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[107.220.129.194]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-66e4eb3df27sm8636777d50.2.2026.09.01.08.51.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2026 08:51:02 -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 08/24] alpha: select ARCH_HAS_FAST_MULTIPLIER Date: Tue, 1 Sep 2026 11:50:21 -0400 Message-ID: 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 All Alpha CPUs have hardware integer multiply (MULL/MULQ). EV4 and EV5 implement it in microcode; EV56 and later have fast single-cycle multiply. Since no EV4 system is likely to run a modern kernel, select this unconditionally to enable multiply-based fast paths in hweight and string routines. Assisted-by: Claude:claude-opus-4-6 Signed-off-by: Matt Turner --- arch/alpha/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git ./arch/alpha/Kconfig ./arch/alpha/Kconfig index 0655e36608cc..9e8e571949c4 100644 --- ./arch/alpha/Kconfig +++ ./arch/alpha/Kconfig @@ -5,6 +5,7 @@ config ALPHA select ARCH_32BIT_USTAT_F_TINODE select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DMA_OPS if PCI + select ARCH_HAS_FAST_MULTIPLIER select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_UBSAN select ARCH_MIGHT_HAVE_PC_PARPORT -- 2.54.0