From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) (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 41F7223BCF7 for ; Thu, 9 Oct 2025 17:13:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760030021; cv=none; b=mEpVhhZa5cHeaJONYZAJWALCz5ePRYIt4mf1pVz4S5LXCf5Kq6DSb0tqr/Ke9W1ZMSijPe44mwdIPt9kfRIGrCXB+McbKZb17w5WzaA1aNgMuzJJr5C2BHPnrdh+aBgGPaq7/6ail7hJYQsMOtDVqESJMiQPxcPBc2ELvnHSHJ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760030021; c=relaxed/simple; bh=XVWzHrtvsM3ZOFYaaTfLKyy4NiHdMVouDpFRrIpFw88=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Cwk1ANdqnNIE9TY8uCOzSWlzct+8imI+uJThMoCWkFB2y2Mo7GwVuwXJb5H1wvH923L9+5ZLrwXPnnma5+/MfljC/RlJDsqDsKv1oVSfmmu+sFUtPepXjOpydfVtlTMpXWvPnNeCSL094L7ZckegdNl6/7GrtDdFCc2w13Fn5Lk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=PZTwpBpe; arc=none smtp.client-ip=198.175.65.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="PZTwpBpe" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1760030019; x=1791566019; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=XVWzHrtvsM3ZOFYaaTfLKyy4NiHdMVouDpFRrIpFw88=; b=PZTwpBpe2v769F2R5UC47THz/Ztm+uP7veZztcT7eQLqtIoyB5rbk/Gw GpPTzLZfeqh1bf5RO4ZroZJ6U3Tmnv/8jdXpu4chNZgLlBN1ZsEs2FVsY nrEazbjfSExDu9t1kJdKIY3WTMXvO/bAqAUk4VlYKoBInoSF5LwBeSgoq qtuVwn2GtyFY7QqiXfG8vm8bAIdH6SblVz9qY4TW6n0PQosMz4jopRr8K i14JqZE3KCI3knx4m8du4M/sKYmoRs9zEj9NM37HCR2Nsx/9JR9JyCgQ2 QaP8eUH8eEtxcIcqgigEW3ZdxPvazzBVKVuqmq6Ihfrh+/pOImM+NEOAa Q==; X-CSE-ConnectionGUID: KkOea2UTRh+zwDvzyz2Asw== X-CSE-MsgGUID: AM6Xdr1cQZmf2LeQQBe7fQ== X-IronPort-AV: E=McAfee;i="6800,10657,11531"; a="66077636" X-IronPort-AV: E=Sophos;i="6.17,312,1747724400"; d="scan'208";a="66077636" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2025 10:13:38 -0700 X-CSE-ConnectionGUID: cuGYk029Qh6eB2UrSEX5AA== X-CSE-MsgGUID: XcaczV4JQkuSXGpzCmys1A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,217,1754982000"; d="scan'208";a="180792808" Received: from dnelso2-mobl.amr.corp.intel.com (HELO desk) ([10.124.221.52]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2025 10:13:38 -0700 Date: Thu, 9 Oct 2025 10:13:31 -0700 From: Pawan Gupta To: Borislav Petkov Cc: Josh Poimboeuf , "Kaplan, David" , Thomas Gleixner , Peter Zijlstra , Ingo Molnar , Dave Hansen , "x86@kernel.org" , "H . Peter Anvin" , Klaus Kusche , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] x86/bugs: Qualify RETBLEED_INTEL_MSG Message-ID: <20251009171331.vplg2zcfystojcxo@desk> References: <20251006131126.GBaOO__iUbQHNR6QhW@fat_crate.local> <20251006140442.GDaOPMemqB7SRJSHWL@fat_crate.local> <20251007182257.ywrqrrhgrtrviila@desk> <20251007221229.GAaOWQTadGWlZSeAo_@fat_crate.local> <20251007230821.5shpa3pusyzaohb2@desk> <20251008102136.GAaOY7MBd4_VBPBNtG@fat_crate.local> <20251009101557.GAaOeLXYDjOnyFTWdg@fat_crate.local> 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: <20251009101557.GAaOeLXYDjOnyFTWdg@fat_crate.local> On Thu, Oct 09, 2025 at 12:15:57PM +0200, Borislav Petkov wrote: > On Wed, Oct 08, 2025 at 11:04:32PM -0700, Pawan Gupta wrote: > > Thats a lot. OTOH, most of the bugs.c is __init code, do you think it is > > still problematic? > > What is wrong with aiming to not have dead code in the kernel if it can be > removed cleanly? Nothing wrong with that. There are certain things (like I mentioned earlier) that needs to be moved out of bugs.c.