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 28688EE49A5 for ; Sat, 19 Aug 2023 10:44:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231674AbjHSKod (ORCPT ); Sat, 19 Aug 2023 06:44:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43032 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231724AbjHSKoG (ORCPT ); Sat, 19 Aug 2023 06:44:06 -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 4AF46271B for ; Sat, 19 Aug 2023 03:39:39 -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 D1A9760FC1 for ; Sat, 19 Aug 2023 10:39:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 3FC71C43391 for ; Sat, 19 Aug 2023 10:39:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1692441578; bh=VR8IVsYJQoLxmZrkFwwU1Ry/pOMdhcX63X1Qm3HtzaE=; h=From:To:Subject:Date:In-Reply-To:References:From; b=vLLoqTU5Om1SXSLvv0WxHLZ1VdI6FwqXKatKrQ3uzPeiSrVNUvRBUAqWApmPLYa5A llV2nyC4vTZh8igeaWxcT2m/pTKvZvcvuFY+KIj26ZfuTkqC0ECse+o3J0c4/8+m/f HrzAv0HvoQ6U5dpnzIIcvkcUlPT5yhYhRY5FCkjKb2CcLMjnbrZBvCgOTW+KMuRUwR 9HFvJbsdhy7XZ7Apn+Ah9Ut6RJEaEC59I9PgIV5TxKcytZh5058i/qFh4WOoQJ2wvb 24CA9+S3yhB1dye3E+FyHwTNQsDgexsrWqw4fJ0zi9qgYOjj6VB7sohcG3X/EavHe3 kfjz7NPQMfpsg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 29629C53BD0; Sat, 19 Aug 2023 10:39:38 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 217796] latest Zen Inception fixes breaks nested kvm virtualization on AMD Date: Sat, 19 Aug 2023 10:39:37 +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: blocking X-Bugzilla-Who: sonst+kernel@o-oberst.de 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: 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=3D217796 --- Comment #3 from sonst+kernel@o-oberst.de --- Sean, it does sound ridiculous, but it isn't. I tested the fix you suggested and = it works now with that patch applied. In the meantime i switched to a differnet machine to be able to test your fix and there I could also confirm the prob= lem there on a 6.4.11 kernel:=20 Test machine setup:=20 Gentoo, (vanilla) Kernel 6.4.11 Without the patch and spec_rstack_overflow in the default meaning pec_rstack_overflow=3Dsafe-ret also on this system my nested VMs do not sta= rt and get OOM-killed. I then applied the patch from your link, Sean, and it works now. Cheers, Oliver --=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.=