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GET /api/patches/2196414/?format=api
{ "id": 2196414, "url": "http://patchwork.ozlabs.org/api/patches/2196414/?format=api", "web_url": "http://patchwork.ozlabs.org/project/opensbi/patch/20260213190459.2540597-3-raymondmaoca@gmail.com/", "project": { "id": 67, "url": "http://patchwork.ozlabs.org/api/projects/67/?format=api", "name": "OpenSBI development", "link_name": "opensbi", "list_id": "opensbi.lists.infradead.org", "list_email": "opensbi@lists.infradead.org", "web_url": "https://github.com/riscv/opensbi", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "https://github.com/riscv/opensbi/commit/{}" }, "msgid": "<20260213190459.2540597-3-raymondmaoca@gmail.com>", "list_archive_url": null, "date": "2026-02-13T19:04:58", "name": "[RFC,2/3] platform: generic: Add sample dts overlay for testing hwirq/domain route rules", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "3f33b0cdba4c299c7d4d83f034cb7cb86c7ebd59", "submitter": { "id": 91989, "url": "http://patchwork.ozlabs.org/api/people/91989/?format=api", "name": "Raymond Mao", "email": "raymondmaoca@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/opensbi/patch/20260213190459.2540597-3-raymondmaoca@gmail.com/mbox/", "series": [ { "id": 492133, "url": "http://patchwork.ozlabs.org/api/series/492133/?format=api", "web_url": "http://patchwork.ozlabs.org/project/opensbi/list/?series=492133", "date": "2026-02-13T19:04:57", "name": "VIRQ (Virtual IRQ) layer to support paravirtual interrupt delivery", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/492133/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2196414/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2196414/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <opensbi-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=osm1TCqZ;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20230601 header.b=C+p+WdsS;\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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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: Raymond Mao Add sample dts overlay for testing\n hwirq/domain\n route rules. Each domain uses property \"opensbi,host-irqs\" to describe one\n hwirq route rule. 'opensbi,host-irqs = <first_hwirq count> ...;'\n Content analysis details: (-1.1 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 [2607:f8b0:4864:20:0:0:0:f32 listed in]\n [list.dnswl.org]\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 -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]\n 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail\n provider\n [raymondmaoca(at)gmail.com]\n 1.0 FORGED_GMAIL_RCVD 'From' gmail.com does not match 'Received'\n headers", "X-BeenThere": "opensbi@lists.infradead.org", "X-Mailman-Version": "2.1.34", "Precedence": "list", "List-Id": "<opensbi.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/opensbi>,\n <mailto:opensbi-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/opensbi/>", "List-Post": "<mailto:opensbi@lists.infradead.org>", "List-Help": "<mailto:opensbi-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/opensbi>,\n <mailto:opensbi-request@lists.infradead.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"opensbi\" <opensbi-bounces@lists.infradead.org>", "Errors-To": "opensbi-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org" }, "content": "From: Raymond Mao <raymond.mao@riscstar.com>\n\nAdd sample dts overlay for testing hwirq/domain route rules.\nEach domain uses property \"opensbi,host-irqs\" to describe one hwirq\nroute rule.