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> FreeBSD easily achieves binary compatibility with earlier versions. So no need to mess around with DKMS Binary compatibility is for userspace programs, not k

> FreeBSD easily achieves binary compatibility with earlier versions. So no need to mess around with DKMS Binary compatibility is for userspace programs, not kernel modules.

loeg 6y ago
GP's link is to the COMPAT_FREEBSD binary compatibility for earlier versions of FreeBSD, oddly. I don't think it (or linux emulation) has anything to do with Nvidia's needs re: CUDA/NVENC.
- LargoLasskhyfv 6y ago
  It means you have a module from some vendor, or something similar to the NVIDIA installer for linux, which technically is nothing else than a batch compiled makefile, spitting out a kernel-module made for version 1.2.3 while you are running 2.4.5. It worked. I don't know why it shouldn't now. Edit: I'm not having any FreeBSD systems in use right now, so i don't know if they changed the defaults. What i remember is at least the last two versions were compiled into GENERIC, so you didn't even had to compile your own kernel when that range backwards was enough. Similar thing in NetBSD, a loooong time ago, even their own driver for 3Com905 relied on the equivalent of that functionality. That caught me by surprise, because i used NetBSD like Gentoo, found some Compat foobarjurassicBSD, wondered why i should use that at all, and had no working net. Fun! :-)
  - loeg 6y ago
    That's not how the nvidia binary blob works in FreeBSD. Instead, there is some compiled-from-source-code OS portability glue, which is compiled against the target version of the FreeBSD kernel. Then the binary blob links the portability glue. I believe something similar is done in Linux. The difference in experience may come from FreeBSD maintaining a stable KBI over a release version (e.g., stable/12), while Linux aggressively does not maintain any KBI stability; hence the need for DKMS/akmods. This is unrelated to COMPAT_FREEBSD.
    - LargoLasskhyfv 6y ago
      Sigh. Been typing too fast as usual. I know thats not the way the Nvidia-thing works, instead doing the glue-thing which interfaces to the binary blob like you mentioned. But it could (instead of that)! That's what i meant to say.
LargoLasskhyfv 6y ago
Ahem. Tell that to all the binary drivers for network cards and raid controllers which relied on that functionality, which i happened to use not all that long ago.

> FreeBSD easily achieves binary compatibility with earlier versions. So no need to mess around with DKMS Binary compatibility is for userspace programs, not kernel modules.

loeg 6y ago

GP's link is to the COMPAT_FREEBSD binary compatibility for earlier versions of FreeBSD, oddly. I don't think it (or linux emulation) has anything to do with Nvidia's needs re: CUDA/NVENC.

LargoLasskhyfv 6y ago
It means you have a module from some vendor, or something similar to the NVIDIA installer for linux, which technically is nothing else than a batch compiled makefile, spitting out a kernel-module made for version 1.2.3 while you are running 2.4.5. It worked. I don't know why it shouldn't now. Edit: I'm not having any FreeBSD systems in use right now, so i don't know if they changed the defaults. What i remember is at least the last two versions were compiled into GENERIC, so you didn't even had to compile your own kernel when that range backwards was enough. Similar thing in NetBSD, a loooong time ago, even their own driver for 3Com905 relied on the equivalent of that functionality. That caught me by surprise, because i used NetBSD like Gentoo, found some Compat foobarjurassicBSD, wondered why i should use that at all, and had no working net. Fun! :-)
- loeg 6y ago
  That's not how the nvidia binary blob works in FreeBSD. Instead, there is some compiled-from-source-code OS portability glue, which is compiled against the target version of the FreeBSD kernel. Then the binary blob links the portability glue. I believe something similar is done in Linux. The difference in experience may come from FreeBSD maintaining a stable KBI over a release version (e.g., stable/12), while Linux aggressively does not maintain any KBI stability; hence the need for DKMS/akmods. This is unrelated to COMPAT_FREEBSD.
  - LargoLasskhyfv 6y ago
    Sigh. Been typing too fast as usual. I know thats not the way the Nvidia-thing works, instead doing the glue-thing which interfaces to the binary blob like you mentioned. But it could (instead of that)! That's what i meant to say.

LargoLasskhyfv 6y ago

Ahem. Tell that to all the binary drivers for network cards and raid controllers which relied on that functionality, which i happened to use not all that long ago.