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 E996AC3DA60 for ; Tue, 16 Jul 2024 10:20:08 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTfHa-0002vi-TP; Tue, 16 Jul 2024 06:19:42 -0400 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 1sTfHZ-0002v8-6U for qemu-devel@nongnu.org; Tue, 16 Jul 2024 06:19:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTfHX-0006ZZ-Q2 for qemu-devel@nongnu.org; Tue, 16 Jul 2024 06:19:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721125179; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=k47+0r+3UMCaQNRblcynTbey68L/APZhu/L4CLrdht8=; b=hQqoo0Ph0LxtFA2pDG3UUs/u4Nebv0p2HazBR++8VbwpJ0Q833PzIrkf3haE4x4vRjupIo e6lNfI2tgnmsqo8BGWLJOKdaiWTJ1WLPIvoUJpHmYxe5n6BHtWmL5qO5an/+03GSTjjZPm gDBdyuybH9Trr9DOUsJGNRXT6vQxrwI= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-567-8OMFxdTXMK2Kp0Aiux0wkw-1; Tue, 16 Jul 2024 06:19:37 -0400 X-MC-Unique: 8OMFxdTXMK2Kp0Aiux0wkw-1 Received: by mail-wm1-f69.google.com with SMTP id 5b1f17b1804b1-4264dc624a5so34553525e9.1 for ; Tue, 16 Jul 2024 03:19:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721125176; x=1721729976; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=k47+0r+3UMCaQNRblcynTbey68L/APZhu/L4CLrdht8=; b=VFeKlZ3k7rm501/g5gmNtVuan/NcoLe55IDZxCm+ssz3NOt7eImho2BqoXhJcAPKe+ DhEeq+Pd92F9vEo+uhuQTfq2uL3KiwDWc5cbPDFTv+NAXivtkf6bCssf6EEXurvGi22g yIBnErr48p1DZIz+Lnq4E/Dgu9+plw/44oGstsKiqzTBf2xUqd+7dFXi5MjJVkmcEXIr zwVhtehzfW/d8/fTbcbCdPxdlm8jWOoTrom8r+7KlLryt1m1yDUdaxZF08n9ciBoECbq tNUVHEiTbUc71WQiano+5vGyP4bIT/Tnld1mEtLTI8xgHxwZWMfuQM56gt0R4KHCPm/4 5vNA== X-Gm-Message-State: AOJu0YxS802Z5HTlFMKMARmbFmNd6GqD/jNO9B4x1UkQcM0spV6XfkyX 3xDtyRVwQGaz7vscJkRSfEKTmI4+zKC+l9Z8DyAKu6I9hlJMuHh0glXbrp6VcLCCNOyMYPXExtH DQmpUgUgVs7SJBHLHSgL7y0q9hLdayOBvv8bpsUckf0POHYgKZMV1f1Ka20Zs9IyXSdGjT8l/H1 H9mOOGSfePj8HXv81UIKdkZMMc3wc= X-Received: by 2002:a05:600c:3c96:b0:426:629f:154e with SMTP id 5b1f17b1804b1-427ba6dc289mr11050955e9.30.1721125176681; Tue, 16 Jul 2024 03:19:36 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEcUx9U+tFzbTSrQt6yOPlxJW9U1TkmROAFTIse42JitfxEN+qyE3zP1JI5v8GjAf9m3Z6qcagF69fje1CoyAw= X-Received: by 2002:a05:600c:3c96:b0:426:629f:154e with SMTP id 5b1f17b1804b1-427ba6dc289mr11050835e9.30.1721125176401; Tue, 16 Jul 2024 03:19:36 -0700 (PDT) MIME-Version: 1.0 References: <20240711131424.181615-1-ppandit@redhat.com> <20240711131424.181615-2-ppandit@redhat.com> In-Reply-To: From: Prasad Pandit Date: Tue, 16 Jul 2024 15:49:19 +0530 Message-ID: Subject: Re: [PATCH 1/2] vhost-user: add a write-read lock To: Peter Xu Cc: qemu-devel@nongnu.org, Fabiano Rosas , Jason Wang , "Michael S . Tsirkin" , mcoqueli@redhat.com, Prasad Pandit Content-Type: text/plain; charset="UTF-8" Received-SPF: pass client-ip=170.10.129.124; envelope-from=ppandit@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 On Mon, 15 Jul 2024 at 18:57, Peter Xu wrote: > I think it shouldn't be a major deal in most cases, if the extended cycles > only cover a bunch of instructions. In special case we can still use > WITH_QEMU_LOCK_GUARD, but I'd start with the simple first and only switch > if necessary. * Okay, will send patch v2. Thank you. --- - Prasad