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Mon, 15 Jul 2024 21:38:21 -0700 (PDT) Received: from localhost ([2804:14d:7e39:8470:2914:689d:ed52:527]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-70b7ec7ff8csm5250315b3a.135.2024.07.15.21.38.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jul 2024 21:38:21 -0700 (PDT) From: Thiago Jung Bauermann To: broonie@kernel.org Cc: Szabolcs.Nagy@arm.com,bp@alien8.de,brauner@kernel.org,bristot@redhat.com,bsegall@google.com,catalin.marinas@arm.com,dave.hansen@linux.intel.com,david@redhat.com,debug@rivosinc.com,dietmar.eggemann@arm.com,fweimer@redhat.com,hjl.tools@gmail.com,hpa@zytor.com,jannh@google.com,juri.lelli@redhat.com,kees@kernel.org,linux-api@vger.kernel.org,linux-kernel@vger.kernel.org,linux-kselftest@vger.kernel.org,mgorman@suse.de,mingo@redhat.com,peterz@infradead.org,rick.p.edgecombe@intel.com,rostedt@goodmis.org,shuah@kernel.org,tglx@linutronix.de,vincent.guittot@linaro.org,vschneid@redhat.com,will@kernel.org,x86@kernel.org Subject: Re: [PATCH RFT v6 3/9] mm: Introduce ARCH_HAS_USER_SHADOW_STACK In-Reply-To: <20240623-clone3-shadow-stack-v6-3-9ee7783b1fb9@kernel.org> Date: Tue, 16 Jul 2024 01:38:18 -0300 Message-ID: <87ttgqt0hx.fsf@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Hello, > diff --git a/mm/Kconfig b/mm/Kconfig > index b4cb45255a54..45416916dec1 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -1249,6 +1249,12 @@ config IOMMU_MM_DATA > config EXECMEM > bool > > +config ARCH_HAS_USER_SHADOW_STACK > + bool > + help > + The architecture has hardware support for userspace shadow call > + stacks (eg, x87 CET, arm64 GCS or RISC-V Zicfiss). s/x87/x86/ ? -- Thiago