Re: [PATCH net-next 3/3] selftests: drv-net: iou-zcrx: allocate hugepages for large chunks test

[Dragos Tatulea <dtatulea@nvidia.com>]

On 03.03.26 03:22, Jakub Kicinski wrote:
> On Mon, 2 Mar 2026 16:16:38 +0100 Dragos Tatulea wrote:
>>> +    hp_file = "/proc/sys/vm/nr_hugepages"
>>> +    with open(hp_file, 'r+', encoding='utf-8') as f:
>>> +        nr_hugepages = int(f.read().strip())
>>> +        if nr_hugepages < 64:
>>> +            f.seek(0)
>>> +            f.write("64")
>>> +            defer(lambda: open(hp_file, 'w', encoding='utf-8').write(str(nr_hugepages)))
>>> +
>>>      single(cfg)
>>>      rx_cmd = f"{cfg.bin_local} -s -p {cfg.port} -i {cfg.ifname} -q {cfg.target} -x 2"
>>>      tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {cfg.port} -l 12840"
>>>  
>>>      probe = cmd(rx_cmd + " -d", fail=False)
>>>      if probe.ret == SKIP_CODE:
>>> -        raise KsftSkipEx(probe.stdout)
>>> +        raise KsftSkipEx(probe.stdout.strip())
>>>    
>> While working on a similar fix I found that the probe here also requires a barrier.
> 
> Hm, I'm not hitting this issue. Maybe because I'm testing in QEMU?
> If you can still repro after this series could you send a follow up?
Will do.

Thanks,
Dragos