sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

show more ...

powerpc: slb_alloc_user_cache: fix missing uma_zalloc wait flag

Flags should be M_WAITOK | M_ZERO instead of just M_ZERO

Reviewed by: markj
MFC after: 2 days
Sponsored by: Instituto de Pesquisas El

powerpc: slb_alloc_user_cache: fix missing uma_zalloc wait flag

Flags should be M_WAITOK | M_ZERO instead of just M_ZERO

Reviewed by: markj
MFC after: 2 days
Sponsored by: Instituto de Pesquisas Eldorado (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D36865

show more ...

Convert consumers to vm_page_alloc_noobj_contig()

Remove now-unneeded page zeroing. No functional change intended.

Reviewed by: alc, hselasky, kib
MFC after: 1 week
Sponsored by: The FreeBSD Found

Convert consumers to vm_page_alloc_noobj_contig()

Remove now-unneeded page zeroing. No functional change intended.

Reviewed by: alc, hselasky, kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32006

show more ...

powerpc: clean up empty lines in .c and .h files

Merge ^/head r358075 through r358130.

powerpc: unconditionally mark SLB zones UMA_ZONE_CONTIG

PR: 244118
Reported by: Francis Little <oggy at farscape.co.uk>
Tested by: Francis Little, Mark Millard <marklmi at yahoo.com>
Reviewed by: m

powerpc: unconditionally mark SLB zones UMA_ZONE_CONTIG

PR: 244118
Reported by: Francis Little <oggy at farscape.co.uk>
Tested by: Francis Little, Mark Millard <marklmi at yahoo.com>
Reviewed by: markj
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D23729

show more ...

Merge ^/head r357408 through r357661.

uma: convert mbuf_jumbo_alloc to UMA_ZONE_CONTIG & tag others

Remove mbuf_jumbo_alloc and let large mbuf zones use the new uma default
contig allocator (a copy of mbuf_jumbo_alloc). Tag other zones

uma: convert mbuf_jumbo_alloc to UMA_ZONE_CONTIG & tag others

Remove mbuf_jumbo_alloc and let large mbuf zones use the new uma default
contig allocator (a copy of mbuf_jumbo_alloc). Tag other zones which
require contiguous objects, even if they don't use the new default
contig allocator, so that uma knows about their constraints.

Reviewed by: jeff, markj
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D23238

show more ...

powerpc/pmap: NUMA-ize vm_page_array on powerpc

Summary:
This matches r351198 from amd64. This only applies to AIM64 and Book-E.
On AIM64 it short-circuits with one domain, to behave similar to
exi

powerpc/pmap: NUMA-ize vm_page_array on powerpc

Summary:
This matches r351198 from amd64. This only applies to AIM64 and Book-E.
On AIM64 it short-circuits with one domain, to behave similar to
existing. Otherwise it will allocate 16MB huge pages to hold the page
array, across all NUMA domains. On the first domain it will shift the
page array base up, to "upper-align" the page array in that domain, so
as to reduce the number of pages from the next domain appearing in this
domain. After the first domain, subsequent domains will be allocated in
full 16MB pages, until the final domain, which can be short. This means
some inner domains may have pages accounted in earlier domains.

On Book-E the page array is setup at MMU bootstrap time so that it's
always mapped in TLB1, on both 32-bit and 64-bit. This reduces the TLB0
overhead for touching the vm_page_array, which reduces up to one TLB
miss per array access.

Since page_range (vm_page_startup()) is no longer used on Book-E but is on
32-bit AIM, mark the variable as potentially unused, rather than using a
nasty #if defined() list.

Reviewed by: luporl
Differential Revision: https://reviews.freebsd.org/D21449

show more ...

MFHead @r350386

Sponsored by: The FreeBSD Foundation

powerpc: Remove an unnecessary #ifdef guard from slb.c

slb.c is only compiled for powerpc64, so no need for the #ifdef in this block.

[PPC] Add missing SLB allocation KASSERT

Although PPC SLB code doesn't handle allocation failures,
which are rare, in most places it asserts that the pointer
returned by uma_zalloc() is not NULL, ma

[PPC] Add missing SLB allocation KASSERT

Although PPC SLB code doesn't handle allocation failures,
which are rare, in most places it asserts that the pointer
returned by uma_zalloc() is not NULL, making it easier to
identify the failure and avoiding an invalid pointer dereference.

This change simply adds a missing KASSERT in SLB code.

show more ...

