linux-kernel - Re: [PATCH] iommu/vt-d: Fix bind svm with multiple devices

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Message-ID: <20190527095536.GA8420@8bytes.org>
Date:   Mon, 27 May 2019 11:55:36 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Jacob Pan <jacob.jun.pan@...ux.intel.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        iommu@...ts.linux-foundation.org,
        David Woodhouse <dwmw2@...radead.org>,
        Raj Ashok <ashok.raj@...el.com>,
        Lu Baolu <baolu.lu@...ux.intel.com>
Subject: Re: [PATCH] iommu/vt-d: Fix bind svm with multiple devices

On Wed, May 08, 2019 at 12:22:46PM -0700, Jacob Pan wrote:
> If multiple devices try to bind to the same mm/PASID, we need to
> set up first level PASID entries for all the devices. The current
> code does not consider this case which results in failed DMA for
> devices after the first bind.
> 
> Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> Reported-by: Mike Campin <mike.campin@...el.com>
> ---
>  drivers/iommu/intel-svm.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)

Applied for v5.3, thanks.