The patch titled
lguest: ld.so on FC7 is mmap'ing shared libraries right in over guest memory
has been added to the -mm tree. Its filename is
lguest-ldso-on-fc7-is-mmaping-shared-libraries-right-in-over-guest-memory.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: lguest: ld.so on FC7 is mmap'ing shared libraries right in over guest memory
From: Ronald G. Minnich <rminnich@xxxxxxxxx>
[ 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
[Arjan said:
this description is incorrect; it's not an ld.so change that causes the
low mapping.
It's a command line option to the prelink program (which is in most
distributions) that makes it use the entire address space, not just the
higher bits...."]
Signed-off-by: Ronald G. Minnich <rminnich@xxxxxxxxx>
Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/lguest/Makefile | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
diff -puN Documentation/lguest/Makefile~lguest-ldso-on-fc7-is-mmaping-shared-libraries-right-in-over-guest-memory Documentation/lguest/Makefile
--- a/Documentation/lguest/Makefile~lguest-ldso-on-fc7-is-mmaping-shared-libraries-right-in-over-guest-memory
+++ a/Documentation/lguest/Makefile
@@ -13,7 +13,9 @@ LGUEST_GUEST_TOP := ($(CONFIG_PAGE_OFFSE
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
_
Patches currently in -mm which might be from rminnich@xxxxxxxxx are
lguest-ldso-on-fc7-is-mmaping-shared-libraries-right-in-over-guest-memory.patch
-
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