linux-kernel - Re: [RFC PATCH 11/11] powerpc/svm: Increase SWIOTLB buffer size

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Message-ID: <20180825085500.GA5991@lst.de>
Date:   Sat, 25 Aug 2018 10:55:00 +0200
From:   Christoph Hellwig <hch@....de>
To:     Thiago Jung Bauermann <bauerman@...ux.ibm.com>
Cc:     linuxppc-dev@...ts.ozlabs.org, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, Alexey Kardashevskiy <aik@...abs.ru>,
        Anshuman Khandual <anshuman.linux@...il.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Christoph Hellwig <hch@....de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Mike Anderson <andmike@...ux.ibm.com>,
        Paul Mackerras <paulus@...ba.org>,
        Ram Pai <linuxram@...ibm.com>,
        Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Subject: Re: [RFC PATCH 11/11] powerpc/svm: Increase SWIOTLB buffer size

> +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.