Variant I architectures use off and Variant II ones use size + off.
Define TLS_VARIANT_I/TLS_VARIANT_II symbols similarly to how libc
handles it.
Reviewed by: kib
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D31539
Differential revision: https://reviews.freebsd.org/D31541
For a Variant II architecture, the TP offset of a TLS symbol is st_value -
tlsoffset + r_addend. tlsoffset is computed by either calculate_tls_offset
or calculate_first_tls_offset.
The return value of calculate_first_tls_offset is the smallest integer
satisfying res >= size and (-res) % p_align = p_vaddr % p_align
(= p_offset % p_align). (The formula is a bit contrived. The basic idea
is to subtract the minimum integer from size + align - 1 so that the result
ihas the expected remainder.)
Reviewed by: kib
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D31538
Differential revision: https://reviews.freebsd.org/D31541
This causes build failures on macOS where the build can end up invoking
an incompatible m4 binary.
Fxies: 2de949cf85 ("Remove mkcsmapper_static and mkesdb_static from build-tools")
I can see two concerns for adding domains after domainfinalize:
1.) The slow/fast callouts have already been setup.
2.) Userland could create a socket while we're in the middle of
initialization.
We can address #1 fairly easily by tracking whether the domain's been
initialized for at least the default vnet. There are still some concerns
about the callbacks being invoked while a vnet is in the process of
being created/destroyed, but this is a pre-existing issue that the
callbacks must coordinate anyways.
We should also address #2, but technically this has been an issue
anyways because we don't assert on post-domainfinalize additions; we
don't seem to hit it in practice.
Future work can fix that up to make sure we don't find partially
constructed domains, but care must be taken to make sure that at least,
e.g., the usages of pffindproto in ip_input.c can still find them.
Differential Revision: https://reviews.freebsd.org/D25459
This gives any given domain a chance to indicate that it's not actually
supported on the current system. If dom_probe isn't supplied, we assume
the domain is universally applicable as most of them are. Keeping
fully-initialized and registered domains around that physically can't
work on a large majority of FreeBSD deployments is sub-optimal and leads
to errors that aren't consistent with the reality of why the socket
can't be created (e.g. ESOCKTNOSUPPORT) because such scenario has to be
caught upon pru_attach, at which point kicking back the more-appropriate
EAFNOSUPPORT would seem weird.
The initial consumer of this will be hvsock, which is only available on
HyperV guests.
Reviewed by: cem (earlier version), bcr (manpages)
Differential Revision: https://reviews.freebsd.org/D25062
Validate the irq received from ACPI. Test if it works by sending a simple command and checking if the interrupt handler was executed.
Internal buffer allocation was moved away from common code to tis and crb parts - in order to test the interrupt we need to have it allocated early.
Obtained from: Semihalf
Differential revision: https://reviews.freebsd.org/D31395
* Allow to do validation/performance tests by using process
fib instead of default fib 0.
* Print all validation errors instead of just the first one.
MFC after: 1 week
The keyword adds nothing as all operations on the var are performed
through atomic_*
Reviewed by: kp
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D31528
The keyword adds nothing as all operations on the var are performed
through atomic_*
Reviewed by: kp
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D31526
rtsold works fine for point to point interfaces in manual mode but will
not auto-probe them.
Reviewed by: markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31517
This removes the dependency on /dev/io.
PR: 251046
Reviewed by: jhb
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31308
This is useful for bhyve, which otherwise has to use /dev/io to handle
accesses to I/O port BARs when PCI passthrough is in use.
Reviewed by: imp, kib
Discussed with: jhb
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31307
Add support for 'VDSO_TH_ALGO_X86_PVCLK'; add vDSO-based timekeeping for
devices that support the KVM/XEN paravirtual clock API.
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D31418
Add vDSO support for timekeeping devices that support the KVM/XEN
paravirtual clock API.
Also, expose, in the userspace-accessible '<machine/pvclock.h>',
definitions that will be needed by 'libc' to support
'VDSO_TH_ALGO_X86_PVCLK'.
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D31418
Add support for the KVM paravirtual clock device.
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D29733
Consolidate more hypervisor-agnostic functionality behind a new 'struct
pvclock' API.
This should also make it easier to subsequently add hypervisor-agnostic
vDSO timekeeping support.
Also, perform some clean-up:
- Remove 'pvclock_get_last_cycles()'; do not allow external access
to 'pvclock_last_systime' since this is not necessary.
- Consolidate/simplify wall and system time reading codepaths.
- Ensure correct ordering within wall and system time reading
codepaths via 'atomic(9)' and 'rdtsc_ordered()' rather than via
'rmb()'.
