netdev - RE: [PATCH V2 vfio 00/11] Add device DMA logging support for mlx5 driver

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Message-ID: <BN9PR11MB5276425A5FC37EEA1324A4318C919@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Thu, 21 Jul 2022 08:26:36 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Yishai Hadas <yishaih@...dia.com>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "jgg@...dia.com" <jgg@...dia.com>
CC:     "saeedm@...dia.com" <saeedm@...dia.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "Martins, Joao" <joao.m.martins@...cle.com>,
        "leonro@...dia.com" <leonro@...dia.com>,
        "maorg@...dia.com" <maorg@...dia.com>,
        "cohuck@...hat.com" <cohuck@...hat.com>
Subject: RE: [PATCH V2 vfio 00/11] Add device DMA logging support for mlx5
 driver

> From: Yishai Hadas <yishaih@...dia.com>
> Sent: Thursday, July 14, 2022 4:13 PM
> 
> It abstracts how an IOVA range is represented in a bitmap that is
> granulated by a given page_size. So it translates all the lifting of
> dealing with user pointers into its corresponding kernel addresses
> backing said user memory into doing finally the bitmap ops to change
> various bits.
> 

Don't quite understand the last sentence...