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AJvYcCUYS4/ymR416m7kP9vzpDbejVJ0JmZdiy9jdeYLNLK3imE1XeKY4hK+R0M5bj/7CRBo+bkIsX8Isk7nfuD+ElDrEKX1lk5KQeQxO9Jd X-Gm-Message-State: AOJu0YxFeY9NMhEeWWS6yk/7/7RPa24TaHVj9TKn9b9nC2DLzBDC3g1J vn7P9Sw/lUbsqOJtk7v8wy53YUZe9lTR67EuOeGPEFZnAbaG6tDhxL0KUa04xxU= X-Google-Smtp-Source: AGHT+IHGhL7UOJoJ/kl7lKOY8POXqisT6wepMEGy8eV2MwZHoopmjBN5qT0lMDUZs6Oa7UBaxHoQAw== X-Received: by 2002:a5d:9606:0:b0:7c7:ef39:97dc with SMTP id w6-20020a5d9606000000b007c7ef3997dcmr1397618iol.15.1709059866084; Tue, 27 Feb 2024 10:51:06 -0800 (PST) Received: from [100.64.0.1] ([170.85.6.200]) by smtp.gmail.com with ESMTPSA id x20-20020a056638249400b004747c4f663dsm1602054jat.0.2024.02.27.10.51.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 27 Feb 2024 10:51:05 -0800 (PST) Message-ID: Date: Tue, 27 Feb 2024 12:51:04 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/4] riscv: 64-bit NOMMU fixes and enhancements Content-Language: en-US To: Conor Dooley Cc: Palmer Dabbelt , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org References: <20240227003630.3634533-1-samuel.holland@sifive.com> <20240227-footage-porridge-949a43ee8ecb@wendy> From: Samuel Holland In-Reply-To: <20240227-footage-porridge-949a43ee8ecb@wendy> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Conor, On 2024-02-27 6:13 AM, Conor Dooley wrote: > On Mon, Feb 26, 2024 at 04:34:45PM -0800, Samuel Holland wrote: >> This series aims to improve support for NOMMU, specifically by making it >> easier to test NOMMU kernels in QEMU and on various widely-available >> hardware (errata permitting). After all, everything supports Svbare... >> >> After applying this series, a NOMMU kernel based on defconfig (changing >> only the three options below*) boots to userspace on QEMU when passed as >> -kernel. >> >> # CONFIG_RISCV_M_MODE is not set >> # CONFIG_MMU is not set >> CONFIG_NONPORTABLE=y >> >> *if you are using LLD, you must also disable BPF_SYSCALL and KALLSYMS, >> because LLD bails on out-of-range references to undefined weak symbols. > > That's not new to these patches though, right? IIRC that's an existing > issue. Yes, that's correct. I see that arch/riscv/configs/nommu_* have KALLSYMS disabled already; this may be the reason. Regards, Samuel