From patchwork Fri Apr 12 04:11:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Charlie Jenkins X-Patchwork-Id: 13626777 Received: from mail-pf1-f171.google.com (mail-pf1-f171.google.com [209.85.210.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4B53945973 for ; Fri, 12 Apr 2024 04:11:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712895112; cv=none; b=Tn5QKWmD4uucUjEnBFxFLS6lbrrdgd818TAuth6oBK7kC5BxZNZmfzny8x4VrOdRGbNYmyDK0xZtguh+glBVBEVKYY6TW5Djzl+9jIV42+OIHZP5pdan0r8L3coktWilq1GaCR+KTetcZxfJ5K7/Xo6Qb2CgXt5Ew9pnI5GnvjA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712895112; c=relaxed/simple; bh=AjSOqPvk8pDaNRWNo6bJjXE2EKHaQE5Z9yM7TIyqWv4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=j6J15RCGwRPcbhfDJGQ1RoPdQ5uuzjTYx1W7V9W7PGqW71lIgB/RpzDRh/IhJx3LnQ8acnHvMviojtHaDOWTqzjNAdstv5tawrwiqvZT14k6lFXdTnutqNK1IiMfQQu254QwLO6Cg4dYDH5VJ7z0PihWdK648tQlNa6ezEybGWw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com; spf=pass smtp.mailfrom=rivosinc.com; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b=Do8dwcqa; arc=none smtp.client-ip=209.85.210.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b="Do8dwcqa" Received: by mail-pf1-f171.google.com with SMTP id d2e1a72fcca58-6ecee1f325bso471993b3a.2 for ; Thu, 11 Apr 2024 21:11:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1712895110; x=1713499910; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=ZMPIuwt6cMnmpNq4lu1wiuX0ZLQRNI3Tbplv0ws9fgg=; b=Do8dwcqa5vHeVNl4UCZAQqN3S71ZxHEfFnC3gAiMNk68N9TQ2fOVi1p5UmgvNjpjli JwpE2tmIuEpS8GvEsAHBgaRgyP6Ga2tFBWJVLGsgSxKhdL9rpvBU2oJfWr8GVYJBrlV3 ByCRuUg3q9HurySVRbXt2qTl3CiEP0WDRe3Px+rPhK2ZX1xkKFtr6+5U5PNUB3MdBUcS frRQFCqa3EoMwZduML3l5FrTKJlZytQ704GqCGZXXOjMz7UUnA+I9tJuy5GlveJX7iwe PUpUOd6zmHi4GtOzBw1vUhXpM4CEP3dnmTNKLCrV5aAoZBVq+kT+lAdTFzmUvljFlnj1 hRug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712895110; x=1713499910; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ZMPIuwt6cMnmpNq4lu1wiuX0ZLQRNI3Tbplv0ws9fgg=; b=QNSFa7xtnHVSGsjeaO51rGc1S5hCYAk2SCaK6AfVfRAjyuR8/urJq2eYCnoQxTk2I2 uPo0zf2ga+lFm4WVRQUj6CaSugqayN7tAWxL7e7OYiq7Ctoa2QhWQumhVsPPQvJpPIU5 kpHtYH6D4dx23TNHblYhzdzWiLM53Zyqko+LJmJjoEfg0WwwtyEAqA6MD+7AWur3NUD5 lHBVJl5O590NWnD+7hMfyaz0J4SWo6LIc9KHw/o1SGN86xEsF5dQXdf4vUASUCdPEZCA hz6HzaQlPhw8+vblgjhDXRgrqzH8tHqm9+WNih1stR4+fk0AcLjfd9/x0HTkNza7lC6K udAA== X-Forwarded-Encrypted: i=1; AJvYcCXxbP7kJ5dTZ3bqHj85nrUV+y7AlxUrT825YHtHu9X2s3AxbS6x0cRmj5GEA8p/4FlNBLZ5X7EoZ04Ng7V0qTIx0OdeULQPF7stzc3G5WPe X-Gm-Message-State: AOJu0YxxvtIaaKz0rWzYY/uLaEBp62kb86AibyaFImkZLhugsYv++lOB x5Va/RKGzbn3oCl9ltAg1R0YTBoSPrJ8NlBzDb7B6F1QHf1h1dsKJm6JVgYfaaA= X-Google-Smtp-Source: AGHT+IFCzy27N8mqtHUrUbUr0RUPxfjDtDbiINOHTo2v+uHwsCX7URxkFsS+GECfOE3fQY7tSLC35A== X-Received: by 2002:a05:6a00:3d0f:b0:6ea:b073:c10c with SMTP id lo15-20020a056a003d0f00b006eab073c10cmr1638560pfb.6.1712895109632; Thu, 11 Apr 2024 21:11:49 -0700 (PDT) Received: from charlie.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id ka13-20020a056a00938d00b006e57247f4e5sm1949712pfb.8.2024.04.11.21.11.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Apr 2024 21:11:48 -0700 (PDT) From: Charlie Jenkins Date: Thu, 11 Apr 2024 21:11:15 -0700 Subject: [PATCH 09/19] riscv: uaccess: Add alternative for xtheadvector uaccess Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240411-dev-charlie-support_thead_vector_6_9-v1-9-4af9815ec746@rivosinc.com> References: <20240411-dev-charlie-support_thead_vector_6_9-v1-0-4af9815ec746@rivosinc.com> In-Reply-To: <20240411-dev-charlie-support_thead_vector_6_9-v1-0-4af9815ec746@rivosinc.com> To: Conor Dooley , Rob Herring , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Guo Ren , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Conor Dooley , Evan Green , =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= , Jonathan Corbet , Shuah Khan Cc: linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Palmer Dabbelt , linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Charlie Jenkins X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1712895091; l=855; i=charlie@rivosinc.com; s=20231120; h=from:subject:message-id; bh=AjSOqPvk8pDaNRWNo6bJjXE2EKHaQE5Z9yM7TIyqWv4=; b=rLdA0uDN/4SuDsKaNkE1B/5EQ3+8RUn38NFVGd7zgF1hdVuMZ9rnFvU8oAtWxXhpoFvN3XcS2 AwLpS2uv0ZdD7oPmFrJym2AWAe7fYoEjhePpIuQeP49tGq9DoLHJSQU X-Developer-Key: i=charlie@rivosinc.com; a=ed25519; pk=t4RSWpMV1q5lf/NWIeR9z58bcje60/dbtxxmoSfBEcs= At this time, use the fallback uaccess routines rather than customizing the vectorized uaccess routines to be compatible with xtheadvector. Signed-off-by: Charlie Jenkins --- arch/riscv/lib/uaccess.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/lib/uaccess.S b/arch/riscv/lib/uaccess.S index bc22c078aba8..74bd75b673d7 100644 --- a/arch/riscv/lib/uaccess.S +++ b/arch/riscv/lib/uaccess.S @@ -15,6 +15,7 @@ SYM_FUNC_START(__asm_copy_to_user) #ifdef CONFIG_RISCV_ISA_V ALTERNATIVE("j fallback_scalar_usercopy", "nop", 0, RISCV_ISA_EXT_v, CONFIG_RISCV_ISA_V) + ALTERNATIVE("nop", "j fallback_scalar_usercopy", 0, RISCV_ISA_VENDOR_EXT_XTHEADVECTOR, CONFIG_RISCV_ISA_V) REG_L t0, riscv_v_usercopy_threshold bltu a2, t0, fallback_scalar_usercopy tail enter_vector_usercopy