Add a pair of configure options --{enable,disable}-libdaxctl to control
whether QEMU is compiled with libdaxctl [1]. Libdaxctl is a utility
library for managing the device dax subsystem.QEMU uses mmap(2) to maps vNVDIMM backends and aligns the mapping address to the page size (getpagesize(2)) by default. However, some types of backends may require an alignment different than the page size. The 'align' option is provided to memory-backend-file to allow users to specify the proper alignment. For device dax (e.g., /dev/dax0.0), the 'align' option needs to match the alignment requirement of the device dax, which can be fetched through the APIs of libdaxctl version 57 or up. [1] Libdaxctl is a part of ndctl project. The project's repository is: https://github.com/pmem/ndctl For more information about libdaxctl APIs, you can refer to the comments in source code of: pmem/ndctl/daxctl/lib/libdaxctl.c. Reviewed-by: Joao Martins <joao.m.mart...@oracle.com> Signed-off-by: Jingqi Liu <jingqi....@intel.com> --- configure | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/configure b/configure index e225a1e3ff..d2418084c1 100755 --- a/configure +++ b/configure @@ -509,6 +509,7 @@ libpmem="" default_devices="yes" plugins="no" fuzzing="no" +libdaxctl="" supported_cpu="no" supported_os="no" @@ -1601,6 +1602,10 @@ for opt do ;; --gdb=*) gdb_bin="$optarg" ;; + --enable-libdaxctl) libdaxctl=yes + ;; + --disable-libdaxctl) libdaxctl=no + ;; *) echo "ERROR: unknown option $opt" echo "Try '$0 --help' for more information" @@ -1894,6 +1899,7 @@ disabled with --disable-FEATURE, default is enabled if available: debug-mutex mutex debugging support libpmem libpmem support xkbcommon xkbcommon support + libdaxctl libdaxctl support NOTE: The object files are built at the place where configure is launched EOF @@ -6190,6 +6196,24 @@ if test "$libpmem" != "no"; then fi fi +########################################## +# check for libdaxctl + +if test "$libdaxctl" != "no"; then + if $pkg_config --atleast-version=57 "libdaxctl"; then + libdaxctl="yes" + libdaxctl_libs=$($pkg_config --libs libdaxctl) + libdaxctl_cflags=$($pkg_config --cflags libdaxctl) + libs_softmmu="$libs_softmmu $libdaxctl_libs" + QEMU_CFLAGS="$QEMU_CFLAGS $libdaxctl_cflags" + else + if test "$libdaxctl" = "yes" ; then + feature_not_found "libdaxctl" "Install libdaxctl" + fi + libdaxctl="no" + fi +fi + ########################################## # check for slirp @@ -6767,6 +6791,7 @@ echo "parallels support $parallels" echo "sheepdog support $sheepdog" echo "capstone $capstone" echo "libpmem support $libpmem" +echo "libdaxctl support $libdaxctl" echo "libudev $libudev" echo "default devices $default_devices" echo "plugin support $plugins" @@ -7590,6 +7615,10 @@ if test "$libpmem" = "yes" ; then echo "CONFIG_LIBPMEM=y" >> $config_host_mak fi +if test "$libdaxctl" = "yes" ; then + echo "CONFIG_LIBDAXCTL=y" >> $config_host_mak +fi + if test "$bochs" = "yes" ; then echo "CONFIG_BOCHS=y" >> $config_host_mak fi -- 2.17.1
