configure, meson: move membarrier test to meson

The test is a bit different from the others, in that it does not run
if $membarrier is empty.  For meson, the default can simply be disabled;
if one day we will toggle the default, no change is needed in meson.build.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 40 deletions

diff --git a/configure b/configure
index a6a577277f..c49797012d 100755
--- a/configure
+++ b/configure
@@ -290,7 +290,6 @@ EXTRA_CXXFLAGS=""
 EXTRA_LDFLAGS=""
 
 xen_ctrl_version="$default_feature"
-membarrier="$default_feature"
 vhost_kernel="$default_feature"
 vhost_net="$default_feature"
 vhost_crypto="$default_feature"
@@ -967,10 +966,6 @@ for opt do
   ;;
   --enable-fdt=*) fdt="$optarg"
   ;;
-  --disable-membarrier) membarrier="no"
-  ;;
-  --enable-membarrier) membarrier="yes"
-  ;;
   --with-pkgversion=*) pkgversion="$optarg"
   ;;
   --with-coroutine=*) coroutine="$optarg"
@@ -1382,7 +1377,6 @@ cat << EOF
   lto             Enable Link-Time Optimization.
   safe-stack      SafeStack Stack Smash Protection. Depends on
                   clang/llvm >= 3.7 and requires coroutine backend ucontext.
-  membarrier      membarrier system call (for Linux 4.14+ or Windows)
   rdma            Enable RDMA-based migration
   pvrdma          Enable PVRDMA support
   vhost-net       vhost-net kernel acceleration support
@@ -2824,37 +2818,6 @@ if test "$fortify_source" != "no"; then
 fi
 
 ##########################################
-# check for usable membarrier system call
-if test "$membarrier" = "yes"; then
-    have_membarrier=no
-    if test "$mingw32" = "yes" ; then
-        have_membarrier=yes
-    elif test "$linux" = "yes" ; then
-        cat > $TMPC << EOF
-    #include <linux/membarrier.h>
-    #include <sys/syscall.h>
-    #include <unistd.h>
-    #include <stdlib.h>
-    int main(void) {
-        syscall(__NR_membarrier, MEMBARRIER_CMD_QUERY, 0);
-        syscall(__NR_membarrier, MEMBARRIER_CMD_SHARED, 0);
-	exit(0);
-    }
-EOF
-        if compile_prog "" "" ; then
-            have_membarrier=yes
-        fi
-    fi
-    if test "$have_membarrier" = "no"; then
-      feature_not_found "membarrier" "membarrier system call not available"
-    fi
-else
-    # Do not enable it by default even for Mingw32, because it doesn't
-    # work on Wine.
-    membarrier=no
-fi
-
-##########################################
 # check for usable AF_ALG environment
 have_afalg=no
 cat > $TMPC << EOF
@@ -3315,9 +3278,6 @@ fi
 if test "$vhost_user_fs" = "yes" ; then
   echo "CONFIG_VHOST_USER_FS=y" >> $config_host_mak
 fi
-if test "$membarrier" = "yes" ; then
-  echo "CONFIG_MEMBARRIER=y" >> $config_host_mak
-fi
 if test "$tcg" = "enabled" -a "$tcg_interpreter" = "true" ; then
   echo "CONFIG_TCG_INTERPRETER=y" >> $config_host_mak
 fi