linux-kernel - RE: [PATCH v13 07/15] iommu/smmuv3: Allow stage 1 invalidation with unmanaged ASIDs

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Message-ID: <2de03a797517452cbfeab022e12612b7@huawei.com>
Date:   Fri, 4 Dec 2020 10:20:26 +0000
From:   Shameerali Kolothum Thodi <shameerali.kolothum.thodi@...wei.com>
To:     Jean-Philippe Brucker <jean-philippe@...aro.org>
CC:     Auger Eric <eric.auger@...hat.com>,
        wangxingang <wangxingang5@...wei.com>,
        Xieyingtai <xieyingtai@...wei.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "maz@...nel.org" <maz@...nel.org>,
        "joro@...tes.org" <joro@...tes.org>,
        "will@...nel.org" <will@...nel.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "vivek.gautam@....com" <vivek.gautam@....com>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "zhangfei.gao@...aro.org" <zhangfei.gao@...aro.org>,
        "robin.murphy@....com" <robin.murphy@....com>,
        "kvmarm@...ts.cs.columbia.edu" <kvmarm@...ts.cs.columbia.edu>,
        "eric.auger.pro@...il.com" <eric.auger.pro@...il.com>,
        "Zengtao (B)" <prime.zeng@...ilicon.com>,
        qubingbing <qubingbing@...ilicon.com>
Subject: RE: [PATCH v13 07/15] iommu/smmuv3: Allow stage 1 invalidation with
 unmanaged ASIDs

Hi Jean,

> -----Original Message-----
> From: Jean-Philippe Brucker [mailto:jean-philippe@...aro.org]
> Sent: 04 December 2020 09:54
> To: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@...wei.com>
> Cc: Auger Eric <eric.auger@...hat.com>; wangxingang
> <wangxingang5@...wei.com>; Xieyingtai <xieyingtai@...wei.com>;
> kvm@...r.kernel.org; maz@...nel.org; joro@...tes.org; will@...nel.org;
> iommu@...ts.linux-foundation.org; linux-kernel@...r.kernel.org;
> vivek.gautam@....com; alex.williamson@...hat.com;
> zhangfei.gao@...aro.org; robin.murphy@....com;
> kvmarm@...ts.cs.columbia.edu; eric.auger.pro@...il.com; Zengtao (B)
> <prime.zeng@...ilicon.com>; qubingbing <qubingbing@...ilicon.com>
> Subject: Re: [PATCH v13 07/15] iommu/smmuv3: Allow stage 1 invalidation with
> unmanaged ASIDs
> 
> Hi Shameer,
> 
> On Thu, Dec 03, 2020 at 06:42:57PM +0000, Shameerali Kolothum Thodi wrote:
> > Hi Jean/zhangfei,
> > Is it possible to have a branch with minimum required SVA/UACCE related
> patches
> > that are already public and can be a "stable" candidate for future respin of
> Eric's series?
> > Please share your thoughts.
> 
> By "stable" you mean a fixed branch with the latest SVA/UACCE patches
> based on mainline? 

Yes. 

 The uacce-devel branches from
> https://github.com/Linaro/linux-kernel-uadk do provide this at the moment
> (they track the latest sva/zip-devel branch
> https://jpbrucker.net/git/linux/ which is roughly based on mainline.)

Thanks. 

Hi Eric,

Could you please take a look at the above branches and see whether it make sense
to rebase on top of either of those?

>From vSVA point of view, it will be less rebase hassle if we can do that.

Thanks,
Shameer

> Thanks,
> Jean