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Sat, 25 Oct 2025 09:33:29 -0700 (PDT) Received: from localhost ([12.22.141.131]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-87fc48f64aasm16321246d6.27.2025.10.25.09.33.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 25 Oct 2025 09:33:28 -0700 (PDT) From: "Yury Norov (NVIDIA)" To: Linus Walleij , Lee Jones , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Marco Elver , Dmitry Vyukov , kasan-dev@googlegroups.com Cc: "Yury Norov (NVIDIA)" Subject: [PATCH 16/21] kcsan: don't use GENMASK() Date: Sat, 25 Oct 2025 12:32:58 -0400 Message-ID: <20251025163305.306787-9-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251025162858.305236-1-yury.norov@gmail.com> References: <20251025162858.305236-1-yury.norov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251025_093331_006941_0B088EBC X-CRM114-Status: GOOD ( 10.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org GENMASK(high, low) notation is confusing. Use BITS(low, high) and FIRST_BITS() where appropriate. Signed-off-by: Yury Norov (NVIDIA) --- kernel/kcsan/encoding.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/kcsan/encoding.h b/kernel/kcsan/encoding.h index 170a2bb22f53..3a4cb7b354e3 100644 --- a/kernel/kcsan/encoding.h +++ b/kernel/kcsan/encoding.h @@ -44,8 +44,8 @@ /* Bitmasks for the encoded watchpoint access information. */ #define WATCHPOINT_WRITE_MASK BIT(BITS_PER_LONG-1) -#define WATCHPOINT_SIZE_MASK GENMASK(BITS_PER_LONG-2, WATCHPOINT_ADDR_BITS) -#define WATCHPOINT_ADDR_MASK GENMASK(WATCHPOINT_ADDR_BITS-1, 0) +#define WATCHPOINT_ADDR_MASK FIRST_BITS(WATCHPOINT_ADDR_BITS) +#define WATCHPOINT_SIZE_MASK BITS(WATCHPOINT_ADDR_BITS, BITS_PER_LONG-2) static_assert(WATCHPOINT_ADDR_MASK == (1UL << WATCHPOINT_ADDR_BITS) - 1); static_assert((WATCHPOINT_WRITE_MASK ^ WATCHPOINT_SIZE_MASK ^ WATCHPOINT_ADDR_MASK) == ~0UL); -- 2.43.0