netdev - Re: MDIO Debug Interface

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Message-ID: <20200709224806.GD1014141@lunn.ch>
Date:   Fri, 10 Jul 2020 00:48:06 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Tobias Waldekranz <tobias@...dekranz.com>, netdev@...r.kernel.org,
        f.fainelli@...il.com, hkallweit1@...il.com
Subject: Re: MDIO Debug Interface

> And, while we're at it: context switches from a VM to a host are
> expensive. And the PHY library polls around 5 MDIO registers per PHY
> every second.

Just wire up the interrupt. That stops all polling.

It would however be good to have details of what QEMU wants.

	Andrew