linux-kernel - Re: ensure dma_alloc_coherent always returns zeroed memory

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Message-ID: <20181220173717.GA20939@lst.de>
Date:   Thu, 20 Dec 2018 18:37:17 +0100
From:   "hch@....de" <hch@....de>
To:     Eugeniy Paltsev <eugeniy.paltsev@...opsys.com>
Cc:     "hch@....de" <hch@....de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
        "linux-xtensa@...ux-xtensa.org" <linux-xtensa@...ux-xtensa.org>,
        "linux-m68k@...ts.linux-m68k.org" <linux-m68k@...ts.linux-m68k.org>,
        "vineet.gupta1@...opsys.com" <vineet.gupta1@...opsys.com>,
        "linux-alpha@...r.kernel.org" <linux-alpha@...r.kernel.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "openrisc@...ts.librecores.org" <openrisc@...ts.librecores.org>,
        "ashutosh.dixit@...el.com" <ashutosh.dixit@...el.com>,
        "linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>,
        "linux-c6x-dev@...ux-c6x.org" <linux-c6x-dev@...ux-c6x.org>,
        "monstr@...str.eu" <monstr@...str.eu>,
        "sparclinux@...r.kernel.org" <sparclinux@...r.kernel.org>
Subject: Re: ensure dma_alloc_coherent always returns zeroed memory

Btw, can you try wit the very latests dma-mapping-for-next tree
which has a new fix from Thierry Reding that might be related.