benh at kernel.crashing.org
Sat May 29 00:21:25 UTC 2021
On Fri, 2021-05-28 at 12:51 +0100, Luke Kenneth Casson Leighton wrote:
> not sure where this might best else be sent.
> Lauri has written a mini kvm runner for ppc64 with the intention to
> allow single-step execution where a memory dump and full register
> may be carried out after every single instruction. it manages around
> 35k instructions per second this way.
> this to be able to compare against hardware, qemu, simulators,
> anything and everything, running benchmarks unit tests full programs
> full virtualised OSes, anything.
> unfortunately, all FP operations after single-step through the entire
> program are zero contents.
> we suspect that insufficient context / state is saved/restored on the
> is this a known issue or something that was overlooked?
You man in qemu ? You have MSR:FP set ?
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