Re: [Xen-devel] domU jiffies not incrementing - timer issue? - Kernel 3.18.10 on Xen 4.5.0

[Mark Chambers <mark@xxxxxxxxxxxxxxx>]

On 31 March 2015 at 11:56, Mark Chambers <mark@xxxxxxxxxxxxxxx> wrote:

It's nested under Hyper-V in the same manner as the problematic install. I was deliberately trying to replicate the issue, but the problem doesn't manifest.

Mark

Hi,

I've got it booting.

The machine without boot problems reports the use of emulated TSC:

(XEN) TSC not marked as either constant or reliable, warp=575 (count=2)

(XEN) dom109: mode=0,ofs=0x417376aa9c8c,khz=2633032,inc=1,vtsc count: 3576850 kernel, 9534 user

The machine with problems reports no domains having emulated TSC:

(XEN) TSC has constant rate, deep Cstates possible, so not reliable, warp=0 (count=3)

(XEN) dom23: mode=0,ofs=0x41dc316839ac,khz=2208968,inc=1

(XEN) No domains have emulated TSC

I have nothing specified in the xl config for tsc_mode. If I set tsc_mode='native'Â

and restart the DomU it boots without any problems.

If I explicitly specify any of the other tsc_mode it gets stuck with jiffies not

incrementing as before.

Mark

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