12817 Commits

Author SHA1 Message Date
Dmitry Chagin
4048f59cd0 Add AT_RANDOM and AT_EXECFN auxiliary vector entries which are used by
glibc. At list since glibc version 2.16 using AT_RANDOM is mandatory.

Differential Revision:	https://reviews.freebsd.org/D1080
2015-05-24 16:24:24 +00:00
Dmitry Chagin
0a1884d768 Regen for r283428. 2015-05-24 16:19:57 +00:00
Dmitry Chagin
baa232bbfd Change linux faccessat syscall definition to match actual linux one.
The AT_EACCESS and AT_SYMLINK_NOFOLLOW flags are actually implemented
within the glibc wrapper function for faccessat().  If either of these
flags are specified, then the wrapper function employs fstatat() to
determine access permissions.

Differential Revision:	https://reviews.freebsd.org/D1078
Reviewed by:	trasz
2015-05-24 16:18:03 +00:00
Dmitry Chagin
67d3974849 Introduce a new module linux_common.ko which is intended for the
following primary purposes:

1. Remove the dependency of linsysfs and linprocfs modules from linux.ko,
which will be architecture specific on amd64.

2. Incorporate into linux_common.ko general code for platforms on which
we'll support two Linuxulator modules (for both instruction set - 32 & 64 bit).

3. Move malloc(9) declaration to linux_common.ko, to enable getting memory
usage statistics properly.

Currently linux_common.ko incorporates a code from linux_mib.c and linux_util.c
and linprocfs, linsysfs and linux kernel modules depend on linux_common.ko.

Temporarily remove dtrace garbage from linux_mib.c and linux_util.c

Differential Revision:	https://reviews.freebsd.org/D1072
In collaboration with:	Vassilis Laganakos.

Reviewed by:	trasz
2015-05-24 15:51:18 +00:00
Dmitry Chagin
31eb438886 x86_64 Linux do not use multiplexing on ipc system calls.
Move struct ipc_perm definition to the MD path as it differs for 64 and
32 bit platform.

Differential Revision:	https://reviews.freebsd.org/D1068
Reviewed by:	trasz
2015-05-24 15:44:41 +00:00
Dmitry Chagin
26cf41d6ca Remove stale comment about a signal trampoline which
is moved to the shared page at r219609.

Differential Revision:	https://reviews.freebsd.org/D1063
Reviewed by:	trasz
2015-05-24 15:32:52 +00:00
Dmitry Chagin
0020bdf13a Put linux_platform into the vdso to avoid copying it onto the stack at
every exec.

Differential Revision:	https://reviews.freebsd.org/D1062
Reviewed by:	trasz
2015-05-24 15:30:52 +00:00
Dmitry Chagin
32084836c0 Eliminate a now unused global declaration of elf_linux_sysvec.
Differential Revision:	https://reviews.freebsd.org/D1061
Reviewed by:	trasz
2015-05-24 15:29:20 +00:00
Dmitry Chagin
bdc379344a Implement vdso - virtual dynamic shared object. Through vdso Linux
exposes functions from kernel with proper DWARF CFI information so that
it becomes easier to unwind through them.
Using vdso is a mandatory for a thread cancelation && cleanup
on a modern glibc.

Differential Revision:	https://reviews.freebsd.org/D1060
2015-05-24 15:28:17 +00:00
Dmitry Chagin
b2e0aad9e5 Regen for r283403. 2015-05-24 15:22:33 +00:00
Dmitry Chagin
ae50b4d7b5 Implement pselect6() system call.
Differential Revision:	https://reviews.freebsd.org/D1051
Reviewed by:	trasz
2015-05-24 15:21:25 +00:00
Dmitry Chagin
e7fa9de6eb Regen for r283401. 2015-05-24 15:19:44 +00:00
Dmitry Chagin
c3978c7bb1 Implement prlimit64() system call.
Differential Revision:	https://reviews.freebsd.org/D1050
Reviewed by:	emaste, trasz
2015-05-24 15:18:19 +00:00
Dmitry Chagin
737325a46d Regen for r283399. 2015-05-24 15:15:46 +00:00
Dmitry Chagin
254a937ee5 Implement dup3() system call.
Differential Revision:	https://reviews.freebsd.org/D1049
Reviewed by:	emaste
2015-05-24 15:14:51 +00:00
Dmitry Chagin
f680d990e8 Regen for r283396. 2015-05-24 15:12:38 +00:00
Dmitry Chagin
7ac9766db4 Implement rt_sigqueueinfo() system call.
Differential Revision:	https://reviews.freebsd.org/D1047
Reviewed by:	trasz
2015-05-24 15:11:32 +00:00
Dmitry Chagin
e4454275a5 Regen for r283394. 2015-05-24 15:08:25 +00:00
Dmitry Chagin
e5fe4ccf59 Implement waitid() system call.
Differential Revision:	https://reviews.freebsd.org/D1046
2015-05-24 15:06:39 +00:00
Dmitry Chagin
18599d43e9 Regen for r283392. 2015-05-24 15:05:22 +00:00
Dmitry Chagin
28ca9c9e0b struct l_rusage does not defined for i386 Linuxulator due to it's nature.
Differential Revision:	https://reviews.freebsd.org/D2139
2015-05-24 15:04:12 +00:00
Dmitry Chagin
001398c4c5 To reduce code duplication introduce linux_copyout_rusage() method.
Use it in linux_wait4() system call and move linux_wait4() to the MI path.
While here add a prototype for the static bsd_to_linux_rusage().

