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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 A7F14CD4F54 for ; Wed, 20 May 2026 05:49:45 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4gL0x36Lzfz2xy3; Wed, 20 May 2026 15:49:43 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2607:f8b0:4864:20::432" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1779256183; cv=none; b=jlubafIzPw3qDoZWt/M9eBEFBEjbJF26NmLEv46zkiDkjNUkacCkFc2ZQ/j+8CT8K/wU526fhVQTn375KZNkQp4h1SrjADge0o7Kcr55yOKoig48v2rdWD28uEFQKr7tEXq4Pkg645THVaqqpSFb8tyOseqW58nxzKZ8ZjxEbxVhnXg8x557IXrTR1pBUmX/jZzqzNZ21GfZc9xPPiDzIkXWMkCB1Tu35SWbdZdz5UOrM/2N3C/yVIo4t7BA+b2ZtNpABBwl3Ydgz9Bt5a1JoXeU6m3cZUykQRnosYHnMbIasnTLgGZOfXB4n7qF2WcaaHpYv1JoP7zGprmQ5OcLgA== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1779256183; c=relaxed/relaxed; bh=MTqoHv+DicNYk5kIYTnplBIAwN/Kr2WwcNuJKFIQIwE=; h=From:To:Cc:Subject:In-Reply-To:Date:Message-ID:References; b=o0N0KbhBTo2ceF0cjbu6veMO9hyFQcwTuzA0Dk0v5Q4Em4CDa9uTTwOJ42/FaLRlJ8ELXibApmxI/JI2hXqIMLz+uXWMsaY+o5BlrO6HMM2djlJmqlpyftbYckpWIsYVlccOuK8WH+pZErG1sjy5hJVExQnbs90Z8Zs8f9MpKQUz75H/iHuI04bY0L0iC4o6S1WKjYILI6uq1qylOfbkL+Czvy7HQtrVWFrdgMI7vTlwdygznxd781wFnbYOxsEg4cV9K04ZGBqWozkzNlE/YYxAmOCEcHnN5E1TFGPF58bVzXT1yyOz300XH2OB/JRvDZNBnuUnEvCaQIVz/1Uuiw== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=eqe71YDq; dkim-atps=neutral; spf=pass (client-ip=2607:f8b0:4864:20::432; helo=mail-pf1-x432.google.com; envelope-from=ritesh.list@gmail.com; receiver=lists.ozlabs.org) smtp.mailfrom=gmail.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=eqe71YDq; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::432; helo=mail-pf1-x432.google.com; envelope-from=ritesh.list@gmail.com; receiver=lists.ozlabs.org) Received: from mail-pf1-x432.google.com (mail-pf1-x432.google.com [IPv6:2607:f8b0:4864:20::432]) (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 lists.ozlabs.org (Postfix) with ESMTPS id 4gL0x20Z2Rz2xrC for ; Wed, 20 May 2026 15:49:40 +1000 (AEST) Received: by mail-pf1-x432.google.com with SMTP id d2e1a72fcca58-8413ac3d82fso121244b3a.0 for ; Tue, 19 May 2026 22:49:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1779256178; x=1779860978; darn=lists.ozlabs.org; h=references:message-id:date:in-reply-to:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=MTqoHv+DicNYk5kIYTnplBIAwN/Kr2WwcNuJKFIQIwE=; b=eqe71YDqAFO8xt8JEQCnVO4eUZ8Tjqo/uPfkSOsc08MIeiDXplh6z316BCiKa3+pdY 8Br1EbEgB9b1YsCeyxVfHxPNwSwGf1rHzdXB1snYNgMgsvGxoPimIys9Tk8JdsI9IVIm rDw5m/x1MQVja/R2X4QiJFCBaFhcIs6JzWFM3gRjkBr8YmUPZKjQj5TVUXhzxdOv5a0c kj6i/K56APfbaYE55uFzyMmcGr8D5GjhnFQ4y5B06ooeo4bv6eFmPOVB427p7XzKZeRd E8zhUUizaDQljPrHn0xCcVjrWJuhrU1D+caJxvAo+v4HAqH2bIKqZrFsBrof9QfRmdja 6lGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779256178; x=1779860978; h=references:message-id:date:in-reply-to:subject:cc:to:from:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=MTqoHv+DicNYk5kIYTnplBIAwN/Kr2WwcNuJKFIQIwE=; b=VuuKYsqQ3Vt6RtcRRqXBpYyluxDNZbBIR166eo2LEndtAE0uWcXxpkVLl85bF8BXtF