linux-kernel - RE: [PATCH v3 0/6] Prerequisites for NXP LS104xA SMMU enablement

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Date:   Fri, 31 May 2019 16:46:57 +0000
From:   Laurentiu Tudor <laurentiu.tudor@....com>
To:     Andreas Färber <afaerber@...e.de>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Madalin-cristian Bucur <madalin.bucur@....com>,
        Roy Pledge <roy.pledge@....com>,
        Camelia Alexandra Groza <camelia.groza@....com>,
        Leo Li <leoyang.li@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "jocke@...inera.com" <joakim.tjernlund@...inera.com>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Mian Yousaf Kaukab <yousaf.kaukab@...e.com>
Subject: RE: [PATCH v3 0/6] Prerequisites for NXP LS104xA SMMU enablement

Hello Andreas,

> -----Original Message-----
> From: Andreas Färber <afaerber@...e.de>
> Sent: Friday, May 31, 2019 7:15 PM
> 
> Hi Laurentiu,
> 
> Am 30.05.19 um 16:19 schrieb laurentiu.tudor@....com:
> > This patch series contains several fixes in preparation for SMMU
> > support on NXP LS1043A and LS1046A chips. Once these get picked up,
> > I'll submit the actual SMMU enablement patches consisting in the
> > required device tree changes.
> 
> Have you thought through what will happen if this patch ordering is not
> preserved? In particular, a user installing a future U-Boot update with
> the DTB bits but booting a stable kernel without this patch series -
> wouldn't that regress dpaa then for our customers?
> 

These are fixes for issues that popped out after enabling SMMU. 
I do not expect them to break anything.

---
Best Regards, Laurentiu