Re: What if the console device is only accessible from one CPU in a multiprocessor system?

2025-03-15 Thread Christoph Badura
On Tue, Mar 04, 2025 at 01:26:42PM -0800, Jason Thorpe wrote: > The firmware selects which CPU module gets to boot the system (the > criteria used is unimportant here), and the UART on that module is > connected to the console port and the RTC on that module is the > authoritative RTC for the syste

Tickless NetBSD with high-resolution timers GSOC project

2025-03-15 Thread Dorjoy Chowdhury
Hi, Hope everyone is doing well. I am Dorjoy. I am from Bangladesh. I am interested in the Tickless NetBSD with high-resolution timers[1] project. I wanted to know if this project is still up for grabs and if a mentor is available for this project. I would like to start to discuss this one and see

Re: Introductory email in reference to GSoC 2025 (https://wiki.netbsd.org/projects/project/swap-auto/)

2025-03-15 Thread anup parikh
Hello, I wasn't able to get internet working on NetBSD under QEMU and since I'm completely unfamiliar with NetBSD and I'll definitely need more time than I have currently, I will not apply for the moment. But, I was thinking about it and realized that changes to the scheduler would also be require

Re: ataraid(4) missing disk handling

2025-03-15 Thread Christoph Badura
On Mon, Mar 10, 2025 at 04:43:30PM +0200, Andrius V wrote: > Taylor has a good analysis and explanation of the issue > https://mail-index.netbsd.org/netbsd-bugs/2024/03/26/msg082202.html, > which I also noticed by testing ATA RAID setup on VIA controllers. > [...] Good analysis. > Given that thr

Re: ataraid(4) missing disk handling

2025-03-15 Thread Christoph Badura
On Tue, Mar 11, 2025 at 04:33:51PM +0200, Andrius V wrote: > The major difference is that vn_bdev_open() increments > (*vpp)->v_writecount++; > That prevents from the v_writecount > 0 assert failure on vn_close() > (https://nxr.netbsd.org/xref/src/sys/dev/ata/ld_ataraid.c#249) > > My only conce