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([218.194.32.52]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38f7f292b06sm161141a91.10.2026.07.28.09.15.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Jul 2026 09:15:16 -0700 (PDT) From: "Dylan.Wu" To: paul.walmsley@sifive.com, pjw@kernel.org Cc: palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, anup@brainfault.org, atish.patra@linux.dev, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, "Dylan.Wu" Subject: [PATCH v3 0/3] RISC-V KVM gstage page table dumper Date: Tue, 28 Jul 2026 12:14:46 -0400 Message-Id: <20260728161449.190058-1-fredwudi0305@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <3bb2f519-c70b-6c35-c404-6fbfe8adbeb1@kernel.org> References: <3bb2f519-c70b-6c35-c404-6fbfe8adbeb1@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series adds support for dumping RISC-V KVM gstage (second-stage) page tables via debugfs, allowing inspection of the guest physical address translation setup. Changes since v2: - Split the first patch into two as requested by Paul Walmsley: Patch 1 now only creates ptdump.h and moves declarations there with no functional changes (structures moved verbatim). Patch 2 handles the structure renames and per-level attribute bit parsing logic. Patch 1: Create ptdump.h and move declarations Patch 2: Use per-level attribute bits for parsing Patch 3: Register gstage ptdump with debugfs on guest creation Dylan.Wu (3): riscv: ptdump: Create ptdump.h and move declarations riscv: ptdump: Use per-level attribute bits for parsing KVM: riscv: Register ptdump with debugfs on guest creation arch/riscv/include/asm/ptdump.h | 43 ++++++++ arch/riscv/kvm/Kconfig | 12 +++ arch/riscv/kvm/Makefile | 1 + arch/riscv/kvm/ptdump.c | 177 ++++++++++++++++++++++++++++++++ arch/riscv/mm/ptdump.c | 106 ++++++++----------- 5 files changed, 275 insertions(+), 64 deletions(-) create mode 100644 arch/riscv/include/asm/ptdump.h create mode 100644 arch/riscv/kvm/ptdump.c -- 2.34.1