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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3913BEB64DD for ; Tue, 27 Jun 2023 08:29:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231976AbjF0I3W (ORCPT ); Tue, 27 Jun 2023 04:29:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36288 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231970AbjF0I3C (ORCPT ); Tue, 27 Jun 2023 04:29:02 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19EF22722 for ; Tue, 27 Jun 2023 01:28:21 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5932760F6B for ; Tue, 27 Jun 2023 08:28:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id BB341C43397 for ; Tue, 27 Jun 2023 08:28:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1687854499; bh=4l4dhrfleYNqjZ+0JsA17fatdN91HRNv6542a8/W8mE=; h=From:To:Subject:Date:In-Reply-To:References:From; b=XOiOgSQsj+0HYWF7XfHPV+TLvA0GKBFApAGw+drDv24UNEDEcyUGBrMJvZCXlMQQ3 PzEsUUWdIaTJ6w6XnWq1UJjY2QkMJUnAKgODy5f7vCW4nm4iU01waboodbQHxk3HTz 9X7k0BfzLW36JtbUbKN8FMmu1Ox7r15RtvdfoOJu2U9oBBRIgx9YRiFOk3QAjT1Hev PVOgdU8DwNU+JCKhOVISrhxnKtL938adBHOkF6J+QsRaGwf9O091778cOrspVhjn8A EBfNmDLVS8qR2ItxteGpjH/eI51SrZ66kc+oyZdZrZHp0OJVuq4KmeQ5AW1I6qUh14 iLBYkG6s5w6CQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id A2A9DC53BD5; Tue, 27 Jun 2023 08:28:19 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 217307] windows guest entering boot loop when nested virtualization enabled and hyperv installed Date: Tue, 27 Jun 2023 08:28:19 +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: P1 X-Bugzilla-Assigned-To: virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D217307 --- Comment #7 from vkuznets@redhat.com --- Assuming this is not a KVM/QEMU regression, I'd suggest to explore two opti= ons: 1) Change "-cpu host" to a named CPU model. I don't see "alderlake" CPU mod= els in QEMU so I'd start with something like "Skylake-Client-v4". Remove all ot= her CPU options you have, like "rtm=3Doff,mpx=3Doff,host-cache-info=3Don,l3-cac= he=3Doff". Try to find the exact CPU option which breaks things. There were similar but reversed (works with '-cpu host', doesn't work with a named model) issues in the past, e.g. https://lore.kernel.org/qemu-devel/20220308113445.859669-21-pbonzini@redhat= .com/ 2) Try disabling certain Hyper-V enlightenments, start with "hv-evmcs". In theory, things should work (slowly, but still) without any Hyper-V enlightenments. --=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.=