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Date:   Mon, 10 Dec 2018 13:51:13 -0800
From:   "Luck, Tony" <tony.luck@intel.com>
To:     Christoph Hellwig <hch@lst.de>
Cc:     iommu@lists.linux-foundation.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Jesper Dangaard Brouer <brouer@redhat.com>,
        Tariq Toukan <tariqt@mellanox.com>,
        Ilias Apalodimas <ilias.apalodimas@linaro.org>,
        Toke =?iso-8859-1?Q?H=F8iland-J=F8rgensen?= <toke@toke.dk>,
        Robin Murphy <robin.murphy@arm.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Fenghua Yu <fenghua.yu@intel.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Keith Busch <keith.busch@intel.com>,
        Jonathan Derrick <jonathan.derrick@intel.com>,
        linux-pci@vger.kernel.org, linux-ia64@vger.kernel.org,
        x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] avoid indirect calls for DMA direct mappings v2
Message-ID: <20181210215113.GA22180@agluck-desk>
References: <20181207190720.18517-1-hch@lst.de>
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On Fri, Dec 07, 2018 at 11:07:05AM -0800, Christoph Hellwig wrote:
> This works is based on the dma-mapping tree, so you probably want to
> want this git tree for testing:
> 
>     git://git.infradead.org/users/hch/misc.git dma-direct-calls.2

Pulled this tree. Got HEAD

	33b9fc015171 ("dma-mapping: bypass indirect calls for dma-direct")

But the ia64 build fails with:

arch/ia64/mm/init.c:75:21: warning: 'enum dma_data_direction' declared inside parameter list [enabled by default]
arch/ia64/mm/init.c:75:21: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
arch/ia64/mm/init.c:75:40: error: parameter 4 ('dir') has incomplete type
arch/ia64/mm/init.c:74:6: error: function declaration isn't a prototype [-Werror=strict-prototypes]
arch/ia64/mm/init.c: In function 'arch_sync_dma_for_cpu':
arch/ia64/mm/init.c:77:2: error: implicit declaration of function '__phys_to_pfn' [-Werror=implicit-function-declaration]

-Tony