Fzetd5XGNJ5a5KKv9+5SNBIaWnCCTHHiRGt08s3Qy/LKASPOxTwFnfI1RzJweEllLn0d c2FPiALuVrEwuuk7IBCuMSQPJYagL90gkQ1ob+UpZYHE9O+/cz2ySYflTuQVCTyZ3C+S pwCLf715T1Eh1raSJ3YflNT70vc8nrM1e6wx9UOgSXnLRkgn0G/sMR9RUeSjR/KkTvun mGiOEU2sACODNVnQCfAQyoW4GcAqqIwNdRG9GiNQzPm8Dg039QDNpQXjE00dHoywAFYt Jw3w== X-Forwarded-Encrypted: i=1; AFNElJ/prWlaybnJ4wNEwcCzbGkCQtIagMUMFdQIo4pPZBZKZz+4UflKFgTj253sYZLN0N/o3HaTbuCCwZhSmyw=@lists.ozlabs.org X-Gm-Message-State: AOJu0YwbLJjV17rUd+O5Y3IMlHn2PPLyXeYyuV4ZdmDfPosY4srjW3pN wdGZ6i/2ioEgYJ+wUT3zjd0A5vnuXuH6MwasrbTPsnnmj+/57iRDuvzz X-Gm-Gg: Acq92OFuFtvhvsUshoIMu9MRjmC5pRqdGG4tK3V00YtZzD2a6md2mzjU3+DJTpNDMZ7 7SlE63CR2pEb7X+UoWKxN1oviA/Ob7LM2RL8fNbaG4/S4cFc6RjdCRNDv6dXscRQkpGIBwsLpdj uTinbEHPvvqHS9irmmpS7NNyEoi/oT95yoTS1w4fR+v+WsRrwbqfxZAHH+GXwB3RAq5M78IrVfl 3uULPJaBilKPABLQI/yQLPyrrPzURbw/og8aOkmsgKqWUxwxwoJdyrtvic5ZvN7R/D/ld8Y+8G7 RInhoPsXrV5Gdrabt5ZyqmkIZhXabl3U91RQbEVwDEAn8uqI7jUF9wZyHonKvJNuFyvdO2XqNfC EIhYFbOuzUk+5rk45oLCTm/y4INvvLnUj4douE3+6H93pvtN7RU8R6W3JU+K3OEAYOnL+UlFdMf Q5glHqKgaCVH2CP41tRXYaUzUGRGcsrOiQ X-Received: by 2002:a05:6a00:4193:b0:82c:9126:31e3 with SMTP id d2e1a72fcca58-83f33d9dc33mr23321111b3a.26.1779256177788; Tue, 19 May 2026 22:49:37 -0700 (PDT) Received: from pve-server ([49.205.216.49]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-83f196660f9sm24881929b3a.10.2026.05.19.22.49.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 May 2026 22:49:37 -0700 (PDT) From: Ritesh Harjani (IBM) To: Sayali Patil , linuxppc-dev@lists.ozlabs.org, maddy@linux.ibm.com Cc: linux-kernel@vger.kernel.org, Mahesh Salgaonkar Subject: Re: [PATCH v2 2/2] lkdtm/powerpc: add PPC_RADIX_TLBIEL test for radix MCE validation In-Reply-To: <85c9b59217bcecb3c7af52e9d5b175266771d7de.1778975974.git.sayalip@linux.ibm.com> Date: Tue, 19 May 2026 08:19:13 +0530 Message-ID: References: <85c9b59217bcecb3c7af52e9d5b175266771d7de.1778975974.git.sayalip@linux.ibm.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list Sayali Patil writes: > Add a new LKDTM trigger (PPC_RADIX_TLBIEL) that executes a process-scoped > radix TLBIEL instruction to exercise the radix MMU behaviour and > associated machine check exception (MCE) handling paths. > > This provides a way to validate MCE handling in radix mode. Currently, > there is no dedicated LKDTM test that exercises this path or allows > triggering radix-specific machine check behaviour for validation. > > The test is only enabled on ppc64 systems with radix MMU > support and If radix is not active, the trigger is skipped and reported as > XFAIL. > yes, ISA states that RIC=2 and IS=0 is an invalid form of tlbiel causing machine check. It's good to have this test case which can test MCE handling while in radix mmu mode for an invalid TLBIE[L] encoding. Looks good to me. Feel free to add: Reviewed-by: Ritesh Harjani (IBM)