From nobody Mon Feb 9 13:37:26 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=citrix.com ARC-Seal: i=1; a=rsa-sha256; t=1587485596; cv=none; d=zohomail.com; s=zohoarc; b=msSr7SW3ANlBjhXjfx8ENXE7LhFerT9Wa7NqMFN1kAoNX+soRs/nUmWFglkET6mRt8hh3WRSBbSHT4F8zc9FFi1mpKKIXFGOPT3BQtPoADTI4MQGTgydMtsLzw6kZ2LOOI19PIkXYhEJIYAxY/GsK4LpeKAKmOCRAWx2wlXMxMg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1587485596; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=cJNKL+aUEaeutueTmDk9sN7DaRg7C/qaHvgzbzFlaOY=; b=bmGIxiwwfZLQSCg93OjowlmXkWFCjBm1yupbaeV7bZlNln/yg+xFZbym3eE7f62O7JBkAj988V3TRxB/SJ4Jj1t12T9IuMWOLReGzGh0ryWyADhE1kG2J7I35IM9/nm0f6dkKbHBllejIVG9FmjHpf5xAJ37Q2z2UhAo6rd5nQI= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1587485596144453.09131344691286; Tue, 21 Apr 2020 09:13:16 -0700 (PDT) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1jQvW9-0005qL-9V; Tue, 21 Apr 2020 16:13:01 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1jQvW7-0005oV-Hd for xen-devel@lists.xenproject.org; Tue, 21 Apr 2020 16:12:59 +0000 Received: from esa3.hc3370-68.iphmx.com (unknown [216.71.145.155]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id f1d545e9-83ea-11ea-9160-12813bfff9fa; Tue, 21 Apr 2020 16:12:49 +0000 (UTC) X-Inumbo-ID: f1d545e9-83ea-11ea-9160-12813bfff9fa DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1587485570; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CYI3fXntoKuTBeVkyy91OK1emIZvOATrp8gvGepHy7M=; b=PD7zjurtAAs+MC42N1bqh/fC5Th2gxBbA2KzKD/woz588YbCbUOj2ORM iB4VibyGe8FSpwk5HV9wpt7Kf9Xk2XJD6UdpmEhdhzVf62ADO34/w+4tv mSUFSALFbxaqWs4Jq4al9ZX/q40sbpDjnITKELi9fxpnadn4Cy/V37wgA g=; Authentication-Results: esa3.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none; spf=None smtp.pra=anthony.perard@citrix.com; spf=Pass smtp.mailfrom=anthony.perard@citrix.com; spf=None smtp.helo=postmaster@mail.citrix.com Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Received-SPF: None (esa3.hc3370-68.iphmx.com: no sender authenticity information available from domain of anthony.perard@citrix.com) identity=pra; client-ip=162.221.158.21; receiver=esa3.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="anthony.perard@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa3.hc3370-68.iphmx.com: domain of anthony.perard@citrix.com designates 162.221.158.21 as permitted sender) identity=mailfrom; client-ip=162.221.158.21; receiver=esa3.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="anthony.perard@citrix.com"; x-conformance=sidf_compatible; x-record-type="v=spf1"; x-record-text="v=spf1 ip4:209.167.231.154 ip4:178.63.86.133 ip4:195.66.111.40/30 ip4:85.115.9.32/28 ip4:199.102.83.4 ip4:192.28.146.160 ip4:192.28.146.107 ip4:216.52.6.88 ip4:216.52.6.188 ip4:162.221.158.21 ip4:162.221.156.83 ip4:168.245.78.127 ~all" Received-SPF: None (esa3.hc3370-68.iphmx.com: no sender authenticity information available from domain of postmaster@mail.citrix.com) identity=helo; client-ip=162.221.158.21; receiver=esa3.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: vqf/pjQitzpEos5dEuzl3VApKVPOredEl9GVRmphC3CN+HN+RqMhN2quBTVhZpeHoA9sVkXlKP AQ0EP+69wNmpk55q9nNxngpJFt6RsaV6dtcBLX8tS1fxZHe5K1oAWC0+z7Q9RoW/4aGQwn2xZA zcEh4XaqeQLzeUn6+doLT+n9ju7UQsrBtdOEMGIL2TQwfMRzY9+jcISypAJbqvCF8eYOeQSlKv RDGm6lSQsvYdWINdYdI8vPt+2NaC+tvUxR26L8VG5u1U857J4f7d2Uf7d9GYtN2dYoh3M1780n XqE= X-SBRS: 2.7 X-MesageID: 15998908 X-Ironport-Server: esa3.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.72,410,1580792400"; d="scan'208";a="15998908" From: Anthony PERARD To: Subject: [XEN PATCH v5 14/16] build: use if_changed to build mm/*/guest_%.o Date: Tue, 21 Apr 2020 17:12:06 +0100 Message-ID: <20200421161208.2429539-15-anthony.perard@citrix.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200421161208.2429539-1-anthony.perard@citrix.com> References: <20200421161208.2429539-1-anthony.perard@citrix.