Allow setting the owner, group and mode of the `/dev/sev-guest` device,
similar to what is already possible for `/dev/sev` through the
`hardware.cpu.amd.sev` options.
The `/dev/sev` device is available to AMD SEV hosts, e.g., to start an
AMD SEV-SNP guest. In contrast, the `/dev/sev-guest` device is only
available within SEV-SNP guests. The guest uses the device, for example,
to request an attestation report. Linux has in-tree support for SEV-SNP
guests since 5.19.
For NVLink topology systems we need fabricmanager. Fabricmanager itself is
dependent on the datacenter driver set and not the regular x11 ones, it is also
tightly tied to the driver version. Furhtermore the current cudaPackages
defaults to version 11.8, which corresponds to the 520 datacenter drivers.
Future improvement should be to switch the main nvidia datacenter driver version
on the `config.cudaVersion` since these are well known from:
> https://docs.nvidia.com/deploy/cuda-compatibility/index.html#use-the-right-compat-package
This adds nixos configuration options `hardware.nvidia.datacenter.enable` and
`hardware.nvidia.datacenter.settings` (the settings configure fabricmanager)
Other interesting external links related to this commit are:
* Fabricmanager download site:
- https://developer.download.nvidia.com/compute/cuda/redist/fabricmanager/linux-x86_64/
* Data Center drivers:
- https://www.nvidia.com/Download/driverResults.aspx/193711/en-us/
Implementation specific details:
* Fabricmanager is added as a passthru package, similar to settings and
presistenced.
* Adds `use{Settings,Persistenced,Fabricmanager}` with defaults to preserve x11
expressions.
* Utilizes mkMerge to split the `hardware.nvidia` module into three comment
delimited sections:
1. Common
2. X11/xorg
3. Data Center
* Uses asserts to make the configurations mutualy exclusive.
Notes:
* Data Center Drivers are `x86_64` only.
* Reuses the `nvidia_x11` attribute in nixpkgs on enable, e.g. doesn't change it
to `nvidia_driver` and sets that to either `nvidia_x11` or `nvidia_dc`.
* Should have a helper function which is switched on `config.cudaVersion` like
`selectHighestVersion` but rather `selectCudaCompatibleVersion`.
The module is doing much more than just enabling the ipu6 kernel
module, so extending the enable options scope to support for these
camera modules seems a better fit.
The single option tries to do too much work, which just ends up confusing people.
So:
- don't force the console font, the kernel can figure this out as of #210205
- don't force the systemd-boot mode, it's an awkward mode that's not supported
on most things and will break flicker-free boot
- add a separate option for the xorg cursor scaling trick and move it under the xorg namespace
- add a general `fonts.optimizeForVeryHighDPI` option that explicitly says what it does
- alias the old option to that
- don't set any of those automatically in nixos-generate-config
It has no effect with `subpixel.lcdfilter = "none"`.
If the user overrides the module's default, the correct subpixel order
depends on their actual monitor, and cannot be known by this module.
If socket activation is enable (the default) and printers are configured
declaratively, the ensure-printers service will always start cupsd and
leave it running, thus defeating the point of socket activation.
With this change ensure-printers continues to start the cups.service at
boot, but automatically stops it afterwards if socket activation is
enabled.
Note: Later restarts of ensure-printers will also restart cupsd, but
it's not an issue since it will be reactivate, if necessary.
conversions were done using https://github.com/pennae/nix-doc-munge
using (probably) rev f34e145 running
nix-doc-munge nixos/**/*.nix
nix-doc-munge --import nixos/**/*.nix
the tool ensures that only changes that could affect the generated
manual *but don't* are committed, other changes require manual review
and are discarded.
This make the process of applying overlays more reliable by:
1. Ignoring dtb files that are not really device trees. [^1]
2. Adding a `filter` option (per-overlay, there already is a global one)
to limit the files to which the overlay applies. This is useful
in cases where the `compatible` string is ambiguous and multiple
unrelated files match.
Previously the script would fail in both cases.
[^1]: For example, there is dtbs/overlays/overlay_map.dtb in the
Raspberry Pi 1 kernel.
make (almost) all links appear on only a single line, with no
unnecessary whitespace, using double quotes for attributes. this lets us
automatically convert them to markdown easily.
the few remaining links are extremely long link in a gnome module, we'll
come back to those at a later date.
we can't embed syntactic annotations of this kind in markdown code
blocks without yet another extension. replaceable is rare enough to make
this not much worth it, so we'll go with «thing» instead. the module
system already uses this format for its placeholder names in attrsOf
paths.
our xslt already replaces double line breaks with a paragraph close and
reopen. not using explicit para tags lets nix-doc-munge convert more
descriptions losslessly.
only whitespace changes to generated documents, except for two
strongswan options gaining paragraph two breaks they arguably should've
had anyway.
the conversion procedure is simple:
- find all things that look like options, ie calls to either `mkOption`
or `lib.mkOption` that take an attrset. remember the attrset as the
option
- for all options, find a `description` attribute who's value is not a
call to `mdDoc` or `lib.mdDoc`
- textually convert the entire value of the attribute to MD with a few
simple regexes (the set from mdize-module.sh)
- if the change produced a change in the manual output, discard
- if the change kept the manual unchanged, add some text to the
description to make sure we've actually found an option. if the
manual changes this time, keep the converted description
this procedure converts 80% of nixos options to markdown. around 2000
options remain to be inspected, but most of those fail the "does not
change the manual output check": currently the MD conversion process
does not faithfully convert docbook tags like <code> and <package>, so
any option using such tags will not be converted at all.
Run the device tree overlays through the preprocessor before compiling it, as
is done in the kernel. This helps make overlays easier to understand, and
improves compatibility with those found in the wild.
I found the correct command line by running the kernel build with V=1, and then
removing all the arguments related to dependency tracking.
Since dtc 1.4.7 (released in 2018), there has been a much nicer syntax for
device tree overlays. This commit converts the dtsText example to use this
syntax.
These two packages don't have a lib/firmware directory, so putting
them in hardware.firmware has no effect. This will become a hard
error once firmware compression is implemented.
(In the case of Linux, the firmware was all moved to linux-firmware.)
We can't assume that DRI card minor is the same as NVidia GPU device minor,
because some DRI minors could be taken by GPUs of other vendors.
Fixes#87788, #98942.
The current type for the busId options are too relaxed, a stricter
constraint should be imposed to guard against typos which result
in Xorg unable to start.
This commit restricts the type to adhere to the B/D/F notation[1] for
addressing devices as expected by the module option.
[1] - https://wiki.osdev.org/PCI#Configuration_Space_Access_Mechanism_.231
