Subject: RE: [PATCH v4 net-next 3/3] net: ena: Add PHC documentation

From: "Arinzon, David" <[email-masked]>
Date: Thu, 21 Nov 2024 18:59:19 +0000

> On Tue, Nov 19, 2024 at 08:45:52AM +0000, Arinzon, David wrote:
> > Our device limits the number of requests per client (VM) through
> throttling.
> 
> So it sounds like this device provides time to VM guests?
> 
> If so, you might consider generating an interrupt to provide a "virtual" PPS as
> some of the other VM solutions do.  That way, you avoid all of those
> unwanted gettime() calls.
> 
> HTH,
> Richard

Hi Richard,

AWS instances currently lack support for the 1PPS signal.
Currently, time information can only be accessed via the GetTime call.
Some instance families already provide this functionality,
with the solution designed to work consistently across both bare-metal and virtualized environments.

Thanks,
David