linux-kernel - Re: [PATCH] swiotlb: Suppress "Out of SW-IOMMU" errors for NO

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Date:   Wed, 2 May 2018 14:44:02 +0200
From:   Christoph Hellwig <hch@....de>
To:     Chris Wilson <chris@...is-wilson.co.uk>
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        intel-gfx@...ts.freedesktop.org,
        Christian König <christian.koenig@....com>,
        Mike Galbraith <efault@....de>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH] swiotlb: Suppress "Out of SW-IOMMU" errors for NO_WARN

On Wed, May 02, 2018 at 11:05:01AM +0100, Chris Wilson wrote:
> This extends the warning suppression from commit d0bc0c2a31c9 ("swiotlb:
> suppress warning when __GFP_NOWARN is set") to suppress the warnings
> when DMA_ATTR_NO_WARN is given by caller. In such cases the caller wants
> to handle the error themselves.

I have patches that remove swiotlb_full entirely to be posted soon.
I'll defer the patch for now.