RE: [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()

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Subject: RE: [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
Date: Tue, 17 Jan 2023 03:35:08 +0000
Accept-language: en-US
Cc: "linux-s390@xxxxxxxxxxxxxxx" <linux-s390@xxxxxxxxxxxxxxx>, "kvm@xxxxxxxxxxxxxxx" <kvm@xxxxxxxxxxxxxxx>, "nouveau@xxxxxxxxxxxxxxxxxxxxx" <nouveau@xxxxxxxxxxxxxxxxxxxxx>, "linux-rdma@xxxxxxxxxxxxxxx" <linux-rdma@xxxxxxxxxxxxxxx>, "linux-arm-msm@xxxxxxxxxxxxxxx" <linux-arm-msm@xxxxxxxxxxxxxxx>, Niklas Schnelle <schnelle@xxxxxxxxxxxxx>, "linux-remoteproc@xxxxxxxxxxxxxxx" <linux-remoteproc@xxxxxxxxxxxxxxx>, "iommu@xxxxxxxxxxxxxxx" <iommu@xxxxxxxxxxxxxxx>, "dri-devel@xxxxxxxxxxxxxxxxxxxxx" <dri-devel@xxxxxxxxxxxxxxxxxxxxx>, "linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx" <linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, "netdev@xxxxxxxxxxxxxxx" <netdev@xxxxxxxxxxxxxxx>, "ath10k@xxxxxxxxxxxxxxxxxxx" <ath10k@xxxxxxxxxxxxxxxxxxx>, "linux-wireless@xxxxxxxxxxxxxxx" <linux-wireless@xxxxxxxxxxxxxxx>, "linux-tegra@xxxxxxxxxxxxxxx" <linux-tegra@xxxxxxxxxxxxxxx>, Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>, "virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx" <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, "ath11k@xxxxxxxxxxxxxxxxxxx" <ath11k@xxxxxxxxxxxxxxxxxxx>, "linux-arm-kernel@xxxxxxxxxxxxxxxxxxx" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, "linux-media@xxxxxxxxxxxxxxx" <linux-media@xxxxxxxxxxxxxxx>
In-reply-to: <6-v1-6e8b3997c46d+89e-iommu_map_gfp_jgg@nvidia.com>
References: <0-v1-6e8b3997c46d+89e-iommu_map_gfp_jgg@nvidia.com> <6-v1-6e8b3997c46d+89e-iommu_map_gfp_jgg@nvidia.com>

> From: Jason Gunthorpe <jgg@xxxxxxxxxx>
> Sent: Saturday, January 7, 2023 12:43 AM
> 
> @@ -2676,7 +2676,7 @@ static int copy_context_table(struct intel_iommu
> *iommu,
>  			if (!old_ce)
>  				goto out;
> 
> -			new_ce = alloc_pgtable_page(iommu->node);
> +			new_ce = alloc_pgtable_page(iommu->node,
> GFP_KERNEL);

GFP_ATOMIC

Follow-Ups:
- Re: [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
  - From: Jason Gunthorpe

References:
- [PATCH 0/8] Let iommufd charge IOPTE allocations to the memory cgroup
  - From: Jason Gunthorpe
- [PATCH 6/8] iommu/intel: Add a gfp parameter to alloc_pgtable_page()
  - From: Jason Gunthorpe

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