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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>,
	"iommu@lists.linux-foundation.org"
	<iommu@lists.linux-foundation.org>,
	"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()
Date: Thu, 23 Jun 2022 15:28:00 +0200	[thread overview]
Message-ID: <20220623132800.GA9262@lst.de> (raw)
In-Reply-To: <SN6PR2101MB132705E084BCC12BCDDF4E7FBFB59@SN6PR2101MB1327.namprd21.prod.outlook.com>

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.

WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Dexuan Cui <decui@microsoft.com>
Cc: "linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
	Tianyu Lan <Tianyu.Lan@microsoft.com>,
	Andrea Parri <Andrea.Parri@microsoft.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"Michael Kelley \(LINUX\)" <mikelley@microsoft.com>,
	"iommu@lists.linux-foundation.org"
	<iommu@lists.linux-foundation.org>,
	"robin.murphy@arm.com" <robin.murphy@arm.com>,
	Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH] dma-direct: use the correct size for dma_set_encrypted()
Date: Thu, 23 Jun 2022 15:28:00 +0200	[thread overview]
Message-ID: <20220623132800.GA9262@lst.de> (raw)
In-Reply-To: <SN6PR2101MB132705E084BCC12BCDDF4E7FBFB59@SN6PR2101MB1327.namprd21.prod.outlook.com>

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.
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  parent reply	other threads:[~2022-06-23 13:28 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-22 19:14 [PATCH] dma-direct: use the correct size for dma_set_encrypted() Dexuan Cui
2022-06-22 19:14 ` Dexuan Cui via iommu
2022-06-23  5:43 ` Christoph Hellwig
2022-06-23  5:43   ` Christoph Hellwig
2022-06-23  7:00   ` Dexuan Cui
2022-06-23  7:00     ` Dexuan Cui via iommu
2022-06-23  9:01     ` Robin Murphy
2022-06-23  9:01       ` Robin Murphy
2022-06-23 13:28     ` Christoph Hellwig [this message]
2022-06-23 13:28       ` Christoph Hellwig
2022-06-28 22:07 kernel test robot

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