From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Weinberger <richard@nod.at>
Subject: Re: [PATCH] hyperv: Add netpoll support
Date: Tue, 08 Jul 2014 22:16:52 +0200
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Cc: "devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
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To: KY Srinivasan <kys@microsoft.com>, Haiyang Zhang <haiyangz@microsoft.com>
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Am 08.07.2014 22:03, schrieb KY Srinivasan:
> The VCPU the channel is bound to is available in the channel state. You could use the following code
> Fragment to ensure that the call is made on the "right" cpu:
> 
> smp_call_function_single(dev->channel->target_cpu,
>                                          netvsc_channel_cb, dev->channel, true);

This won't work as netpoll runs with IRQs disabled.
->ndo_poll_controller() has to make sure that SKBs can be received and transmitted
while IRQs are off. I thought calling the channel callback by hand would be enough
to receive SKBs.

Thanks,
//richard