Use per-domain locks for vm page queue free. Move paging control from
global to per-domain state. Protect reservations with the free lock
from the domain that they belong to. Refactor to make vm d

Use per-domain locks for vm page queue free. Move paging control from
global to per-domain state. Protect reservations with the free lock
from the domain that they belong to. Refactor to make vm domains more
of a first class object.

Reviewed by: markj, kib, gallatin
Tested by: pho
Sponsored by: Netflix, Dell/EMC Isilon
Differential Revision: https://reviews.freebsd.org/D14000

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Merge ^/head r327886 through r327930.

Implement NUMA policy for kmem_*(9). This maintains compatibility with
reservations by giving each memory domain its own KVA space in vmem that
is naturally aligned on superpage boundaries.

Reviewe

Implement NUMA policy for kmem_*(9). This maintains compatibility with
reservations by giving each memory domain its own KVA space in vmem that
is naturally aligned on superpage boundaries.

Reviewed by: alc, markj, kib (some objections)
Sponsored by: Netflix, Dell/EMC Isilon
Tested by; pho
Differential Revision: https://reviews.freebsd.org/D13289

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Move domain iterators into the page layer where domain selection should take
place. This makes the majority of the phys layer explicitly domain specific.

Reviewed by: markj, kib (some objections)
D

Move domain iterators into the page layer where domain selection should take
place. This makes the majority of the phys layer explicitly domain specific.

Reviewed by: markj, kib (some objections)
Discussed with: alc
Tested by: pho
Sponsored by: Netflix & Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D13014

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sys: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
pro

sys: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.

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Merge ^/head r321383 through r322397.

MFhead@r320180

Utilize pmap_enter(..., psind=1) in vm_fault_soft_fast() on amd64. (The
Differential Revision discusses the benefits of this change.)

Add a function, vm_reserv_to_superpage(), that returns the supe

Utilize pmap_enter(..., psind=1) in vm_fault_soft_fast() on amd64. (The
Differential Revision discusses the benefits of this change.)

Add a function, vm_reserv_to_superpage(), that returns the superpage
containing the specified base page.

Reviewed by: kib, markj
Tested by: pho
MFC after: 10 days
Differential Revision: https://reviews.freebsd.org/D11556

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Merge ^/head r316992 through r317215.

All these files need sys/vmmeter.h, but now they got it implicitly
included via sys/pcpu.h.

Relax the object type restrictions on vm_page_alloc_contig(). Specifically,
add support for object types that were previously prohibited because they
could contain PG_CACHED pages.

Roughly halve th

Relax the object type restrictions on vm_page_alloc_contig(). Specifically,
add support for object types that were previously prohibited because they
could contain PG_CACHED pages.

Roughly halve the number of radix trie operations performed by
vm_page_alloc_contig() using the same approach that is employed by
vm_page_alloc(). Also, eliminate the radix trie lookup performed with the
free page queues lock held.

Tidy up the handling of radix trie insert failures in vm_page_alloc() and
vm_page_alloc_contig().

Reviewed by: kib, markj
Tested by: pho
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8878

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Merge ^/head r309817 through r310168.

Eliminate every mention of PG_CACHED pages from the comments in the machine-
independent layer of the virtual memory system. Update some of the nearby
comments to eliminate redundancy and improve cl

Eliminate every mention of PG_CACHED pages from the comments in the machine-
independent layer of the virtual memory system. Update some of the nearby
comments to eliminate redundancy and improve clarity.

In vm/vm_reserv.c, do not use hyphens after adverbs ending in -ly per
The Chicago Manual of Style.

Update the comment in vm/vm_page.h defining the four types of page queues to
reflect the elimination of PG_CACHED pages and the introduction of the
laundry queue.

Reviewed by: kib, markj
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8752

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Merge ^/head r308491 through r308841.

Remove most of the code for implementing PG_CACHED pages. (This change does
not remove user-space visible fields from vm_cnt or all of the references to
cached pages from comments. Those changes wi

Remove most of the code for implementing PG_CACHED pages. (This change does
not remove user-space visible fields from vm_cnt or all of the references to
cached pages from comments. Those changes will come later.)

Reviewed by: kib, markj
Tested by: pho
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8497

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MFH r289384-r293170

Sponsored by: The FreeBSD Foundation

MFH @r292599

This includes the pluggable TCP framework and other chnages to the
netstack to track for VNET stability.

Security: The FreeBSD Foundation

Introduce a new mechanism for relocating virtual pages to a new physical
address and use this mechanism when:

1. kmem_alloc_{attr,contig}() can't find suitable free pages in the physical
memory a

Introduce a new mechanism for relocating virtual pages to a new physical
address and use this mechanism when:

1. kmem_alloc_{attr,contig}() can't find suitable free pages in the physical
memory allocator's free page lists. This replaces the long-standing
approach of scanning the inactive and inactive queues, converting clean
pages into PG_CACHED pages and laundering dirty pages. In contrast, the
new mechanism does not use PG_CACHED pages nor does it trigger a large
number of I/O operations.

2. on 32-bit MIPS processors, uma_small_alloc() and the pmap can't find
free pages in the physical memory allocator's free page lists that are
covered by the direct map. Tested by: adrian

3. ttm_bo_global_init() and ttm_vm_page_alloc_dma32() can't find suitable
free pages in the physical memory allocator's free page lists.

In the coming months, I expect that this new mechanism will be applied in
other places. For example, balloon drivers should use relocation to
minimize fragmentation of the guest physical address space.

Make vm_phys_alloc_contig() a little smarter (and more efficient in some
cases). Specifically, use vm_phys_segs[] earlier to avoid scanning free
page lists that can't possibly contain suitable pages.

Reviewed by: kib, markj
Glanced at: jhb
Discussed with: jeff
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D4444

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Catch up with head.

Correct an error in vm_reserv_reclaim_contig(). In the highly unusual
case that the reservation contained "low", the starting position in the
popmap for the free page search was incorrectly calculat

Correct an error in vm_reserv_reclaim_contig(). In the highly unusual
case that the reservation contained "low", the starting position in the
popmap for the free page search was incorrectly calculated. The most
likely (and visible) symptom of this error was the assertion failure,
"vm_reserv_reclaim_contig: pa is too low".

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Merge from head

Sponsored by: Gandi.net

Finish merging from head, messed up in previous attempt

Catch up with head, primarily for the 1.14.4.0 firmware.

Merge ^/head r285924 through r286421.

Introduce a sysctl for reporting the number of fully populated reservations.