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Date: Sat, 25 Aug 2018 10:55:00 +0200
From: Christoph Hellwig <hch@lst.de>
To: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org,
 linux-kernel@vger.kernel.org, Alexey Kardashevskiy <aik@ozlabs.ru>,
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 Paul Mackerras <paulus@samba.org>, Ram Pai <linuxram@us.ibm.com>,
 Anshuman Khandual <khandual@linux.vnet.ibm.com>
Subject: Re: [RFC PATCH 11/11] powerpc/svm: Increase SWIOTLB buffer size
Message-ID: <20180825085500.GA5991@lst.de>
References: <20180824025933.24319-1-bauerman@linux.ibm.com>
 <20180824025933.24319-12-bauerman@linux.ibm.com>
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> +config SWIOTLB_DEFAULT_SIZE
> +       int "Size of Software I/O TLB buffer (in MiB)"
> +       default "1024"
> +       depends on PPC_SVM
> +

This belongs into kernel/dma/Kconfig.  That being said I really
don't see why this should be a user visible Kconfig.