kernel build

I'm just starting kernel development ( custom kernels, drivers, patching and etc... ) and i'd like to find a good tutorial of how to setup and environment for FreeBSD Kernel Development. For instance, executing custom code on a live kernel as well as debugging. Will I actually need two machines...

I have been using FreeBSD and tinkering with it for about 4 years now and I want to take on a bigger role in the community and really work on the FreeBSD operating system at a lower level in my free time to expand my skill sets. I know a little Assembly and am pretty versed in C. Any tips on...

Hello, Still learning the ins and outs of FreeBSD, so please keep that in mind. :-) I'm happy to read whatever manual that might help with this, but my searches have not turned up anything that is helpful. I have a server at home running FreeBSD 12.1-RELEASE-p3 GENERIC amd64. It is mainly just...

Hi, so I reinstalled FreeBSD a few days ago, and everything seemed to be working except for sound. I'm going through a slew of problems to configure it. My audio interface is a Focusrite Scarlett 18i8. When I first installed it, I got a desktop running with the dwm wm, Firefox, and the JACK...

Hello, I am looking for some feedback to improve my current setup/flow. What I have: * home server, with 12.1R with ZFS * a few jails that I manage with iocage (have a template that I clone to create new) * I build world and kernel from source from now and then, following handbook steps...

Hi everyone! I know that the Raspberry Pi is not a tier 1 system, so I have been struggling with ways to update my kernel without having to do it on the Pi itself, for I fear that would take way too long than I have patience for. I am about to move on to trying out Crochet, but I would like to...

BSDians, I am newbie starting my FreeBSD development, actually starting to learn FreeBSD kernel development. I am trying to first compile the existing running kernel to get to know the feeling of kernel compilation (of course with some modifications like omitting floppy drive support). After...

Hello everyone! (To admins: if you feel there is a better place for this thread, go ahead and move it.) During my new attempt to recompile the kernel for my old ThinkPad X31 laptop I have left the following lines for minimal ATA support (without dozens of unneeded controllers): device atacore...

Hello, I'm trying to build the kernel, with some modules as normal user. I have checked out the code of FreeBSD 11.1 in my home director $HOME/src, then $export MAKEOBJDIRPREFIX="$HOME/obj" make buildkernel KERNCONF=MYKERN Building the kernel went fine, but when it starts to build kernel...

Hello, As some of you may already know SIMD operations are disabled in /sys/conf/kern.mk for kernel: # # For AMD64, we explicitly prohibit the use of FPU, SSE and other SIMD # operations inside the kernel itself. These operations are exclusively # reserved for user applications. # .if...

Hi guys, I tried to rebuild the kernel and I ran into the error displayed here: Any ideas what this might be about. I verified and I do have the source code file genassym.c in the location specified there. Thanks, J

Has anyone been able to successfully compile the kernel using GCC as against CLANG the default compiler on most later versions of FreeBSD? I was able to successfully buildworld. After which I reboot and now /usr/bin/cc points to GCC as requested. However kernel fails to link Here is my src.conf...

Build machine: FreeBSD rpi2.org 11.0-STABLE FreeBSD 11.0-STABLE #0 r318134: Wed May 10 23:01:57 UTC 2017 root@releng2.nyi.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/RPI2 arm svn source version r321000 Once buildworld finished overnight successfully I thought I was home and hosed... then the...

On my old computer(cpu=pd915) the compilation time is about 70s. On my new computer(cpu=amd athlon 5200) the compilation time is about 40s. This trick is very simple. :e First and the following line to your make.conf. NO_MODULES=true It will prevent the system compile the module that I do...