Differential Revision:	https://reviews.freebsd.org/D2138
Reviewed by:	trasz
2015-05-24 15:03:09 +00:00
Dmitry Chagin
af682d487b Some style(9) && whitespaces fixes. No functional changes.
Differential Revision:	https://reviews.freebsd.org/D1041
Reviewed by:	emaste
2015-05-24 14:55:12 +00:00
Dmitry Chagin
81338031c4 Switch linuxulator to use the native 1:1 threads.
The reasons:
1. Get rid of the stubs/quirks with process dethreading,
   process reparent when the process group leader exits and close
   to this problems on wait(), waitpid(), etc.
2. Reuse our kernel code instead of writing excessive thread
   managment routines in Linuxulator.

Implementation details:

1. The thread is created via kern_thr_new() in the clone() call with
   the CLONE_THREAD parameter. Thus, everything else is a process.
2. The test that the process has a threads is done via P_HADTHREADS
   bit p_flag of struct proc.
3. Per thread emulator state data structure is now located in the
   struct thread and freed in the thread_dtor() hook.
   Mandatory holdig of the p_mtx required when referencing emuldata
   from the other threads.
4. PID mangling has changed. Now Linux pid is the native tid
   and Linux tgid is the native pid, with the exception of the first
   thread in the process where tid and pid are one and the same.

Ugliness:

   In case when the Linux thread is the initial thread in the thread
   group thread id is equal to the process id. Glibc depends on this
   magic (assert in pthread_getattr_np.c). So for system calls that
   take thread id as a parameter we should use the special method
   to reference struct thread.

Differential Revision:	https://reviews.freebsd.org/D1039
2015-05-24 14:53:16 +00:00
Dmitry Chagin
91d1786f65 In preparation for switching linuxulator to the use the native 1:1
threads add a hook for cleaning thread resources before the thread die.

Differential Revision:	https://reviews.freebsd.org/D1038
2015-05-24 14:51:29 +00:00
Dmitry Chagin
64cfe4dc38 Regen for r283379. 2015-05-24 14:47:00 +00:00
Dmitry Chagin
2003907d45 Implement a Linux version of sched_getparam() && sched_setparam().
Temporarily use the first thread in proc.

Differential Revision:	https://reviews.freebsd.org/D1036
Reviewed by:	trasz
2015-05-24 14:45:57 +00:00
Dmitry Chagin
37588665e4 Regen for r283375. 2015-05-24 14:43:06 +00:00
Dmitry Chagin
e7b198ab02 In preparation for switching linuxulator to the use the native 1:1
threads use MI linux_sched_rr_get_interval() in i386.

Differential Revision:	https://reviews.freebsd.org/D1033
Reviewed by:	trasz
2015-05-24 14:40:41 +00:00
Dmitry Chagin
8c744294fe Regen for r283370. 2015-05-24 14:34:46 +00:00
Dmitry Chagin
161acbb670 In preparation for switching linuxulator to the use the native 1:1
threads introduce linux_exit() stub instead of sys_exit() call
(which terminates process).
In the new linuxulator exit() system call terminates the calling
thread (not a whole process).

Differential Revision:	https://reviews.freebsd.org/D1027
Reviewed by:	trasz
2015-05-24 14:33:19 +00:00
Dmitry Chagin
1d80c8a8f0 In preparation for switching linuxulator to the use the native 1:1
threads print the thread id in addition to the pid in debug messages.
2015-05-24 14:29:35 +00:00
Jung-uk Kim
fd90e2ed54 CALLOUT_MPSAFE has lost its meaning since r141428, i.e., for more than ten
years for head.  However, it is continuously misused as the mpsafe argument
for callout_init(9).  Deprecate the flag and clean up callout_init() calls
to make them more consistent.

