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Thu, 27 Nov 2025 01:22:54 -0800 (PST) Date: Thu, 27 Nov 2025 10:22:28 +0100 In-Reply-To: <20251127092226.1439196-8-ardb+git@google.com> Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251127092226.1439196-8-ardb+git@google.com> X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=875; i=ardb@kernel.org; h=from:subject; bh=LXaoefJgP6t3V697yrG8QR6lNpOK4nbDq1CishfTlx0=; b=owGbwMvMwCVmkMcZplerG8N4Wi2JIVNDItRQuip5xYWJK0Jad7HG9b2/1b1Fii33VdirLhdnB tc7m+w6SlkYxLgYZMUUWQRm/3238/REqVrnWbIwc1iZQIYwcHEKwEQ4mRn+aa9dL7tAoXn35YWy QSLC104ZXX9x+MnM33/3+icp7VJvc2dk6Fganr6zP8NI1tT1wnbPW+tMZMK2Xolc17SUM+bHreX qDAA= X-Mailer: git-send-email 2.52.0.107.ga0afd4fd5b-goog Message-ID: <20251127092226.1439196-9-ardb+git@google.com> Subject: [RFC/RFT PATCH 1/6] hexagon: Wire up cmpxchg64_local() to generic implementation From: Ard Biesheuvel To: linux-hardening@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Ard Biesheuvel , Kees Cook , Ryan Roberts , Will Deacon , Arnd Bergmann , Jeremy Linton , Catalin Marinas , Mark Rutland , "Jason A. Donenfeld" Content-Type: text/plain; charset="UTF-8" From: Ard Biesheuvel Provide cmpxchg64_local() for hexagon so we can start using it in generic code. Signed-off-by: Ard Biesheuvel --- arch/hexagon/include/asm/cmpxchg.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/hexagon/include/asm/cmpxchg.h b/arch/hexagon/include/asm/cmpxchg.h index 9c58fb81f7fd..05e426475d2a 100644 --- a/arch/hexagon/include/asm/cmpxchg.h +++ b/arch/hexagon/include/asm/cmpxchg.h @@ -8,6 +8,8 @@ #ifndef _ASM_CMPXCHG_H #define _ASM_CMPXCHG_H +#include + /* * __arch_xchg - atomically exchange a register and a memory location * @x: value to swap @@ -72,4 +74,6 @@ __arch_xchg(unsigned long x, volatile void *ptr, int size) __oldval; \ }) +#define arch_cmpxchg64_local __generic_cmpxchg64_local + #endif /* _ASM_CMPXCHG_H */ -- 2.52.0.107.ga0afd4fd5b-goog