From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ABF46143C4B for ; Tue, 6 Aug 2024 11:02:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722942132; cv=none; b=SSMUJhRBAiuSfi6nGakKTGsu6uCjL+YQd0arsdTw1Qw/i0V38HcOK1+lG9aItJU2Mou2QaV4CrbwXnA/SajLXqEGwMBYPwEhYf+mrfVkWbFAreWsEakELpF9vOGX7nVDo2U64bW+4i96gRFPQd2dpWXLg59aL5Moi2AIDgMFgaY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722942132; c=relaxed/simple; bh=oqiT23uDpKUeijSSFEbDth2Jzc3Zi+OLqvslXYLWlXw=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=u1YeOilI1z07zTDsgNAfyUmi+J6imNx/kBV0bQBSlmQfFcIjxcFVcMi2DsPeUjk+O7KP5RNDgE8zH/fUwwQREhu0/4lxrYujlxLjL+ldq8gb+9RcixucP40E+KnWL8JjhnVPUfzSOKb9aPEFkHuVus+Ii9qs4XQ3THtwn8cwU4M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PkQ5Fh3v; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PkQ5Fh3v" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2599DC4AF10 for ; Tue, 6 Aug 2024 11:02:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722942132; bh=oqiT23uDpKUeijSSFEbDth2Jzc3Zi+OLqvslXYLWlXw=; h=From:To:Subject:Date:In-Reply-To:References:From; b=PkQ5Fh3vrlKIogsB2VCdZ5Z+ZQFNdd2bP9iUrmtGO8Cwsp5gcVSH5NQl1rfsj/oz5 huY+SVRoz3KDDIcG+IzCPFhOBHRG9rcdKkpLIBkzAad5g8Ac/r4gysgD4IFV6NgiIN SXcYhmFT5nxBBGmzxX9GQAREtPxKh2hRhB9v/z7Ha94SJcLshljP7KbBqYXghToJOx lsUydpuaISAPmghs1dxg2rD7VqcYnp2GZq3LR9/KPKXiJXa0DjH7xe+nHTWgA0X6vq VoaLZgaB79yUOcrr7ej3ZdM8rz9uxJP8LwvS5h+tXC31mQQpas9DVxJeKW4wz1WaCr pOLe7WFONa/XQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 1D313C53BBF; Tue, 6 Aug 2024 11:02:12 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 218267] [Sapphire Rapids][Upstream]Boot up multiple Windows VMs hang Date: Tue, 06 Aug 2024 11:02:11 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Product: Virtualization X-Bugzilla-Component: kvm X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: high X-Bugzilla-Who: vkuznets@redhat.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D218267 vkuznets@redhat.com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |vkuznets@redhat.com --- Comment #5 from vkuznets@redhat.com --- (In reply to Chao Gao from comment #3) > Note that, APICv outperforms Hyper-V's synthetic MSRs; regardless of this > bug, it is recommended to remove "hv-vapic" if KVM enables APICv. 'hv-vapic' is a prerequisite for some other Hyper-V features, e.g. Enlighte= ned VMCS so disabling it may not be desired. Also, there's 'hv-apicv' (AKA 'hv-avic') feature which prevents AutoEOI advertisement (can't work with APICv and this KVM inhibits it with APICV_INHIBIT_REASON_HYPERV). AFAIR, newer Windows versions don't use AutoE= OI either way but Win8/Win7 may. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=