linux-kernel - Re: [PATCH v2] dma-remap: Align the size in dma_common_*

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Message-ID: <20200623121304.GA20261@lst.de>
Date:   Tue, 23 Jun 2020 14:13:04 +0200
From:   Christoph Hellwig <hch@....de>
To:     Eric Auger <eric.auger@...hat.com>
Cc:     eric.auger.pro@...il.com, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, hch@....de, m.szyprowski@...sung.com,
        robin.murphy@....com, peterz@...radead.org,
        akpm@...ux-foundation.org, jean-philippe@...aro.org,
        bbhushan2@...vell.com
Subject: Re: [PATCH v2] dma-remap: Align the size in dma_common_*_remap()

On Tue, Jun 23, 2020 at 02:07:55PM +0200, Eric Auger wrote:
> Running a guest with a virtio-iommu protecting virtio devices
> is broken since commit 515e5b6d90d4 ("dma-mapping: use vmap insted
> of reimplementing it"). Before the conversion, the size was
> page aligned in __get_vm_area_node(). Doing so fixes the
> regression.
> 
> Fixes: 515e5b6d90d4 ("dma-mapping: use vmap insted of reimplementing it")
> Signed-off-by: Eric Auger <eric.auger@...hat.com>

Thanks,

I've applied this locally, waiting for git.infradead.org to be back
up.