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GET /api/1.1/patches/2229553/?format=api
{ "id": 2229553, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2229553/?format=api", "web_url": "http://patchwork.ozlabs.org/project/kvm-riscv/patch/20260428131359.34872-4-fangyu.yu@linux.alibaba.com/", "project": { "id": 70, "url": "http://patchwork.ozlabs.org/api/1.1/projects/70/?format=api", "name": "Linux KVM RISC-V", "link_name": "kvm-riscv", "list_id": "kvm-riscv.lists.infradead.org", "list_email": "kvm-riscv@lists.infradead.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260428131359.34872-4-fangyu.yu@linux.alibaba.com>", "date": "2026-04-28T13:13:51", "name": "[RFC,03/11] iommu/riscv: use data structure instead of individual values", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "7f8019aa2cf76221f9e01d11f0f060adaada038d", "submitter": { "id": 91416, "url": "http://patchwork.ozlabs.org/api/1.1/people/91416/?format=api", "name": null, "email": "fangyu.yu@linux.alibaba.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/kvm-riscv/patch/20260428131359.34872-4-fangyu.yu@linux.alibaba.com/mbox/", "series": [ { "id": 501850, "url": "http://patchwork.ozlabs.org/api/1.1/series/501850/?format=api", "web_url": "http://patchwork.ozlabs.org/project/kvm-riscv/list/?series=501850", "date": "2026-04-28T13:13:48", "name": "iommu/riscv: Add hardware dirty tracking for second-stage domains", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501850/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2229553/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2229553/checks/", "tags": {}, "headers": { "Return-Path": "\n <kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=lists.infradead.org header.i=@lists.infradead.org\n header.a=rsa-sha256 header.s=bombadil.20210309 header.b=aEZc0v/W;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=linux.alibaba.com header.i=@linux.alibaba.com\n header.a=rsa-sha256 header.s=default header.b=mt+bsZhM;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=none (no SPF record) smtp.mailfrom=lists.infradead.org\n (client-ip=2607:7c80:54:3::133; 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a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20210309; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post:\n\tList-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:\n\tMessage-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:\n\tResent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:\n\tList-Owner; bh=hmZYlwzDHCUjPP64At6w1LjYtRVWmhqDc3ERl62tQZ8=; b=aEZc0v/W6ShUPd\n\t2tZ8ImzyyoucIShZzV/2J3RIV3nYDYN8n4u5gdJOyz38AI0bFpim3WCoY3j5yscRBLmzCyXE034bl\n\t4+KgjNNgj++ZKCGWhZ9gTfXQvFOxOgv4jQ+tiDH6Zb3fmXxi5rGx6dq01I3u3aXFgONKyUqucuvGG\n\tO3bjTzMKyoGvyPUE7dy9GtQQwQnlOzgrAVxNimj8iXzfdJ6Vyl2C5An9SMOPUiO3O7QtyLrNW+cAR\n\td5hWlCqJ/OLg32GbkiUkmZf1J0rDl7mKy/qXV7L6kzL3hAPrI5/4dNL3lgDw9LJQosDjwZ57vfZ3W\n\tZkPxtKPykuYJGi9WYP+A==;", "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=linux.alibaba.com; s=default;\n\tt=1777382061; h=From:To:Subject:Date:Message-Id:MIME-Version;\n\tbh=MqNgI4sv+FepWpFcUsgsx+IZ0W7HlKVhYzr2f1YWc7s=;\n\tb=mt+bsZhMwWvRjN1ZUFBaxQdkZXPVkgZW/PO766HqJBC21DdKDoVYhWM1K1i047jY80LQkQ5UZDEjKPNwZ9dlyIYwxuK2AZDULTLkRBjn4tgs3zYisCNv4Je5OzOYzNuqqXUcrqRHknrOMGkmPOrr83Oivd/OQHwK4NoVXKTSfLA=" ], "X-Alimail-AntiSpam": "\n