From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from esa3.hc1455-7.c3s2.iphmx.com (esa3.hc1455-7.c3s2.iphmx.com [207.54.90.49]) (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 DD6EF3F1052 for ; Fri, 11 Sep 2026 05:48:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=207.54.90.49 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789105758; cv=none; b=Yl03Yo5UwpFWzAAMxGuBKsdofE5rHL9OHT9mDjshDrIOrI9TVhndvEA2plvQYN1zcoqj9tt5w/TmaZPmDLAWYVTvxUq2vJ1j56Wz3lEDABQdI/fPFKQRIvDFgJIjU9lIxDo0uOgdMgn44xgL1bAZTsWc7lhpM9GorwC/hq7ciag= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789105758; 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=HvRtE3D2Nt2d83pWO7IgoZ68zWH70+j2zt8KCoJ1xZUiVZlrXyoQ9faetqagBk1VP43pfgAViFBelEyCQENAbqi21FZUr2DjKVExzEG2GzH7uJhL7egX59BeWAveRmgad+CFlHk3PLviH4dSwZ/Sxu4enJ2EfgEY2f879JA2fU8= 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=nNofjlPq; arc=none smtp.client-ip=207.54.90.49 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="nNofjlPq" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=fujitsu.com; i=@fujitsu.com; q=dns/txt; s=fj2; t=1789105742; x=1820641742; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=NX/0FxXyFfQZUAmTs3a0stKu2eAXVAkDkn+OMUSpgxU=; b=nNofjlPqYSvRmpoJ746K4NN46wsqbwhyMHFGTdOpU/6QQPvzpLAdS6/K Kfv1tgdCARMXGBbQG/9uOzS5s6AIRj5qmgOtLn5q5fn5EvmosZvzR6+FK BMOKQZ1aOf88vOE1ALHDQuhTTXBOh6nFkcKy0aPPlFXaDqMqB0wpCimyI KYiYw2o5lR4pO30olKpqYlNw72lQwGDFJHoJ9funC5l0KkpwVoix6MNkt jxbEp28VguV2DwF3B4uAp0cS4yE9VHPDFDOMx/WkxAPZ7a/NuGr/cNPQb +dknkZMsMwjU333UrtB16+JewcxShBE52FSXUAMUvzICUgUaXFznctdD0 A==; X-CSE-ConnectionGUID: cYraSv5ZSBeDvZr33V/UpQ== X-CSE-MsgGUID: +lF6nPy9TBO0G0KY0wrQvg== X-IronPort-AV: E=McAfee;i="6800,10657,11901"; a="254629814" X-IronPort-AV: E=Sophos;i="6.27,96,1786978800"; d="scan'208";a="254629814" Received: from gmgwnl01.global.fujitsu.com ([52.143.17.124]) by esa3.hc1455-7.c3s2.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2026 14:47:49 +0900 Received: from az2nlsmgm3.fujitsu.com (unknown [10.150.26.205]) (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 gmgwnl01.global.fujitsu.com (Postfix) with ESMTPS id EE58E406EC0 for ; Fri, 11 Sep 2026 05:47:48 +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 az2nlsmgm3.fujitsu.com (Postfix) with ESMTPS id 9F92C18009DA 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: linux-kernel@vger.kernel.org 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.