Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu

2015-12-14 Thread Sander Eikelenboom
On 2015-12-14 20:48, Eric Shelton wrote: Please note that the same issue appears to have been introduced in the recent 4.2.7 kernel. It perhaps has to do with b4ff8389ed14b849354b59ce9b360bdefcdbf99c having a matching commit e8d097151d309eb71f750bbf34e6a7ef6256da7e in linux-stable.git. The

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu

2015-12-14 Thread Sander Eikelenboom
On 2015-12-14 20:48, Eric Shelton wrote: Please note that the same issue appears to have been introduced in the recent 4.2.7 kernel. It perhaps has to do with b4ff8389ed14b849354b59ce9b360bdefcdbf99c having a matching commit e8d097151d309eb71f750bbf34e6a7ef6256da7e in linux-stable.git. The

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-02 Thread Sander Eikelenboom
On 2015-12-02 15:55, David Vrabel wrote: On 28/11/15 15:47, Sander Eikelenboom wrote: genirq: Flags mismatch irq 8. (hvc_console) vs. (rtc0) We shouldn't register an rtc_cmos device because its legacy irq conflicts with the irq needed for hvc0. For a multi VCPU guest irq 8

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-02 Thread David Vrabel
On 28/11/15 15:47, Sander Eikelenboom wrote: > genirq: Flags mismatch irq 8. (hvc_console) vs. (rtc0) We shouldn't register an rtc_cmos device because its legacy irq conflicts with the irq needed for hvc0. For a multi VCPU guest irq 8 is in use for the pv spinlocks and this

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-02 Thread David Vrabel
On 28/11/15 15:47, Sander Eikelenboom wrote: > > -rtc_cmos rtc_cmos: hctosys: unable to read the hardware clock > +hctosys: unable to open rtc device (rtc0) > > -genirq: Flags mismatch irq 8. (hvc_console) vs. (rtc0) > -hvc_open: request_irq failed with rc -16. I have

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-02 Thread Sander Eikelenboom
On 2015-12-02 00:41, Boris Ostrovsky wrote: On 12/01/2015 06:30 PM, Sander Eikelenboom wrote: On 2015-12-02 00:19, Boris Ostrovsky wrote: On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-02 Thread David Vrabel
On 28/11/15 15:47, Sander Eikelenboom wrote: > > -rtc_cmos rtc_cmos: hctosys: unable to read the hardware clock > +hctosys: unable to open rtc device (rtc0) > > -genirq: Flags mismatch irq 8. (hvc_console) vs. (rtc0) > -hvc_open: request_irq failed with rc -16. I have

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-02 Thread David Vrabel
On 28/11/15 15:47, Sander Eikelenboom wrote: > genirq: Flags mismatch irq 8. (hvc_console) vs. (rtc0) We shouldn't register an rtc_cmos device because its legacy irq conflicts with the irq needed for hvc0. For a multi VCPU guest irq 8 is in use for the pv spinlocks and this

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-02 Thread Sander Eikelenboom
On 2015-12-02 15:55, David Vrabel wrote: On 28/11/15 15:47, Sander Eikelenboom wrote: genirq: Flags mismatch irq 8. (hvc_console) vs. (rtc0) We shouldn't register an rtc_cmos device because its legacy irq conflicts with the irq needed for hvc0. For a multi VCPU guest irq 8

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-02 Thread Sander Eikelenboom
On 2015-12-02 00:41, Boris Ostrovsky wrote: On 12/01/2015 06:30 PM, Sander Eikelenboom wrote: On 2015-12-02 00:19, Boris Ostrovsky wrote: On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Sander Eikelenboom
On 2015-12-02 00:41, Boris Ostrovsky wrote: On 12/01/2015 06:30 PM, Sander Eikelenboom wrote: On 2015-12-02 00:19, Boris Ostrovsky wrote: On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Boris Ostrovsky
On 12/01/2015 06:30 PM, Sander Eikelenboom wrote: On 2015-12-02 00:19, Boris Ostrovsky wrote: On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Sander Eikelenboom
On 2015-12-02 00:19, Boris Ostrovsky wrote: On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Boris Ostrovsky
On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Boris Ostrovsky
On 12/01/2015 05:51 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Sander Eikelenboom
On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Sander Eikelenboom
On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a 4.4-rc2 kernel (current linus tree) + the tip tree

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Boris Ostrovsky
On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Sander Eikelenboom
On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Sander Eikelenboom
On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a 4.4-rc2 kernel (current linus tree) + the tip tree

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Sander Eikelenboom
On 2015-12-02 00:19, Boris Ostrovsky wrote: On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Boris Ostrovsky
On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Boris Ostrovsky
On 12/01/2015 05:51 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Sander Eikelenboom
On 2015-12-02 00:41, Boris Ostrovsky wrote: On 12/01/2015 06:30 PM, Sander Eikelenboom wrote: On 2015-12-02 00:19, Boris Ostrovsky wrote: On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Boris Ostrovsky
On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-12-01 Thread Boris Ostrovsky
On 12/01/2015 06:30 PM, Sander Eikelenboom wrote: On 2015-12-02 00:19, Boris Ostrovsky wrote: On 12/01/2015 06:00 PM, Sander Eikelenboom wrote: On 2015-12-01 23:47, Boris Ostrovsky wrote: On 11/30/2015 05:55 PM, Sander Eikelenboom wrote: On 2015-11-30 23:54, Boris Ostrovsky wrote: On

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-11-30 Thread Sander Eikelenboom
On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a 4.4-rc2 kernel (current linus tree) + the tip tree

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-11-30 Thread Boris Ostrovsky
On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a 4.4-rc2 kernel (current linus tree) + the tip tree pulled on top. Running this kernel under Xen

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-11-30 Thread Sander Eikelenboom
On 2015-11-30 23:54, Boris Ostrovsky wrote: On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a 4.4-rc2 kernel (current linus tree) + the tip tree

Re: [Xen-devel] linux 4.4 Regression: 100% cpu usage on idle pv guest under Xen with single vcpu.

2015-11-30 Thread Boris Ostrovsky
On 11/30/2015 04:46 PM, Sander Eikelenboom wrote: On 2015-11-30 22:45, Konrad Rzeszutek Wilk wrote: On Sat, Nov 28, 2015 at 04:47:43PM +0100, Sander Eikelenboom wrote: Hi all, I have just tested a 4.4-rc2 kernel (current linus tree) + the tip tree pulled on top. Running this kernel under Xen