From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D1798D60CF8 for ; Mon, 18 Nov 2024 23:34:07 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tDBFK-0001KP-LP; Mon, 18 Nov 2024 18:33:30 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tDBFH-0001KE-FF for qemu-devel@nongnu.org; Mon, 18 Nov 2024 18:33:27 -0500 Received: from mail-pl1-x636.google.com ([2607:f8b0:4864:20::636]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tDBFE-00081J-GG for qemu-devel@nongnu.org; Mon, 18 Nov 2024 18:33:26 -0500 Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-2124a86f4cbso2464235ad.3 for ; Mon, 18 Nov 2024 15:33:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1731972800; x=1732577600; darn=nongnu.org; h=content-transfer-encoding:subject:to:from:content-language :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=eS7HjFWZNhhpKT97e3Jejn9fQk4qYBkmw7CwLMajyZU=; b=WGQuIllldfi/Z5zH0ZRDtemF48KDlupuhcSittx4P4c8eA7L4a4KKmVexeU3xPtQFE N9q67ix1ymSgz+z3tPHUmG9JlQJ47SQncJKXKWBh6KxFMQt0xVpRot04TS6vLqiNVwQL UJACDt9WEJ6UBTWT+IrQlrdK+gFAM2gFHOsEct0nTrSDzUJwAg/PbPCY4o70yMgj+l7x fpoa+YEe7KR8ab1U1r2eFdmBl1m1vR482KPHolMpOTtc7xTQM6XsflYer/T4gU9vuzUr iYOnVkIbbiAPc99jctMhCYkY9O9asIUkxtu+LkcYzQC5bcv0oaM1/rWg3F2TNqhso990 TsnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731972800; x=1732577600; h=content-transfer-encoding:subject:to:from:content-language :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=eS7HjFWZNhhpKT97e3Jejn9fQk4qYBkmw7CwLMajyZU=; b=s4XNuvJ0S2KlJDpCZyqphPEL4cby9T4SX1zTzD9B98SWC1d+H/V87NpoCUaMn9H7id Xhzo981zhcCJt9pO9qnUee3hgw8549JgQ1sksNcIr4WuGE4pCZR0Cag0tXFGSIY60pTO 9S7gPwsRpAuVJ9ABns2CpvO1LbMiWss2eHIYsu/38ZzHaajAVqhrxzLyyGaMhdZZVHrG 9Dwlu8uUS1b5OGUw3CrNeOtEWSc/E178xlzO3AbY357sY/hnlGyLHiKPVE0Gc1jdoReN +czy9wh+ovZCz3NgUEQ2JW60bJB/NmveOUIrkOuPpL3NuWyYYGY7P0m2aBPWMq+ob/hl rPpw== X-Gm-Message-State: AOJu0Yy8/4WymnBRYawD047GtlyJhALOguWDtfy/oJPJZykUNj3I05Eq u+NnQO+vP5xxB3oMy8ing1EdhM+SMKfAsHXWtDhMGTtHIF/8Nfl0waM0bO+jBJc2CZZ5FbLZ2Cp zcz6jeg== X-Google-Smtp-Source: AGHT+IGPuSlO/XLOB7zbPK+9uhvJiM2NKbmXxVla/J7dPzyy6ib1F56PB+wo9/aRVJQin7yS05DA9Q== X-Received: by 2002:a17:903:41d2:b0:20b:cae5:dec4 with SMTP id d9443c01a7336-211d0d7ddd6mr215729085ad.24.1731972799746; Mon, 18 Nov 2024 15:33:19 -0800 (PST) Received: from [192.168.1.67] (216-180-64-156.dyn.novuscom.net. [216.180.64.156]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21253619d4bsm743745ad.173.2024.11.18.15.33.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 18 Nov 2024 15:33:19 -0800 (PST) Message-ID: <51442716-467b-46c2-b2f7-8ffdeeca320e@linaro.org> Date: Mon, 18 Nov 2024 15:33:18 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US From: Pierrick Bouvier To: "qemu-devel@nongnu.org" , Peter Maydell , =?UTF-8?Q?Alex_Benn=C3=A9e?= , Richard Henderson Subject: Status of some Arm features Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::636; envelope-from=pierrick.bouvier@linaro.org; helo=mail-pl1-x636.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hello, I'm currently reviewing the QEMU Arm documentation, and I have a question about the status of following features: 8.0: - FEAT_DoubleLock, Double Lock 8.2: - FEAT_ASMv8p2, Armv8.2 changes to the A64 ISA (bfc and rev64 instructions) 8.4: - FEAT_CNTSC, Generic Counter Scaling (hw/timer/sse-counter.c) From what I see, it seems like they are already implemented in QEMU. Is that correct? Thanks, Pierrick