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Date:   Thu, 22 Jul 2021 14:34:53 -0500
From:   "Suthikulpanit, Suravee" <>
To:     Xiyu Yang <>,
        Joerg Roedel <>, Will Deacon <>,,
Cc:, Xin Tan <>
Subject: Re: [PATCH] iommu/amd: Convert from atomic_t to refcount_t on

On 7/19/2021 3:32 AM, Xiyu Yang wrote:
> refcount_t type and corresponding API can protect refcounters from
> accidental underflow and overflow and further use-after-free situations.
> Signed-off-by: Xiyu Yang <>
> Signed-off-by: Xin Tan <>


Reviewed-by: Suravee Suthikulpanit <>

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