Test commit

debug - more ncptrace enhancements

* Accumulate counts for unres, leafs, fache, and negative entries,
and print at the end.

debug - add nc_generation output from ncptrace

* Adjust ncptrace to print the value of nc_generation

stress - Add t_memlock.c, t_memlockall.c

* Add simple stress test for mlock()/mlockall().

test/test: dummy commit

bot test #2

bot test

Some additions and fixes related to fdatasync(2) and posix_fallocate(2).

* Fix a small issue in VOP_FDATASYNC()'s definition in <sys/vfsops.h>.

* Mention fdatasync() in fsync.2 (this basically sync

Some additions and fixes related to fdatasync(2) and posix_fallocate(2).

* Fix a small issue in VOP_FDATASYNC()'s definition in <sys/vfsops.h>.

* Mention fdatasync() in fsync.2 (this basically syncs that manual page
with FreeBSD, with a few adjustments).

* Add a manual page for posix_fallocate() (from FreeBSD, with a few
adjustments).

* Mention fdatasync() in the list of reentrant functions in sigaction.2.

* In pthread_testcancel.3, mention fdatasync() in the list of functions
for which a cancellation point will occur.

* Mention VOP_FDATASYNC() in VOP_FSYNC.9 (partly taken from FreeBSD).

* Remove a compatibility define in the fsstress tool.

Thanks to tkusumi for reviewing.

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kernel/libc: Remove the old vmm code.

Removes the kernel code and two system calls.

Bump __DragonFly_version too.

Reviewed-by: aly, dillon

test/nvmm/demo: Clean up header inclusions

* Remove unused header inclusions.
* Reorder header inclusions.
* Define MSR_APICBASE, APICBASE_BSP and APICBASE_EN locally to be more
OS-independent.

testcases/libnvmm: Remove unneeded header inclusions

They are now provided by the <dev/virtual/nvmm/nvmm.h> header file.

NVMM: Update examples and libnvmm tests

testcases/libnvmm: Improve makefile to not write in source tree

Both build and dfregress(8) would write output in place in the source
tree, which however may be on a readonly mount via NFS. Improve

testcases/libnvmm: Improve makefile to not write in source tree

Both build and dfregress(8) would write output in place in the source
tree, which however may be on a readonly mount via NFS. Improve the
makefile to cpdup the whole directory to /tmp and then do everything
there. (credit to Matt Dillon for the idea)

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testcases/libnvmm: Add to dfregress(8) test framework

Rewrite and add makefiles to add these testcases to dfregress(8) test
framework. Add a handy 'make test' target to easily run the tests.

Remov

testcases/libnvmm: Add to dfregress(8) test framework

Rewrite and add makefiles to add these testcases to dfregress(8) test
framework. Add a handy 'make test' target to easily run the tests.

Remove unused ATF test scripts.

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testcases/libnvmm: Port to DragonFly

Minor tweaks similar to the porting of libnvmm(3).

Import libnvmm tests from NetBSD-current

Branch: NetBSD-current
Date: 2021-06-25
Path: tests/lib/libnvmm

test/nvmm/demo: Improve progress logs to help test/debug

* Add several more progress logs.
* Reduce accepting trap count to 6, reducing the total test time.
* Update the example output in README.

test/nvmm/demo: Rewrite makefiles to not write in source tree

Rewrite the makefiles so it no longer write in the source tree but
output in the /tmp directory. This is useful for building with a
NFS

test/nvmm/demo: Rewrite makefiles to not write in source tree

Rewrite the makefiles so it no longer write in the source tree but
output in the /tmp directory. This is useful for building with a
NFS-exported readonly mount of the source tree (e.g., used by dillon).

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test/nvmm/demo: Port 'smallkern' to DragonFly

test/nvmm/demo: Make 'smallkern' more self-contained

Provide local 'asm.h' and 'trap.h' headers (derived from NetBSD),
extract necessary PTE_* and PSL_* defines, making 'smallkern' much more
self-co

test/nvmm/demo: Make 'smallkern' more self-contained

Provide local 'asm.h' and 'trap.h' headers (derived from NetBSD),
extract necessary PTE_* and PSL_* defines, making 'smallkern' much more
self-contained, which greatly reduces the needed modifications for
porting it to DragonFly. Moreover, it helps to keep the ported code
working on both operating systems.

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test/nvmm/demo: Various cleanups to 'smallkern'

* Remove unused variables, symbols, function prototypes and functions.
* Move function prototypes and 'extern' declarations to header files.
* Add 'st

test/nvmm/demo: Various cleanups to 'smallkern'

* Remove unused variables, symbols, function prototypes and functions.
* Move function prototypes and 'extern' declarations to header files.
* Add 'static' qualifier for file-local variables.
* Add inclusion guard to header files.
* Various minor adjustments.

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test/nvmm/demo: Fix ELF load/mmap issue on DragonFly

The 'smallkern' ELF built on DragonFly has a zero-sized GNU_STACK
segment, which causes mmap() to fail (EINVAL). Add conditionals
in elf_parse()

test/nvmm/demo: Fix ELF load/mmap issue on DragonFly

The 'smallkern' ELF built on DragonFly has a zero-sized GNU_STACK
segment, which causes mmap() to fail (EINVAL). Add conditionals
in elf_parse() to ignore such a segment (while also check for
unsupported non-LOAD segments).

Now 'toyvirt' correctly loads the 'smallkern' ELF on DragonFly.

In addition, assert in toyvirt_mem_add() that the size must be
greater than zero.

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test/nvmm/demo: Port 'toyvirt' to DragonFly

Just some minor subsitutions.

Use 'ifdef's to make it work on both NetBSD and DragonFly.

test/nvmm/demo: Fix some compilation warnings

test/nvmm/demo: Update 'toyvirt' to current libnvmm(3)

Various adjustments to the demo code to make it work again with the
current libnvmm(3) API in NetBSD 9.1.

In addition, add one more return che

test/nvmm/demo: Update 'toyvirt' to current libnvmm(3)

Various adjustments to the demo code to make it work again with the
current libnvmm(3) API in NetBSD 9.1.

In addition, add one more return check of nvmm_vcpu_configure() and
improve the logging messages a bit. Update the example output in
README accordingly.

Tested on NetBSD 9.1. Porting to DragonFly follows.

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