Differential Revision:	https://reviews.freebsd.org/D2613
Reviewed by:	jhb
MFC after:	2 weeks
2015-05-22 17:05:21 +00:00
Pedro F. Giffuni
cd508278c1 ddb: finish converting boolean values.
The replacement started at r283088 was necessarily incomplete without
replacing boolean_t with bool.  This also involved cleaning some type
mismatches and ansifying old C function declarations.

Pointed out by:	bde
Discussed with:	bde, ian, jhb
2015-05-21 15:16:18 +00:00
Jim Harris
6e3471bd0b Add nvme and nvd drivers to GENERIC for amd64 and i386.
MFC after:	3 days
Sponsored by:	Intel
2015-05-14 20:19:22 +00:00
Edward Tomasz Napierala
ba8f0eb8fc Build GENERIC with RACCT/RCTL support by default. Note that it still
needs to be enabled by adding "kern.racct.enable=1" to /boot/loader.conf.

Differential Revision:	https://reviews.freebsd.org/D2407
Reviewed by:	emaste@, wblock@
MFC after:	1 month
Relnotes:	yes
Sponsored by:	The FreeBSD Foundation
2015-05-14 14:03:55 +00:00
Konstantin Belousov
7b445033ff On exec, single-threading must be enforced before arguments space is
allocated from exec_map.  If many threads try to perform execve(2) in
parallel, the exec map is exhausted and some threads sleep
uninterruptible waiting for the map space.  Then, the thread which won
the race for the space allocation, cannot single-thread the process,
causing deadlock.

Reported and tested by:	pho (previous version)
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2015-05-10 09:00:40 +00:00
Konstantin Belousov
b57a73f8e7 If x86 CPU implementation of the MWAIT instruction reasonably
interacts with interrupts, query ACPI and use MWAIT for entrance into
Cx sleep states.  Support C1 "I/O then halt" mode.  See Intel'
document 302223-007 "Intelб╝ Processor Vendor-Specific ACPI Interface
Specification" for description.

Move the acpi_cpu_c1() function into x86/cpu_machdep.c and use
it instead of inlining "sti; hlt" sequence in several places.

In the acpi(4) man page, besides documenting the dev.cpu.N.cx_methods
sysctl, correct the names for dev.cpu.N.{cx_usage,cx_lowest,cx_supported}
sysctls.

Both jkim and avg have some other patches implementing the mwait
functionality; this work is unrelated.  Linux does not rely on the
ACPI to provide correct tables describing Cx modes.  Instead, the
driver has pre-defined knowledge of the CPU models, it was supplied by
Intel.

Tested by:    pho (previous versions)
Sponsored by:	The FreeBSD Foundation
2015-05-09 12:28:48 +00:00
John Baldwin
ed95805e90 Remove support for Xen PV domU kernels. Support for HVM domU kernels
remains.  Xen is planning to phase out support for PV upstream since it
is harder to maintain and has more overhead.  Modern x86 CPUs include
virtualization extensions that support HVM guests instead of PV guests.
In addition, the PV code was i386 only and not as well maintained recently
as the HVM code.
- Remove the i386-only NATIVE option that was used to disable certain
  components for PV kernels.  These components are now standard as they
  are on amd64.
- Remove !XENHVM bits from PV drivers.
- Remove various shims required for XEN (e.g. PT_UPDATES_FLUSH, LOAD_CR3,
  etc.)
- Remove duplicate copy of <xen/features.h>.
- Remove unused, i386-only xenstored.h.

Differential Revision:	https://reviews.freebsd.org/D2362
Reviewed by:	royger
Tested by:	royger (i386/amd64 HVM domU and amd64 PVH dom0)
Relnotes:	yes
2015-04-30 15:48:48 +00:00
Wei Hu
da2f98a1cf Microsoft vmbus, storage and other related driver enhancements for HyperV.
- Vmbus multi channel support.
    - Vector interrupt support.
    - Signal optimization.
    - Storvsc driver performance improvement.
    - Scatter and gather support for storvsc driver.
    - Minor bug fix for KVP driver.
Thanks royger, jhb and delphij from FreeBSD community for the reviews
and comments. Also thanks Hovy Xu from NetApp for the contributions to
the storvsc driver.

PR:     195238
Submitted by:   whu
Reviewed by:    royger, jhb, delphij
Approved by:    royger
MFC after:      2 weeks
Relnotes:       yes
Sponsored by:   Microsoft OSTC
2015-04-29 10:12:34 +00:00
Konstantin Belousov
02c26f81a7 Move common code from sys/i386/i386/mp_machdep.c and
sys/amd64/amd64/mp_machdep.c, to the new common x86 source
sys/x86/x86/mp_x86.c.

