From patchwork Wed Jun 14 07:35:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juergen Gross X-Patchwork-Id: 107770 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp1066633vqr; Wed, 14 Jun 2023 00:51:11 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ64Cp+kYQsO48w9qygLxaa1vE/OfqgwDGbky3ZejEJTfwfaRSO0IIYffVYPwJht4tLS8SsZ X-Received: by 2002:a17:907:2dac:b0:978:666e:3bf with SMTP id gt44-20020a1709072dac00b00978666e03bfmr752310ejc.35.1686729071636; Wed, 14 Jun 2023 00:51:11 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686729071; cv=none; d=google.com; s=arc-20160816; b=IJrLvHaHck1XJGoIskt3/ycabjcIqPCDXjYt8TcERbccLxgw8YvhCzN9lwBo7adNqR PNx0xRi7V7mngK+JCD9wlh0sbpvKs0mYxAsWXA23/JN+2dxKkNlrdDrfrZ/TTnKsXCzH yNXzxqSiEho3VdojmaaRdCxhjRtzel5hZO8n40gcb/tFf/nNo3yJ8zWtSYbqdJWqTYC4 GRUWrrL8tXAXZcE6fe8qr3Tm83SdZd/DeUzi+yqvOCV7C+Slk+nFdSdpbJoQ5a+P23Ry vnjM+5MPU2Ila5INqehYdcnSD5R86/dcDaT0mWjShNdP6ixL1VWeEQn92Yuky4LR3rF+ 0qpw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=YgJA17a1c7AVDrVoB4HwZlBuwIqmPEUlEc3gzIFv3pY=; b=mIk83j1rgnmrDxPeAnKnALl7zqMxnSJ44gEqsmVz3vRxNoHxyQeY/ihiS6a8pmUTw9 ehn0QCwh4MUartZ40avzqYb2bI66aeKdFUGliEVbztVaqetYTcUikwc8tp2EK8zUJ3xe e3Z+c/ePlDoPiGLGdduZWcYuPhUmEe/33L3Uk/FCMSIJWHIX5OHqgzHKuBffisBWL4zz 0uMQnXQMn2ZoluwHDrAWaeg63CqUkVAawznIrPly0bPVvbmRnSuZ7KBWcKBHAkellS5W K1T1bY8BsjOmwQm9GjB1mrMbKuY8d8QE9vxtLdb0z5QdBtTJ2fPFZCO7x3WeyQwl2nLu AdCg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=SrM4IiLy; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=suse.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id t22-20020a170906949600b00977d46f8f86si7435896ejx.369.2023.06.14.00.50.43; Wed, 14 Jun 2023 00:51:11 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=SrM4IiLy; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=suse.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243356AbjFNHfX (ORCPT + 99 others); Wed, 14 Jun 2023 03:35:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243255AbjFNHfU (ORCPT ); Wed, 14 Jun 2023 03:35:20 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C16F31727 for ; Wed, 14 Jun 2023 00:35:15 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 73AED21857; Wed, 14 Jun 2023 07:35:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1686728114; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=YgJA17a1c7AVDrVoB4HwZlBuwIqmPEUlEc3gzIFv3pY=; b=SrM4IiLyt4N7guH1CZIQ0nKGj3L6b9HODrNWAv2YMcYoNAzVz4cSCZUEiGSmZnKipU46r4 2rb0hubPsFyJGeQAp07phllcBHG8owzj2AAk30x9UBgKykWUiR7mPeWxvtj2r6yf+D8NcY MlCT16p+pawSJdSdangqU0dacCuGAAU= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 20CA01391E; Wed, 14 Jun 2023 07:35:14 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id wH2bBrJtiWQyHwAAMHmgww (envelope-from ); Wed, 14 Jun 2023 07:35:14 +0000 From: Juergen Gross To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Juergen Gross , Boris Ostrovsky , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , xen-devel@lists.xenproject.org, Arnd Bergmann Subject: [PATCH v4 1/2] x86/xen: add prototypes for paravirt mmu functions Date: Wed, 14 Jun 2023 09:35:00 +0200 Message-Id: <20230614073501.10101-2-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230614073501.10101-1-jgross@suse.com> References: <20230614073501.10101-1-jgross@suse.com> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768663623182385233?= X-GMAIL-MSGID: =?utf-8?q?1768663623182385233?= The paravirt MMU functions called via the PV_CALLEE_SAVE_REGS_THUNK() macro can't be defined to be static, as the macro is generating a function via asm() statement calling the paravirt MMU function. In order to avoid warnings when specifying "-Wmissing-prototypes" for the build, add local prototypes (there should never be any external caller of those functions). Reported-by: Arnd Bergmann Signed-off-by: Juergen Gross --- arch/x86/xen/mmu_pv.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c index b3b8d289b9ab..e0a975165de7 100644 --- a/arch/x86/xen/mmu_pv.c +++ b/arch/x86/xen/mmu_pv.c @@ -86,6 +86,22 @@ #include "mmu.h" #include "debugfs.h" +/* + * Prototypes for functions called via PV_CALLEE_SAVE_REGS_THUNK() in order + * to avoid warnings with "-Wmissing-prototypes". + */ +pteval_t xen_pte_val(pte_t pte); +pgdval_t xen_pgd_val(pgd_t pgd); +pmdval_t xen_pmd_val(pmd_t pmd); +pudval_t xen_pud_val(pud_t pud); +p4dval_t xen_p4d_val(p4d_t p4d); +pte_t xen_make_pte(pteval_t pte); +pgd_t xen_make_pgd(pgdval_t pgd); +pmd_t xen_make_pmd(pmdval_t pmd); +pud_t xen_make_pud(pudval_t pud); +p4d_t xen_make_p4d(p4dval_t p4d); +pte_t xen_make_pte_init(pteval_t pte); + #ifdef CONFIG_X86_VSYSCALL_EMULATION /* l3 pud for userspace vsyscall mapping */ static pud_t level3_user_vsyscall[PTRS_PER_PUD] __page_aligned_bss;