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 738B4CAC592 for ; Fri, 19 Sep 2025 07:46:39 +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:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=F9flJKM7IzkC8ce1hDWca3X0bVH2146bB5hDPYcqi/s=; b=AcFfP0C1z8UCprjAa5Cm1Yp92z vqsWUfi0A0wjon7eSyfpc8kO/WWi9b48wnv2TXGK3cxbfMCvMeeJZd4ClJRqu/R50G2VYZ8HEKa68 h/I/ebvCGoiYnRqG4Z4vbZHY0PlfpYpGEtYXygEoFdOX5ZBOy+8YGaK1xX2FBk2Dxwn8FR/lkM3Pr X8TgmCMEIXQPnbo6ThRrqaGy9SI91zdd1NzX8Oq512Pu6EHOFgGZOK1wZkoi5JNcUSq0zaeVp6NLc qKI4igkEa33rlx4Z7maKvq0bWlFbUB0QK5wODe1Q2d5F6RtL3D5yxUBjV347MdR6EeMsCzWBrbJ0V RUp2QA8g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uzVpB-000000027g0-28Sx; Fri, 19 Sep 2025 07:46:33 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uzVpB-000000027fL-0MFP for linux-arm-kernel@bombadil.infradead.org; Fri, 19 Sep 2025 07:46:33 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:Content-Type :In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date:Message-ID: Sender:Reply-To:Content-ID:Content-Description; bh=F9flJKM7IzkC8ce1hDWca3X0bVH2146bB5hDPYcqi/s=; b=RkW5hUq5iSfU0cbtn/Wk6qs5mP XPEhQt79ZxGVzbJwicOt10hPxawUBRlP6TqpD9lgjYZ4kQnOmUCSgqr4hcBYCEvezu1Qt+/9n72yn vpx1g54f6pXK0KoQSv/IS1TmO4DeGwxN9QIUzp4Djm41I/vlj0RlYcr9iVxLeJ5nLgyjCLYRFBpn3 crGK6KYh2QQ+bW2bUWizGhG3Mi3W43fqwoxN8niObSPNlncvP+nIlytytdklH+1QuVs7ZWo7brbkA 7WwhofXJUGsMzF+hnNpaxUgnMc/5pgN26XqlEIXVteD2q1A/sBo3d8HOKM0vQ6ModKKLDzPPTEsDK 9v/Wf2NA==; Received: from foss.arm.com ([217.140.110.172]) by desiato.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uzVp5-00000007mBZ-1PU9 for linux-arm-kernel@lists.infradead.org; Fri, 19 Sep 2025 07:46:31 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 912811692; Fri, 19 Sep 2025 00:46:16 -0700 (PDT) Received: from [10.164.18.52] (MacBook-Pro.blr.arm.com [10.164.18.52]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id EAA743F66E; Fri, 19 Sep 2025 00:46:20 -0700 (PDT) Message-ID: <4f5df85d-b238-4e12-8654-cab771454c49@arm.com> Date: Fri, 19 Sep 2025 13:16:18 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RESEND PATCH v5] arm64: Enable vmalloc-huge with ptdump To: Will Deacon Cc: catalin.marinas@arm.com, anshuman.khandual@arm.com, quic_zhenhuah@quicinc.com, ryan.roberts@arm.com, kevin.brodsky@arm.com, yangyicong@hisilicon.com, joey.gouly@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, david@redhat.com, mark.rutland@arm.com, urezki@gmail.com, jthoughton@google.com References: <20250723161827.15802-1-dev.jain@arm.com> Content-Language: en-US From: Dev Jain In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250919_084627_710401_9FA96782 X-CRM114-Status: GOOD ( 13.54 ) 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 19/09/25 12:57 pm, Will Deacon wrote: > Dev, > > On Wed, Sep 17, 2025 at 04:43:00PM +0100, Will Deacon wrote: >> On Tue, Sep 16, 2025 at 11:30:26AM +0100, Will Deacon wrote: >>> I'm currently trying to put together a litmus test with James (cc'd) so >>> maybe we can help you out with that part. >> Here's what we came up with. There's not a good way to express the IPI >> from kick_all_cpus_sync() but it turns out that the ISB from the TLB >> invalidation is sufficient anyway. Does it make sense to you? > Any comments on the litmus test and/or my question about serialisation > of the static key? I'll be moving the arm64 tree to "fixes only" soon > as far as 6.18 is concerned. Sorry, I had read your replies but thought I will take time to respond since it seemed this patch wouldn't land in 6.18, and I need to recall the discussion :) I'll reply to the other mail. > > Will