Re: [Xen-devel] Xen optimization

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 12 Dec 2018, Andrii Anisov wrote:
> On 12.12.18 11:46, Andrii Anisov wrote:
> > Digging into that now.
> I got it. My u-boot starts TBM in hyp mode. But them both miss setting
> HCR_EL2.IMO, so no interrupt exception was taken in hyp.
> OK, for my baremetal TBM in hyp, numbers are:
> 
> max=840 warm_max=120 min=120 avg=127
> 
> I guess, warm_max and min are one tick of the system timer. And it seems to me
> that one tick of the system timer is the lower limit of the irq latency by HW
> design.

Thanks for the good work, Andrii!

The WARM_MAX improvements for vwfi=native with your optimizations are 
impressive.

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