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 lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (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 0D28CCD342C for ; Wed, 6 May 2026 11:25:02 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wKaMY-0007u1-Vl; Wed, 06 May 2026 07:24:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wKaMW-0007te-Sx for qemu-devel@nongnu.org; Wed, 06 May 2026 07:24:21 -0400 Received: from linux.microsoft.com ([13.77.154.182]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wKaMV-0005cr-9t for qemu-devel@nongnu.org; Wed, 06 May 2026 07:24:20 -0400 Received: from linux.microsoft.com (unknown [86.121.140.248]) by linux.microsoft.com (Postfix) with ESMTPSA id 987AD20B7165; Wed, 6 May 2026 04:24:12 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 987AD20B7165 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1778066654; bh=GoZJx9dIcuVmTAvhyFp4px9Uz3RC9sgtfyFXYjrK+8I=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=EpDhFUsYQZeEUYdIPWwUYD0OLVt7tE052Hbm5mIU/ZYY5prfVMBKT6sxqIy9gS0aY aTxDMOcABpgcmUFhQjyyRerVaPgJ0V1TImyl/YPKKb7htCb6ysaUQrdzknUlOl2E7j FKgIswepLH4tG3/iOgnkxbqLwfpeO+bzUBOLLgns= Date: Wed, 6 May 2026 14:24:10 +0300 From: Doru =?iso-8859-1?Q?Bl=E2nzeanu?= To: Magnus Kulke Cc: qemu-devel@nongnu.org, Wei Liu , Zhao Liu , Paolo Bonzini , Wei Liu , Magnus Kulke , Doru =?iso-8859-1?Q?Bl=E2nzeanu?= Subject: Re: [PATCH v6 9/9] accel/mshv: disable la57 (5lvl paging) Message-ID: References: <20260416121116.527927-1-magnuskulke@linux.microsoft.com> <20260416121116.527927-10-magnuskulke@linux.microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260416121116.527927-10-magnuskulke@linux.microsoft.com> Received-SPF: pass client-ip=13.77.154.182; envelope-from=dblanzeanu@linux.microsoft.com; helo=linux.microsoft.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Thu, Apr 16, 2026 at 02:11:16PM +0200, Magnus Kulke wrote: > This change disable la57 paging on the mshv hypervisor on both the > mshv processor feature bitmap and mask the cpuid feature leaf to the > guest. > > Since the removal of hypervisor-assisted gva=>gpa translation in > 1c85a4a3d7 we have seen MMIO errors in guests on la57-enabled hw. We > will have to investigate and test this further. > > Signed-off-by: Magnus Kulke > Reviewed-by: Anirudh Rayabharam (Microsoft) > Reviewed-by: Wei Liu > --- > accel/mshv/mshv-all.c | 7 +++++++ > include/system/mshv_int.h | 2 ++ > target/i386/mshv/mshv-cpu.c | 15 +++++++++++++++ > 3 files changed, 24 insertions(+) > Reviewed-by: Doru Blânzeanu