x86-specific question: Is there a generic way to get access to the TSC frequency calibration information, as provided by modern x86 CPUs in MSRs? (User mode components cannot directly read these.)
The information is readily available in Nova's hypervisor information page (Hip), conveniently exported as a ROM. But I am not spotting a similar export for (e.g.) seL4. The data is present in the sel4 boot info structure (in core)--maybe this is accessible to components in some manner? Suggests a possible platform API, if not already present...
Suggestions?
// Steve Harp
Hello,
On 26.03.2018 21:42, Steven Harp wrote:
x86-specific question: Is there a generic way to get access to the TSC frequency calibration information, as provided by modern x86 CPUs in MSRs? (User mode components cannot directly read these.)
The information is readily available in Nova's hypervisor information page (Hip), conveniently exported as a ROM. But I
This hypervisor information page ROM is going to be dropped with [0] (and therefore with the upcoming release).
Essential information about the boot, which can't be gathered on another way by Genode, are reported as "platform_info" ROM. See the commits of [0].
Cheers,
Alex.
[0] https://github.com/genodelabs/genode/issues/2710
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Alexander Boettcher -
Steven Harp