Re: [PATCH v2 06/10] iommu/intel: Add a gfp parameter to alloc_pgtable_page()

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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 06/10] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
From: Baolu Lu <baolu.lu@xxxxxxxxxxxxxxx>
Date: Thu, 19 Jan 2023 19:47:42 +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: <6-v2-ce66f632bd0d+484-iommu_map_gfp_jgg@nvidia.com>
References: <6-v2-ce66f632bd0d+484-iommu_map_gfp_jgg@nvidia.com>
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On 2023/1/19 2:00, Jason Gunthorpe wrote:

This is eventually called by iommufd through intel_iommu_map_pages() and
it should not be forced to atomic. Push the GFP_ATOMIC to all callers.

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


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

Best regards,
baolu

References:
- [PATCH v2 06/10] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
  - From: Jason Gunthorpe

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