Re: [PATCH mach v4 1/1] Integrate HPET so the functions used for getting time can have a higher accuracy

[Michael Banck]

On Fri, Jun 13, 2025 at 12:42:53AM +0000, Damien Zammit wrote:
> Michael,
> 
> I tried without -smp 1 flag and it still works here with UP 
> (--enable-apic --disable-linux-groups).

Ok, I did not have --disable-linux-groups yet, if I add that to the
configuration, it boots further. However, it then looks identical to
what I saw with SMP, i.e., booting takes much longer and then at some
point I get a "lost interrupt" every 10 seconds (I changed the boot
device from hd0 to wd0):

|warning: dmalloc(4096) requested with 10000 alignment, bumping up size
|[  47.5800050] cd0(piixide0:1:0): using PIO mode 4, DMA mode 2 (using DMA)
|[  47.6700050] WARNING: 10 errors while detecting hardware; check system log.
|piixide0:0:0: lost interrupt
|[  50.6800050]  type: ata tc_bcount: 512 tc_skip: 0
|piixide0:0:0: lost interrupt
|[  60.7100050]  type: ata tc_bcount: 512 tc_skip: 1

I use the following KVM command-line right now:

kvm -display curses -net user,hostfwd=tcp:127.0.0.1:2020-:22 -net
nic,model=e1000 -drive file=hurd-unstable.img,cache=writeback,format=raw
-m 2G


Michael