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| author | Bodo Stroesser <bstroesser@fujitsu-siemens.com> | 2005-11-07 09:58:55 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-07 16:53:31 +0100 |
| commit | 858259cf7d1c443c836a2022b78cb281f0a9b95e (patch) | |
| tree | 7d306450dd0dfa907bbee1d95f96191c67f74232 /arch/um/scripts | |
| parent | [PATCH] uml: switch_mm fix (diff) | |
| download | linux-858259cf7d1c443c836a2022b78cb281f0a9b95e.tar.xz linux-858259cf7d1c443c836a2022b78cb281f0a9b95e.zip | |
[PATCH] uml: maintain own LDT entries
Patch imlements full LDT handling in SKAS:
* UML holds it's own LDT table, used to deliver data on
modify_ldt(READ)
* UML disables the default_ldt, inherited from the host (SKAS3)
or resets LDT entries, set by host's clib and inherited in
SKAS0
* A new global variable skas_needs_stub is inserted, that
can be used to decide, whether stub-pages must be supported
or not.
* Uses the syscall-stub to replace missing PTRACE_LDT (therefore,
write_ldt_entry needs to be modified)
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/scripts')
| -rw-r--r-- | arch/um/scripts/Makefile.rules | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/um/scripts/Makefile.rules b/arch/um/scripts/Makefile.rules index 651d9d88b656..b3fbf125709b 100644 --- a/arch/um/scripts/Makefile.rules +++ b/arch/um/scripts/Makefile.rules @@ -26,8 +26,13 @@ define unprofile $(patsubst -pg,,$(patsubst -fprofile-arcs -ftest-coverage,,$(1))) endef +# cmd_make_link checks to see if the $(foo-dir) variable starts with a /. If +# so, it's considered to be a path relative to $(srcdir) rather than +# $(srcdir)/arch/$(SUBARCH). This is because x86_64 wants to get ldt.c from +# arch/um/sys-i386 rather than arch/i386 like the other borrowed files. So, +# it sets $(ldt.c-dir) to /arch/um/sys-i386. quiet_cmd_make_link = SYMLINK $@ -cmd_make_link = ln -sf $(srctree)/arch/$(SUBARCH)/$($(notdir $@)-dir)/$(notdir $@) $@ +cmd_make_link = rm -f $@; ln -sf $(srctree)$(if $(filter-out /%,$($(notdir $@)-dir)),/arch/$(SUBARCH))/$($(notdir $@)-dir)/$(notdir $@) $@ # this needs to be before the foreach, because targets does not accept # complete paths like $(obj)/$(f). To make sure this works, use a := assignment |