Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-22 Thread Jürgen Groß
On 22.10.19 15:50, Roger Pau Monné wrote: On Tue, Oct 22, 2019 at 01:50:44PM +0200, Jürgen Groß wrote: On 22.10.19 13:25, Roger Pau Monné wrote: On Tue, Oct 22, 2019 at 01:01:09PM +0200, Jürgen Groß wrote: On 22.10.19 12:52, Roger Pau Monné wrote: On Tue, Oct 22, 2019 at 11:27:41AM +0200, Jür

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-22 Thread Roger Pau Monné
On Tue, Oct 22, 2019 at 01:50:44PM +0200, Jürgen Groß wrote: > On 22.10.19 13:25, Roger Pau Monné wrote: > > On Tue, Oct 22, 2019 at 01:01:09PM +0200, Jürgen Groß wrote: > > > On 22.10.19 12:52, Roger Pau Monné wrote: > > > > On Tue, Oct 22, 2019 at 11:27:41AM +0200, Jürgen Groß wrote: > > > > > Si

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-22 Thread Jürgen Groß
On 22.10.19 13:25, Roger Pau Monné wrote: On Tue, Oct 22, 2019 at 01:01:09PM +0200, Jürgen Groß wrote: On 22.10.19 12:52, Roger Pau Monné wrote: On Tue, Oct 22, 2019 at 11:27:41AM +0200, Jürgen Groß wrote: On 21.10.19 11:51, Sergey Dyasli wrote: Hello, While testing pv-shim from a snapshot o

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-22 Thread Roger Pau Monné
On Tue, Oct 22, 2019 at 01:01:09PM +0200, Jürgen Groß wrote: > On 22.10.19 12:52, Roger Pau Monné wrote: > > On Tue, Oct 22, 2019 at 11:27:41AM +0200, Jürgen Groß wrote: > > > On 21.10.19 11:51, Sergey Dyasli wrote: > > > > Hello, > > > > > > > > While testing pv-shim from a snapshot of staging 4.

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-22 Thread Andrew Cooper
On 22/10/2019 12:01, Jürgen Groß wrote: > On 22.10.19 12:52, Roger Pau Monné wrote: >> On Tue, Oct 22, 2019 at 11:27:41AM +0200, Jürgen Groß wrote: >>> On 21.10.19 11:51, Sergey Dyasli wrote: Hello, While testing pv-shim from a snapshot of staging 4.13 branch (with core- sc

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-22 Thread Jürgen Groß
On 22.10.19 12:52, Roger Pau Monné wrote: On Tue, Oct 22, 2019 at 11:27:41AM +0200, Jürgen Groß wrote: On 21.10.19 11:51, Sergey Dyasli wrote: Hello, While testing pv-shim from a snapshot of staging 4.13 branch (with core- scheduling patches applied), some sort of scheduling issues were uncove

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-22 Thread Roger Pau Monné
On Tue, Oct 22, 2019 at 11:27:41AM +0200, Jürgen Groß wrote: > On 21.10.19 11:51, Sergey Dyasli wrote: > > Hello, > > > > While testing pv-shim from a snapshot of staging 4.13 branch (with core- > > scheduling patches applied), some sort of scheduling issues were uncovered > > which usually leads

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-22 Thread Jürgen Groß
On 21.10.19 11:51, Sergey Dyasli wrote: Hello, While testing pv-shim from a snapshot of staging 4.13 branch (with core- scheduling patches applied), some sort of scheduling issues were uncovered which usually leads to a guest lockup (sometimes with soft lockup messages from Linux kernel). This

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-22 Thread Sergey Dyasli
After printing some debug information I see that: SMP alternatives: switching to SMP code (XEN) [1.473056] == d1v1 master_cpu 0, lock 83018e315ec8 (XEN) [1.473120] sched_null.c:344: 1 <-- d1v1 (XEN) [1.473165] == d1v1 master_cpu 1, lock 8301899c2f48 (XEN) [1.473223] Asserti

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-21 Thread Jürgen Groß
On 21.10.19 11:51, Sergey Dyasli wrote: Hello, While testing pv-shim from a snapshot of staging 4.13 branch (with core- scheduling patches applied), some sort of scheduling issues were uncovered which usually leads to a guest lockup (sometimes with soft lockup messages from Linux kernel). This

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-21 Thread Jürgen Groß
On 21.10.19 13:36, Roger Pau Monné wrote: On Mon, Oct 21, 2019 at 12:52:10PM +0200, Jürgen Groß wrote: On 21.10.19 11:51, Sergey Dyasli wrote: Hello, While testing pv-shim from a snapshot of staging 4.13 branch (with core- scheduling patches applied), some sort of scheduling issues were uncove

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-21 Thread Roger Pau Monné
On Mon, Oct 21, 2019 at 12:52:10PM +0200, Jürgen Groß wrote: > On 21.10.19 11:51, Sergey Dyasli wrote: > > Hello, > > > > While testing pv-shim from a snapshot of staging 4.13 branch (with core- > > scheduling patches applied), some sort of scheduling issues were uncovered > > which usually leads

Re: [Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-21 Thread Jürgen Groß
On 21.10.19 11:51, Sergey Dyasli wrote: Hello, While testing pv-shim from a snapshot of staging 4.13 branch (with core- scheduling patches applied), some sort of scheduling issues were uncovered which usually leads to a guest lockup (sometimes with soft lockup messages from Linux kernel). This

[Xen-devel] PV-shim 4.13 assertion failures during vcpu_wake()

2019-10-21 Thread Sergey Dyasli
Hello, While testing pv-shim from a snapshot of staging 4.13 branch (with core- scheduling patches applied), some sort of scheduling issues were uncovered which usually leads to a guest lockup (sometimes with soft lockup messages from Linux kernel). This happens more frequently on SandyBridge CPU