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| author | Ronald G. Minnich <rminnich@gmail.com> | 2007-08-09 21:07:24 +1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-09 08:14:56 -0700 |
| commit | e3bcf5e2785aa49f75f36a8d27d601891a7ff12b (patch) | |
| tree | 8a79cd195751b325e4972ef1b53ff2cc5a9eb5fe /Documentation/lguest | |
| parent | 0d027c01cd36b8cff727c78d2e40d334ba9895a8 (diff) | |
| download | lwn-e3bcf5e2785aa49f75f36a8d27d601891a7ff12b.tar.gz lwn-e3bcf5e2785aa49f75f36a8d27d601891a7ff12b.zip | |
lguest: avoid shared libraries mapped over guest memory
Some versions of ld.so mmap the shared libraries right in over guest
memory, so compile lguest statically by default.
[ FC7 maps shared libraries very low, where the launcher maps guest's
physical memory. Quick fix is to link Launcher static, real fix is
for 2.6.24. ]
-static is a simple fix. I expect this problem will be more common than we
like, as different distro's make different "improvements" to ld.so
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/lguest')
| -rw-r--r-- | Documentation/lguest/Makefile | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/lguest/Makefile b/Documentation/lguest/Makefile index 31e794ef5f98..c0b7a4556390 100644 --- a/Documentation/lguest/Makefile +++ b/Documentation/lguest/Makefile @@ -13,7 +13,9 @@ LGUEST_GUEST_TOP := ($(CONFIG_PAGE_OFFSET) - 0x08000000) CFLAGS:=-Wall -Wmissing-declarations -Wmissing-prototypes -O3 -Wl,-T,lguest.lds LDLIBS:=-lz - +# Removing this works for some versions of ld.so (eg. Ubuntu Feisty) and +# not others (eg. FC7). +LDFLAGS+=-static all: lguest.lds lguest # The linker script on x86 is so complex the only way of creating one |