linux-kernel - Re: [PATCH v6.1] iommu/dma: Add support for mapping MSIs

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Date:   Fri, 9 Sep 2016 16:38:45 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Robin Murphy <robin.murphy@....com>
cc:     joro@...tes.org, will.deacon@....com,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        lorenzo.pieralisi@....com, jean-philippe.brucker@....com,
        punit.agrawal@....com, thunder.leizhen@...wei.com,
        eric.auger@...hat.com, Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6.1] iommu/dma: Add support for mapping MSIs

On Wed, 7 Sep 2016, Robin Murphy wrote:
> - Rework map_page() helper function plus insane lookup logic into
>   straightforward get_page() helper
> - Use phys_addr_t to further simplify address matching
> - Fix the bit where I neglected to actually round the doorbell
>   address to a page boundary (oops!)
> - Make the locking hardirq-safe to satisfy lockdep

That looks way better.

Acked-by: Thomas Gleixner <tglx@...utronix.de>