\n 'opensbi,host-irqs = <first_hwirq count> ...;'\n\nDuring cold boot, route rules are converted and cached for VIRQ\nrouting/couriering purpose.\n\nUsage:\n1. Compile the overlay.\n $ dtc -@ -I dts -O dtb -o hwirq_bind_domain.dto \\\n platform/generic/virt/hwirq_bind_domain.dts\n2. Dump the base dtb from QEMU.\n $ qemu-system-riscv64 -M virt,aia=aplic-imsic -cpu rv64,zkr=on -m 4096 \\\n -nographic -bios out/platform/generic/firmware/fw_jump.bin \\\n -machine dumpdtb=qemu.dtb\n3. Apply the overlay on the base.\n $ fdtoverlay -i qemu.dtb -o qemu_merge.dtb hwirq_bind_domain.dto\n4. Re-run QEMU with adding argument '-dtb qemu_merge.dtb'\n\nSigned-off-by: Raymond Mao <raymond.mao@riscstar.com>\n---\n platform/generic/virt/hwirq_bind_domain.dts | 79 +++++++++++++++++++++\n 1 file changed, 79 insertions(+)\n create mode 100644 platform/generic/virt/hwirq_bind_domain.dts", "diff": "diff --git a/platform/generic/virt/hwirq_bind_domain.dts b/platform/generic/virt/hwirq_bind_domain.dts\nnew file mode 100644\nindex 00000000..b836901e\n--- /dev/null\n+++ b/platform/generic/virt/hwirq_bind_domain.dts\n@@ -0,0 +1,79 @@\n+/dts-v1/;\n+/plugin/;\n+\n+/ {\n+\t/*\n+\t * Fragment 0: OpenSBI domain configuration under /chosen\n+\t */\n+\tfragment@0 {\n+\t\ttarget-path = \"/chosen\";\n+\t\t__overlay__ {\n+\t\t\topensbi-domains {\n+\t\t\t\tcompatible = \"opensbi,domain,config\";\n+\n+\t\t\t\t/*\n+\t\t\t\t * DRAM region for domain1 (2GB from 0x8000_0000).\n+\t\t\t\t * base is 64-bit: <hi lo>, order is log2(size).\n+\t\t\t\t */\n+\t\t\t\tmemregion_dram_2g: memregion_dram_2g {\n+\t\t\t\t\tcompatible = \"opensbi,domain,memregion\";\n+\t\t\t\t\tbase = <0x0 0x80000000>;\n+\t\t\t\t\torder = <31>;\n+\t\t\t\t};\n+\n+\t\t\t\t/*\n+\t\t\t\t * UART MMIO region so S-mode payload can access UART registers\n+\t\t\t\t * without fault. 0x1000_0000 size 4KB.\n+\t\t\t\t */\n+\t\t\t\tuart0_mmio: memregion_uart0 {\n+\t\t\t\t\tcompatible = \"opensbi,domain,memregion\";\n+\t\t\t\t\tbase = <0x0 0x10000000>;\n+\t\t\t\t\torder = <12>;\n+\t\t\t\t};\n+\n+\t\t\t\t/*\n+\t\t\t\t * Domain instance:\n+\t\t\t\t * - possible-harts = <cpu0 phandle> (your cpu@0 phandle is 1)\n+\t\t\t\t * - regions use label references (fdtoverlay will fixup phandles)\n+\t\t\t\t * - opensbi,host-irqs uses <first count> pairs (NO chip phandle)\n+\t\t\t\t */\n+\t\t\t\tdomain1: domain1 {\n+\t\t\t\t\tcompatible = \"opensbi,domain,instance\";\n+\n+\t\t\t\t\t/* cpu@0 phandle in your base qemu dtb is 1 */\n+\t\t\t\t\tpossible-harts = <0x1>;\n+\n+\t\t\t\t\t/*\n+\t\t\t\t\t * Keep permissive for test.\n+\t\t\t\t\t * access=0x3f: enable all M+SU R/W/X flags (test only).\n+\t\t\t\t\t */\n+\t\t\t\t\tregions = <&memregion_dram_2g 0x3f>,\n+\t\t\t\t\t\t <&uart0_mmio 0x3f>;\n+\n+\t\t\t\t\t/*\n+\t\t\t\t\t * Route rule: Bind host HWIRQs ranges to this domain.\n+\t\t\t\t\t * Format: <first_hwirq count> ...\n+\t\t\t\t\t * If no route rule matches, HWIRQs default to root domain.\n+\t\t\t\t\t *\n+\t\t\t\t\t * UART RX is hwirq=10 on QEMU virt:\n+\t\t\t\t\t * fdtget -t i qemu_merge.dtb /soc/serial@10000000 interrupts\n+\t\t\t\t\t * => \"10 4\"\n+\t\t\t\t\t *\n+\t\t\t\t\t * Start with only <10 1> for clean bring-up.\n+\t\t\t\t\t */\n+\t\t\t\t\topensbi,host-irqs = <10 1>;\n+\t\t\t\t};\n+\t\t\t};\n+\t\t};\n+\t};\n+\n+\t/*\n+\t * Fragment 1: Assign cpu0 to domain1 using label reference\n+\t */\n+\tfragment@1 {\n+\t\ttarget-path = \"/cpus/cpu@0\";\n+\t\t__overlay__ {\n+\t\t\topensbi-domain = <&domain1>;\n+\t\t};\n+\t};\n+};\n\\ No newline at end of file\n", "prefixes": [ "RFC", "2/3" ] }