From: Christoph Hellwig <hch@lst.de>
To: David Rientjes <rientjes@google.com>
Cc: iommu@lists.linux-foundation.org,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 1/4] dma-direct: factor out dma_set_{de,en}crypted helpers
Date: Thu, 21 Oct 2021 08:59:54 +0200 [thread overview]
Message-ID: <20211021065954.GA28712@lst.de> (raw)
In-Reply-To: <b63b1097-9110-5474-9754-a12be7dc1f4f@google.com>
On Tue, Oct 19, 2021 at 12:54:54PM -0700, David Rientjes wrote:
> > - 1 << get_order(size));
> > - if (err)
> > - goto out_free_pages;
> > - }
> > + err = dma_set_decrypted(dev, ret, size);
>
> Should be
>
> if (dma_set_decrypted(dev, ret, size))
> goto out_free_pages;
>
> ? Otherwise we ignore the value?
Yes. Except that we also need to undo the remap as well.
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next prev parent reply other threads:[~2021-10-21 7:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-19 12:29 dma-direct cleanups Christoph Hellwig
2021-10-19 12:29 ` [PATCH 1/4] dma-direct: factor out dma_set_{de,en}crypted helpers Christoph Hellwig
2021-10-19 19:54 ` David Rientjes via iommu
2021-10-21 6:59 ` Christoph Hellwig [this message]
2021-10-19 12:29 ` [PATCH 2/4] dma-direct: leak memory that can't be re-encrypted Christoph Hellwig
2021-10-19 19:56 ` David Rientjes via iommu
2021-10-21 7:22 ` Christoph Hellwig
2021-10-19 12:29 ` [PATCH 3/4] dma-direct: clean up the remapping checks in dma_direct_alloc Christoph Hellwig
2021-10-19 12:29 ` [PATCH 4/4] dma-direct: factor out a helper for DMA_ATTR_NO_KERNEL_MAPPING allocations Christoph Hellwig
2021-10-19 19:57 ` David Rientjes via iommu
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