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2014-12-16kern: gracefully handle bogus sample pc sequence numberJustus Winter
If a sequence number larger than the sample control sequence number is supplied, `nsamples' becomes negative. Handle this gracefully. * kern/pc_sample.c (get_sampled_pcs): Handle bogus sequence number.
2014-12-16ipc: guard test code with `MACH_IPC_TEST'Justus Winter
* ipc/ipc_kmsg.h (ikm_mark_bogus): New macro. (ipc_kmsg_rmqueue_first_macro): Use `ikm_mark_bogus'. * ipc/ipc_kmsg.c (ipc_kmsg_rmqueue): Likewise.
2014-12-16ipc: tune size of cached kernel message buffersJustus Winter
The previous limit was 256 bytes. That seems a little crummy by todays standards, and we are frequently sending bigger packets (e.g. every RPC containing a string_t on Hurd). Use the page size for IKM_SAVED_KMSG_SIZE to make sure the page is pinned to a single processor. * ipc/ipc_kmsg.h (IKM_SAVED_KMSG_SIZE): Define to `PAGE_SIZE'.
2014-12-15Make spl7 just clear IF instead of setting the PIC maskSamuel Thibault
* i386/i386/spl.S (spl7): Just set curr_ipl and cli. (splx) [MACH_KDB || MACH_TTD]: When curr_ipl is 7, make sure that IF is cleared. (splx): When staying at ipl7, do not enable interrupts. (spl) [MACH_KDB || MACH_TTD]: When curr_ipl is 7, make sure that IF is cleared. (spl): When new ipl is 7, branch to spl7. * i386/i386/locore.S (TIME_TRAP_UENTRY, TIME_TRAP_SENTRY): Save flags, and restore them instead of blindly using sti.
2014-12-11Ship missing fileSamuel Thibault
* Makefrag.am (EXTRA_DIST): Add kern/task_notify.cli.
2014-12-09include: add X_IMPORTS to ipc definitionsJustus Winter
This makes it possible to inject imports. * include/mach/gnumach.defs: Make it possible to inject imports. * include/mach/mach.defs: Likewise. * include/mach/mach_host.defs: Likewise.
2014-12-09kern: provide notifications about new tasksJustus Winter
These notifications are sent to the port registered via `register_new_task_notification' and provide a robust parental relation between tasks to a userspace server. * Makefrag.am: Add task_notify.defs. * include/mach/gnumach.defs: Add register_new_task_notification. * include/mach/task_notify.defs: New file. * kern/task.c (new_task_notification): New variable. (task_create): Send new task notifications. (register_new_task_notification): Add server function. * kern/task_notify.cli: New file.
2014-12-09Retire procedure `old_mach_port_get_receive_status'Justus Winter
Retire the compatibility RPC `old_mach_port_get_receive_status' that works like `mach_port_get_receive_status' but returns an `old_mach_port_status' object that lacks the `mps_seqno' field. Do not remove the type yet, so we do not break anyones build. The RPC stubs currently distributed with the glibc require it. * include/mach/mach_port.defs (old_mach_port_get_receive_status): Drop RPC. * include/mach/mach_types.defs (old_mach_port_status_t): Drop type. * include/mach/port.h (old_mach_port_status_t): Add note to remove this for the 1.6 release. * ipc/mach_port.c (old_mach_port_get_receive_status): Drop function.
2014-12-07Fix pthread_create warning on translator terminationSamuel Thibault
This was due to task_terminate not actually properly suspending threads before disable the task port, which was thus preventing pthread_create from being able to create a stack. Thanks Gabriele Giacone for finding out a reproducer of this. * kern/task.h (task_hold_locked): New declaration. * kern/task.c (task_hold): Move the locked part of the code into... (task_hold_locked): ... new function. (task_terminate): Call task_hold_locked just before deactivating the task. Call ipc_task_disable after waiting for threads to actually suspend with task_dowait.
2014-12-01kern: disable all counters by defaultJustus Winter
Make all five non-conditional counters conditional ones. Casual checking revealed that the hits-to-miss ratio is excellent. * kern/counters.c: Make all counters conditional. * kern/counters.h: Likewise. * kern/ipc_sched.c: Likewise. * kern/sched_prim.c: Likewise.
2014-11-28include: make `mach_port_t' payload-awareJustus Winter
Honor a new macro `MACH_PAYLOAD_TO_PORT' to inject a translation function mapping payloads to port names in the definition of `mach_port_t'. * include/mach/std_types.defs (mach_port_t): Honor `MACH_PAYLOAD_TO_PORT'. * include/device/device.defs (reply_port_t): Likewise. * include/device/device_reply.defs (reply_port_t): Likewise. * include/device/device_request.defs (reply_port_t): Likewise.