Proposed and reviewed by:	jhb
Review:	https://reviews.freebsd.org/D2347
Sponsored by:	The FreeBSD Foundation
2015-04-24 16:20:56 +00:00
John Baldwin
179fa75e6e Reassign copyright statements on several files from Advanced
Computing Technologies LLC to Hudson River Trading LLC.

Approved by:	Hudson River Trading LLC (who owns ACT LLC)
MFC after:	1 week
2015-04-23 14:22:20 +00:00
Konstantin Belousov
dfe7b3bfbc Move some common code from sys/amd64/amd64/machdep.c and
sys/i386/i386/machdep.c to new file sys/x86/x86/cpu_machdep.c.  Most
of the code is related to the idle handling.

Discussed with:	pluknet
Sponsored by:	The FreeBSD Foundation
2015-04-22 12:32:14 +00:00
Konstantin Belousov
19b5b56d7f Remove duplicate definitions of MWAIT_CX hints. Identical defines in
specialreg.h are enough.

Discussed with:	mav
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-04-20 08:25:55 +00:00
Konstantin Belousov
1c8e7232b4 Remove lazy pmap switch code from i386. Naive benchmark with md(4)
shows no difference with the code removed.

On both amd64 and i386, assert that a released pmap is not active.

Proposed and reviewed by:	alc
Discussed with:	Svatopluk Kraus <onwahe@gmail.com>, peter
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2015-04-18 21:23:16 +00:00
Konstantin Belousov
34c15db9cd Add config option PAE_TABLES for the i386 kernel. It switches pmap to
use PAE format for the page tables, but does not incur other
consequences of the full PAE config.  In particular, vm_paddr_t and
bus_addr_t are left 32bit, and max supported memory is still limited
by 4GB.

The option allows to have nx permissions for memory mappings on i386
kernel, while keeping the usual i386 KBI and avoiding the kernel data
sizing problems typical for the PAE config.

Intel documented that the PAE format for page tables is available
starting with the Pentium Pro, but it is possible that the plain
Pentium CPUs have the required support (Appendix H).  The goal is to
enable the option and non-exec mappings on i386 for the GENERIC
kernel.  Anybody wanting a useful system on 486, have to reconfigure
the modern i386 kernel anyway.

Discussed with:	alc, jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2015-04-13 15:22:45 +00:00
Konstantin Belousov
a7496c776d Explain that vm_page_array is mapped to describe the memory, not the
memory itself.  Provide the formula to calculate the number of
required page tables.  Correct the size of the struct vm_page for
non-PAE case.

Reviewed by:	alc, jhb (previous version)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-04-08 19:46:13 +00:00
Ryan Stone
f2c2231e0c Fix integer truncation bug in malloc(9)
A couple of internal functions used by malloc(9) and uma truncated
a size_t down to an int.  This could cause any number of issues
(e.g. indefinite sleeps, memory corruption) if any kernel
subsystem tried to allocate 2GB or more through malloc.  zfs would
attempt such an allocation when run on a system with 2TB or more
of RAM.

Note to self: When this is MFCed, sparc64 needs the same fix.

Differential revision:	https://reviews.freebsd.org/D2106
Reviewed by:	kib
Reported by:	Michael Fuckner <michael@fuckner.net>
Tested by:	Michael Fuckner <michael@fuckner.net>
MFC after:	2 weeks
2015-04-01 12:42:26 +00:00
John Baldwin
2f22c84c31 Wait 100 microseconds for a local APIC to dispatch each startup-related IPI
rather than 20.  The MP 1.4 specification states in Appendix B.2:

  "A period of 20 microseconds should be sufficient for IPI dispatch to
   complete under normal operating conditions".

(Note that this appears to be separate from the 10 millisecond (INIT) and
200 microsecond (STARTUP) waits after the IPIs are dispatched.)  The
Intel SDM is silent on this issue as far as I can tell.

At least some hardware requires 60 microseconds as noted in the PR, so
bump this to 100 to be on the safe side.

PR:		197756
Reported by:	zaphod@berentweb.com
MFC after:	1 week
2015-03-30 20:13:22 +00:00
John Baldwin
86750039c6 Apply r276208 to non-amd64 NOTES files as well to fix tinderbox builds
run under a system using vt(4) instead of syscons(4):

Use compiled in default keymaps which are available both in syscons and vt.
2015-03-25 15:51:41 +00:00