From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=192.198.163.14 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792566095; b=gKFuXbLBqX2eWZGBr3P9mr91bhe4MNc8lFXervFsUwwco4w7YnIZA2nEmr2+hJssiVEC kfKWFl7s71rEtBG7UECPoSZcbQV7i+Lz//yUdB+GkiZ46IsqCNe+1I8XSoa16gHW9vKfZ 2KAYDaIPAUhvj5TZLiMAnc6PNppcNcmwLtzJyWM561o/Pk8WEf3DL1R26ckuhc2Y8+fvL RpdD3H9NbvtuvrPxp+pJ2z8oH0ovpawaQUFn+fbRZKSwsYbFqB+v3srfgaBkjkfvnW7Nh N/pn2iCHbsWrvYTiexrNmSWw3RIVH3CsNEEgMc7428REl2rvHG+Mf5I6YA6ME+hS4Uw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792566095; h=DMARC-Filter:DKIM-Signature:X-CSE-ConnectionGUID:X-CSE-MsgGUID: X-IronPort-AV:X-IronPort-AV:Received:X-CSE-ConnectionGUID: X-CSE-MsgGUID:X-ExtLoop1:X-IronPort-AV:Received:Message-ID:Date: MIME-Version:User-Agent:Subject:To:Cc:References:Content-Language: From:In-Reply-To:Content-Type:Content-Transfer-Encoding; bh=LW6vT8/bJRD2PuTEJwndC38LlBOnCHCX+4SCfvFcgSg=; b=AaZnS8G4I63RzWBwckEWo7+rNdA6ekr5oC9qcLXCjJjpTLf8ys3BNjoNRFa3+8zOx+ZF +DP2RuvL+Y+etVlIxxi6d6dAMihhMs6FaRJwdntBTx2CpWqVU3C/vdWJn1smPGABjc6RQ +CaiVmib1woeJWMG3+Rz6kLQ+X/lvJ3u+EqKk9FK53YmaVAN2cykpEMaqV8pw1yQem4dU 2D16duf6CqXUwAOEnz0YRHc5tEKb93Bw5czxLc0LI2fhT1TKz9v3SiPiucmY3k4PPX/in fPPjLjt6oVlB6z1WRjYH6/sEcGHDYVH9lvyWzs4OBCQDG33GfTO1X8Yh1O17SJyJc5Q== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b="Q/vTJsmy"; arc=none smtp.remote-ip=192.198.163.14 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 30042606A31B; Wed, 21 Oct 2026 07:01:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 30042606A31B Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=Q/vTJsmy DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1792566096; x=1824102096; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=NJ31YHh5++zU4DamiwZUEuDhe5/eYnwgnLLc8jg5Nd8=; b=Q/vTJsmye+4m4tZMPhR4vjd8b/BNhtcp8prp8iDmPFwODzob2ghIjm3n lGrh9+93OP/AEll0VxQNR3QtrAsIaNEAaDU9eP2CgIKZ1o5RTxuAMAKyZ VaC2QcawYn5xehslHiqejT+IuySQzcN4cYEoQ8Kb2xp8r0WNGFI0MR/OG S+qQ9g9qh3L/Ebs+TIadGBhFJ76P33Tf+h6C6r3b/EOKeLCIg/kFro6Er 0u9MeSkyNk80z3zMvFopV1n/aggR3xB10aAGDCSJxliaGq1dTHgSB1OSm F+WGeYKXFw9X7maM9POws+9+/9uaVpIYo6kmUDMf0jUm1Ud8Yg6XIP4Gc w==; X-CSE-ConnectionGUID: HHf49g/DS0u06byCEGpnyg== X-CSE-MsgGUID: ybdSDO5eTrmAHC5TpXVp1A== X-IronPort-AV: E=McAfee;i="6800,10657,11941"; a="1298824" X-IronPort-AV: E=Sophos;i="6.27,169,1787036400"; d="scan'208";a="1298824" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Oct 2026 00:01:35 -0700 X-CSE-ConnectionGUID: e6Co0PlaQvunqGRtRrT3rQ== X-CSE-MsgGUID: nt3EcC7mQNm5sJP0uFPQeg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,169,1787036400"; d="scan'208";a="3026620" Received: from unknown (HELO [10.238.0.97]) ([10.238.0.97]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Oct 2026 00:01:32 -0700 Message-ID: <579383f0-3192-49e8-af14-43504cc39ebc@intel.com> Date: Wed, 21 Oct 2026 15:01:29 +0800 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/3] KVM: split CONFIG_KVM_PRIVATE_MEMATTR_VM out of KVM_VM_MEMORY_ATTRIBUTES To: Paolo Bonzini , linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: Ackerley Tng , Fuad Tabba , Binbin Wu , Shivank Garg , Yan Zhao , Sean Christopherson References: <20261020131447.122096-1-pbonzini@redhat.com> <20261020131447.122096-2-pbonzini@redhat.com> Content-Language: en-US From: Xiaoyao Li In-Reply-To: <20261020131447.122096-2-pbonzini@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/20/2026 9:14 PM, Paolo Bonzini wrote: > With Linux 7.4 the "private" memory attribute was moved from the VM > to the individual guest_memfd file descriptor. The old semantics are > available for backwards compatibility via CONFIG_KVM_VM_MEMORY_ATTRIBUTES. > > However, this ties support for VM memory attributes entirely to > a backwards compatibility symbol, which is a problem when adding > VM memory attributes other than PRIVATE. Thus, make > CONFIG_KVM_VM_MEMORY_ATTRIBUTES the equivalent of the old > CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES, and use a more descriptive name > for the private memory attribute. Do this now, instead of waiting > for more attributes to come, before distros start adjusting > their build configuration. > > Signed-off-by: Paolo Bonzini Reviewed-by: Xiaoyao Li