Currently the libxl driver claims support for Xen >= 4.4, but Xen 4.4 and 4.5 are no longer supported upstream. Let's increase the minimum supported version to 4.6. Since Xen 4.6 contains a pkgconfig file, drop the now unused code that falls back to using LIBVIRT_CHECK_LIB in the absence of pkgconfig file. Signed-off-by: Jim Fehlig <jfehlig(a)suse.com&gt; --- docs/drvxen.html.in | 2 +- m4/virt-driver-libxl.m4 | 22 +--------------------- 2 files changed, 2 insertions(+), 22 deletions(-) diff --git a/docs/drvxen.html.in b/docs/drvxen.html.in index 2e45e09527..ff67291ec6 100644 --- a/docs/drvxen.html.in +++ b/docs/drvxen.html.in @@ -8,7 +8,7 @@ <p> The libvirt libxl driver provides the ability to manage virtual - machines on any Xen release from 4.4.0 onwards. + machines on any Xen release from 4.6.0 onwards. </p> <h2><a id="project">Project Links</a></h2> diff --git a/m4/virt-driver-libxl.m4 b/m4/virt-driver-libxl.m4 index 90338eb306..fa51afd2f8 100644 --- a/m4/virt-driver-libxl.m4 +++ b/m4/virt-driver-libxl.m4 @@ -29,33 +29,13 @@ AC_DEFUN([LIBVIRT_DRIVER_CHECK_LIBXL], [ LIBXL_API_VERSION="-DLIBXL_API_VERSION=0x040400" dnl search for libxl, aka libxenlight - dnl Xen > 4.5 introduced a pkgconfig file, check for it first old_with_libxl="$with_libxl" - LIBVIRT_CHECK_PKG([LIBXL], [xenlight], [4.4.0], [true]) + LIBVIRT_CHECK_PKG([LIBXL], [xenlight], [4.6.0], [true]) if test "x$with_libxl" = "xyes" ; then LIBXL_FIRMWARE_DIR=$($PKG_CONFIG --variable xenfirmwaredir xenlight) LIBXL_EXECBIN_DIR=$($PKG_CONFIG --variable libexec_bin xenlight) fi - dnl pkgconfig file not found, fallback to lib probe - if test "x$with_libxl" = "xno" ; then - with_libxl="$old_with_libxl" - - dnl LIBXL_API_VERSION 4.4.0 introduced a new parameter to - dnl libxl_domain_create_restore for specifying restore parameters. - dnl The libxl driver will make use of this new parameter for specifying - dnl the Xen migration stream version. Specify LIBXL_API_VERSION to trigger - dnl an error if there is too old xenlight - libxlold_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $LIBXL_API_VERSION" - LIBVIRT_CHECK_LIB([LIBXL], [xenlight], [libxl_ctx_alloc], [libxl.h], [fail="1"]) - CFLAGS="$libxlold_CFLAGS" - - if test $fail = 1; then - AC_MSG_ERROR([You must install the libxl Library from Xen >= 4.4 to compile libxenlight driver with -lxl]) - fi - fi - if test "$with_libxl" = "yes"; then old_LIBS="$LIBS" old_CFLAGS="$CFLAGS" -- 2.18.0

On 09/11/2018 01:13 AM, Jim Fehlig wrote: Should this be changed to 4.6 then? Looking into libxl.h only 4.{2,3,4,5} are supported. However, looking further into the header file I can see checks like this: #if defined(LIBXL_API_VERSION) && LIBXL_API_VERSION < 0x040800 This ^^^ is now unused variable since you're removing it below. ACK Michal

On 09/11/2018 01:13 AM, Jim Fehlig wrote: Alternatively, we can have new section: <section title="Removed features"> Like we did for 4.5.0 and 4.3.0 releases. ACK Michal