[Xen-devel] Time went backwards errors booting unstable cs 17557 with 64GB memory

["Carb, Brian A" <Brian.Carb@xxxxxxxxxx>]

I've built the latest xen unstable cs 17557 to run on a multi-cell
ES7000/one. When I boot with the procs and memory from a single cell (4
cores aka 8 cpus from cell0, 32gb memory from cell0), dom0 boots cleanly
. However, if I use the memory from 2 cells (4 cores aka 8 cpus from
cell0, 64gb memory interleaved from cell0 & cell1), dom0 boots
eventually, but produces multiple Timer errors as shown below. I tried
setting numa=on but timer errors persist. FYI Xen unstable cs 17318 ran
successfully without timer errors on this multi-cell configuration.

Timer ISR/0: Time went backwards: delta=-2679966594 delta_cpu=10033406
shadow=13664567457 off=530033587 processed=16874567457
cpu_processed=14184567457
0: 14184567457
1: 16874567457
2: 16874567457
3: 16874567457
4: 16874567457
5: 16874567457
6: 16874567457
7: 16874567457

The attached serial trace shows a boot with 32gb and then a boot with
64gb. 

brian carb
unisys corporation - malvern, pa

Attachment: serport.20080505
Description: serport.20080505

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