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[109.243.146.38]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-63c48ab560esm6966067a12.12.2025.10.20.08.58.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Oct 2025 08:58:10 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 9422407f-adcd-11f0-9d15-b5c5bf9af7f9 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1760975891; x=1761580691; darn=lists.xenproject.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=AAAAcMWBhBxylKcZtSq/DZF9jlzUAjaFiUSj3AuRmhc=; b=Ncy0H+2ksP0S0kcwbyiHHTygc8nVWRirQAZQJwPXtOyeQf6RW2Iqp7AzsfWCzHoPcz 5+FQ0v/EEffls9m3uJCkkcMK28yPNe13xSeYj8l88kNrxC/fLBWvWyB91ISvz2PMvGyS Qd1g1PaX0R70SU8I7WQLr7BQT0RK6jHew10xMADF4XHION25fXSp16UrlAD2slxQvMk9 ErLNkuGs1YDEdUVdMt8RMocOR58fMqb6D9bH5tVaWmIy4O9TfGdSS9I1fQoGhAjJ/qgZ 5REAMc0LhzghZ7QirZdta/xI4TWB3XmLeZxxabTzk/gt5ttxgBc/uUHGnYAoYAHbiWXu OmRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760975891; x=1761580691; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=AAAAcMWBhBxylKcZtSq/DZF9jlzUAjaFiUSj3AuRmhc=; b=pY3upC81/d/lY2uK84Qc11tTQbt4wxoVDSdyyEdVDcmk1B3pnIoTrhSGeFsUZjuTkM 2yoz7P3dYqihbYawhzktGcCDJ7Duhla5GD+XsmDVaZ1cDbP14w2RX4v39WDuPdvnrc4R 96cmoITpiug8XhRVrQThLMBCrk5NaJ2VzS7UddMzPR5xxyRU9QIYzZLNx4E2HPEmAge0 XCOLnhJlGcph6FA6maeoHmxaaS8GWWPqwzh96PzAAya6vOt3R29PeYRI0dYMDzx4wTjK SXF/Ays9nTEkQRqmuK4CA5LsdGLE9GNIH1o1DGpw0tpHHdDHv0snp4iEdMHxGZ0T8NlG zkhA== X-Gm-Message-State: AOJu0YzdlZJcRXPAw0SsgXmG9QyMFOLzt3e0FnaNK6TN55PM4qqLmiuO kdY6c9MNmwpL5FHYwGEYWArybH+TzGctUrm7uNGr0d/9YMk+cYQumN4AH7HIig== X-Gm-Gg: ASbGncvER3Jcq+/U42moQS+2apjcLLHF994EdleyI5DUFqDYgItI9AyuQdGvQKgGJTi QEpLHZ2RKpr5rBOxSZmwqd9DYxRr503mkn29wDKuZMMAkQ/x/EOYrJ2Ftyw6kUp9ibhzBDkaI4X KaTY0rg0h9Vf/GTcqb2UQp3Yos28MQ3gj8iW6VIZ2Om860mjShvchnO02d+vuFBUzLohQosaVIY JkhSl3TJ6A9R/fkM3OPOzv0FTxlLB0GHmYY3vs7zKPbtzXUiwtk8rDOUzxumQGhS7jheUUfiPIN 1k/oLqI6fXHCPaK4XDfTf4DwQApDEQ+Psz4ge1bqP0wW/kFObBP438E0CgdiYHVpD68k9/ap2tG Y6vU8T0NhtiVQ3OEUYiaghGqqgwOq95OsuL2qjqaajA0kh4KPBPcPwzuw3kwyA1d64pEWtEhlJa Dn6g3hg7mVsGJyTVnK+C2m0omeJANUzoKuYmwQrJy1C2TBqzQ/pS/fvlG28A== X-Google-Smtp-Source: AGHT+IERGa9Gycy/DAA1FGoWTbukcN1BQpnNIDAzNa4GlHAeBF+BUoerkI8EHIoW0RL9P/ugXfaXFg== X-Received: by 2002:a17:907:6d0f:b0:b0c:b51b:81f6 with SMTP id a640c23a62f3a-b647423c403mr1718978666b.43.1760975890637; Mon, 20 Oct 2025 08:58:10 -0700 (PDT) From: Oleksii Kurochko To: xen-devel@lists.xenproject.org Cc: Oleksii Kurochko , Alistair Francis , Bob Eshleman , Connor Davis , Andrew Cooper , Anthony PERARD , Michal Orzel , Jan Beulich , Julien Grall , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Stefano Stabellini , Bertrand Marquis , Volodymyr Babchuk Subject: [for 4.22 v5 00/18] xen/riscv: introduce p2m functionality Date: Mon, 20 Oct 2025 17:57:43 +0200 Message-ID: X-Mailer: git-send-email 2.51.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In this patch series are introduced necessary functions to build and manage RISC-V guest page tables and MMIO/RAM mappings. --- Changes in V5: - Addressed comments for v4. - The following patches were Acked-by: - [v5 16/18] xen/riscv: implement mfn_valid() and page - [v5 15/18] xen/riscv: implement put_page() - [v5 14/18] xen/riscv: Implement superpage splitting for p2m mappings - [v5 09/18] xen/riscv: implement function to map memory in guest p2m - [v5 07/18] xen/riscv: add new p2m types and helper macros for type classification - [v5 03/18] xen/riscv: introduce things necessary for p2m initialization --- Changes in V4: - Merged to staging: - xen/riscv: introduce sbi_remote_hfence_gvma() - xen/riscv: introduce sbi_remote_hfence_gvma_vmid() - Drop "xen/riscv: introduce page_{get,set}_xenheap_gfn()" as grant tables aren't going to be introduced for the moment. Also, drops other parts connected to grant tables support. - All other changes are patch specific. --- Changes in V3: - Introduce metadata table to store P2M types. - Use x86's way to allocate VMID. - Abstract Arm-specific p2m type name for device MMIO mappings. - All other updates please look at specific patch. --- Changes in V2: - Merged to staging: - [PATCH v1 1/6] xen/riscv: add inclusion of xen/bitops.h to asm/cmpxchg.h - New patches: - xen/riscv: implement sbi_remote_hfence_gvma{_vmid}(). - Split patch "xen/riscv: implement p2m mapping functionality" into smaller one patches: - xen/riscv: introduce page_set_xenheap_gfn() - xen/riscv: implement guest_physmap_add_entry() for mapping GFNs to MFNs - xen/riscv: implement p2m_set_entry() and __p2m_set_entry() - xen/riscv: Implement p2m_free_entry() and related helpers - xen/riscv: Implement superpage splitting for p2m mappings - xen/riscv: implement p2m_next_level() - xen/riscv: Implement p2m_entry_from_mfn() and support PBMT configuration - Move root p2m table allocation to separate patch: xen/riscv: add root page table allocation - Drop dependency of this patch series from the patch witn an introduction of SvPBMT as it was merged. - Patch "[PATCH v1 4/6] xen/riscv: define pt_t and pt_walk_t structures" was renamed to xen/riscv: introduce pte_{set,get}_mfn() as after dropping of bitfields for PTE structure, this patch introduce only pte_{set,get}_mfn(). - Rename "xen/riscv: define pt_t and pt_walk_t structures" to "xen/riscv: introduce pte_{set,get}_mfn()" as pt_t and pt_walk_t were dropped. - Introduce guest domain's VMID allocation and manegement. - Add patches necessary to implement p2m lookup: - xen/riscv: implement mfn_valid() and page reference, ownership handling helpers - xen/riscv: add support of page lookup by GFN - Re-sort patch series. - All other changes are patch-specific. Please check them. --- Oleksii Kurochko (18): xen/riscv: detect and initialize G-stage mode xen/riscv: introduce VMID allocation and manegement xen/riscv: introduce things necessary for p2m initialization xen/riscv: construct the P2M pages pool for guests xen/riscv: add root page table allocation xen/riscv: introduce pte_{set,get}_mfn() xen/riscv: add new p2m types and helper macros for type classification xen/dom0less: abstract Arm-specific p2m type name for device MMIO mappings xen/riscv: implement function to map memory in guest p2m xen/riscv: implement p2m_set_range() xen/riscv: Implement p2m_free_subtree() and related helpers xen/riscv: Implement p2m_pte_from_mfn() and support PBMT configuration xen/riscv: implement p2m_next_level() xen/riscv: Implement superpage splitting for p2m mappings xen/riscv: implement put_page() xen/riscv: implement mfn_valid() and page reference, ownership handling helpers xen/riscv: add support of page lookup by GFN xen/riscv: introduce metadata table to store P2M type xen/arch/arm/include/asm/p2m.h | 5 + xen/arch/riscv/Makefile | 3 + xen/arch/riscv/cpufeature.c | 1 + xen/arch/riscv/include/asm/Makefile | 1 - xen/arch/riscv/include/asm/cpufeature.h | 1 + xen/arch/riscv/include/asm/domain.h | 23 + xen/arch/riscv/include/asm/flushtlb.h | 13 +- xen/arch/riscv/include/asm/mm.h | 29 +- xen/arch/riscv/include/asm/p2m.h | 182 ++- xen/arch/riscv/include/asm/page.h | 37 + xen/arch/riscv/include/asm/paging.h | 20 + xen/arch/riscv/include/asm/riscv_encoding.h | 7 + xen/arch/riscv/include/asm/vmid.h | 14 + xen/arch/riscv/mm.c | 69 +- xen/arch/riscv/p2m.c | 1381 +++++++++++++++++++ xen/arch/riscv/paging.c | 139 ++ xen/arch/riscv/setup.c | 3 + xen/arch/riscv/stubs.c | 5 - xen/arch/riscv/vmid.c | 193 +++ xen/common/device-tree/dom0less-build.c | 2 +- 20 files changed, 2103 insertions(+), 25 deletions(-) create mode 100644 xen/arch/riscv/include/asm/paging.h create mode 100644 xen/arch/riscv/include/asm/vmid.h create mode 100644 xen/arch/riscv/p2m.c create mode 100644 xen/arch/riscv/paging.c create mode 100644 xen/arch/riscv/vmid.c -- 2.51.0