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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 E8F40C4321A for ; Thu, 27 Jun 2019 21:38:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C78902075E for ; Thu, 27 Jun 2019 21:38:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726441AbfF0ViU (ORCPT ); Thu, 27 Jun 2019 17:38:20 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:59897 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726384AbfF0ViU (ORCPT ); Thu, 27 Jun 2019 17:38:20 -0400 Received: from p5b06daab.dip0.t-ipconnect.de ([91.6.218.171] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1hgc5v-0000s3-Ge; Thu, 27 Jun 2019 23:38:15 +0200 Date: Thu, 27 Jun 2019 23:38:14 +0200 (CEST) From: Thomas Gleixner To: Maya Nakamura cc: mikelley@microsoft.com, kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, sashal@kernel.org, x86@kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 2/5] x86: hv: hv_init.c: Add functions to allocate/deallocate page for Hyper-V In-Reply-To: Message-ID: References: User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-hyperv-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org Maya, On Tue, 18 Jun 2019, Maya Nakamura wrote: > diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c > index 0e033ef11a9f..e8960a83add7 100644 > --- a/arch/x86/hyperv/hv_init.c > +++ b/arch/x86/hyperv/hv_init.c > @@ -37,6 +37,20 @@ EXPORT_SYMBOL_GPL(hyperv_pcpu_input_arg); > u32 hv_max_vp_index; > EXPORT_SYMBOL_GPL(hv_max_vp_index); > > +void *hv_alloc_hyperv_page(void) > +{ > + BUILD_BUG_ON(PAGE_SIZE != HV_HYP_PAGE_SIZE); > + > + return (void *)__get_free_page(GFP_KERNEL); > +} > +EXPORT_SYMBOL_GPL(hv_alloc_hyperv_page); > + > +void hv_free_hyperv_page(unsigned long addr) > +{ > + free_page(addr); > +} > +EXPORT_SYMBOL_GPL(hv_free_hyperv_page); These functions need to be declared in a header file. Thanks, tglx