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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2019-05-30 08:04:06 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2019-08-05 16:38:22 -0300
commit5e855c8954014bca7b0d6f07312ec09553695ffd (patch)
tree92f5a75cdb6c24563b8f02bf9497276c6968b0f5 /sysdeps/unix/sysv/linux/s390/s390-32
parent27a0914e4586b06375b20731fa6515fe30334373 (diff)
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s390: Enable VDSO for static linking
Although s390 only enables vDSO for dynamically linked elf binaries
(arch/s390/kernel/vdso.c:217), there is no indication in the code or
associated commit message for why not enable it for statically linked
binaries as well.  To double check, I rebuilt a kernel with the
check removed and the vDSO does work for static build for supplied
symbols.

Checked on s390x-linux-gnu and s390-linux-gnu.

	[BZ #19767]
	* sysdeps/unix/sysv/linux/s390/init-first.c: Remove #ifdef SHARED.
	* sysdeps/unix/sysv/linux/s390/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
	(ALWAYS_USE_VSYSCALL): Define.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
	(ALWAYS_USE_VSYSCALL): Likewise.
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/s390-32')
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
index 640fb52de1..47d1c5cdb2 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
@@ -19,6 +19,9 @@
 #ifndef _LINUX_S390_SYSDEP_H
 #define _LINUX_S390_SYSDEP_H
 
+/* Always enable vsyscalls on s390-32.  */
+#define ALWAYS_USE_VSYSCALL 1
+
 #include <sysdeps/s390/s390-32/sysdep.h>
 #include <sysdeps/unix/sysdep.h>
 #include <sysdeps/unix/sysv/linux/sysdep.h>