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[2003:cb:c743:de00:7030:120f:d1c9:4c3c]) by smtp.gmail.com with ESMTPSA id j15-20020a05600c190f00b004162b7af645sm2464176wmq.10.2024.04.04.12.15.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 04 Apr 2024 12:15:41 -0700 (PDT) Message-ID: <604863a6-0387-4f29-9c4e-5ef86a8ca904@redhat.com> Date: Thu, 4 Apr 2024 21:15:38 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 08/29] mm: Define VM_SHADOW_STACK for RISC-V To: Mark Brown Cc: Deepak Gupta , paul.walmsley@sifive.com, rick.p.edgecombe@intel.com, Szabolcs.Nagy@arm.com, kito.cheng@sifive.com, keescook@chromium.org, ajones@ventanamicro.com, conor.dooley@microchip.com, cleger@rivosinc.com, atishp@atishpatra.org, alex@ghiti.fr, bjorn@rivosinc.com, alexghiti@rivosinc.com, samuel.holland@sifive.com, conor@kernel.org, linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org, corbet@lwn.net, palmer@dabbelt.com, aou@eecs.berkeley.edu, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, oleg@redhat.com, akpm@linux-foundation.org, arnd@arndb.de, ebiederm@xmission.com, Liam.Howlett@oracle.com, vbabka@suse.cz, lstoakes@gmail.com, shuah@kernel.org, brauner@kernel.org, andy.chiu@sifive.com, jerry.shih@sifive.com, hankuan.chen@sifive.com, greentime.hu@sifive.com, evan@rivosinc.com, xiao.w.wang@intel.com, charlie@rivosinc.com, apatel@ventanamicro.com, mchitale@ventanamicro.com, dbarboza@ventanamicro.com, sameo@rivosinc.com, shikemeng@huaweicloud.com, willy@infradead.org, vincent.chen@sifive.com, guoren@kernel.org, samitolvanen@google.com, songshuaishuai@tinylab.org, gerg@kernel.org, heiko@sntech.de, bhe@redhat.com, jeeheng.sia@starfivetech.com, cyy@cyyself.name, maskray@google.com, ancientmodern4@gmail.com, mathis.salmen@matsal.de, cuiyunhui@bytedance.com, bgray@linux.ibm.com, mpe@ellerman.id.au, baruch@tkos.co.il, alx@kernel.org, catalin.marinas@arm.com, revest@chromium.org, josh@joshtriplett.org, shr@devkernel.io, deller@gmx.de, omosnace@redhat.com, ojeda@kernel.org, jhubbard@nvidia.com References: <20240403234054.2020347-1-debug@rivosinc.com> <20240403234054.2020347-9-debug@rivosinc.com> <8fb37319-288c-4f77-9cd7-92f17bb567ee@redhat.com> From: David Hildenbrand Content-Language: en-US Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 04.04.24 21:04, Mark Brown wrote: > On Thu, Apr 04, 2024 at 08:58:06PM +0200, David Hildenbrand wrote: > >> or even introduce some ARCH_HAS_SHADOW_STACK so we can remove these >> arch-specific thingies here. > > It would be convenient if you could pull the ARCH_HAS_USER_SHADOW_STACK > patch out of my clone3 series to do that: > > https://lore.kernel.org/all/20240203-clone3-shadow-stack-v5-3-322c69598e4b@kernel.org/ Crazy, I completely forgot about that one. Yes! -- Cheers, David / dhildenb