From nobody Tue Feb 10 02:48:54 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 152784078822911.53684603082013; Fri, 1 Jun 2018 01:13:08 -0700 (PDT) Received: from localhost ([::1]:48121 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fOfBL-0001oi-EM for importer@patchew.org; Fri, 01 Jun 2018 04:13:07 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40465) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fOf9Q-0000eV-UZ for qemu-devel@nongnu.org; Fri, 01 Jun 2018 04:11:10 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fOf9M-0000YP-Pk for qemu-devel@nongnu.org; Fri, 01 Jun 2018 04:11:08 -0400 Received: from mga18.intel.com ([134.134.136.126]:62486) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fOf9M-0000XH-Gq for qemu-devel@nongnu.org; Fri, 01 Jun 2018 04:11:04 -0400 Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Jun 2018 01:11:03 -0700 Received: from robinhe-hp.sh.intel.com ([10.239.192.205]) by orsmga008.jf.intel.com with ESMTP; 01 Jun 2018 01:10:58 -0700 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,465,1520924400"; d="scan'208";a="45935199" From: junyan.he@gmx.com To: qemu-devel@nongnu.org Date: Fri, 1 Jun 2018 16:10:26 +0800 Message-Id: <1527840629-18648-5-git-send-email-junyan.he@gmx.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1527840629-18648-1-git-send-email-junyan.he@gmx.com> References: <1527840629-18648-1-git-send-email-junyan.he@gmx.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.126 Subject: [Qemu-devel] [PATCH V6 4/7] configure: add libpmem support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Haozhong Zhang , xiaoguangrong.eric@gmail.com, crosthwaite.peter@gmail.com, mst@redhat.com, dgilbert@redhat.com, ehabkost@redhat.com, quintela@redhat.com, Junyan He , stefanha@redhat.com, pbonzini@redhat.com, imammedo@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Junyan He Add a pair of configure options --{enable,disable}-libpmem to control whether QEMU is compiled with PMDK libpmem [1]. QEMU may write to the host persistent memory (e.g. in vNVDIMM label emulation and live migration), so it must take the proper operations to ensure the persistence of its own writes. Depending on the CPU models and available instructions, the optimal operation can vary [2]. PMDK libpmem have already implemented those operations on multiple CPU models (x86 and ARM) and the logic to select the optimal ones, so QEMU can just use libpmem rather than re-implement them. [1] PMDK (formerly known as NMVL), https://github.com/pmem/pmdk/ [2] https://github.com/pmem/pmdk/blob/38bfa652721a37fd94c0130ce0e3f5d8baa3e= d40/src/libpmem/pmem.c#L33 Signed-off-by: Junyan He Signed-off-by: Haozhong Zhang Reviewed-by: Stefan Hajnoczi --- configure | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/configure b/configure index a6a4616..f44d669 100755 --- a/configure +++ b/configure @@ -456,6 +456,7 @@ jemalloc=3D"no" replication=3D"yes" vxhs=3D"" libxml2=3D"" +libpmem=3D"" =20 supported_cpu=3D"no" supported_os=3D"no" @@ -1381,6 +1382,10 @@ for opt do ;; --disable-git-update) git_update=3Dno ;; + --enable-libpmem) libpmem=3Dyes + ;; + --disable-libpmem) libpmem=3Dno + ;; *) echo "ERROR: unknown option $opt" echo "Try '$0 --help' for more information" @@ -1638,6 +1643,7 @@ disabled with --disable-FEATURE, default is enabled i= f available: crypto-afalg Linux AF_ALG crypto backend driver vhost-user vhost-user support capstone capstone disassembler support + libpmem libpmem support =20 NOTE: The object files are built at the place where configure is launched EOF @@ -5445,6 +5451,24 @@ EOF fi =20 ########################################## +# check for libpmem + +if test "$libpmem" !=3D "no"; then + if $pkg_config --exists "libpmem"; then + libpmem=3D"yes" + libpmem_libs=3D$($pkg_config --libs libpmem) + libpmem_cflags=3D$($pkg_config --cflags libpmem) + libs_softmmu=3D"$libs_softmmu $libpmem_libs" + QEMU_CFLAGS=3D"$QEMU_CFLAGS $libpmem_cflags" + else + if test "$libpmem" =3D "yes" ; then + feature_not_found "libpmem" "Install nvml or pmdk" + fi + libpmem=3D"no" + fi +fi + +########################################## # End of CC checks # After here, no more $cc or $ld runs =20 @@ -5907,6 +5931,7 @@ echo "avx2 optimization $avx2_opt" echo "replication support $replication" echo "VxHS block device $vxhs" echo "capstone $capstone" +echo "libpmem support $libpmem" =20 if test "$sdl_too_old" =3D "yes"; then echo "-> Your SDL version is too old - please upgrade to have SDL support" @@ -6651,6 +6676,10 @@ if test "$vxhs" =3D "yes" ; then echo "VXHS_LIBS=3D$vxhs_libs" >> $config_host_mak fi =20 +if test "$libpmem" =3D "yes" ; then + echo "CONFIG_LIBPMEM=3Dy" >> $config_host_mak +fi + if test "$tcg_interpreter" =3D "yes"; then QEMU_INCLUDES=3D"-iquote \$(SRC_PATH)/tcg/tci $QEMU_INCLUDES" elif test "$ARCH" =3D "sparc64" ; then --=20 2.7.4