argument types and adjust copyin * device/ds_routines.h: write/writev: update trap argument type * include/device/device_types.h: add rpc_io_buf_vec_t type * kern/ipc_mig.c: write/writev: update trap argument type * kern/ipc_mig.h: Likewise Message-Id: <20230116105857.240210-5-luca@orpolo.org>
* update syscall signature with rpc_vm_* and mach_port_name_tLuca Dariz2023-01-182-34/+37
| | | | | | | | | * include/mach/mach_types.h: use mach port names * kern/ipc_mig.c: update vm types and use copyin/copyout helpers * kern/ipc_mig.h: Likewise Signed-off-by: Luca Dariz <luca@orpolo.org> Message-Id: <20230116105857.240210-4-luca@orpolo.org>
* add msg_user_header_t for user-side msg structureLuca Dariz2023-01-181-1/+1
| | | | | | | | | | | * include/mach/message.h: use mach_msg_user_header_t only in KERNEL, and define it as mach_msh_header_t for user space * ipc/ipc_kmsg.c: use mach_msg_user_header_t where appropriate * ipc/ipc_kmsg.h: Likewise * ipc/mach_msg.c: Likewise * ipc/mach_msg.h: Likewise * kern/thread.h: Likewise Message-Id: <20230116105857.240210-2-luca@orpolo.org>
* Add static qualifiersFlavio Cruz2023-01-182-2/+2
| | | | | stack_statistics, swapin_thread_continue, and memory_object_lock_page are not used outside their module.
* fix warningsLuca Dariz2023-01-161-1/+1
| | | | | | | * ipc/ipc_kmsg.c: drop useless cast. * ipc/ipc_port.c: upcast rpc_vm_offset_t to full vm_offset_t * kern/pc_sample.c: Likewise Message-Id: <20230116130426.246584-4-luca@orpolo.org>
* add required includeLuca Dariz2023-01-161-0/+2
| | | | | | | * kern/syscall_sw.h: add missing include Signed-off-by: Luca Dariz <luca@orpolo.org> Message-Id: <20230116130426.246584-2-luca@orpolo.org>
* Delete ffs and strrchr prototypes.Flavio Cruz2023-01-151-21/+0
| | | | | | | | We use __builtin_ffs instead of ffs. strrchr is not used. Also removed the commented out memset implementation since it is implemented in arch-specific code. Message-Id: <Y8NOXbVzhBJknR29@mercury.tail36e24.ts.net>
* Create kern/mach4.h and kern/mach_host.h and define the RPC prototypes for ↵Flavio Cruz2023-01-1310-0/+242
| | | | | | | mach4.defs and mach_host.defs. Also move more mach_debug rpcs to kern/mach_debug.h. Message-Id: <Y7+LPMLOafUQrNHZ@jupiter.tail36e24.ts.net>
* Preemptively fix warnings that will be caused by -Wmissing-prototypesFlavio Cruz2023-01-101-0/+40
| | | | | | | Declared RPCs in ipc/mach_port.c and ddb/db_ext_symtab.c in their corresponding headers. Ideally these should be used by mig instead of mig declaring its own prototypes. Message-Id: <Y7z/BQhmsBbRgxhe@jupiter.tail36e24.ts.net>
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