linux-kernel - [patch for-5.8 0/4] dma-direct: dma_direct_alloc

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Message-ID: <alpine.DEB.2.22.394.2006111218200.153880@chino.kir.corp.google.com>
Date:   Thu, 11 Jun 2020 12:20:25 -0700 (PDT)
From:   David Rientjes <rientjes@...gle.com>
To:     Christoph Hellwig <hch@....de>
cc:     Thomas Lendacky <thomas.lendacky@....com>,
        Brijesh Singh <brijesh.singh@....com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: [patch for-5.8 0/4] dma-direct: dma_direct_alloc_pages() fixes for
 AMD SEV

While debugging recently reported issues concerning DMA allocation
practices when CONFIG_AMD_MEM_ENCRYPT is enabled, some curiosities arose
when looking at dma_direct_alloc_pages() behavior.

Fix these up.  These are likely all stable material, so proposing for 5.8.
---
 kernel/dma/direct.c | 42 ++++++++++++++++++++++++++++++++----------
 1 file changed, 32 insertions(+), 10 deletions(-)