linux-kernel - Re: [RFC PATCH 2/4] iommu/vt-d: Add first level page table interfaces

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Date:   Mon, 23 Sep 2019 13:31:02 -0700
From:   "Raj, Ashok" <ashok.raj@...el.com>
To:     Lu Baolu <baolu.lu@...ux.intel.com>
Cc:     Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        sanjay.k.kumar@...el.com, jacob.jun.pan@...ux.intel.com,
        kevin.tian@...el.com, yi.l.liu@...el.com, yi.y.sun@...el.com,
        iommu@...ts.linux-foundation.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Yi Sun <yi.y.sun@...ux.intel.com>,
        Ashok Raj <ashok.raj@...el.com>
Subject: Re: [RFC PATCH 2/4] iommu/vt-d: Add first level page table interfaces

On Mon, Sep 23, 2019 at 08:24:52PM +0800, Lu Baolu wrote:
> This adds functions to manipulate first level page tables
> which could be used by a scalale mode capable IOMMU unit.

s/scalale/scalable

> 
> intel_mmmap_range(domain, addr, end, phys_addr, prot)

Maybe think of a different name..? mmmap seems a bit weird :-)

>  - Map an iova range of [addr, end) to the physical memory
>    started at @phys_addr with the @prot permissions.
> 
> intel_mmunmap_range(domain, addr, end)
>  - Tear down the map of an iova range [addr, end). A page
>    list will be returned which will be freed after iotlb
>    flushing.
> 
> Cc: Ashok Raj <ashok.raj@...el.com>
> Cc: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> Cc: Kevin Tian <kevin.tian@...el.com>
> Cc: Liu Yi L <yi.l.liu@...el.com>
> Cc: Yi Sun <yi.y.sun@...ux.intel.com>
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>