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 1B62A15E81 for ; Sat, 31 Aug 2024 21:51:50 +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=1725141111; cv=none; b=lWYeacufdwWOhMGgLRO7AEAYR2dMSlCOvgMrpp/VJ1PuaH57jux9l7LezubWrFM/HxR4sFCrO3OkonHNLdrgQIbuCG9R48hACSJB2SeVdMYKQtkZJQixqCSU6UNMDjRnDT6BQQ+oyjFFeatopWp4XpGBlxDIQ3mR7dr0KuM0W9Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725141111; c=relaxed/simple; bh=9+l/rVvQY/OfidVskTpiafliG/52ebU4YD96yZyGCYM=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=fmR+b5vIunJyiarlGFVLTuAVFn5Tm3X60p0gam0TJ+aQ7xs6sZTD0M+iv0W2887tzEtFE257Neap54HJobkdasdaET2wJimKVvtkpNS7/9U7X02T/Z5yiyiFW8tyKr4xhu0oCKH1gUBhIA5MPRDCbhx6MyagFwsgUypqJhP3ThY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uFYxxDnR; 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="uFYxxDnR" Received: by smtp.kernel.org (Postfix) with ESMTPS id 98EC1C4CECC for ; Sat, 31 Aug 2024 21:51:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725141110; bh=9+l/rVvQY/OfidVskTpiafliG/52ebU4YD96yZyGCYM=; h=From:To:Subject:Date:In-Reply-To:References:From; b=uFYxxDnRz6EL79HmDA3roYvsFPxu7sxmWtdvoFtPJF6y7Ubi3CIwUhHZmzTfIuiaq TmUnIQTAMCEbvdxZ8mc8g9KjrAGM/lzl55OrQjXREyAIGa50x4MPseAQ3K0OxZR086 +U5YZnFhIcikw1IaIniqat7/jgeOHehIpa7thiLpam7NIEj8wS0xciHUBQ++1Ic2ih YQvpKhduNztBGeVIX7dm0pGr1ebM9p3Pqru11s4E/L6WtGHakDIZsAqn2jiSoj+Byb j5zj4M/xr7ynkk3OTzg+JSM3hpBjcPvnBbQjI4+vbCZcLF2rtTGtn9l2CHzcpTZ7AL 7g5FOOSLu3zYw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 92C83C53BC4; Sat, 31 Aug 2024 21:51:50 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 219009] Random host reboots on Ryzen 7000/8000 using nested VMs (vls suspected) Date: Sat, 31 Aug 2024 21:51:50 +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: blake@volian.org 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 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=3D219009 --- Comment #16 from blake (blake@volian.org) --- At least for me, I haven't noticed any performance hit. These systems are a= ll headless though. On Sat, Aug 31, 2024, at 6:51 AM, bugzilla-daemon@kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=3D219009 >=20 > --- Comment #14 from h4ck3r (michal.litwinczuk@op.pl) --- > (In reply to blake from comment #13) > > I recently experienced this. I built a proxmox cluster with 7950x. Every > > node that I tested on would hard reset with no logs when a VM was doing > > nested virtualization. > >=20 > > Our CI testing uses VMs, and putting the CI in a VM itself makes it pre= tty > > easy to reproduce, just takes some time. > >=20 > > Setting kvm_amd.vls=3D0 seems to have resolved the issue, we had zero n= ode > > resets today and I was trying to force them. > >=20 > > Kernel is Proxmox's 6.8.12-1-pve. > >=20 > > Thanks, > > Blake >=20 > Disabling vls does help with crashes, but has too much performance penalt= y. > In my case it would lock gpu utilization at 40% max. (proxmox win10/11 hy= perv > enabled) >=20 > --=20 > You may reply to this email to add a comment. >=20 > You are receiving this mail because: > You are on the CC list for the bug. --=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.=