netdev - Re: [PATCH 08/18] iommu/fsl_pamu: merge pamu_set_liodn and map

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Date:   Thu, 1 Apr 2021 11:34:08 +0200
From:   Christoph Hellwig <hch@....de>
To:     Will Deacon <will@...nel.org>
Cc:     Christoph Hellwig <hch@....de>, Joerg Roedel <joro@...tes.org>,
        Li Yang <leoyang.li@....com>,
        Michael Ellerman <mpe@...erman.id.au>,
        David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: Re: [PATCH 08/18] iommu/fsl_pamu: merge pamu_set_liodn and
 map_liodn

On Tue, Mar 30, 2021 at 01:46:51PM +0100, Will Deacon wrote:
> > +	ret = pamu_config_ppaace(liodn, geom->aperture_start,
> > +				 geom->aperture_end - 1, ~(u32)0,
> > +				 0, dma_domain->snoop_id, dma_domain->stash_id,
> > +				 PAACE_AP_PERMS_QUERY | PAACE_AP_PERMS_UPDATE);
> 
> There's more '+1' / '-1' confusion here with aperture_end which I'm not
> managing to follow. What am I missing?

You did not missing anything, I messed this up.   Fixed.