linux-kernel - Re: [PATCH v7 08/12] powerpc/vas: Define vas_win

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Message-ID: <87378gugx3.fsf@concordia.ellerman.id.au>
Date:   Fri, 25 Aug 2017 19:37:28 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        mikey@...ling.org, stewart@...ux.vnet.ibm.com, apopple@....ibm.com,
        hbabu@...ibm.com, oohall@...il.com, linuxppc-dev@...abs.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 08/12] powerpc/vas: Define vas_win_id()

Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com> writes:

> Define an interface to return a system-wide unique id for a given VAS
> window.
>
> The vas_win_id() will be used in a follow-on patch to generate an unique
> handle for a user space receive window. Applications can use this handle
> to pair send and receive windows for fast thread-wakeup.
>
> The hardware refers to this system-wide unique id as a Partition Send
> Window ID which is expected to be used during fault handling. Hence the
> "pswid" in the function names.

Same comment as previous patch.

cheers