linux-kernel - Re: [PATCH 07/24] iommu/dma: Move domain lookup into __iommu_dma

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Message-ID: <20190522155708.GA29904@lst.de>
Date:   Wed, 22 May 2019 17:57:08 +0200
From:   Christoph Hellwig <hch@....de>
To:     Robin Murphy <robin.murphy@....com>
Cc:     Christoph Hellwig <hch@....de>, Tom Murphy <tmurphy@...sta.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 07/24] iommu/dma: Move domain lookup into
 __iommu_dma_{map, unmap}

On Wed, May 22, 2019 at 02:34:49PM +0100, Robin Murphy wrote:
> On 20/05/2019 08:29, Christoph Hellwig wrote:
>> From: Robin Murphy <robin.murphy@....com>
>>
>> Most of the callers don't care, and the couple that do already have the
>> domain to hand for other reasons are in slow paths where the (trivial)
>> overhead of a repeated lookup will be utterly immaterial.
>>
>> Signed-off-by: Robin Murphy <robin.murphy@....com>
>> [hch: dropped the hunk touching iommu_dma_get_msi_page to avoid a
>>   conflict with another series]
>
> Since the MSI changes made it into 5.2, do you want to resurrect that hunk 
> here, or shall I spin it up as a follow-on patch?

Either way is fine with me.