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| author | Richard Weinberger <richard@nod.at> | 2011-07-25 17:12:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-25 20:57:13 -0700 |
| commit | f1c2bb8b9964ed31de988910f8b1cfb586d30091 (patch) | |
| tree | ccf58acd47dbf659dca3087b7ebf2704ffd14aba /arch/um/sys-x86_64/Makefile | |
| parent | fc9a00187ba1300a0baae8e613cc62598e1a7de7 (diff) | |
| download | op-kernel-dev-f1c2bb8b9964ed31de988910f8b1cfb586d30091.zip op-kernel-dev-f1c2bb8b9964ed31de988910f8b1cfb586d30091.tar.gz | |
um: implement a x86_64 vDSO
Until now UML had no x86_64 vDSO. So glibc always used the vsyscall page
for gettimeday() and friends. Calls to gettimeday() returned falsely the
host time and confused some programs.
This patch adds a vDSO which turns all __vdso_* calls into a system call
so that UML can trap them.
As glibc still uses the vsyscall page for static binaries this patch
improves the situation only for dynamic binaries.
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/sys-x86_64/Makefile')
| -rw-r--r-- | arch/um/sys-x86_64/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile index bf2fe83..bd4d1d3 100644 --- a/arch/um/sys-x86_64/Makefile +++ b/arch/um/sys-x86_64/Makefile @@ -8,6 +8,8 @@ obj-y = bug.o bugs.o delay.o fault.o ldt.o ptrace.o ptrace_user.o mem.o \ setjmp.o signal.o stub.o stub_segv.o syscalls.o syscall_table.o \ sysrq.o ksyms.o tls.o +obj-y += vdso/ + subarch-obj-y = lib/csum-partial_64.o lib/memcpy_64.o lib/thunk_64.o \ lib/rwsem.o subarch-obj-$(CONFIG_MODULES) += kernel/module.o |
