linux-kernel - Re: [PATCH 19/28] gpu/drm: remove the powerpc hack in drm_legacy_sg

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Message-ID: <0f360b9cb72b80bae0d0db8150f65598c2776268.camel@kernel.crashing.org>
Date:   Fri, 10 Apr 2020 08:56:41 +1000
From:   Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:     Daniel Vetter <daniel@...ll.ch>
Cc:     Christoph Hellwig <hch@....de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>, X86 ML <x86@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Laura Abbott <labbott@...hat.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Minchan Kim <minchan@...nel.org>,
        Nitin Gupta <ngupta@...are.org>,
        Robin Murphy <robin.murphy@....com>,
        Christophe Leroy <christophe.leroy@....fr>,
        Peter Zijlstra <peterz@...radead.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-hyperv@...r.kernel.org,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        "moderated list:DMA BUFFER SHARING FRAMEWORK" 
        <linaro-mm-sig@...ts.linaro.org>,
        "open list:GENERIC INCLUDE/A..." <linux-arch@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>,
        "list@....net:IOMMU DRIVERS <iommu@...ts.linux-foundation.org>, Joerg "
         "Roedel <joro@...tes.org>," <iommu@...ts.linux-foundation.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-s390@...r.kernel.org, bpf <bpf@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 19/28] gpu/drm: remove the powerpc hack in
 drm_legacy_sg_alloc

On Thu, 2020-04-09 at 11:41 +0200, Daniel Vetter wrote:
> Now if these boxes didn't ever have agp then I think we can get away
> with deleting this, since we've already deleted the legacy radeon
> driver. And that one used vmalloc for everything. The new kms one does
> use the dma-api if the gpu isn't connected through agp

Definitely no AGP there.

Cheers
Ben.