From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:38378 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751852AbdJEIbp (ORCPT ); Thu, 5 Oct 2017 04:31:45 -0400 Subject: Patch "iommu/arm-smmu: Set privileged attribute to 'default' instead of 'unprivileged'" has been added to the 4.9-stable tree To: sricharan@codeaurora.org, alexander.levin@verizon.com, gregkh@linuxfoundation.org, will.deacon@arm.com Cc: , From: Date: Thu, 05 Oct 2017 10:30:20 +0200 Message-ID: <1507192220105116@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled iommu/arm-smmu: Set privileged attribute to 'default' instead of 'unprivileged' to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: iommu-arm-smmu-set-privileged-attribute-to-default-instead-of-unprivileged.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Thu Oct 5 10:28:31 CEST 2017 From: Sricharan R Date: Fri, 6 Jan 2017 18:58:15 +0530 Subject: iommu/arm-smmu: Set privileged attribute to 'default' instead of 'unprivileged' From: Sricharan R [ Upstream commit e19898077cfb642fe151ba22981e795c74d9e114 ] Currently the driver sets all the device transactions privileges to UNPRIVILEGED, but there are cases where the iommu masters wants to isolate privileged supervisor and unprivileged user. So don't override the privileged setting to unprivileged, instead set it to default as incoming and let it be controlled by the pagetable settings. Acked-by: Will Deacon Signed-off-by: Sricharan R Signed-off-by: Will Deacon Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/iommu/arm-smmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1211,7 +1211,7 @@ static int arm_smmu_domain_add_master(st continue; s2cr[idx].type = type; - s2cr[idx].privcfg = S2CR_PRIVCFG_UNPRIV; + s2cr[idx].privcfg = S2CR_PRIVCFG_DEFAULT; s2cr[idx].cbndx = cbndx; arm_smmu_write_s2cr(smmu, idx); } Patches currently in stable-queue which might be from sricharan@codeaurora.org are queue-4.9/iommu-arm-smmu-set-privileged-attribute-to-default-instead-of-unprivileged.patch