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

[David Vrabel <david.vrabel@xxxxxxxxxx>]

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. 00000000 (hvc_console) vs. 00000000 (rtc0)
> -hvc_open: request_irq failed with rc -16.

I have reproduced this issue.  We really shouldn't have an RTC device in
a PV guest and I think this irq conflict breaks hvc0.

David

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