From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from esa2.hc1455-7.c3s2.iphmx.com (esa2.hc1455-7.c3s2.iphmx.com [207.54.90.48]) (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 660323B2AA for ; Fri, 11 Sep 2026 05:47:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=207.54.90.48 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789105678; cv=none; b=jStQnZkxMIXRyBer3B+XMg18+DUQ65Ef9ZL/nIyW4e8PSC9/bDALknfg2n7eDV+ffLHEToh89l1IOgxGqjB3/2xsZxRo7DGtdLgrKZ0MiLL1x2lKmhaH2wHe0tJAhwVUvzA+23fzUFLqlRMaLC+sdnncfdLmUJywA8+i3YHVIr4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789105678; c=relaxed/simple; bh=NX/0FxXyFfQZUAmTs3a0stKu2eAXVAkDkn+OMUSpgxU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=aBl349z93M5KoIdhsTJFFw1ah9xnccHsTgXU2ejIyWnigp6ebyPOqDlh/5TFUaGPI0CS1llWqZpb5wbVC1/I1P+9d5zbrHHLoaXezXsIReJ4oCQxX6r2wdFRbRD6ryknpPXr9Q+qrwXlhyC+Nn0IpTtuWMe6lCbTlsBNF4PIX2o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fujitsu.com; spf=pass smtp.mailfrom=fujitsu.com; dkim=pass (2048-bit key) header.d=fujitsu.com header.i=@fujitsu.com header.b=CV4JIYmN; arc=none smtp.client-ip=207.54.90.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fujitsu.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fujitsu.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fujitsu.com header.i=@fujitsu.com header.b="CV4JIYmN" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=fujitsu.com; i=@fujitsu.com; q=dns/txt; s=fj2; t=1789105681; x=1820641681; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=NX/0FxXyFfQZUAmTs3a0stKu2eAXVAkDkn+OMUSpgxU=; b=CV4JIYmN0lP/VTCCOb/+2f/x0uxTKqrT7feDBm1YLedC6g5dLMP5WlpE JNNcT7FPAK7GBMrF7iYFVaQ+Hce1U7Se+MawCXpTFI9lbQHMfy57L5hUv EJKx3jk6HC6IfLK6Ko9aZKSaKpmzfrueJ2362idwn7T616W/YntA1pdiG pnB4b5RoVNbXQ9EocMrfu+8JV8wAYv69IRbwgIMCs+X9822ziDzqfrN7H evFRALRIUQASJ1UVtPnwP1b5i7eldQomEKEqm99FouvCO5t3bDKtxZ/si 27LCmobz04bukPNp+ufLXj8vHxagNdHC1PNdGXB2bNUYKGZlYkrhfcWoF Q==; X-CSE-ConnectionGUID: NMg1aRiGRY+BvljUZRd5QQ== X-CSE-MsgGUID: Y+CXaFL+T/G4nI7EDtwb+Q== X-IronPort-AV: E=McAfee;i="6800,10657,11901"; a="254710077" X-IronPort-AV: E=Sophos;i="6.27,96,1786978800"; d="scan'208";a="254710077" Received: from gmgwuk01.global.fujitsu.com ([172.187.114.235]) by esa2.hc1455-7.c3s2.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2026 14:47:53 +0900 Received: from az2uksmgm1.o.css.fujitsu.com (unknown [10.151.22.198]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by gmgwuk01.global.fujitsu.com (Postfix) with ESMTPS id 068651002BB6 for ; Fri, 11 Sep 2026 05:47:49 +0000 (UTC) Received: from az2nlsmom1.o.css.fujitsu.com (unknown [10.150.26.198]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by az2uksmgm1.o.css.fujitsu.com (Postfix) with ESMTPS id ADB53926746 for ; Fri, 11 Sep 2026 05:47:48 +0000 (UTC) Received: from sm-arm-grace07 (unknown [10.124.178.20]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by az2nlsmom1.o.css.fujitsu.com (Postfix) with ESMTPS id 216CE829F12; Fri, 11 Sep 2026 05:47:42 +0000 (UTC) Date: Fri, 11 Sep 2026 14:47:40 +0900 From: Itaru Kitayama To: Marc Zyngier Cc: Shuai Xue , Wei-Lin Chang , Wang Han , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, oupton@kernel.org, tabba@google.com, joey.gouly@arm.com, seiden@linux.ibm.com, suzuki.poulose@arm.com, catalin.marinas@arm.com, will@kernel.org, ljs@kernel.org Subject: Re: [PATCH v5 0/6] KVM: arm64: nv: Implement nested stage-2 reverse map (new data structure) Message-ID: References: <20260810205038.118843-1-weilin.chang@arm.com> <20260902163500.1841671-1-wanghan@linux.alibaba.com> <877bl26aqg.wl-maz@kernel.org> <46342b48-550e-42c1-9d9f-e800c72269c2@linux.alibaba.com> <874ig55u5h.wl-maz@kernel.org> <87o6ea4q67.wl-maz@kernel.org> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87o6ea4q67.wl-maz@kernel.org> On Sun, Sep 06, 2026 at 11:42:08AM +0100, Marc Zyngier wrote: > That's an interesting remark. I guess we could add some extra tracking > for that, but let's see what we can do about the above first. > > I've hacked something together and pushed the result at [1] > (compile-tested only). I'd appreciate it if you could put it to the > test with your setup. > > Thanks, > > M. > > [1] https://web.git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/log/?h=kvm-arm64/unmap-vmall On Neoverse-V2 though, with NUMA balancing on, the WIP kernel from yesterday brought up the Ubuntu 7.0.0-31-generic kernel online without an issue. I will test the host kernel again when the new code is merged to kvmarm/next. Thanks, Itaru. > > -- > Jazz isn't dead. It just smells funny.