MFHead @349234

Sponsored by: The FreeBSD Foundation

powerpc/pmap: Move the SLB spill handlers to a better place

The SLB spill handlers are AIM-specific, and belong better with the rest of
the SLB code anyway. No functional change.

[PPC64] Support QEMU/KVM pseries without hugepages

This set of changes make it possible to run FreeBSD for PowerPC64/pseries,
under QEMU/KVM, without requiring the host to make hugepages available t

[PPC64] Support QEMU/KVM pseries without hugepages

This set of changes make it possible to run FreeBSD for PowerPC64/pseries,
under QEMU/KVM, without requiring the host to make hugepages available to the
guest.

While there was already this possibility, by means of setting hw_direct_map to
0, on PowerPC64 there were a couple of issues/wrong assumptions that prevented
this from working, before this changelist.

Reviewed by: jhibbits
Differential Revision: https://reviews.freebsd.org/D20522

show more ...

Move the powerpc64 direct map base address from zero to high memory. This
accomplishes a few things:
- Makes NULL an invalid address in the kernel, which is useful for catching
bugs.
- Lays groundw

Move the powerpc64 direct map base address from zero to high memory. This
accomplishes a few things:
- Makes NULL an invalid address in the kernel, which is useful for catching
bugs.
- Lays groundwork for radix-tree translation on POWER9, which requires the
direct map be at high memory.
- Similarly lays groundwork for a direct map on 64-bit Book-E.

The new base address is chosen as the base of the fourth radix quadrant
(the minimum kernel address in this translation mode) and because all
supported CPUs ignore at least the first two bits of addresses in real
mode, allowing direct-map addresses to be used in real-mode handlers.
This is required by Linux and is part of the architecture standard
starting in POWER ISA 3, so can be relied upon.

Reviewed by: jhibbits, Breno Leitao
Differential Revision: D14499

show more ...

Merge AIM and Book-E PCPU fields

This is part of a long-term goal of merging Book-E and AIM into a single GENERIC
kernel. As more work is done, the struct may be optimized further.

Reviewed by: nw

Merge AIM and Book-E PCPU fields

This is part of a long-term goal of merging Book-E and AIM into a single GENERIC
kernel. As more work is done, the struct may be optimized further.

Reviewed by: nwhitehorn

show more ...

Document places we assume that physical memory is direct-mapped at zero by
using a new macro PHYS_TO_DMAP, which deliberately has the same name as the
equivalent macro on amd64. This also sets the st

Document places we assume that physical memory is direct-mapped at zero by
using a new macro PHYS_TO_DMAP, which deliberately has the same name as the
equivalent macro on amd64. This also sets the stage for moving the direct
map to another base address.

show more ...

Merge ^/head r327886 through r327930.

Implement NUMA support in uma(9) and malloc(9). Allocations from specific
domains can be done by the _domain() API variants. UMA also supports a
first-touch policy via the NUMA zone flag.

The slab

Implement NUMA support in uma(9) and malloc(9). Allocations from specific
domains can be done by the _domain() API variants. UMA also supports a
first-touch policy via the NUMA zone flag.

The slab layer is now segregated by VM domains and is precise. It handles
iteration for round-robin directly. The per-cpu cache layer remains
a mix of domains according to where memory is allocated and freed. Well
behaved clients can achieve perfect locality with no performance penalty.

The direct domain allocation functions have to visit the slab layer and
so require per-zone locks which come at some expense.

Reviewed by: Attilio (a slightly older version)
Tested by: pho
Sponsored by: Netflix, Dell/EMC Isilon

show more ...

sys/powerpc: further 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 - e

sys/powerpc: further 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.

show more ...

Merge ^/head r325505 through r325662.

Replace manyinstances of VM_WAIT with blocking page allocation flags
similar to the kernel memory allocator.

This simplifies NUMA allocation because the domain will be known at wait
time and races b

Replace manyinstances of VM_WAIT with blocking page allocation flags
similar to the kernel memory allocator.

This simplifies NUMA allocation because the domain will be known at wait
time and races between failure and sleeping are eliminated. This also
reduces boilerplate code and simplifies callers.

A wait primitive is supplied for uma zones for similar reasons. This
eliminates some non-specific VM_WAIT calls in favor of more explicit
sleeps that may be satisfied without new pages.

Reviewed by: alc, kib, markj
Tested by: pho
Sponsored by: Netflix, Dell/EMC Isilon

show more ...

Merge ^/head r295845 through r295901.