Remove nosegneg 32-bit Xen PV support libraries (#1482027)

glibc.spec

@@ -75,18 +75,6 @@
 # disabled it anyway as a conservative measure.
 %define lock_elision_arches s390 s390x
 ##############################################################################
-# We build a special package for Xen that includes TLS support with
-# no negative segment offsets for use with Xen guests. This is
-# purely an optimization for increased performance on those arches.
-%define xenarches i686 athlon
-%ifarch %{xenarches}
-%define buildxen 1
-%define xenpackage 0
-%else
-%define buildxen 0
-%define xenpackage 0
-%endif
-##############################################################################
 # We support only 64-bit POWER with the following runtimes:
 # 64-bit BE:
 # - Power 620 / 970 ISA (default runtime, compatile with POWER4 and newer)
@@ -415,23 +403,6 @@ contains the most important sets of shared libraries: the standard C
 library and the standard math library. Without these two libraries, a
 Linux system will not function.
 
-##############################################################################
-# glibc "xen" sub-package
-##############################################################################
-%if %{xenpackage}
-%package xen
-Summary: The GNU libc libraries (optimized for running under Xen)
-Group: System Environment/Libraries
-Requires: glibc = %{version}-%{release}, glibc-utils = %{version}-%{release}
-
-%description xen
-The standard glibc package is optimized for native kernels and does not
-perform as well under the Xen hypervisor.  This package provides alternative
-library binaries that will be selected instead when running under Xen.
-
-Install glibc-xen if you might run your system under the Xen hypervisor.
-%endif
-
 ######################################################################
 # crypt subpackages
 ######################################################################
@@ -1030,14 +1001,6 @@ build()
 ##############################################################################
 build
 
-##############################################################################
-# Build glibc for xen:
-# If we support xen build glibc again for xen support.
-##############################################################################
-%if %{buildxen}
-build nosegneg -mno-tls-direct-seg-refs
-%endif
-
 ##############################################################################
 # Build glibc for power6:
 # If we support building a power6 alternate runtime then built glibc again for
@@ -1204,19 +1167,6 @@ unset libcrypt libcrypt_found
 # This symbolic link will be generated by ldconfig.
 rm -f ${RPM_BUILD_ROOT}/%{_lib}/libcrypt.so.1
 
-##############################################################################
-# Install the xen build files.
-##############################################################################
-%if %{buildxen}
-%define nosegneg_subdir_base i686
-%define nosegneg_subdir i686/nosegneg
-%define nosegneg_subdir_up ../..
-pushd build-%{target}-nosegneg
-destdir=$RPM_BUILD_ROOT/%{_lib}
-install_different "$destdir" "%{nosegneg_subdir}" "%{nosegneg_subdir_up}"
-popd
-%endif # %{buildxen}
-
 ##############################################################################
 # Install the power6 build files.
 ##############################################################################
@@ -1419,8 +1369,6 @@ rm -f $RPM_BUILD_ROOT%{_prefix}/lib/debug%{_libdir}/*_p.a
 #	- Contains the list of files for the headers subpackage.
 # * static.filelist
 #	- Contains the list of files for the static subpackage.
-# * nosegneg.filelist
-#	- Contains the list of files for the xen subpackage.
 # * libcrypt.filelist, libcrypt-nss.filelist
 #       - Contains the list of files for the crypt-related subpackages
 # * nss_db.filelist, nss_nis.filelist, nss_hesiod.filelist
@@ -1554,18 +1502,6 @@ sed -i -e '\|%{_prefix}/bin|d' \
        -e '\|%{_prefix}/sbin/[^gi]|d' \
        -e '\|%{_prefix}/share|d' rpm.filelist
 
-##############################################################################
-# Build the xen package file list (nosegneg.filelist)
-##############################################################################
-truncate -s 0 nosegneg.filelist
-%if %{xenpackage}
-grep '/%{_lib}/%{nosegneg_subdir}' < rpm.filelist >> nosegneg.filelist
-sed -i -e '\|/%{_lib}/%{nosegneg_subdir}|d' rpm.filelist
-# TODO: There are files in the nosegneg list which should be in the devel
-#	pacakge, but we leave them instead in the xen subpackage. We may
-#	wish to clean that up at some point.
-%endif
-
 # Add the binary to build locales to the common subpackage.
 echo '%{_prefix}/sbin/build-locale-archive' >> common.filelist
 
@@ -1749,10 +1685,9 @@ find_debuginfo_args="$find_debuginfo_args \
 %endif
 	-l rpm.filelist \
 %if %{with benchtests}
-	-l nosegneg.filelist -l benchtests.filelist"
+	-l benchtests.filelist
-%else
-	-l nosegneg.filelist"
 %endif
+	"
 %endif
 eval /usr/lib/rpm/find-debuginfo.sh \
 	"$find_debuginfo_args" \
@@ -1953,16 +1888,6 @@ pushd build-%{target}
 run_tests
 popd
 
-%if %{buildxen}
-echo ====================TESTING -mno-tls-direct-seg-refs=============
-##############################################################################
-# - Test the xen runtimes (nosegneg).
-##############################################################################
-pushd build-%{target}-nosegneg
-run_tests
-popd
-%endif
-
 %if %{buildpower6}
 echo ====================TESTING -mcpu=power6=============
 ##############################################################################
@@ -2102,11 +2027,6 @@ if test $1 = 0; then
 fi
 %systemd_postun_with_restart nscd.service
 
-%if %{xenpackage}
-%post xen -p /sbin/ldconfig
-%postun xen -p /sbin/ldconfig
-%endif
-
 %clean
 rm -rf "$RPM_BUILD_ROOT"
 rm -f *.filelist*
@@ -2114,10 +2034,6 @@ rm -f *.filelist*
 %files -f rpm.filelist
 %defattr(-,root,root)
 %dir %{_prefix}/%{_lib}/audit
-%if %{buildxen} && !%{xenpackage}
-%dir /%{_lib}/%{nosegneg_subdir_base}
-%dir /%{_lib}/%{nosegneg_subdir}
-%endif
 %if %{buildpower6}
 %dir /%{_lib}/power6
 %dir /%{_lib}/power6x
@@ -2149,13 +2065,6 @@ rm -f *.filelist*
 %{!?_licensedir:%global license %%doc}
 %license COPYING COPYING.LIB LICENSES
 
-%if %{xenpackage}
-%files -f nosegneg.filelist xen
-%defattr(-,root,root)
-%dir /%{_lib}/%{nosegneg_subdir_base}
-%dir /%{_lib}/%{nosegneg_subdir}
-%endif
-
 %ifnarch %{auxarches}
 %files -f common.filelist common
 %defattr(-,root,root)

glibc_post_upgrade.c

@@ -74,7 +74,15 @@ main (void)
   off_t base;
   ssize_t ret;
 #ifdef __i386__
-  const char *remove_dirs[] = { "/lib/tls", "/lib/i686", "/lib/tls/i486", "/lib/tls/i586", "/lib/tls/i686" };
+  const char *remove_dirs[] =
+    {
+      "/lib/tls",
+      "/lib/i686",
+      "/lib/tls/i486",
+      "/lib/tls/i586",
+      "/lib/tls/i686",
+      "/lib/i686/nosegneg",
+    };
 #else
 #ifndef LIBTLS
 #define LIBTLS "/lib/tls"