- Remove some extra newlines.
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D31418
Make inclusion of `sys/x86/x86/pvclock.c` contingent on that of its
dependents.
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D31417
Add a variant of 'rdtsc()' that performs the ordered version of 'rdtsc'
appropriate for the invoking x86 variant.
Also, expose the 'lfence'-ed and 'mfence'-ed 'rdtsc()' variants needed
by 'rdtsc_ordered()' for general use.
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D31416
Add a variant of 'rdtscp()' that retains and returns the 'IA32_TSC_AUX'
value read by 'rdtscp'.
Sponsored By: Juniper Networks, Inc.
Sponsored By: Klara, Inc.
Reviewed by: markj, kib
Differential Revision: https://reviews.freebsd.org/D31415
This bug is no longer reproducible in 14.0-CURRENT and 13.0-RELEASE
Do not MFC to stable/12 !
PR: 251828
Reported by: markj
Reviewed by: markj
MFC after: 2 weeks
Sponsored by: Axcient
Differential Revision: https://reviews.freebsd.org/D31535
Set NIRES_EMPTYPATH earlies, to have use of EMPTYPATH recorded even if
we are going to return error. When namei_setup() refused to accept dirfd,
which is not of the vnode type, and indicated by ENOTDIR error return,
fall back to kern_fstat(dirfd).
Reported by: dchagin
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D31530
Remove ar_mode_* wrappers and call ar_read_archive / ar_write_archive
directly.
(This was originally committed in d20e9e02db but reverted due to a
regression, now fixed with an update from cy@.)
Obtained from: ELF Tool Chain
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31496
ufs_rename() calls ufs_checkpath() to ensure that the target directory
is not a child of the source. If not, rename would create a loop.
For instance:
source->X1->X2->target
and if source moved under target, we get corrupted filesystem.
Suppose that we initially have
source->X1 .... and X2->target
where X1 is not on path from root to X2. Then ufs_checkpath() accepts
the inodes, but there is nothing preventing parallel rename of X2 to become
under X1, after checkpath finished.
Ensure stability of ufs_checkpath() result by taking a per-mount sx in
ufs_rename right before ufs_checkpath() and till the end.
Reviewed by: chs, mckusick
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Drop exit status from bsdar_errc. ELF Tool Chain always returns
EXIT_FAILURE in bsdar_errc.
Recommit of one part of d20e9e02db / review D31496.
Obtained from: ELF Tool Chain
Sponsored by: The FreeBSD Foundation
If code calls arc4random(), and our RNG is not yet seeded and
random_bypass_before_seeding is true, we'll compute a key using the
SHA256 hash of some hopefully hard-to-predict data, including the
contents of an uninitialized stack buffer (which is also the output
buffer).
When KMSAN is enabled, this use of uninitialized state propagtes through
to the arc4random() output, resulting in false positives. To address
this, lie to KMSAN and explicitly mark the buffer as initialized.
Reviewed by: cem (previous version)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31510
newhook can be invoked by ngthread, which runs in a network epoch
section and is thus not permitted to perform M_WAITOK allocations.
Reported by: Jenkins
Reviewed by: donner, afedorov
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31486
lld rounds up p_memsz(PT_GNU_RELRO) to satisfy common-page-size. If the
page size is smaller than common-page-size, rounding up relro_size may
incorrectly make some RW pages read-only.
GNU ld, gold, and ld.lld ensures p_vaddr+p_memsz is a multiple of
common-page-size. While max-page-size >= system the page size,
common-page-size can be smaller than the system page size.
Submitted by: MaskRay
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D31498
Merge commit 2f57ecae4b
This is a new major release with a number of changes and extensions:
- Limited the number of temporary numbers and made the space for them
static so that allocating more space for them cannot fail.
- Allowed integers with non-zero scale to be used with power, places,
and shift operators.
- Added greatest common divisor and least common multiple to lib2.bc.
- Made bc and dc UTF-8 capable.
- Added the ability for users to have bc and dc quit on SIGINT.
- Added the ability for users to disable prompt and TTY mode by
environment variables.
- Added the ability for users to redefine keywords.
- Added dc's modular exponentiation and divmod to bc.
- Added the ability to assign strings to variables and array elements
and pass them to functions in bc.
- Added dc's asciify command and stream printing to bc.
- Added bitwise and, or, xor, left shift, right shift, reverse,
left rotate, right rotate, and mod functions to lib2.bc.
- Added the functions s2u(x) and s2un(x,n), to lib2.bc.
MFC after: 1 week
