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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 78975E6C5E3 for ; Tue, 3 Dec 2024 01:21:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=G7tKWX1j0TJc1AZqeUpwVF9dIXqKxSoumxFecXZ6Pkk=; b=r2CY/gneyIwLBYJTT2Bohrzhu0 SjU2rjAEacZJeeVDAplzBJ3NXTByFu8ud0lYdwMNWIWkYxfOuGdM5lRu3OrQYYJaejhKptuF2yzFd DxCps1SIXLJYhqV5MutX5bwOSyccd/x8cb9wC12fGqt5BKJNV1sBaIzhM4rDeImWJ/ajOw+Ki7NRk MBqFy9LEGLJ9u2aKYS7lKWLRPOkJxolfbp43Tnf4G9QMPspER2JFPuYjaEYFPat24aFTYRO3dSXx+ xuKQPoI1GrxEkaAshnJWXaEn3rpK0FoCHXWlpjuqAqELsVUE73XOxwx3XeuvGqLVtHoMPKK7IKEWN CQUoFCuA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tIHbD-00000007uzl-0XyE; Tue, 03 Dec 2024 01:21:11 +0000 Received: from out-189.mta0.migadu.com ([2001:41d0:1004:224b::bd]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tIHaA-00000007ut2-2Kxx for linux-arm-kernel@lists.infradead.org; Tue, 03 Dec 2024 01:20:10 +0000 Date: Mon, 2 Dec 2024 17:19:54 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1733188800; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=G7tKWX1j0TJc1AZqeUpwVF9dIXqKxSoumxFecXZ6Pkk=; b=SEPcGcz1mSLl64Ld90WUSVmBIm4CdmjhLZaoqZ2AkGy6JQVaGDxUN9hZerEjBSl0dvpU4d kz0tYnceZbgEMGGOeJ7C55bjisVbgrxJKbcYHbAMkMJ2PY3RcYxCH5+DfEIJzD2ietZ9aX I/l43pcPt82s44XSi10PPdtVB8kMZ6k= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Oliver Upton To: Vitaly Chikunov Cc: Marc Zyngier , Will Deacon , james.morse@arm.com, linux-arm-kernel@lists.infradead.org, Catalin Marinas , linux-kernel@vger.kernel.org, mark.rutland@arm.com Subject: Re: v6.13-rc1: Internal error: Oops - Undefined instruction: 0000000002000000 [#1] SMP Message-ID: References: <20241202045830.e4yy3nkvxtzaybxk@altlinux.org> <20241202153618.GA6834@willie-the-truck> <86ttbmt71k.wl-maz@kernel.org> <20241202155940.p267a3tz5ypj4sog@altlinux.org> <86ser6t6fs.wl-maz@kernel.org> <20241202223119.k3uod4ksnlf7gqh2@altlinux.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241202223119.k3uod4ksnlf7gqh2@altlinux.org> X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241202_172008_053488_97FCEF1C X-CRM114-Status: GOOD ( 14.39 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Dec 03, 2024 at 01:31:19AM +0300, Vitaly Chikunov wrote: > Marc, > > On Mon, Dec 02, 2024 at 04:07:03PM +0000, Marc Zyngier wrote: > > On Mon, 02 Dec 2024 15:59:40 +0000, > > Vitaly Chikunov wrote: > > > > > > Marc, > > > > > > On Mon, Dec 02, 2024 at 03:53:59PM +0000, Marc Zyngier wrote: > > > > > > > > What the log doesn't say is what the host is. Is it 6.13-rc1 as well? > > > > > > No, host is 6.6.60. > > > > Right. I wouldn't be surprised if: > > > > - this v6.6 kernel doesn't hide the MPAM feature as it should (and > > that's proably something we should backport) > > How to confirm this? Currently I cannot find any (case-insensitive) > "MPAM" files in /sys, nor mpam string in /proc/cpuinfo, nor MPAM strings > in `strace -v` (as it decodes some KVM ioctls) of qemu process. If you can attach to the QEMU gdbstub of the VM, info registers will dump ~everything. If the value of ID_AA64PFR0_EL1.MPAM (bits 43:40) is nonzero then the host KVM is erroneously advertising MPAM to the guest. -- Thanks, Oliver