AC=PASS;BC=-1|-1;BR=01201311R271e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033045098064;MF=fangyu.yu@linux.alibaba.com;NM=1;PH=DS;RN=24;SR=0;TI=SMTPD_---0X1ubIET_1777382056;", "From": "fangyu.yu@linux.alibaba.com", "To": "joro@8bytes.org,\n\twill@kernel.org,\n\trobin.murphy@arm.com,\n\tpjw@kernel.org,\n\tpalmer@dabbelt.com,\n\taou@eecs.berkeley.edu,\n\talex@ghiti.fr,\n\ttjeznach@rivosinc.com,\n\tjgg@ziepe.ca,\n\tkevin.tian@intel.com,\n\tbaolu.lu@linux.intel.com,\n\tvasant.hegde@amd.com,\n\tanup@brainfault.org,\n\tatish.patra@linux.dev,\n\tskhawaja@google.com,\n\tjgg@nvidia.com", "Cc": "guoren@kernel.org,\n\tkvm@vger.kernel.org,\n\tiommu@lists.linux.dev,\n\tkvm-riscv@lists.infradead.org,\n\tlinux-riscv@lists.infradead.org,\n\tlinux-kernel@vger.kernel.org,\n\tZong Li <zong.li@sifive.com>,\n\tFangyu Yu <fangyu.yu@linux.alibaba.com>", "Subject": "[RFC PATCH 03/11] iommu/riscv: use data structure instead of\n individual values", "Date": "Tue, 28 Apr 2026 21:13:51 +0800", "Message-Id": "<20260428131359.34872-4-fangyu.yu@linux.alibaba.com>", "X-Mailer": "git-send-email 2.39.3 (Apple Git-146)", "In-Reply-To": "<20260428131359.34872-1-fangyu.yu@linux.alibaba.com>", "References": "<20260428131359.34872-1-fangyu.yu@linux.alibaba.com>", "MIME-Version": "1.0", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20260428_061427_892689_E7F531D3 ", "X-CRM114-Status": "GOOD ( 11.01 )", "X-Spam-Score": "-17.6 (-----------------)", "X-Spam-Report": "Spam detection software,\n running on the system \"bombadil.infradead.org\",\n has NOT identified this incoming email as spam. The original\n message has been attached to this so you can view it or label\n similar future email. If you have any questions, see\n the administrator of that system for details.\n Content preview: From: Zong Li <zong.li@sifive.com> The parameter will be\n increased\n when we need to set up more bit fields in the device context. Use a data\n structure to wrap them up. Signed-off-by: Zong Li <zong.li@sifive.com>\n Signed-off-by:\n Fangyu Yu <fangyu.yu@linux.alibaba.com> --- drivers/iommu/riscv/iommu.c |\n 27 +++++++++++++++++ 1 file changed, 17 insertions(+), 10 [...]\n Content analysis details: (-17.6 points, 5.0 required)\n pts rule name description\n ---- ----------------------\n --------------------------------------------------\n -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no\n trust\n [115.124.30.119 listed in list.dnswl.org]\n -7.5 USER_IN_DEF_SPF_WL From: address is in the default SPF welcome-list\n 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record\n -0.0 SPF_PASS SPF: sender matches SPF record\n -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM welcome-list\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]\n 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay\n lines\n -0.5 ENV_AND_HDR_SPF_MATCH Env and Hdr From used in default SPF WL Match", "X-BeenThere": "kvm-riscv@lists.infradead.org", "X-Mailman-Version": "2.1.34", "Precedence": "list", "List-Id": "<kvm-riscv.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/kvm-riscv>,\n <mailto:kvm-riscv-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/kvm-riscv/>", "List-Post": "<mailto:kvm-riscv@lists.infradead.org>", "List-Help": "<mailto:kvm-riscv-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/kvm-riscv>,\n <mailto:kvm-riscv-request@lists.infradead.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"kvm-riscv\" <kvm-riscv-bounces@lists.infradead.org>", "Errors-To": "kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org" }, "content": "From: Zong Li <zong.li@sifive.com>\n\nThe parameter will be increased when we need to set up more\nbit fields in the device context. Use a data structure to\nwrap them up.