[Xen-devel] Re: Recurring OOPS in latest -unstable kernel

[Kip Macy <kip.macy@xxxxxxxxx>]

Just to clarify  - this is straight out of the -unstable tree from
yesterday with no CONFIG_REGPARM. Nonetheless, a few things are
different:
CONFIG_MK8=y
CONFIG_SMP=y
# CONFIG_PREEMPT is not set

              -Kip
> 
> The same code (in netback) works in 2.6.9rc2/2.6.11.x, so something
> screws up the ringbuffers -- should we start reviewing the path down
> from hypervisor_callback?
> 
> Something strange seems to happen there with ringbuffer assignment to
> interfaces and I guess we need to review the upcall path.
> Somewhere, we may clobber an argument, possibly involving CONFIG_REGPARM
> ...
> I don't know the code well enough see it without adding a lot of
> instrumentation to the code.
> 
>

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