From mboxrd@z Thu Jan 1 00:00:00 1970 From: zhaoshenglong@huawei.com (Shannon Zhao) Date: Tue, 17 Nov 2015 21:10:50 +0800 Subject: [PATCH v3 56/62] arm/acpi: Deny MMIO access of UART In-Reply-To: <564B17E2.8030205@citrix.com> References: <1447753261-7552-1-git-send-email-shannon.zhao@linaro.org> <1447753261-7552-57-git-send-email-shannon.zhao@linaro.org> <564B17E2.8030205@citrix.com> Message-ID: <564B275A.6060309@huawei.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 2015/11/17 20:04, Julien Grall wrote: > On 17/11/15 09:40, shannon.zhao at linaro.org wrote: >> From: Shannon Zhao >> >> Firstly it permits full MMIO capabilities for Dom0. Then deny MMIO >> access of UART device. > > I'm nearly sure we want to deny other MMIO such as the GIC regions and SMMU. > But Dom0 will not know the real GIC hardware MMIO space, how would it map these regions? In case of wrong use? Regarding SMMU, since it doesn't support now, so I didn't add it but it could be added later. -- Shannon