Re: [PATCH v4 4/6] iommu/sva: Use GFP_KERNEL for pasid allocation

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To: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, iommu@xxxxxxxxxxxxxxx, Jason Gunthorpe <jgg@xxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, X86 Kernel <x86@xxxxxxxxxx>, bp@xxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, corbet@xxxxxxx, vkoul@xxxxxxxxxx, dmaengine@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx
Subject: Re: [PATCH v4 4/6] iommu/sva: Use GFP_KERNEL for pasid allocation
From: Baolu Lu <baolu.lu@xxxxxxxxxxxxxxx>
Date: Thu, 2 Mar 2023 21:04:07 +0800
Cc: baolu.lu@xxxxxxxxxxxxxxx, Robin Murphy <robin.murphy@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, David Woodhouse <dwmw2@xxxxxxxxxxxxx>, Raj Ashok <ashok.raj@xxxxxxxxx>, "Tian, Kevin" <kevin.tian@xxxxxxxxx>, Yi Liu <yi.l.liu@xxxxxxxxx>, "Yu, Fenghua" <fenghua.yu@xxxxxxxxx>, Dave Jiang <dave.jiang@xxxxxxxxx>, Kirill Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
In-reply-to: <20230301235646.2692846-5-jacob.jun.pan@linux.intel.com>
References: <20230301235646.2692846-1-jacob.jun.pan@linux.intel.com> <20230301235646.2692846-5-jacob.jun.pan@linux.intel.com>
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0

On 2023/3/2 7:56, Jacob Pan wrote:

We’re not using  spinlock-protected IOASID allocation anymore, there’s
no need for GFP_ATOMIC.

Signed-off-by: Jacob Pan<jacob.jun.pan@xxxxxxxxxxxxxxx>


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

Best regards,
baolu

References:
- [PATCH v4 0/6] Remove VT-d virtual command interface and IOASID
  - From: Jacob Pan
- [PATCH v4 4/6] iommu/sva: Use GFP_KERNEL for pasid allocation
  - From: Jacob Pan

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