From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) (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 9312728150F; Thu, 19 Mar 2026 22:06:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773957981; cv=none; b=HMH/255dW37hn9+rcC/lUpB8DGw1QRBqilhrXBcqOyftAS62jWZuxiPbn/5mz3A1b3/4WrWtQ+J1YBnNl6a+MhkNTXV50nylNXIZPx2/Bm4l/gtwI3VBJ6sx59tMMfu3NJ4W3D0y+19L1MQzxjTfLs+PvN9xUhsGaCfrWHGA39o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773957981; c=relaxed/simple; bh=5dOQ4EmFm5o6Z6xX15MRA919kToNc/Is8WZhcTPbDnA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CqBmTX108JMAdHN2G5ozvLUIyBHV4nF1e1K53VA4+a04Jg0KSbd5EvvZFLKTezfwHL3HENkPdg1aCP6Wp4m1O+c2AjPvsmWIcrEc6nBgPZJ3V0qgxwHYyzMtii7j8kAliQfAxwyvgoaWo4NCO6yBhCMVZeb0AFEuigKK7uHweP4= 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=ky55Gxzk; arc=none smtp.client-ip=198.175.65.12 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="ky55Gxzk" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1773957981; x=1805493981; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=5dOQ4EmFm5o6Z6xX15MRA919kToNc/Is8WZhcTPbDnA=; b=ky55GxzkDIq7TpqO1EcwH8odUlIZSLYvSCHaebUAaVeT9Kj3NHiQNMr0 1zEZZLHjC5y80AXDzvplUc+wEuh3w9Dq5MtT83vhrEfvDTYW+nHGXBFz5 u1FCN0pglIKEaKIozcontjvHS7kE/sDvWK6P+HDIJTSetEZ2S/6M9I/uR IEIZph53up9khwUZIRs42vurXuBStS9CjfugI26b3dlffaL3x/c6kGwgm bni40AVpTMH7Z+PCSrdCmn14vvovT8CzgG4DvOPAimulM9MruvbhXnvVg CyhzRdG2Ijg2Sc3zyV/6llPwjW6Fjhk3ZSLd0AyDPhLW3KdAIXhUdS4z4 Q==; X-CSE-ConnectionGUID: 1kSiYqffSFGFiP+LFiaBCA== X-CSE-MsgGUID: Ghe8l9d4RiavZNWw4ylwcw== X-IronPort-AV: E=McAfee;i="6800,10657,11734"; a="86520510" X-IronPort-AV: E=Sophos;i="6.23,130,1770624000"; d="scan'208";a="86520510" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Mar 2026 15:06:20 -0700 X-CSE-ConnectionGUID: u7cK1ri5RPigX2sawiLgfA== X-CSE-MsgGUID: b9yMyTfiRiG38gQURNwKaw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,130,1770624000"; d="scan'208";a="223073156" Received: from guptapa-desk.jf.intel.com (HELO desk) ([10.165.239.46]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Mar 2026 15:06:20 -0700 Date: Thu, 19 Mar 2026 15:06:14 -0700 From: Pawan Gupta To: Peter Zijlstra Cc: x86@kernel.org, Nikolay Borisov , "H. Peter Anvin" , Josh Poimboeuf , David Kaplan , Sean Christopherson , Borislav Petkov , Dave Hansen , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , KP Singh , Jiri Olsa , "David S. Miller" , David Laight , Andy Lutomirski , Thomas Gleixner , Ingo Molnar , David Ahern , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , Stanislav Fomichev , Hao Luo , Paolo Bonzini , Jonathan Corbet , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Asit Mallick , Tao Zhang , bpf@vger.kernel.org, netdev@vger.kernel.org, linux-doc@vger.kernel.org Subject: Re: [PATCH v7 07/10] x86/vmscape: Use static_call() for predictor flush Message-ID: <20260319220614.tejwx7ei2ukkljsw@desk> References: <20260319-vmscape-bhb-v7-0-b76a777a98af@linux.intel.com> <20260319-vmscape-bhb-v7-7-b76a777a98af@linux.intel.com> <20260319205802.GJ3738786@noisy.programming.kicks-ass.net> <20260319213421.br6na4dulrjm6eke@desk> <20260319214409.GL3738786@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: netdev@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: <20260319214409.GL3738786@noisy.programming.kicks-ass.net> On Thu, Mar 19, 2026 at 10:44:09PM +0100, Peter Zijlstra wrote: > > With _TRAMP, KVM complains: > > > > ERROR: modpost: "__SCK__vmscape_predictor_flush" [arch/x86/kvm/kvm.ko] undefined! > > Ah, tricky. Yeah, this would need to be solved differenlty. Perhaps wrap > this in a helper and export that? Wrapper seems to be a simpler option. > Or use the below little thing and change it to > EXPORT_STATIC_CALL_FOR_MODULES(foo, "kvm"); or whatnot. This would be nice if there are other static calls that would benefit from exporting to specific modules only. At this point, I don't know.