Re: [PATCH v2 07/10] iommu/intel: Support the gfp argument to the map_pages op

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To: Jason Gunthorpe <jgg@xxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Matthew Rosato <mjrosato@xxxxxxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>
Subject: Re: [PATCH v2 07/10] iommu/intel: Support the gfp argument to the map_pages op
From: Baolu Lu <baolu.lu@xxxxxxxxxxxxxxx>
Date: Thu, 19 Jan 2023 19:57:20 +0800
Cc: baolu.lu@xxxxxxxxxxxxxxx, Alex Williamson <alex.williamson@xxxxxxxxxx>, ath10k@xxxxxxxxxxxxxxxxxxx, ath11k@xxxxxxxxxxxxxxxxxxx, Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>, dri-devel@xxxxxxxxxxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-arm-msm@xxxxxxxxxxxxxxx, linux-media@xxxxxxxxxxxxxxx, linux-rdma@xxxxxxxxxxxxxxx, linux-remoteproc@xxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx, linux-tegra@xxxxxxxxxxxxxxx, linux-wireless@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, nouveau@xxxxxxxxxxxxxxxxxxxxx, Niklas Schnelle <schnelle@xxxxxxxxxxxxx>, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
In-reply-to: <7-v2-ce66f632bd0d+484-iommu_map_gfp_jgg@nvidia.com>
References: <7-v2-ce66f632bd0d+484-iommu_map_gfp_jgg@nvidia.com>
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On 2023/1/19 2:00, Jason Gunthorpe wrote:

Flow it down to alloc_pgtable_page() via pfn_to_dma_pte() and
__domain_mapping().

Signed-off-by: Jason Gunthorpe<jgg@xxxxxxxxxx>


Irrelevant to this patch, GFP_ATOMIC could be changed to GFP_KERNEL in
some places. I will follow up further to clean it up.

For this patch,

Reviewed-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>

Best regards,
baolu

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References:
- [PATCH v2 07/10] iommu/intel: Support the gfp argument to the map_pages op
  - From: Jason Gunthorpe

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