2014-11-23Fix programming PIT counterSamuel Thibault
* linux/dev/arch/i386/kernel/irq.c (init_IRQ): Properly mask 8 bits of PIT counter.
2014-11-21Correct GCC's -Wformat-security issuesDavid Michael
* linux/pcmcia-cs/clients/axnet_cs.c (axdev_init): Add a format string literal where printk only has a single variable argument. * linux/src/drivers/net/3c507.c (el16_probe1): Likewise. * linux/src/drivers/net/3c509.c (el3_probe): Likewise. * linux/src/drivers/net/3c515.c (init_module): Likewise. (tc515_probe): Likewise. * linux/src/drivers/net/ac3200.c (ac_probe1): Likewise. * linux/src/drivers/net/apricot.c (apricot_probe): Likewise. * linux/src/drivers/net/at1700.c (at1700_probe1): Likewise. * linux/src/drivers/net/de4x5.c (de4x5_hw_init): Likewise. * linux/src/drivers/net/de600.c (de600_probe): Likewise. * linux/src/drivers/net/de620.c (de620_probe): Likewise. * linux/src/drivers/net/depca.c (depca_hw_init): Likewise. * linux/src/drivers/net/e2100.c (e21_probe1): Likewise. * linux/src/drivers/net/eepro.c (eepro_probe1): Likewise. * linux/src/drivers/net/eepro100.c (speedo_found1): Likewise. * linux/src/drivers/net/eexpress.c (eexp_hw_probe): Likewise. * linux/src/drivers/net/ewrk3.c (ewrk3_hw_init): Likewise. * linux/src/drivers/net/fmv18x.c (fmv18x_probe1): Likewise. * linux/src/drivers/net/hp-plus.c (hpp_probe1): Likewise. * linux/src/drivers/net/hp.c (hp_probe1): Likewise. * linux/src/drivers/net/lance.c (lance_probe1): Likewise. * linux/src/drivers/net/ne.c (ne_probe1): Likewise. * linux/src/drivers/net/pcnet32.c (pcnet32_probe1): Likewise. * linux/src/drivers/net/seeq8005.c (seeq8005_probe1): Likewise. * linux/src/drivers/net/smc-ultra.c (ultra_probe1): Likewise. * linux/src/drivers/net/smc-ultra32.c (ultra32_probe1): Likewise. * linux/src/drivers/net/wd.c (wd_probe1): Likewise.
2014-11-16Only set debug registers when they are usedSamuel Thibault
* i386/i386/db_interface.c (zero_dr): New variable (db_load_context): Do not set debug registers to zero when they are already zero. (db_dr): When kernel debug registers get zero, record that the debug registers have been zeroed.
2014-11-13Add nodma optionsSamuel Thibault
Some very slow qemu instances would eventually trigger DMA timeouts, let's give a way to disable DMA there, it does not actually slow down operations anyway. * linux/src/drivers/block/ide.h (ide_drive_s): Add nodma field. * linux/src/drivers/block/ide.c (do_identify): Do not call dmaproc(ide_dma_check) when nodma is 1. (ide_setup): Add nodma option.
2014-11-12Pass ide and hd kernel options to ide driverSamuel Thibault
* linux/dev/drivers/block/genhd.c: Include <linux/hdreg.h> and <alloca.h> (device_setup): Look for ide and hd options, and call ide_setup with them. * linux/src/drivers/block/ide.c (ide_setup) [MACH]: Parse hd[0-7] instead of hd[a-h].
2014-11-10Fix documentation for vm_mapSamuel Thibault
doc/mach.texi (vm_map): Document that vm_map uses the address as a starting hint even when anywhere is TRUE.
2014-11-10Revert "Make vm_map really ignore `address' when `anywhere' is true"Samuel Thibault
This reverts commit 5ae510e35c54009626999a88f0f1cb34d6dfc94f.
2014-11-03include: add a payload-aware intran mutator for device_tJustus Winter
* include/device/device_types.defs (device_t): Add a payload-aware intran mutator.
2014-11-03include: add a payload-aware intran mutator for notify_port_tJustus Winter
* include/mach/notify.defs (notify_port_t): Add a payload-aware intran mutator.