\n\nSigned-off-by: Zong Li <zong.li@sifive.com>\nSigned-off-by: Fangyu Yu <fangyu.yu@linux.alibaba.com>\n---\n drivers/iommu/riscv/iommu.c | 27 +++++++++++++++++----------\n 1 file changed, 17 insertions(+), 10 deletions(-)", "diff": "diff --git a/drivers/iommu/riscv/iommu.c b/drivers/iommu/riscv/iommu.c\nindex 15e2a333f969..369c98b7e1e5 100644\n--- a/drivers/iommu/riscv/iommu.c\n+++ b/drivers/iommu/riscv/iommu.c\n@@ -1077,7 +1077,7 @@ static void riscv_iommu_iodir_iotinval(struct riscv_iommu_device *iommu,\n * interim translation faults.\n */\n static void riscv_iommu_iodir_update(struct riscv_iommu_device *iommu,\n-\t\t\t\t struct device *dev, u64 fsc, u64 ta)\n+\t\t\t\t struct device *dev, struct riscv_iommu_dc *new_dc)\n {\n \tstruct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);\n \tstruct riscv_iommu_dc *dc;\n@@ -1116,10 +1116,10 @@ static void riscv_iommu_iodir_update(struct riscv_iommu_device *iommu,\n \tfor (i = 0; i < fwspec->num_ids; i++) {\n \t\tdc = riscv_iommu_get_dc(iommu, fwspec->ids[i]);\n \t\ttc = READ_ONCE(dc->tc);\n-\t\ttc |= ta & RISCV_IOMMU_DC_TC_V;\n+\t\ttc |= new_dc->ta & RISCV_IOMMU_DC_TC_V;\n \n-\t\tWRITE_ONCE(dc->fsc, fsc);\n-\t\tWRITE_ONCE(dc->ta, ta & RISCV_IOMMU_PC_TA_PSCID);\n+\t\tWRITE_ONCE(dc->fsc, new_dc->fsc);\n+\t\tWRITE_ONCE(dc->ta, new_dc->ta & RISCV_IOMMU_PC_TA_PSCID);\n \t\t/* Update device context, write TC.V as the last step. */\n \t\tdma_wmb();\n \t\tWRITE_ONCE(dc->tc, tc);\n@@ -1205,22 +1205,22 @@ static int riscv_iommu_attach_paging_domain(struct iommu_domain *iommu_domain,\n \tstruct riscv_iommu_device *iommu = dev_to_iommu(dev);\n \tstruct riscv_iommu_info *info = dev_iommu_priv_get(dev);\n \tstruct pt_iommu_riscv_64_hw_info pt_info;\n-\tu64 fsc, ta;\n+\tstruct riscv_iommu_dc dc = {0};\n \n \tpt_iommu_riscv_64_hw_info(&domain->riscvpt, &pt_info);\n \n \tif (!riscv_iommu_pt_supported(iommu, pt_info.fsc_iosatp_mode))\n \t\treturn -ENODEV;\n \n-\tfsc = FIELD_PREP(RISCV_IOMMU_PC_FSC_MODE, pt_info.fsc_iosatp_mode) |\n+\tdc.fsc = FIELD_PREP(RISCV_IOMMU_PC_FSC_MODE, pt_info.fsc_iosatp_mode) |\n \t FIELD_PREP(RISCV_IOMMU_PC_FSC_PPN, pt_info.ppn);\n-\tta = FIELD_PREP(RISCV_IOMMU_PC_TA_PSCID, domain->pscid) |\n+\tdc.ta = FIELD_PREP(RISCV_IOMMU_PC_TA_PSCID, domain->pscid) |\n \t RISCV_IOMMU_PC_TA_V;\n \n \tif (riscv_iommu_bond_link(domain, dev))\n \t\treturn -ENOMEM;\n \n-\triscv_iommu_iodir_update(iommu, dev, fsc, ta);\n+\triscv_iommu_iodir_update(iommu, dev, &dc);\n \triscv_iommu_bond_unlink(info->domain, dev);\n \tinfo->domain = domain;\n \n@@ -1292,9 +1292,12 @@ static int riscv_iommu_attach_blocking_domain(struct iommu_domain *iommu_domain,\n {\n \tstruct riscv_iommu_device *iommu = dev_to_iommu(dev);\n \tstruct riscv_iommu_info *info = dev_iommu_priv_get(dev);\n+\tstruct riscv_iommu_dc dc = {0};\n+\n+\tdc.fsc = RISCV_IOMMU_FSC_BARE;\n \n \t/* Make device context invalid, translation requests will fault w/ #258 */\n-\triscv_iommu_iodir_update(iommu, dev, RISCV_IOMMU_FSC_BARE, 0);\n+\triscv_iommu_iodir_update(iommu, dev, &dc);\n \triscv_iommu_bond_unlink(info->domain, dev);\n \tinfo->domain = NULL;\n \n@@ -1314,8 +1317,12 @@ static int riscv_iommu_attach_identity_domain(struct iommu_domain *iommu_domain,\n {\n \tstruct riscv_iommu_device *iommu = dev_to_iommu(dev);\n \tstruct riscv_iommu_info *info = dev_iommu_priv_get(dev);\n+\tstruct riscv_iommu_dc dc = {0};\n+\n+\tdc.fsc = RISCV_IOMMU_FSC_BARE;\n+\tdc.ta = RISCV_IOMMU_PC_TA_V;\n \n-\triscv_iommu_iodir_update(iommu, dev, RISCV_IOMMU_FSC_BARE, RISCV_IOMMU_PC_TA_V);\n+\triscv_iommu_iodir_update(iommu, dev, &dc);\n \triscv_iommu_bond_unlink(info->domain, dev);\n \tinfo->domain = NULL;\n \n", "prefixes": [ "RFC", "03/11" ] }