forked from Minki/linux
d2eea68e7d
One of the nice ideas behind paravirt is that CONFIG_XEN=y can be included in a standard configuration and be no worse for native booting than as a Xen guest. The glibc feature that supports the vDSO "nosegneg" note is designed specifically to make this easy. You just have to flip one bit at boot time. This patch makes Xen flip the bit, so a CONFIG_XEN=y kernel on bare hardware does not make glibc use the less-optimized library builds. Signed-off-by: Roland McGrath <roland@redhat.com> Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 lines
211 B
C
5 lines
211 B
C
/* Bit used for the pseudo-hwcap for non-negative segments. We use
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bit 1 to avoid bugs in some versions of glibc when bit 0 is
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used; the choice is otherwise arbitrary. */
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#define VDSO_NOTE_NONEGSEG_BIT 1
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