linux-kernel - Re: [PATCH v3 2/2] misc: pvpanic: introduce module parameter 'events'

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Message-ID: <429436d3-ddd7-a1d6-4ed6-1f0932f2150e@redhat.com>
Date:   Mon, 11 Jan 2021 19:27:16 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     zhenwei pi <pizhenwei@...edance.com>, arnd@...db.de,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] misc: pvpanic: introduce module parameter 'events'

On 09/01/21 12:31, Greg KH wrote:
>> Also considering that there will not be more than one copy of this device
>> (it doesn't make sense as they would all do exactly the same thing), in this
>> case a module parameter really seems to be the simplest way to configure it.
>
> So you never can have more than one of these in the system at one time?
> Because if this ever becomes not true, the module parameter is a mess...

There shouldn't be.  The device is only telling the host about 
panic-related events in the guest.  The multiplexing of events to 
multiple interested listeners happens on the other side.

Paolo