2014-11-03include: add a payload-aware intran mutator for memory_object_tJustus Winter
* include/mach/mach_types.defs (memory_object_t): Add a payload-aware intran mutator. * include/mach/memory_object.defs: Likewise in the inlined type declarations.
2014-11-03Fix link refusalSamuel Thibault
* Makefile.am (clib-routines.o): Refuse to link only when multiarch is detected.
2014-11-03Refuse to link against a libc with multiarch supportSamuel Thibault
We don't have support for this yet. * Makefile.am (clib-routines.o): Check for the presence of __init_cpu_features, and in such case refuse to continue.
2014-11-02Fix build when gcc avoids inliningSamuel Thibault
* ipc/ipc_port.h (ipc_port_flag_protected_payload, ipc_port_flag_protected_payload_set, ipc_port_flag_protected_payload_clear): Use static inline qualifier instead of extern inline.
2014-10-22Revert "Make sure mig is available"Samuel Thibault
This reverts commit b28e05e203e0739fa5db59c5af378b29eea7a232.
2014-10-10doc: restore section `Inherited Ports'Justus Winter
Previously, the section `Inherited Ports' was commented out. This was done, as the functionality was unused by the Hurd. The functions `mach_ports_register' and `mach_ports_lookup' were never removed, and are exposed to user space. This patch brings the documentation back and adds a remark at the top, that the section documents the original intentions for this interface. I chose bringing back the documentation over removing the functionality because I like to make use of it as a method for service discovery that is deliberately orthogonal to the way the service lookup is usually done in the Hurd. This can be used to implement robust low-level debugging facilities. * doc/mach.texi: Restore section `Inherited Ports'.
2014-10-01Add protected payloads to NEWSJustus Winter
2014-10-01ipc: provide the protected payload in ipc_kmsg_copyout_headerJustus Winter
* ipc/ipc_kmsg.c (ipc_kmsg_copyout_header): If a protected payload is set for the destination port, provide it in msgh_protected_payload. * ipc/mach_msg.c (mach_msg_trap): Likewise in the fast paths. * doc/mach.texi (Message Receive): Document message semantics with protected payloads.
2014-10-01include: define MACH_MSG_TYPE_PROTECTED_PAYLOADJustus Winter
* include/mach/message.h: Define MACH_MSG_TYPE_PROTECTED_PAYLOAD. (MACH_MSG_TYPE_LAST): Adjust accordingly. * doc/mach.texi (Message Format): Document MACH_MSG_TYPE_PROTECTED_PAYLOAD.
2014-10-01include: add msgh_protected_payload to mach_msg_header_tJustus Winter
* include/mach/message.h (mach_msg_header_t): Add msgh_protected_payload as a union with msgh_local_port. * doc/mach.texi (Message Format): Document msgh_protected_payload.
2014-10-01ipc: implement mach_port_{set,clear}_protected_payloadJustus Winter
* include/mach/mach_port.defs: Add mach_port_{set,clear}_protected_payload. * ipc/mach_port.c: Implement mach_port_{set,clear}_protected_payload. * doc/mach.texi (Receive Rights): Document mach_port_{set,clear}_protected_payload.
2014-10-01ipc: add protected payloadJustus Winter
Add a field ip_protected_payload and a flag ip_has_protected_payload to struct ipc_port. Clear the protected payload when a receive port is moved from one ipc space to another. This is done to retain the old behavior of mach_msg, so that a port name is sent in the msgh_local_port field. If the new owner of that receive right wishes to use the protected payload mechanism, it has to be explicitly set again. * ipc/ipc_port.h (struct ipc_port): Add field ip_protected_payload. (ipc_port_set_protected_payload): Add function declaration. (ipc_port_clear_protected_payload): Likewise. (ipc_port_flag_protected_payload): Add accessor for the protected payload flag. (ipc_port_flag_protected_payload_set): Likewise. (ipc_port_flag_protected_payload_clear): Likewise. * ipc/ipc_port.c (ipc_port_init): Initialize protected payload. (ipc_port_print): Print protected_payload. (ipc_port_set_protected_payload): New function. (ipc_port_clear_protected_payload): Likewise. (ipc_port_destroy): Clear the payload when moving a receive port. * ipc/ipc_right.c (ipc_right_copyin): Likewise. (ipc_right_copyout): Likewise. * ipc/ipc_object.c (ipc_object_copyin_from_kernel): Likewise. * ipc/ipc_object.h (IO_BITS_PROTECTED_PAYLOAD): New bitmask. (IO_BITS_OTYPE): Adjust accordingly.
