Decouple the pageout cluster size from the size of the hash table entry
used by the swap pager for mapping (object, pindex) to a block on the
swap device(s), and keep the size of a hash table entry at its current
size.
Eliminate a pointless macro.
Reviewed by: kib, markj (an earlier version)
MFC after: 4 weeks
Differential Revision: https://reviews.freebsd.org/D11305
Rtld checks and use old MAP_ANON/PROT_NONE method of creating gap if
running on old kernel.
Reviewed by: alc, markj
Tested by: pho, Qualys
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Guard, requested by the MAP_GUARD mmap(2) flag, prevents the reuse of
the allocated address space, but does not allow instantiation of the
pages in the range. It is useful for more explicit support for usual
two-stage reserve then commit allocators, since it prevents accidental
instantiation of the mapping, e.g. by mprotect(2).
Use guards to reimplement stack grow code. Explicitely track stack
grow area with the guard, including the stack guard page. On stack
grow, trivial shift of the guard map entry and stack map entry limits
makes the stack expansion. Move the code to detect stack grow and
call vm_map_growstack(), from vm_fault() into vm_map_lookup().
As result, it is impossible to get random mapping to occur in the
stack grow area, or to overlap the stack guard page.
Enable stack guard page by default.
Reviewed by: alc, markj
Man page update reviewed by: alc, bjk, emaste, markj, pho
Tested by: pho, Qualys
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D11306 (man pages)
The issue is catched by "vm_map_wire: alien wire" KASSERT at the end
of the vm_map_wire(). We currently check for MAP_ENTRY_WIRE_SKIPPED
flag before ensuring that the wiring_thread is curthread. For HOLESOK
wiring, this means that we might see WIRE_SKIPPED entry from different
wiring.
The fix it by only checking WIRE_SKIPPED if the entry is put
IN_TRANSITION by us. Also fixed a typo in the comment explaining the
situation.
Reported and tested by: pho
Reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
H2+ SoC is a stripped down version of H3 without gigabit ethernet and 4K HDMI.
Also add sun8i-h2-plus-orangepi-zero.dts to the build as we run on this board.
The flag is not implemented, all FreeBSD architectures correctly
handle locks on normal cacheable mappings. On the other hand, the
flag was specified by some software, so it is kept in the header as
nop. Removal from the man page should discourage its use.
Reviewed by: alc, bjk, emaste, markj, pho
MFC after: 3 days
X-Differential revision: https://reviews.freebsd.org/D11306
The smbios code does a lot of unaligned access, since we don't really
care about smbios info on ARM (not all board expose information and those
who does don't expose useful ones) disable smbios for this arch (at least
for now).
- Add "compatible with gpl dtc X.Y.Z" to version output so U-Boot doesn't complain
- Fix cross reference node
This fixes some Allwinner DTS (and probably others).
We do not treat makefs as contrib code. Import copies of makefs msdos
files from NetBSD so that we can track our changes to these files.
These are copied from NetBSD, with only a change to use __FBSDID and
$FreeBSD$ instead of __KERNEL_RCSID and $NetBSD$. A copy of the
original $NetBSD$ tag remains in each source file.
These two files were missed in r320212. Also remove a stray blank line
added in msdosfs_vfsops.c.
Submitted by: Siva Mahadevan
Sponsored by: The FreeBSD Foundation
dim@ compared clang IAS-built and GNU as-built boot0 and found them
equivalent. IAS encoded one instruction using two bytes where GNU as
used three, and another instruction using three bytes where GNU as used
two. The net result is equivalent and tested, so there is no need to
force IAS off for boot0.
The -B was originally added in projects/release-pkg r289381 as a copy
of what 'make world' did at the time. The -B was removed from
the 'installworld' call in 'world' in r303844 though. The staging
of files is safe to run in parallel.
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Add forward compatibility so that new binaries can run on old
kernels. If the new system call from ino64 isn't available on your
system, then the old one will be used and the results translated. The
stat and statfs families of functions are fully emulated. While not
required by policy, in this case it is helpful to our users to provide
this compatibility. In this case, it allows rollback of the kernel
after installing a new userland should a problem be discovered. It
also prevents foot-shooting if a user does an install before rebooting
with the new kernel. Finally, it allows the use case where one needs
to run new binaries on an old kernel as part of an upgrade process.
The getdirentries family uses tricks that may not work on remote
filesystems. Specifically, it uses a buffer 1/4 the size requested to
get the data from he old syscall.
The code carefully uses direct syscalls for old system calls to avoid
referencing freebsd11_* symbols, which contaminate ld-elf.so.1's
export table due to its use of stat functions, which causes errno to
be incorrect in client programs due to the wrong *stat* function being
resolved in some cases.
This code should removed sometime after 12 is branched.
Tested on: 12-current binaries on a 10.3-beta kernel run and return
consistent results. 12-current kernel and userland with
packages from before ino64 was committed also work.
Differential Revision: https://reviews.freebsd.org/D11185
Reviewed by: kib@, emaste@
This fixes LD errors during 'make packages' but also for the unlikely case of
'buildworld' on 1 system and 'packages' on another [1].
PR: 212877 [1]
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
A Build-ID is an identifier generated at link time to uniquely identify
ELF binaries. It allows efficient confirmation that an executable or
shared library and a corresponding standalone debuginfo file match.
(Otherwise, a checksum of the debuginfo file must be calculated when
opening it in a debugger.)
The FreeBSD base system includes GNU bfd ld 2.17.50 as the linker for
architectures other than arm64. Build-ID support was added to bfd ld
shortly after that version, so was not previously available to us.
We can now start making use of Build-ID as we migrate to using lld or
bfd ld from ports, conditionally enabled based on the LINKER_TYPE and
LINKER_VERSION make variables added in r320244 and subsequent commits.
Reviewed by: dim
MFC after: 3 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D11314
then printing it.
This prepares the code to make it libxo friendly
Reviewed by: manu, Nikita Kozlov (nikita elyzion.net)
MFC after: 2 weeks
Sponsored by: Gandi.net
This allows them to be sent in a non truncated way and addresses a warning
given by newver versions of gcc.
Thanks to Anselm Jonas Scholl for reporting it and providing a patch.
GNU binutils includes two linkers: ld.bfd and ld.gold. For clarity use
LINKER_TYPE=bfd to refer to ld.bfd, the original binutils linker that
identifies itself as "GNU ld".
Discussed with: bdrewery
