From: Joerg Roedel <joro@8bytes.org>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: iommu@lists.linux-foundation.org,
David Woodhouse <dwmw2@infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Raj Ashok <ashok.raj@intel.com>
Subject: Re: [PATCH] iommu/vt-d: Fix bind svm with multiple devices
Date: Mon, 27 May 2019 11:55:36 +0200 [thread overview]
Message-ID: <20190527095536.GA8420@8bytes.org> (raw)
In-Reply-To: <1557343366-18686-1-git-send-email-jacob.jun.pan@linux.intel.com>
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@linux.intel.com>
> Reported-by: Mike Campin <mike.campin@intel.com>
> ---
> drivers/iommu/intel-svm.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
Applied for v5.3, thanks.
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WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro@8bytes.org>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
iommu@lists.linux-foundation.org,
David Woodhouse <dwmw2@infradead.org>,
Raj Ashok <ashok.raj@intel.com>,
Lu Baolu <baolu.lu@linux.intel.com>
Subject: Re: [PATCH] iommu/vt-d: Fix bind svm with multiple devices
Date: Mon, 27 May 2019 11:55:36 +0200 [thread overview]
Message-ID: <20190527095536.GA8420@8bytes.org> (raw)
In-Reply-To: <1557343366-18686-1-git-send-email-jacob.jun.pan@linux.intel.com>
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@linux.intel.com>
> Reported-by: Mike Campin <mike.campin@intel.com>
> ---
> drivers/iommu/intel-svm.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
Applied for v5.3, thanks.
next prev parent reply other threads:[~2019-05-27 9:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-08 19:22 [PATCH] iommu/vt-d: Fix bind svm with multiple devices Jacob Pan
2019-05-08 19:22 ` Jacob Pan
2019-05-20 15:33 ` Jacob Pan
2019-05-20 15:33 ` Jacob Pan
2019-05-27 9:55 ` Joerg Roedel [this message]
2019-05-27 9:55 ` Joerg Roedel
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