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| Started by | Christoph Hellwig <hch@infradead.org> |
|---|---|
| First post | 2017-06-08 10:00 +0200 |
| Last post | 2017-06-08 10:00 +0200 |
| Articles | 1 — 1 participant |
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Re: [PATCH v6 25/34] swiotlb: Add warnings for use of bounce buffers with SME Christoph Hellwig <hch@infradead.org> - 2017-06-08 10:00 +0200
| From | Christoph Hellwig <hch@infradead.org> |
|---|---|
| Date | 2017-06-08 10:00 +0200 |
| Subject | Re: [PATCH v6 25/34] swiotlb: Add warnings for use of bounce buffers with SME |
| Message-ID | <tQ0wi-1oo-31@gated-at.bofh.it> |
On Wed, Jun 07, 2017 at 02:17:32PM -0500, Tom Lendacky wrote: > Add warnings to let the user know when bounce buffers are being used for > DMA when SME is active. Since the bounce buffers are not in encrypted > memory, these notifications are to allow the user to determine some > appropriate action - if necessary. And what would the action be? Do we need a boot or other option to disallow this fallback for people who care deeply?
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