From: Lu Baolu <baolu.lu@linux.intel.com>
To: Christoph Hellwig <hch@lst.de>
Cc: alan.cox@intel.com, Stefano Stabellini <sstabellini@kernel.org>,
ashok.raj@intel.com, Jonathan Corbet <corbet@lwn.net>,
pengfei.xu@intel.com, Ingo Molnar <mingo@redhat.com>,
David Woodhouse <dwmw2@infradead.org>,
kevin.tian@intel.com,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Steven Rostedt <rostedt@goodmis.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
mika.westerberg@linux.intel.com, Alan Cox <alan@linux.intel.com>,
Juergen Gross <jgross@suse.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Mika Westerberg <mika.westerberg@intel.com>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
jacob.jun.pan@intel.com, Robin Murphy <robin.murphy@arm.com>
Subject: Re: [PATCH v6 5/8] iommu: Add bounce page APIs
Date: Sun, 18 Aug 2019 11:07:30 +0800 [thread overview]
Message-ID: <1eea1895-5063-ff33-1dd3-50371d03b3c8@linux.intel.com> (raw)
In-Reply-To: <20190816044613.GC4093@lst.de>
Hi,
On 8/16/19 12:46 PM, Christoph Hellwig wrote:
> On Fri, Aug 16, 2019 at 10:45:13AM +0800, Lu Baolu wrote:
>> Okay. I understand that adding these APIs in iommu.c is not a good idea.
>> And, I also don't think merging the bounce buffer implementation into
>> iommu_map() is feasible since iommu_map() is not DMA API centric.
>>
>> The bounce buffer implementation will eventually be part of DMA APIs
>> defined in dma-iommu.c, but currently those APIs are not ready for x86
>> use yet. So I will put them in iommu/vt-d driver for this time being and
>> will move them to dma-iommu.c later.
>
> I think they are more or less ready actually, we just need more people
> reviewing the conversions. Tom just reposted the AMD one which will need
> a few more reviews, and he has an older patchset for intel-iommu as well
> that could use a some more eyes.
>
Good progress and thanks for the update. I prefer that we merge this
patch series first since it addresses the real thunderbolt
vulnerability.
Best regards,
Lu Baolu
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next prev parent reply other threads:[~2019-08-18 3:08 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-30 4:52 [PATCH v6 0/8] iommu: Bounce page for untrusted devices Lu Baolu
2019-07-30 4:52 ` [PATCH v6 1/8] iommu/vt-d: Don't switch off swiotlb if use direct dma Lu Baolu
2019-07-30 4:52 ` [PATCH v6 2/8] PCI: Add dev_is_untrusted helper Lu Baolu
2019-07-30 4:52 ` [PATCH v6 3/8] swiotlb: Split size parameter to map/unmap APIs Lu Baolu
2019-07-30 4:52 ` [PATCH v6 4/8] swiotlb: Zero out bounce buffer for untrusted device Lu Baolu
2019-07-30 4:52 ` [PATCH v6 5/8] iommu: Add bounce page APIs Lu Baolu
2019-08-14 8:38 ` Joerg Roedel
2019-08-15 6:15 ` Lu Baolu
2019-08-15 15:48 ` Joerg Roedel
2019-08-16 2:45 ` Lu Baolu
2019-08-16 4:46 ` Christoph Hellwig
2019-08-18 3:07 ` Lu Baolu [this message]
2019-07-30 4:52 ` [PATCH v6 6/8] iommu/vt-d: Check whether device requires bounce buffer Lu Baolu
2019-07-30 4:52 ` [PATCH v6 7/8] iommu/vt-d: Add trace events for device dma map/unmap Lu Baolu
2019-07-30 4:52 ` [PATCH v6 8/8] iommu/vt-d: Use bounce buffer for untrusted devices Lu Baolu
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