linux-kernel - Re: [PATCH v6 0/5] Define EINVAL as device/domain incompatibility

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Date:   Mon, 26 Sep 2022 15:34:19 -0700
From:   Nicolin Chen <nicolinc@...dia.com>
To:     Joerg Roedel <joro@...tes.org>
CC:     <will@...nel.org>, <robin.murphy@....com>, <jgg@...dia.com>,
        <kevin.tian@...el.com>, <quic_jjohnson@...cinc.com>,
        <suravee.suthikulpanit@....com>, <robdclark@...il.com>,
        <dwmw2@...radead.org>, <baolu.lu@...ux.intel.com>,
        <yong.wu@...iatek.com>, <matthias.bgg@...il.com>,
        <orsonzhai@...il.com>, <baolin.wang@...ux.alibaba.com>,
        <zhang.lyra@...il.com>, <thierry.reding@...il.com>,
        <vdumpa@...dia.com>, <jonathanh@...dia.com>,
        <jean-philippe@...aro.org>, <shameerali.kolothum.thodi@...wei.com>,
        <tglx@...utronix.de>, <christophe.jaillet@...adoo.fr>,
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        <quic_saipraka@...cinc.com>, <jon@...id-run.com>,
        <iommu@...ts.linux.dev>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-arm-msm@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-tegra@...r.kernel.org>,
        <virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH v6 0/5] Define EINVAL as device/domain incompatibility

On Mon, Sep 26, 2022 at 02:23:05PM +0200, Joerg Roedel wrote:
> External email: Use caution opening links or attachments
> 
> 
> Hi Nicolin,
> 
> On Fri, Sep 23, 2022 at 12:16:29AM -0700, Nicolin Chen wrote:
> > This series is to replace the previous EMEDIUMTYPE patch in a VFIO series:
> > https://lore.kernel.org/kvm/Yxnt9uQTmbqul5lf@8bytes.org/
> 
> \o/
> 
> > Nicolin Chen (5):
> >   iommu/amd: Drop unnecessary checks in amd_iommu_attach_device()
> >   iommu: Add return value rules to attach_dev op and APIs
> >   iommu: Regulate EINVAL in ->attach_dev callback functions
> >   iommu: Use EINVAL for incompatible device/domain in ->attach_dev
> >   iommu: Propagate return value in ->attach_dev callback functions
> 
> This looks good to me, but I'd like to have the SMMU people have a look
> at patch 4. And I think it is too late for this to make it into 6.1, so
> please re-send after 6.1-rc1 is out.

Robin has given review comments against the similar patch in the
EMEDIUMTYPE series, though it'd be nicer to have a Reviewed-by.

I will re-send them rebasing on v6.1rc1.

Thanks!
Nic