2014-09-30ipc: use fast modulo operation in local hash tableJustus Winter
* ipc/ipc_table.h: Document that table sizes must be powers of two. * ipc/ipc_hash.c (IH_LOCAL_HASH): Use fast modulo operation.
2014-09-30kern: silence compiler warning about uninitialized variableJustus Winter
* kern/slab.c (kmem_cache_compute_sizes): Initialize optimal_size and assert that a size is selected.
2014-09-30kern: fix type of recompute_prioritiesJustus Winter
* kern/sched_prim.c (recompute_priorities): Fix type. * kern/sched_prim.h (recompute_priorities): Likewise.
2014-09-26kern: create send rights as they are inserted at bootstrap timeJustus Winter
Previously, it was impossible to hand e.g. the master device port to more than one bootstrap task. Fix this by creating the send right as it is inserted into the target task. * kern/bootstrap.c (bootstrap_create): Do not create the send rights here... (boot_script_insert_right): ... but here.
2014-09-25Update NEWS fileJustus Winter
2014-09-17ddb: add support for ELF symbol tablesJustus Winter
* ddb/db_elf.c: New file. * ddb/db_elf.h: Likewise. * Makefrag.am (libkernel_a_SOURCES): Add db_elf.{c,h}. * ddb/db_sym.c (dummy_db_sym_init): New stub db_sym_init function. (db_sym_switch): Add ELF functions. * ddb/db_sym.h (SYMTAB_ELF): New macro. (elf_db_sym_init): New declaration. * i386/i386at/model_dep.c (c_boot_entry): Get ELF section header information from the multiboot structure, and call elf_db_sym_init.
2014-09-17ddb: add `show all tasks' commandJustus Winter
* ddb/db_command.c (db_show_all_cmds): Add `tasks'. * ddb/db_print.c (db_show_all_tasks): New function. * ddb/db_print.h (db_show_all_tasks): New prototype.
2014-09-17Report DR6 to userlandSamuel Thibault
* i386/i386/trap.c (user_trap): On T_DEBUG, record the content of dr6 in PCB, and clear it.
2014-09-06Make vm_map really ignore `address' when `anywhere' is trueSamuel Thibault
As vm_allocate does. * vm/vm_user.c (vm_map): When `anywhere' is true, set `address' to the minimum address of the `target_map'.
2014-09-01Fix printf warningPietro Braione
linux/src/drivers/net/sundance.c (start_tx): Fix format string according to parameter.
2014-08-30Tune pageout parametersSamuel Thibault
This targets having always at least 8% free memory instead of just 1%. This has shown improving buildd stability a lot. Also increase the reserved amount to nowadays standards. * vm/vm_pageout.c (VM_PAGE_FREE_TARGET): Increase to 10%. (VM_PAGE_FREE_MIN): Increase to 8%. (VM_PAGE_FREE_RESERVED): Increase to 500 pages. (VM_PAGEOUT_RESERVED_INTERNAL): Increase to 150 pages. (VM_PAGEOUT_RESERVED_REALLY): Increase to 100 pages.
2014-08-30Increate the pageout thread prioritySamuel Thibault
* vm/vm_pageout.c (vm_pageout): Set the priority to 0.
2014-08-30Bump NR_GRANT_PAGESSamuel Thibault
This has shown needed on buildds with several disks and network interfaces. * xen/grant.c (NR_GRANT_PAGES): Increase from 4 to 8.
2014-08-22Fix computationSamuel Thibault
* i386/i386at/com.c (comintr): Fix computation of '@'.
2014-08-22Even less magic-looking control valueNeal H. Walfield
* i386/i386at/com.c (comintr): Use 'A'-1 instead of '@'.
2014-08-22Support invoking the debugger over the serial consoleJustus Winter
* i386/i386at/com.c (comintr): Invoke the debugger if ctrl-alt-d is pressed. * i386/i386at/com.h (kdb_kintr): Add declaration.
2014-07-25Drop debugging printsSamuel Thibault
* i386/i386at/acpi.c (grub_machine_acpi_get_rsdpv2): Drop debugging prints.
2014-07-06Do not unmap page 0 when not neededSamuel Thibault
Since we need it to access some BIOS information, e.g. at ACPI shutdown. When the kernel VM is not starting at 0, there is already nothing mapped there in user tasks, anyway. * i386/i386at/model_dep.c (machine_init) [VM_MIN_KERNEL_ADDRESS != 0]: Do not call pmap_unmap_page_zero. * i386/intel/pmap.c (pmap_unmap_page_zero): Warn that unmapping page zero may break some BIOS functions.
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