; de...@linuxdriverproject.org;
> > o...@aepfle.de;
> > a...@canonical.com; vkuzn...@redhat.com; jasow...@redhat.com;
> > leann.ogasaw...@canonical.com; marcelo.ce...@canonical.com; Stephen
> > Hemminger
> > ; KY Srinivasan ;
> > x...@kernel.org;
> > j
...@redhat.com; jasow...@redhat.com;
> leann.ogasaw...@canonical.com; marcelo.ce...@canonical.com; Stephen Hemminger
> ; KY Srinivasan ; x...@kernel.org;
> j...@pun.org
> Subject: Re: [PATCH v2 char-misc 1/1] Drivers: hv: vmbus: Implement Direct
> Mode for stimer0
>
> On Mo
On Mon, Jan 22, 2018 at 03:29:29PM -0700, mikel...@exchange.microsoft.com wrote:
> +/*
> + * If false, we're using the old mechanism for stimer0 interrupts
> + * where it sends a VMbus message when it expires. The old
> + * mechanism is used if Direct Mode is explicitly disabled
> + * by the module
From: Michael Kelley
The 2016 version of Hyper-V offers the option to operate the guest VM
per-vcpu stimer's in Direct Mode, which means the timer interupts on its
own vector rather than queueing a VMbus message. Direct Mode reduces
timer processing overhead in both the hypervisor and the guest,
