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Tue, 29 Sep 2020 08:46:11 +0000 From: Sherry Sun To: hch@infradead.org, sudeep.dutt@intel.com, ashutosh.dixit@intel.com, arnd@arndb.de, gregkh@linuxfoundation.org, kishon@ti.com, lorenzo.pieralisi@arm.com Cc: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-imx@nxp.com Subject: [PATCH V2 4/4] misc: vop: mapping kernel memory to user space as noncached Date: Tue, 29 Sep 2020 16:44:25 +0800 Message-Id: <20200929084425.24052-5-sherry.sun@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200929084425.24052-1-sherry.sun@nxp.com> References: <20200929084425.24052-1-sherry.sun@nxp.com> X-ClientProxiedBy: AM4PR0302CA0032.eurprd03.prod.outlook.com (2603:10a6:205:2::45) To VI1PR04MB4960.eurprd04.prod.outlook.com (2603:10a6:803:57::21) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from nxp.ap.freescale.net (119.31.174.71) by AM4PR0302CA0032.eurprd03.prod.outlook.com (2603:10a6:205:2::45) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3412.22 via Frontend Transport; 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Signed-off-by: Joakim Zhang Signed-off-by: Sherry Sun --- drivers/misc/mic/vop/vop_vringh.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/misc/mic/vop/vop_vringh.c b/drivers/misc/mic/vop/vop_vringh.c index 4d5feb39aeb7..6e193bd64ef1 100644 --- a/drivers/misc/mic/vop/vop_vringh.c +++ b/drivers/misc/mic/vop/vop_vringh.c @@ -1057,7 +1057,7 @@ static int vop_mmap(struct file *f, struct vm_area_struct *vma) } err = remap_pfn_range(vma, vma->vm_start + offset, pa >> PAGE_SHIFT, size, - vma->vm_page_prot); + pgprot_noncached(vma->vm_page_prot)); if (err) goto ret; size_rem -= size;