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.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 32C19C27C43 for ; Thu, 30 May 2024 15:48:24 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.732807.1138822 (Exim 4.92) (envelope-from ) id 1sCi0c-0003LD-Gz; Thu, 30 May 2024 15:48:06 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 732807.1138822; Thu, 30 May 2024 15:48:06 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sCi0c-0003L6-DG; Thu, 30 May 2024 15:48:06 +0000 Received: by outflank-mailman (input) for mailman id 732807; Thu, 30 May 2024 15:48:05 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sCi0b-0003L0-1J for xen-devel@lists.xenproject.org; Thu, 30 May 2024 15:48:05 +0000 Received: from mail-qv1-xf2f.google.com (mail-qv1-xf2f.google.com [2607:f8b0:4864:20::f2f]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id feaa4aed-1e9b-11ef-b4bb-af5377834399; Thu, 30 May 2024 17:48:02 +0200 (CEST) Received: by mail-qv1-xf2f.google.com with SMTP id 6a1803df08f44-6ae0adfba9cso5624466d6.2 for ; Thu, 30 May 2024 08:48:02 -0700 (PDT) Received: from localhost ([213.195.114.223]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6ae3747dabfsm1590926d6.80.2024.05.30.08.47.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 May 2024 08:48:00 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: feaa4aed-1e9b-11ef-b4bb-af5377834399 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=citrix.com; s=google; t=1717084081; x=1717688881; darn=lists.xenproject.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=oxqf3xs1970Nf5zEjfxi/reh434J2MVMUjSk7tO9XVk=; b=grlr1wTWe6rXInwLhhL9i7Q0zAafTYM5pvnYWJf+nglTOMtGQm3i0SAGwmERpyyDqD 23wNBCIsmPIEcIwXbDl9wnbtKfccvK0UApKV9zzgxp5TaOaCEunFMTZ0Qw3AwFZTWCQM rN4IVMzPplfqTK231Th/O9fhjVaBiZTKSOgdg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1717084081; x=1717688881; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=oxqf3xs1970Nf5zEjfxi/reh434J2MVMUjSk7tO9XVk=; b=pvn3seU9MqS91t/rT1D7pnZmQAk1AIGrNQ2zNIjPfh+nyg9LKDn+ZSOThHjhUgLfew j5lASdJRG8d0d2siSfKw7fcD5/aoYDpDg/8bE0/J+1zMpkChOKnO0EdC7PybrJzZgrU7 gZedbkMt+7xVoCHxdWvZcCJN3UnYg2k2trhrEUE6vnGNTOlCYirjBWY8zp4NCr1/hmtM B3sdBYqcr/IsIdRWBXWoUxuYi3M64jOc9l7OyacLUhUyKGN6TXPxudXQa1kEZZAiXzAL E8wCvkr3qFF4rMkNc/ChspQa1pjfiq5Ddfl2eBTwCCQcQjgPXuj644k/GmgYBjfyB02W qPyw== X-Forwarded-Encrypted: i=1; AJvYcCWx0YeOI8+HjMWmTEpc8e7P0tF2bLN36ZyTc42ZDdt0IzaqjZYbehRLYyeD59HfKFAGz3hxIkPJUVPHXMEq0lUtENCYPjerGedMo1K1bx4= X-Gm-Message-State: AOJu0YyIaH7VQFwqf6Hm6plVZhGUEEWNq5eSOe3+OzYk9iDUxh7x3cYO 9/hfTzDPN3+KsJZOrkWPA66RTnIwFQdHo3YMx7eZwUvzi7GHZr/VABbGsqTSwRw= X-Google-Smtp-Source: AGHT+IHE9QQL0YCf+/J5BYCzknuSYnGYXbQ6CM3je54Kz7kkHtTY+j+Jg+sXGzp1GTOoWYKJVt35Eg== X-Received: by 2002:a05:6214:3c8a:b0:6ae:20:3723 with SMTP id 6a1803df08f44-6ae0cafc262mr30183836d6.5.1717084080634; Thu, 30 May 2024 08:48:00 -0700 (PDT) Date: Thu, 30 May 2024 17:47:58 +0200 From: Roger Pau =?utf-8?B?TW9ubsOp?= To: Alejandro Vallejo Cc: Andrew Cooper , Xen-devel , Jan Beulich Subject: Re: [PATCH v3 2/6] xen/x86: Add initial x2APIC ID to the per-vLAPIC save area Message-ID: References: <9912423b866ed696c375e0a51954d363c3706470.1716976271.git.alejandro.vallejo@cloud.com> <0d3101bc-624e-43b0-95e7-cc89de3bb259@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On Thu, May 30, 2024 at 02:48:10PM +0100, Alejandro Vallejo wrote: > I'll try to do that soon-ish. I suspect the pain points are going to be > making it work nicely as well on 1vCPU systems with no APIC (are > those expected to work?). We do not allow creation of PVH/HVM domains without an emulated local APIC, and I don't think we ever want to allow doing so (see emulation_flags_ok()). Thanks, Roger.