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 CCD0BC4167D for ; Tue, 10 May 2022 16:05:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347052AbiEJQJG (ORCPT ); Tue, 10 May 2022 12:09:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54966 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348510AbiEJQIb (ORCPT ); Tue, 10 May 2022 12:08:31 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 821FE9B181 for ; Tue, 10 May 2022 09:01:15 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id A08226172A for ; Tue, 10 May 2022 16:01:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 10BACC385C9 for ; Tue, 10 May 2022 16:01:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652198474; bh=gC2ZIxdyJv/FhQ1KzXbPDVwwmcd85AVBG1H86sXG1ho=; h=From:To:Subject:Date:In-Reply-To:References:From; b=m3VS1WheDkmJtsfGt/o3lh/IU7IPjO9k1um4SIklDVt2WF0HN9ewmce+hJiGcM3qf jzI/kPRn8f/YXrNYoB6H4tHuvDRQQ3tSFY8WXMqeBQ8nZIX/BORdv01gR3gETUzqAU T6AZ2cFohVPl9ocJfo0+xi8LUHPsIMZ1CX2TGf1Fzw+TCHaIuElpZdb+05WzHWrVUn X20jTKNpWn1erYyK1DaGWlzyxghq45FkZH2V5F8zAjw3VOOQZ4+t+U9spD+hYhkcVx SittFUHQl/sQePHs9YJ+er4rAKCe+4QKkWHyiwy3/LCJZM2nbfP8ze+mks9bEttb3h 3KeN8TlwOFP0g== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id EFDB8CC13B2; Tue, 10 May 2022 16:01:13 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 215964] nVMX: KVM(L0) does not perform a platform reboot when guest(L2) trigger a reboot event through IO-Port-0xCF9 Date: Tue, 10 May 2022 16:01:13 +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: seanjc@google.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: 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 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D215964 Sean Christopherson (seanjc@google.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |seanjc@google.com --- Comment #1 from Sean Christopherson (seanjc@google.com) --- Hmm, so KVM doesn't perform the RESET, that's handled by userspace. KVM's responsibility is purely to determine whether the OUT 0xCF9 should be forwa= rded to L1 or bounced out to userspace. Does the 0xCF9 I/O access get sent to userspace? If not, can you provide L= 1's VMCS configuration for L2? Specifically, the settings for USE_IO_BITMAPS a= nd the relevant bitmap bits if in use, or UNCOND_IO_EXITING if not using bitma= ps. If the I/O access does show up in userspace, then it's likely a userspace b= ug, e.g. userspace fails to clear nested state when emulating RESET. --=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.=