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Wei Liu , Andrew Cooper , Tim Deegan , George Dunlap , Jan Beulich , Anthony PERARD , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Use if_changed for building all guest_%.o objects, and make use of command that already exist. The current command only runs `CC`, but the runes to build every other object in Xen also runs `objcopy` (when CONFIG_ENFORCE_UNIQUE_SYMBOLS=3Dy) which modify the file symbol. But with patch "xen,symbols: rework file symbols selection", ./symbols should still select the file symbols directive intended to be used for guest_%.o objects. The goal here is to reduce the number of commands written in makefiles. Signed-off-by: Anthony PERARD Reviewed-by: Jan Beulich --- Notes: v5: - reword commit message =20 v4: - remove the introduction of Kbuild's CFLAGS_$@ and simply use make's per-target variable customization. Mostly to avoid using $(eval ) which might not work as expected on make 3.80. xen/arch/x86/mm/Makefile | 14 ++++++++------ xen/arch/x86/mm/hap/Makefile | 15 +++++++++------ xen/arch/x86/mm/shadow/Makefile | 14 ++++++++------ 3 files changed, 25 insertions(+), 18 deletions(-) diff --git a/xen/arch/x86/mm/Makefile b/xen/arch/x86/mm/Makefile index a2431fde6bb4..a66a57314489 100644 --- a/xen/arch/x86/mm/Makefile +++ b/xen/arch/x86/mm/Makefile @@ -11,11 +11,13 @@ obj-y +=3D p2m.o p2m-pt.o obj-$(CONFIG_HVM) +=3D p2m-ept.o p2m-pod.o obj-y +=3D paging.o =20 -guest_walk_%.o: guest_walk.c Makefile - $(CC) $(c_flags) -DGUEST_PAGING_LEVELS=3D$* -c $< -o $@ +guest_walk_%.o guest_walk_%.i guest_walk_%.s: CFLAGS-y +=3D -DGUEST_PAGING= _LEVELS=3D$* =20 -guest_walk_%.i: guest_walk.c Makefile - $(CPP) $(filter-out -Wa$(comma)%,$(c_flags)) -DGUEST_PAGING_LEVELS=3D$* -= c $< -o $@ +guest_walk_%.o: guest_walk.c FORCE + $(call if_changed_rule,cc_o_c) =20 -guest_walk_%.s: guest_walk.c Makefile - $(CC) $(filter-out -Wa$(comma)%,$(c_flags)) -DGUEST_PAGING_LEVELS=3D$* -S= $< -o $@ +guest_walk_%.i: guest_walk.c FORCE + $(call if_changed,cpp_i_c) + +guest_walk_%.s: guest_walk.c FORCE + $(call if_changed,cc_s_c) diff --git a/xen/arch/x86/mm/hap/Makefile b/xen/arch/x86/mm/hap/Makefile index 22e7ad54bd33..34720b2fbe2e 100644 --- a/xen/arch/x86/mm/hap/Makefile +++ b/xen/arch/x86/mm/hap/Makefile @@ -5,11 +5,14 @@ obj-y +=3D guest_walk_4level.o obj-y +=3D nested_hap.o obj-y +=3D nested_ept.o =20 -guest_walk_%level.o: guest_walk.c Makefile - $(CC) $(c_flags) -DGUEST_PAGING_LEVELS=3D$* -c $< -o $@ +guest_walk_%level.o guest_walk_%level.i guest_walk_%level.s: \ + CFLAGS-y +=3D -DGUEST_PAGING_LEVELS=3D$* =20 -guest_walk_%level.i: guest_walk.c Makefile - $(CPP) $(filter-out -Wa$(comma)%,$(c_flags)) -DGUEST_PAGING_LEVELS=3D$* -= c $< -o $@ +guest_walk_%level.o: guest_walk.c FORCE + $(call if_changed_rule,cc_o_c) =20 -guest_walk_%level.s: guest_walk.c Makefile - $(CC) $(filter-out -Wa$(comma)%,$(c_flags)) -DGUEST_PAGING_LEVELS=3D$* -S= $< -o $@ +guest_walk_%level.i: guest_walk.c FORCE + $(call if_changed,cpp_i_c) + +guest_walk_%level.s: guest_walk.c FORCE + $(call if_changed,cc_s_c) diff --git a/xen/arch/x86/mm/shadow/Makefile b/xen/arch/x86/mm/shadow/Makef= ile index 23d3ff10802c..e00f9cb1aaba 100644 --- a/xen/arch/x86/mm/shadow/Makefile +++ b/xen/arch/x86/mm/shadow/Makefile @@ -6,11 +6,13 @@ else obj-y +=3D none.o endif =20 -guest_%.o: multi.c Makefile - $(CC) $(c_flags) -DGUEST_PAGING_LEVELS=3D$* -c $< -o $@ +guest_%.o guest_%.i guest_%.s: CFLAGS-y +=3D -DGUEST_PAGING_LEVELS=3D$* =20 -guest_%.i: multi.c Makefile - $(CPP) $(filter-out -Wa$(comma)%,$(c_flags)) -DGUEST_PAGING_LEVELS=3D$* -= c $< -o $@ +guest_%.o: multi.c FORCE + $(call if_changed_rule,cc_o_c) =20 -guest_%.s: multi.c Makefile - $(CC) $(filter-out -Wa$(comma)%,$(c_flags)) -DGUEST_PAGING_LEVELS=3D$* -S= $< -o $@ +guest_%.i: multi.c FORCE + $(call if_changed,cpp_i_c) + +guest_%.s: multi.c FORCE + $(call if_changed,cc_s_c) --=20 Anthony PERARD