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[220.132.236.182]) by smtp.gmail.com with ESMTPSA id l127sm57943938pgl.48.2020.01.01.19.12.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Jan 2020 19:12:44 -0800 (PST) From: Zong Li To: palmer@dabbelt.com, paul.walmsley@sifive.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/2] riscv: mm: add support for CONFIG_DEBUG_VIRTUAL Date: Thu, 2 Jan 2020 11:12:38 +0800 Message-Id: <20200102031240.44484-1-zong.li@sifive.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200101_191245_551826_026FEF81 X-CRM114-Status: UNSURE ( 7.04 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Zong Li Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org This patch implements CONFIG_DEBUG_VIRTUAL to do additional checks on virt_to_phys and __pa_symbol calls. virt_to_phys used for linear mapping check, and __pa_symbol used for kernel symbol check. In current RISC-V, kernel image maps to linear mapping area. If CONFIG_DEBUG_VIRTUAL is disable, these two functions calculate the offset on the address feded directly without any checks. Zong Li (2): riscv: mm: add support for CONFIG_DEBUG_VIRTUAL riscv: mm: use __pa_symbol for kernel symbols arch/riscv/Kconfig | 1 + arch/riscv/include/asm/page.h | 16 +++++++++++++-- arch/riscv/mm/Makefile | 2 ++ arch/riscv/mm/init.c | 12 ++++++------ arch/riscv/mm/physaddr.c | 37 +++++++++++++++++++++++++++++++++++ 5 files changed, 60 insertions(+), 8 deletions(-) create mode 100644 arch/riscv/mm/physaddr.c -- 2.24.1