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

[Zhaoming Luo]

On Fri, Jun 13, 2025 at 03:17:41PM +0200, Michael Banck via Bug reports for the 
GNU Hurd wrote:
> On Fri, Jun 13, 2025 at 12:42:53AM +0000, Damien Zammit wrote:
> 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
> 
Do you have -M q35 with kvm command line? Try to add this option if the
answer if yes. Or something similar. The qemu command line has -M q35 option. 

Zhaoming