linux-kernel - Re: [PATCH 2/2] mtd: rawnand: use bounce buffer when vmalloced data buf detected

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Message-ID: <724490481.10665.1569872374621.JavaMail.zimbra@nod.at>
Date:   Mon, 30 Sep 2019 21:39:34 +0200 (CEST)
From:   Richard Weinberger <richard@....at>
To:     Kamal Dasu <kamal.dasu@...adcom.com>
Cc:     Boris Brezillon <boris.brezillon@...labora.com>,
        Kamal Dasu <kdasu.kdev@...il.com>,
        Brian Norris <computersforpeace@...il.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Marek Vasut <marek.vasut@...il.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Boris Brezillon <bbrezillon@...nel.org>,
        Schrempf Frieder <frieder.schrempf@...tron.de>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        bcm-kernel-feedback-list@...adcom.com,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] mtd: rawnand: use bounce buffer when vmalloced data
 buf detected

----- Ursprüngliche Mail -----
> Von: "Kamal Dasu" <kamal.dasu@...adcom.com>
> This has been observed on MIPS4K and MIPS5K architectures. There is a
> check on the controller driver to use pio in such cases.

I fear your kernel misses commit:
074a1e1167af ("MIPS: Bounds check virt_addr_valid")

Thanks,
//richard