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 X-Spam-Level: X-Spam-Status: No, score=-10.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_IN_DEF_DKIM_WL autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4729AC636CE for ; Fri, 16 Jul 2021 20:26:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C31161158 for ; Fri, 16 Jul 2021 20:26:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233644AbhGPU3A (ORCPT ); Fri, 16 Jul 2021 16:29:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38822 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230256AbhGPU26 (ORCPT ); Fri, 16 Jul 2021 16:28:58 -0400 Received: from mail-pj1-x102a.google.com (mail-pj1-x102a.google.com [IPv6:2607:f8b0:4864:20::102a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A755C06175F for ; Fri, 16 Jul 2021 13:26:03 -0700 (PDT) Received: by mail-pj1-x102a.google.com with SMTP id d9-20020a17090ae289b0290172f971883bso9545296pjz.1 for ; Fri, 16 Jul 2021 13:26:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=8tvSxeWjAmiPV1ecaOaeAqaw4ZJnCIRGxkWGCmBjbA8=; b=jIlbt7ooesOkOpbmts5nBhgs9jIU/SiAau352QIY0Hgeubf1kEbT+OcR/XjVd4kT+v 3fD8lV4szvIhxFXyM+uYYrQGWrg5wBxeuQ2S0VFf48AH+i4/ScDMvZ/wpqxl8XaLtWB1 5sBw774M3CLXtT+Vj+GS9UQahjyyarePM6P/ZXZBxsr54dQm0m5kpkcDppT69Py56TWs 57gCQFY57LOuhVvwhFAZTfqiyYlRvDo2aFfrRtqAV3Gj+D7CgmOqL2nfkKqI7gWSNwWP Evl25i5YTmPuqDf/s9LZtr9s03mx1pQcAG1vJ40a1kDU8OqGPXFnRlemxj0KkvtmTLYB bqPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=8tvSxeWjAmiPV1ecaOaeAqaw4ZJnCIRGxkWGCmBjbA8=; b=aps0OReWdiPDV3bHe3F8po/vAz4PtW3EEpd8NN/CedMFw6+XgF5D1Kl/7C9bLXhX0p q/CjxlDEunc6/dCo7NI6Hkxi4fD97lPH9f/djP2lW56RABZEg5TzSZOTFX1FA1yCIdIp fcf82EICObEwdsey1wE/Iy1wKKI30BIuMkI3BPDtqRwpbjvU8+67qSvTh/mNl+u+yg2V geUbDylZ6dJC1I8LsPIksNTFTeOC2PB72Xcumk8fwEdwVEWh3eVXvJpTKqXfRXQmwda2 oNwH4VSl36Qt3xxxXVrH/BngNfzXBY2kMS/cyxMwL9gJ8+P6gt9Ai6GGM0HKVLwLXUGM gulA== X-Gm-Message-State: AOAM531FlaBMCr1Flp+0dL1UP304x3BEDfYTH4TyF3n1zYdWM0kKiP1k Zkejti44/yguLLUwy51HJsRYVA== X-Google-Smtp-Source: ABdhPJyV16kybEQiRhFSioiQewGBf027oKkuUbSPAPg4nYD34PcD9PtL9JdNgcXLrSoQ1Ly4eisLjQ== X-Received: by 2002:a17:90a:4893:: with SMTP id b19mr11380703pjh.45.1626467162727; Fri, 16 Jul 2021 13:26:02 -0700 (PDT) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id b15sm11895147pgm.15.2021.07.16.13.26.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Jul 2021 13:26:02 -0700 (PDT) Date: Fri, 16 Jul 2021 20:25:58 +0000 From: Sean Christopherson To: Brijesh Singh Cc: x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org, Thomas Gleixner , Ingo Molnar , Joerg Roedel , Tom Lendacky , "H. Peter Anvin" , Ard Biesheuvel , Paolo Bonzini , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Andy Lutomirski , Dave Hansen , Sergio Lopez , Peter Gonda , Peter Zijlstra , Srinivas Pandruvada , David Rientjes , Dov Murik , Tobin Feldman-Fitzthum , Borislav Petkov , Michael Roth , Vlastimil Babka , tony.luck@intel.com, npmccallum@redhat.com, brijesh.ksingh@gmail.com Subject: Re: [PATCH Part2 RFC v4 31/40] KVM: X86: update page-fault trace to log the 64-bit error code Message-ID: References: <20210707183616.5620-1-brijesh.singh@amd.com> <20210707183616.5620-32-brijesh.singh@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210707183616.5620-32-brijesh.singh@amd.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 07, 2021, Brijesh Singh wrote: > The page-fault error code is a 64-bit value, but the trace prints only It's worth clarifying that #NPT has a 64-bit error code, and so KVM also passes around a 64-bit PFEC. E.g. the above statement is wrong for legacy #PF. > the lower 32-bits. Some of the SEV-SNP RMP fault error codes are > available in the upper 32-bits. Can you send this separately with Cc: stable@? And I guess tweak the changelog to replace "SEV-SNP RMP" with a reference to e.g. PFERR_GUEST_FINAL_MASK. KVM already has error codes that can set the upper bits.