Re: [PATCH v5 02/11] iommu/dma: use iommu_put_pages_list() to releae freelist

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To: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
Subject: Re: [PATCH v5 02/11] iommu/dma: use iommu_put_pages_list() to releae freelist
From: David Rientjes <rientjes@xxxxxxxxxx>
Date: Fri, 15 Mar 2024 14:28:02 -0700 (PDT)
Cc: akpm@xxxxxxxxxxxxxxxxxxxx, alim.akhtar@xxxxxxxxxxx, alyssa@xxxxxxxxxxxxx, asahi@xxxxxxxxxxxxxxx, baolu.lu@xxxxxxxxxxxxxxx, bhelgaas@xxxxxxxxxx, cgroups@xxxxxxxxxxxxxxx, corbet@xxxxxxx, david@xxxxxxxxxx, dwmw2@xxxxxxxxxxxxx, hannes@xxxxxxxxxxx, heiko@xxxxxxxxx, iommu@xxxxxxxxxxxxxxx, jernej.skrabec@xxxxxxxxx, jonathanh@xxxxxxxxxx, joro@xxxxxxxxxx, krzysztof.kozlowski@xxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-rockchip@xxxxxxxxxxxxxxxxxxx, linux-samsung-soc@xxxxxxxxxxxxxxx, linux-sunxi@xxxxxxxxxxxxxxx, linux-tegra@xxxxxxxxxxxxxxx, lizefan.x@xxxxxxxxxxxxx, marcan@xxxxxxxxx, mhiramat@xxxxxxxxxx, m.szyprowski@xxxxxxxxxxx, paulmck@xxxxxxxxxx, rdunlap@xxxxxxxxxxxxx, robin.murphy@xxxxxxx, samuel@xxxxxxxxxxxx, suravee.suthikulpanit@xxxxxxx, sven@xxxxxxxxxxxxx, thierry.reding@xxxxxxxxx, tj@xxxxxxxxxx, tomas.mudrunka@xxxxxxxxx, vdumpa@xxxxxxxxxx, wens@xxxxxxxx, will@xxxxxxxxxx, yu-cheng.yu@xxxxxxxxx, bagasdotme@xxxxxxxxx, mkoutny@xxxxxxxx
In-reply-to: <20240222173942.1481394-3-pasha.tatashin@soleen.com>
References: <20240222173942.1481394-1-pasha.tatashin@soleen.com> <20240222173942.1481394-3-pasha.tatashin@soleen.com>

On Thu, 22 Feb 2024, Pasha Tatashin wrote:

> Free the IOMMU page tables via iommu_put_pages_list(). The page tables
> were allocated via iommu_alloc_* functions in architecture specific
> places, but are released in dma-iommu if the freelist is gathered during
> map/unmap operations into iommu_iotlb_gather data structure.
> 
> Currently, only iommu/intel that does that.
> 
> Signed-off-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>

References:
- [PATCH v5 00/11] IOMMU memory observability
  - From: Pasha Tatashin
- [PATCH v5 02/11] iommu/dma: use iommu_put_pages_list() to releae freelist
  - From: Pasha Tatashin

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