Jan Kiszka wrote:
> Sebastian Smolorz wrote:
>
>>Jan Kiszka wrote:
>>>Are you tracing into vmalloc'ed memory?
>>
>>Yes, without CONFIG_IPIPE_TRACE_VMALLOC the system does not boot.
>
>
> Hmm, makes me wonder of some laziness of the page mapping or a missing
> lock-against-swapping causes this. Could you have a closer look at the
> tracer code if we are lacking some magic for the vmalloc trace buffer
> (compare to the xnheap code, e.g.)?
This is a known issue, the ARM architecture lacks the set_pgdir
function, needed in mm/vmalloc.c to workaround the lazy page mapping of
vmalloced areas.
--
Gilles Chanteperdrix
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