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[109.252.193.52]) by smtp.googlemail.com with ESMTPSA id y10sm113357lfl.240.2021.03.10.12.38.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 10 Mar 2021 12:38:47 -0800 (PST) Subject: Re: [PATCH v2] iommu/tegra-smmu: Add pagetable mappings to debugfs To: Nicolin Chen , joro@8bytes.org, thierry.reding@gmail.com, will@kernel.org References: <20210310033614.16772-1-nicoleotsuka@gmail.com> From: Dmitry Osipenko Message-ID: Date: Wed, 10 Mar 2021 23:38:47 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: <20210310033614.16772-1-nicoleotsuka@gmail.com> Content-Language: en-US Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jonathanh@nvidia.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: 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[109.252.193.52]) by smtp.googlemail.com with ESMTPSA id y10sm113357lfl.240.2021.03.10.12.38.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 10 Mar 2021 12:38:47 -0800 (PST) Subject: Re: [PATCH v2] iommu/tegra-smmu: Add pagetable mappings to debugfs To: Nicolin Chen , joro@8bytes.org, thierry.reding@gmail.com, will@kernel.org Cc: vdumpa@nvidia.com, jonathanh@nvidia.com, linux-tegra@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org References: <20210310033614.16772-1-nicoleotsuka@gmail.com> From: Dmitry Osipenko Message-ID: Date: Wed, 10 Mar 2021 23:38:47 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: <20210310033614.16772-1-nicoleotsuka@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org 10.03.2021 06:36, Nicolin Chen пишет: > This patch dumps all active mapping entries from pagetable > to a debugfs directory named "mappings". > > Ataching an example: > > SWGROUP: hc > ASID: 0 > reg: 0x250 > PTB_ASID: 0xe0080004 > as->pd_dma: 0x80004000 > { > [1023] 0xf0080013 (1) > { > PTE RANGE PHYS IOVA SIZE ATTR > #1023 - #1023 0x122e5e000 0xfffff000 0x1000 0x5 > } > } > Total PDE count: 1 > Total PTE count: 1 Addresses are 32bit on ARM32, please fix the formatting. The phys_addr_t and dma_addr_t have special printk specifiers [1]. [1] https://www.kernel.org/doc/html/latest/core-api/printk-formats.html?highlight=printk#physical-address-types-phys-addr-t as->pd_dma: 0xc026e81b0000026c { [0] 0xf0082848 (1024) { PTE RANGE PHYS IOVA SIZE ATTR #0 - #15 0xc0f9fc40bfde0000 0x0 0x10000 0x7 #16 - #47 0xc0f9fc40bfdc0000 0x10000 0x20000 0x7 #48 - #111 0xc0f9fc40bfd80000 0x30000 0x40000 0x7 #112 - #239 0xc0f9fc40bfd00000 0x70000 0x80000 0x7 #240 - #495 0xc0f9fc40bfc00000 0xf0000 0x100000 0x7 #496 - #999 0xc0f9fc40bf400000 0x1f0000 0x1f8000 0x7 #1000 - #1000 0xc0f9fc40acc40000 0x3e8000 0x1000 0x7 #1001 - #1001 0xc0f9fc40bbb95000 0x3e9000 0x1000 0x7 #1002 - #1002 0xc0f9fc40bbb97000 0x3ea000 0x1000 0x7 #1003 - #1003 0xc0f9fc40bbb91000 0x3eb000 0x1000 0x7 #1004 - #1005 0xc0f9fc40bb455000 0x3ec000 0x2000 0x7 #1006 - #1006 0xc0f9fc40bee9c000 0x3ee000 0x1000 0x7 #1007 - #1007 0xc0f9fc40bed20000 0x3ef000 0x1000 0x7 #1008 - #1008 0xc0f9fc40bbde0000 0x3f0000 0x1000 0x7 #1009 - #1009 0xc0f9fc40be465000 0x3f1000 0x1000 0x7 #1010 - #1010 0xc0f9fc40bb505000 0x3f2000 0x1000 0x7 #1011 - #1011 0xc0f9fc40bdcb9000 0x3f3000 0x1000 0x7 #1012 - #1012 0xc0f9fc40bcdf9000 0x3f4000 0x1000 0x7 #1013 - #1013 0xc0f9fc40bb6ce000 0x3f5000 0x1000 0x7 #1014 - #1014 0xc0f9fc40bcd74000 0x3f6000 0x1000 0x7 #1015 - #1015 0xc0f9fc40bd0d0000 0x3f7000 0x1000 0x7 #1016 - #1016 0xc0f9fc40bb6c5000 0x3f8000 0x1000 0x7 #1017 - #1017 0xc0f9fc40bd121000 0x3f9000 0x1000 0x7 #1018 - #1018 0xc0f9fc40bb6df000 0x3fa000 0x1000 0x7 #1019 - #1020 0xc0f9fc40bb6e9000 0x3fb000 0x2000 0x7 #1021 - #1021 0xc0f9fc40bb713000 0x3fd000 0x1000 0x7 #1022 - #1022 0xc0f9fc40bb738000 0x3fe000 0x1000 0x7 #1023 - #1023 0xc0f9fc40be444000 0x3ff000 0x1000 0x7 }