From: Lu Baolu <baolu.lu@linux.intel.com>
To: Will Deacon <will@kernel.org>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
Ashok Raj <ashok.raj@intel.com>,
Logan Gunthorpe <logang@deltatee.com>,
linux-kernel@vger.kernel.org, Tom Murphy <murphyt7@tcd.ie>,
Christoph Hellwig <hch@infradead.org>,
iommu@lists.linux-foundation.org,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH v5 3/7] iommu: Allow the dma-iommu api to use bounce buffers
Date: Mon, 23 Nov 2020 19:56:53 +0800 [thread overview]
Message-ID: <fe4bed62-b056-07ef-1a1f-b68e92305e26@linux.intel.com> (raw)
In-Reply-To: <20201123114705.GA10233@willie-the-truck>
Hi Will,
On 2020/11/23 19:47, Will Deacon wrote:
> On Mon, Nov 23, 2020 at 07:40:57PM +0800, Lu Baolu wrote:
>> On 2020/11/23 18:08, Christoph Hellwig wrote:
>>>> + /*
>>>> + * If both the physical buffer start address and size are
>>>> + * page aligned, we don't need to use a bounce page.
>>>> + */
>>>> + if (IS_ENABLED(CONFIG_SWIOTLB) && dev_is_untrusted(dev) &&
>>>> + iova_offset(iovad, phys | org_size)) {
>>>> + aligned_size = iova_align(iovad, org_size);
>>>> + phys = swiotlb_tbl_map_single(dev,
>>>> + phys_to_dma(dev, io_tlb_start),
>>>> + phys, org_size, aligned_size, dir, attrs);
>>>
>>> swiotlb_tbl_map_single takes one less argument in 5.10-rc now.
>>>
>>
>> Yes. But Will's iommu/next branch is based on 5.10-rc3. I synced with
>> him, we agreed to keep it 5.10-rc3 and resolve this conflict when
>> merging it.
>
> That's right, although I failed to appreciate the conflict was due to a
> change in function prototype rather than just a context collision. So
> I've updated the vt-d branch to contain the stuff fron Konrad:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=for-next/iommu/vt-d
>
> Sorry for messing you around!
It's okay. I will re-base the patch series later.
Best regards,
baolu
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next prev parent reply other threads:[~2020-11-23 11:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-20 10:17 [PATCH v5 0/7] Convert the intel iommu driver to the dma-iommu api Lu Baolu
2020-11-20 10:17 ` [PATCH v5 1/7] iommu: Handle freelists when using deferred flushing in iommu drivers Lu Baolu
2020-11-20 10:17 ` [PATCH v5 2/7] iommu: Add iommu_dma_free_cpu_cached_iovas() Lu Baolu
2020-11-20 10:17 ` [PATCH v5 3/7] iommu: Allow the dma-iommu api to use bounce buffers Lu Baolu
2020-11-23 10:08 ` Christoph Hellwig
2020-11-23 11:40 ` Lu Baolu
2020-11-23 11:47 ` Will Deacon
2020-11-23 11:56 ` Lu Baolu [this message]
2020-11-20 10:17 ` [PATCH v5 4/7] iommu: Add quirk for Intel graphic devices in map_sg Lu Baolu
2020-11-20 10:17 ` [PATCH v5 5/7] iommu/vt-d: Update domain geometry in iommu_ops.at(de)tach_dev Lu Baolu
2020-11-20 10:17 ` [PATCH v5 6/7] iommu/vt-d: Convert intel iommu driver to the iommu ops Lu Baolu
2020-11-20 10:17 ` [PATCH v5 7/7] iommu/vt-d: Cleanup after converting to dma-iommu ops Lu Baolu
2020-11-20 12:24 ` [PATCH v5 0/7] Convert the intel iommu driver to the dma-iommu api Chris Wilson
2020-11-20 13:39 ` Lu Baolu
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