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[107.220.129.194]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-66e4ecf1d87sm8521827d50.12.2026.09.01.08.51.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2026 08:51:21 -0700 (PDT) From: Matt Turner To: linux-alpha@vger.kernel.org, richard.henderson@linaro.org Cc: linmag7@gmail.com, linux-kernel@vger.kernel.org Subject: [PATCH 12/24] alpha: add HAVE_ARCH_THREAD_STRUCT_WHITELIST support Date: Tue, 1 Sep 2026 11:50:25 -0400 Message-ID: <4524c04f1bc23f244650c7054ee449b6af054b86.1788277742.git.mattst88@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Alpha's thread_struct is empty (all per-thread state lives in thread_info), so the whitelist is trivially empty. This is more explicit than the generic fallback, which computes the full thread_struct size as copyable. Assisted-by: Claude:claude-opus-4-6 Signed-off-by: Matt Turner --- arch/alpha/Kconfig | 1 + arch/alpha/include/asm/processor.h | 7 +++++++ 2 files changed, 8 insertions(+) diff --git ./arch/alpha/Kconfig ./arch/alpha/Kconfig index 2ae514bea4cf..e6fa8da0abff 100644 --- ./arch/alpha/Kconfig +++ ./arch/alpha/Kconfig @@ -42,6 +42,7 @@ config ALPHA select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_SECCOMP select HAVE_ARCH_SECCOMP_FILTER + select HAVE_ARCH_THREAD_STRUCT_WHITELIST select HAVE_ARCH_TRACEHOOK select HAVE_MOD_ARCH_SPECIFIC select LOCK_MM_AND_FIND_VMA diff --git ./arch/alpha/include/asm/processor.h ./arch/alpha/include/asm/processor.h index 5dce5518a211..c461a26d47b3 100644 --- ./arch/alpha/include/asm/processor.h +++ ./arch/alpha/include/asm/processor.h @@ -26,6 +26,13 @@ struct thread_struct { }; #define INIT_THREAD { } +static inline void arch_thread_struct_whitelist(unsigned long *offset, + unsigned long *size) +{ + *offset = 0; + *size = 0; +} + /* Do necessary setup to start up a newly executed thread. */ struct pt_regs; extern void start_thread(struct pt_regs *, unsigned long, unsigned long); -- 2.54.0