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Date:   Thu, 23 Jun 2022 15:28:00 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Dexuan Cui <decui@microsoft.com>
Cc:     Christoph Hellwig <hch@lst.de>,
        "m.szyprowski@samsung.com" <m.szyprowski@samsung.com>,
        "robin.murphy@arm.com" <robin.murphy@arm.com>,
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        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
        "Michael Kelley (LINUX)" <mikelley@microsoft.com>,
        Andrea Parri <Andrea.Parri@microsoft.com>,
        Tianyu Lan <Tianyu.Lan@microsoft.com>
Subject: Re: [PATCH] dma-direct: use the correct size for
 dma_set_encrypted()
Message-ID: <20220623132800.GA9262@lst.de>
References: <20220622191424.15777-1-decui@microsoft.com> <20220623054352.GA12543@lst.de> <SN6PR2101MB132705E084BCC12BCDDF4E7FBFB59@SN6PR2101MB1327.namprd21.prod.outlook.com>
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On Thu, Jun 23, 2022 at 07:00:58AM +0000, Dexuan Cui wrote:
> It looks like commit 4a37f3dd9a831 fixed a different issue?
> 
> Here my patch is for the latest mainline:
> 
> In dma_direct_alloc()'s error handling path, we pass 'size' to dma_set_encrypted():
>   out_encrypt_pages:
> 	  if (dma_set_encrypted(dev, page_address(page), size))
> 
> However, in dma_direct_free(), we pass ' 1 << page_order ' to dma_set_encrypted().
> I think the ' 1 << page_order' is incorrect and it should be 'size' as well?

Indeed.  I've applied the patch now.