linux-kernel - Re: [PATCH 12/21] dma-iommu: factor atomic pool allocations into helpers

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Message-ID: <6d99cda0-b7a9-49f2-fbdb-6563fcdd3309@arm.com>
Date:   Mon, 29 Apr 2019 13:02:31 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     Christoph Hellwig <hch@....de>
Cc:     Joerg Roedel <joro@...tes.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/21] dma-iommu: factor atomic pool allocations into
 helpers

On 29/04/2019 12:49, Christoph Hellwig wrote:
> On Tue, Apr 23, 2019 at 11:01:44AM +0100, Robin Murphy wrote:
>> Wouldn't this suffice? Since we also use alloc_pages() in the coherent
>> atomic case, the free path should already be able to deal with it.
>>
>> Let me take a proper look at v3 and see how it all looks in context.
> 
> Any comments on v3?  I've been deferring lots of other DMA work to
> not create conflicts, so I'd hate to miss this merge window.

Ah, I did skim the commits in the branch, but I'll run through again and 
reply on the patches while my head's still in email mode...

Robin.