linux-kernel - Re: [PATCH] iommu: Remove unused IOMMU_SYS_CACHE

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Date:   Fri, 10 Jul 2020 14:05:27 +0100
From:   Will Deacon <will@...nel.org>
To:     Joerg Roedel <joro@...tes.org>
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com, Robin Murphy <robin.murphy@....com>,
        "Isaac J. Manjarres" <isaacm@...eaurora.org>,
        Christoph Hellwig <hch@....de>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Rob Clark <robdclark@...il.com>
Subject: Re: [PATCH] iommu: Remove unused IOMMU_SYS_CACHE_ONLY flag

Hi Joerg,

On Fri, Jul 10, 2020 at 02:58:32PM +0200, Joerg Roedel wrote:
> On Fri, Jul 03, 2020 at 05:25:48PM +0100, Will Deacon wrote:
> > The IOMMU_SYS_CACHE_ONLY flag was never exposed via the DMA API and
> > has no in-tree users. Remove it.
> > 
> > Cc: Robin Murphy <robin.murphy@....com>
> > Cc: "Isaac J. Manjarres" <isaacm@...eaurora.org>
> > Cc: Joerg Roedel <joro@...tes.org>
> > Cc: Christoph Hellwig <hch@....de>
> > Cc: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
> > Cc: Rob Clark <robdclark@...il.com>
> > Signed-off-by: Will Deacon <will@...nel.org>
> > ---
> > 
> > As discussed in [1], sounds like this should be a domain attribute anyway
> > when it's needed by the GPU.
> > 
> > [1] https://lore.kernel.org/r/CAF6AEGsCROVTsi2R7_aUkmH9Luoc_guMR0w0KUJc2cEgpfj79w@mail.gmail.com
> > 
> >  drivers/iommu/io-pgtable-arm.c | 3 ---
> >  include/linux/iommu.h          | 6 ------
> >  2 files changed, 9 deletions(-)
> 
> Applied, thanks.

Ah, I'd already got this queued for 5.9:

https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/log/?h=for-joerg/arm-smmu/updates

and I've queued a small number of patches on top of it now.

Are you planning to send it for 5.8? If so, I suspect I'll have to rebase.

Will