Re: kvm fpu warning on 4.14.89

It's a dual core 8th Gen Intel atom. In the future I will use a quad core atom and probably I will isolate a core. I will investigate on ipipe traces. I will let you know, but for me it's OK anyway. Il mer 10 apr 2019, 21:36 Jan Kiszka ha scritto: > On 10.04.19 21:26, cagnulein via Xenomai

Re: kvm fpu warning on 4.14.89

On 10.04.19 21:26, cagnulein via Xenomai wrote: After 3 days of test (latency + windows 10 with cpu-z and stress test) I reached rare peaks of 130 us. For me it's OK but I think there is a small "regression" against the 4.9 Do you need any other test? What is the CPU / SoC here? Are we talking

Re: kvm fpu warning on 4.14.89

After 3 days of test (latency + windows 10 with cpu-z and stress test) I reached rare peaks of 130 us. For me it's OK but I think there is a small "regression" against the 4.9 Do you need any other test? R. Il lun 8 apr 2019, 12:13 Jan Kiszka ha scritto: > On 08.04.19 11:56, cagnulein wrote: >

Re: kvm fpu warning on 4.14.89

On 08.04.19 11:56, cagnulein wrote: Wow! It works flawless! Latency is just a little higher than 4.9.146 (72 VS 67) but it's acceptable for me. Now I started a 3 days test. I will let you know. That's good news! Let's see if the latency difference is still relevant after measuring longer...

Re: kvm fpu warning on 4.14.89

Thank you, on Monday morning I will fire it up! :) R. Il ven 5 apr 2019, 20:29 Jan Kiszka ha scritto: > On 05.04.19 15:27, Jan Kiszka wrote: > > On 05.04.19 11:42, Jan Kiszka wrote: > >> On 05.04.19 10:44, cagnulein wrote: > >>> Hi, yes I double checked the patch and it's applied correctly. >

Re: kvm fpu warning on 4.14.89

On 05.04.19 15:27, Jan Kiszka wrote: On 05.04.19 11:42, Jan Kiszka wrote: On 05.04.19 10:44, cagnulein wrote: Hi, yes I double checked the patch and it's applied correctly. Here you can find my config. CONFIG_DEBUG_STACKOVERFLOW is disabled. I can't get the uart on this system, is there any

Re: kvm fpu warning on 4.14.89

On 04.04.19 21:05, Jan Kiszka wrote: > On 21.03.19 09:01, Jan Kiszka wrote: >> On 21.03.19 08:04, cagnulein wrote: >>> I've got a similar issue even with the 4.9.146 with a kvm guest on and >>> latency >>> on too. It's quite deterministic. Any idea? >>> >> >> I didn't trigger your trace yet, but

Re: kvm fpu warning on 4.14.89

On 05.04.19 11:42, Jan Kiszka wrote: > On 05.04.19 10:44, cagnulein wrote: >> Hi, yes I double checked the patch and it's applied correctly. >> Here you can find my config. >> >> CONFIG_DEBUG_STACKOVERFLOW is disabled. >> >> I can't get the uart on this system, is there any other way to catch log

Re: kvm fpu warning on 4.14.89

I'll give it a shot, I will let you know on Monday. Thanks and good weekend R. Il ven 5 apr 2019, 11:42 Jan Kiszka ha scritto: > On 05.04.19 10:44, cagnulein wrote: > > Hi, yes I double checked the patch and it's applied correctly. > > Here you can find my config. > > > >

Re: kvm fpu warning on 4.14.89

Hi, yes I double checked the patch and it's applied correctly. Here you can find my config. CONFIG_DEBUG_STACKOVERFLOW is disabled. I can't get the uart on this system, is there any other way to catch log in this scenario? Why should I test the 4.4.y? 4.9.146 works fine on the same system (with

Re: kvm fpu warning on 4.14.89

On 05.04.19 08:20, cagnulein wrote: > Hi Jan, thanks for your patch. > I've just tried but I have the same issue: I start a kvm guest (windows 10 > iot > 2019) and it works, but when I start a latency test the whole system hangs > completely. > > Could i give you more info in some way? OK...

Re: kvm fpu warning on 4.14.89

Hi Jan, thanks for your patch. I've just tried but I have the same issue: I start a kvm guest (windows 10 iot 2019) and it works, but when I start a latency test the whole system hangs completely. Could i give you more info in some way? R. Il gio 4 apr 2019, 21:05 Jan Kiszka ha scritto: > On

Re: kvm fpu warning on 4.14.89

On 21.03.19 08:04, cagnulein wrote: I've got a similar issue even with the 4.9.146 with a kvm guest on and latency on too. It's quite deterministic. Any idea? I didn't trigger your trace yet, but I can know study this splash: [ 140.794470] I-pipe: Detected illicit call from head domain

Re: kvm fpu warning on 4.14.89

I've got a similar issue even with the 4.9.146 with a kvm guest on and latency on too. It's quite deterministic. Any idea? [ 2071.952650] [ cut here ] [ 2071.952657] WARNING: CPU: 0 PID: 0 at ./arch/x86/include/asm/fpu/internal.h:674 __kernel_fpu_end+0x116/0x120 [

Re: kvm fpu warning on 4.14.89

On 11.03.19 15:36, cagnulein wrote: Hi Jan, did you get any chance to look at my issue? Not yet, sorry. I hope I can do some Xenomai stuff tomorrow, including at least a reproduction of this issue. Jan Thanks Il ven 1 mar 2019, 15:58 Jan Kiszka > ha

Re: kvm fpu warning on 4.14.89

Hi Jan, did you get any chance to look at my issue? Thanks Il ven 1 mar 2019, 15:58 Jan Kiszka ha scritto: > On 01.03.19 15:21, cagnulein wrote: > > Hi, with the last git the warning disappear, thanks. > > Now I would like to submit a new issue : with the last git and with the > 4.14.89 > >

Re: kvm fpu warning on 4.14.89

On 01.03.19 15:21, cagnulein wrote: Hi, with the last git the warning disappear, thanks. Now I would like to submit a new issue : with the last git and with the 4.14.89 also, if I run latency-test without the kvm guest on, everything works fine. If I run latency-test with the kvm guest on the

Re: kvm fpu warning on 4.14.89

Hi, with the last git the warning disappear, thanks. Now I would like to submit a new issue : with the last git and with the 4.14.89 also, if I run latency-test without the kvm guest on, everything works fine. If I run latency-test with the kvm guest on the system hangs! The entire system not only

Re: kvm fpu warning on 4.14.89

Yes qemu on a xenomai kernel (host device). My guest is a windows 10 2019. I'm already compiling the last git. I will let you know. Thanks Il ven 1 mar 2019, 11:24 Jan Kiszka ha scritto: > On 01.03.19 10:35, cagnulein via Xenomai wrote: > > I’m testing the 4.14.89 ipipe (i was usually using

Re: kvm fpu warning on 4.14.89

On 01.03.19 10:35, cagnulein via Xenomai wrote: I’m testing the 4.14.89 ipipe (i was usually using 4.9.146) and i’ve got a deterministic warning every time i start qemu. Is it already known? Thanks for reporting. I suppose this wasn't tested in a while. Just to be sure: You are starting

kvm fpu warning on 4.14.89

I’m testing the 4.14.89 ipipe (i was usually using 4.9.146) and i’ve got a deterministic warning every time i start qemu. Is it already known? Thanks R. Mar 1 01:14:05 debiankvm kernel: [ 96.078798] WARNING: CPU: 0 PID: 1154 at ./arch/x86/include/asm/fpu/internal.h:617