kmi/arch/riscv64/conf/init, branch master ACTIVE - Kernel with migrating threads as IPC https://metanimi.dy.fi/cgit/kmi/atom?h=master 2024-07-09T19:12:27Z start working on tests 2024-07-09T19:12:27Z Kimplul kimi.h.kuparinen@gmail.com 2024-07-09T19:12:27Z urn:sha1:e8a1df103cc28419dd7d4439c0b1d1739d110f78 + Current setup will likely not last long, just a stopgap until I figure out how I want to build each testcase etc. Probably dir based, but I'll probably add some scripts that generate the build rules for each test case (or binary?). Also, should probably put ouput files in a build directory and keep the source clean, but again, good enough for now. Will have to start implementing more extensive tests, and probably come up with some way to compare textual output etc. add req_page back in as I realized it's useful 2024-07-07T18:47:14Z Kimplul kimi.h.kuparinen@gmail.com 2024-07-07T18:47:14Z urn:sha1:219c27d420fe0abe5515cefc2513c6fe60aafdf9 + Can be used to pass contiguous memory regions to things like virtio block devices for implementing disk drivers etc. make executable entrypoint universal callback 2024-07-07T15:12:55Z Kimplul kimi.h.kuparinen@gmail.com 2024-07-07T15:12:55Z urn:sha1:fe4c623cb9320226866829317cea8ba0c49e7dbc + Effectively means that all executables can be called into, but if an exe doesn't want to deal with anyone else it should just set a flag like `not_really_a_server` or whatever simplify assertions 2024-07-07T04:02:46Z Kimplul kimi.h.kuparinen@gmail.com 2024-07-07T04:02:46Z urn:sha1:b97967ab660243b723f246db03c2e4a82e125f3f + No real point having multiple different levels of assertions, just say you assert something and be done with it add RAM usage counting 2024-07-06T19:08:50Z Kimplul kimi.h.kuparinen@gmail.com 2024-07-06T19:08:50Z urn:sha1:3528f88fc36df6964c0efed784ae223cfe93544e + Slightly more overhead but will help track down possible memory leaks in the future. Could also add in a flag for turning off/on but I don't think the difference in performance is that significant. pretty massive virtual memory rewrite 2024-07-06T15:14:04Z Kimplul kimi.h.kuparinen@gmail.com 2024-07-06T15:14:04Z urn:sha1:76517486919657ecadda9867125dc6730f29a5b7 + The system is now a bit simpler and hopefully easier to understand, while also extending the shared memory to be 1:N, where there is one owner who may become a zombie while waiting for the N to die. expand notifications into interrupt handlers 2024-07-01T20:34:57Z Kimplul kimi.h.kuparinen@gmail.com 2024-07-01T20:34:57Z urn:sha1:7ad9c01dad7b1b46eced8290b8b991383d648188 + Terminology is still a bit poor, and will still have to write documentation + implement ipis properly use nifty variable argument count trick 2023-07-27T17:29:28Z Kimplul kimi.h.kuparinen@gmail.com 2023-07-27T17:29:28Z urn:sha1:3212707a9ab549119ad0ad6441a07fe774c99f3b + Found it in newlib. This allows the compiler to more effectively optimize away unnecessary register operations. Applied to both kernel and init.c for a slight speed increase. I really should move init.c to some other repository though, the binary files are starting to get annoying add ipc_kick 2023-07-27T15:39:54Z Kimplul kimi.h.kuparinen@gmail.com 2023-07-27T15:39:54Z urn:sha1:a26fb216729ba7a7d0fbfc97c2082c9db512aa36 + Tests will have to come later give compiler more room to optimize rpc invocation 2023-06-05T17:31:44Z Kimplul kimi.h.kuparinen@gmail.com 2023-06-05T17:31:44Z urn:sha1:67831847a3fb211784e1d143d472fd86c0e5fab8 + Try to write arguments to memory as fast as possible to free up some registers that the compiler can then play with. Qemu runs ~1 700 000 rpc's per second, visionfive2 @1GHz (I think) ~800 000.