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=-6.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 291E4C2D0EF for ; Tue, 31 Mar 2020 09:22:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F241C2145D for ; Tue, 31 Mar 2020 09:22:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585646565; bh=PVwq12ikNVjYzL7dLyszQb2N26rWLUYHtiw4e8tlS6c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vgina1B6oFuFg9sDc9kuk2F/Deu6wOdQ0+P79bBGE3zoYrlCoVXMowPF/aLnuVwik Tm3PjvOCTAv1ej58zydClN8P9bWrUkKT5rbUlUHgEqvwnpHwwEZC+nepkpwPOy9O26 L79HDszBjCNMewTH+iTQqfOwCu7yUBrocB9QfbRI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731032AbgCaJGV (ORCPT ); Tue, 31 Mar 2020 05:06:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:47754 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731130AbgCaJGV (ORCPT ); Tue, 31 Mar 2020 05:06:21 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ED5FC20787; Tue, 31 Mar 2020 09:06:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585645580; bh=PVwq12ikNVjYzL7dLyszQb2N26rWLUYHtiw4e8tlS6c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H3W45oXiRBVJVafM33SzNnXkdMF+eaaEGIRZhbq0ndoJKXQPsgRfdxt3pflWJWiWh vll/S4HVgH3seR25NnvpIsx4/ToRi/OsJVL9lO88Nf2blfb0hSkn8IEet9IjBksG9b Up4QqhfYBnhVw2mQQEhAumci0UODDS/sgBILZH8Q= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Randy Dunlap , Borislav Petkov , Tom Lendacky Subject: [PATCH 5.5 097/170] x86/ioremap: Fix CONFIG_EFI=n build Date: Tue, 31 Mar 2020 10:58:31 +0200 Message-Id: <20200331085434.553399232@linuxfoundation.org> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200331085423.990189598@linuxfoundation.org> References: <20200331085423.990189598@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Borislav Petkov commit 870b4333a62e45b0b2000d14b301b7b8b8cad9da upstream. In order to use efi_mem_type(), one needs CONFIG_EFI enabled. Otherwise that function is undefined. Use IS_ENABLED() to check and avoid the ifdeffery as the compiler optimizes away the following unreachable code then. Fixes: 985e537a4082 ("x86/ioremap: Map EFI runtime services data as encrypted for SEV") Reported-by: Randy Dunlap Signed-off-by: Borislav Petkov Tested-by: Randy Dunlap Cc: Tom Lendacky Cc: Link: https://lkml.kernel.org/r/7561e981-0d9b-d62c-0ef2-ce6007aff1ab@infradead.org Signed-off-by: Greg Kroah-Hartman --- arch/x86/mm/ioremap.c | 3 +++ 1 file changed, 3 insertions(+) --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -115,6 +115,9 @@ static void __ioremap_check_other(resour if (!sev_active()) return; + if (!IS_ENABLED(CONFIG_EFI)) + return; + if (efi_mem_type(addr) == EFI_RUNTIME_SERVICES_DATA) desc->flags |= IORES_MAP_ENCRYPTED; }