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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id A620BC433F5 for ; Tue, 25 Jan 2022 13:28:56 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 2DF686B0073; Tue, 25 Jan 2022 08:28:56 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 28DF06B007B; Tue, 25 Jan 2022 08:28:56 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 156B36B007D; Tue, 25 Jan 2022 08:28:56 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0149.hostedemail.com [216.40.44.149]) by kanga.kvack.org (Postfix) with ESMTP id 080FB6B0073 for ; Tue, 25 Jan 2022 08:28:56 -0500 (EST) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id C56AA92EB4 for ; Tue, 25 Jan 2022 13:28:55 +0000 (UTC) X-FDA: 79068889830.29.952E042 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf14.hostedemail.com (Postfix) with ESMTP id 7FC20100036 for ; Tue, 25 Jan 2022 13:28:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=WJW6Lj/AQ2mLNX4DlwunesX+5YC4+prbjbipchmJRxA=; b=An8lzReU29Jk6j7duCNt1M5Qs+ bAgwHNg4/IZcVH50tT/Q602zE8c9YJ1BhMIgBlKe7T+SoH9MKJaSZShy6h/PW3qe6Cj1hgi7eV8+K Jq0qu2oqzQkSMZPJfdJXGULyIHZaxHLS00F+WYCnz+zws1xnY4T2HEjx5SgWgrF04Ql7g392cmvgk pj+x8IxQGRdagwq4Gn6jhqFPfoF7byBai6UIBLo/O/Hl9R2vJgld5U6pWsvFSk6L1YykRs/NPo3r8 /t97rGFiUjUguzY+yhnCfq7rhzfnT057ZaPxgq7ibCy+Nxg/cGNn2E13K2bzAEFMw9/opXQe3N3Mx 3YfGCYsQ==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nCLsP-002qac-Km; Tue, 25 Jan 2022 13:28:49 +0000 Date: Tue, 25 Jan 2022 13:28:49 +0000 From: Matthew Wilcox To: Anshuman Khandual Cc: linux-mm@kvack.org, akpm@linux-foundation.org, naoya.horiguchi@linux.dev, rostedt@goodmis.org, Ingo Molnar , Zi Yan , Naoya Horiguchi , John Hubbard , linux-kernel@vger.kernel.org Subject: Re: [PATCH V2 2/2] mm/migration: Add trace events for base page and HugeTLB migrations Message-ID: References: <1643080105-11416-1-git-send-email-anshuman.khandual@arm.com> <1643080105-11416-3-git-send-email-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1643080105-11416-3-git-send-email-anshuman.khandual@arm.com> X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 7FC20100036 X-Rspam-User: nil Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=An8lzReU; dmarc=none; spf=none (imf14.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-Stat-Signature: c63cts5ikgupeczwy7p6gdzbxka8od9a X-HE-Tag: 1643117335-870731 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000165, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Jan 25, 2022 at 08:38:25AM +0530, Anshuman Khandual wrote: > + TP_printk("addr=%lx, pte=%lx order=%d", __entry->addr, __entry->pte, __entry->order) In these days of increasingly advanced Rowhammer attacks, is it wise to let userspace know exactly which physical addresses are being used for virtual addresses?