[PATCH] uml: kludgy compilation fixes for x86-64 subarch modules support
These are some trivial fixes for the x86-64 subarch module support. The only
potential problem is that I have to modify arch/x86_64/kernel/module.c, to
avoid copying the whole of it.
I can't use it verbatim because it depends on a special vmalloc-like area for
modules, which for now (maybe that's to fix, I guess not) UML/x86-64 has not.
I went the easy way and reused the i386 vmalloc()-based allocator.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile
index d7ed2f7..e60c9da 100644
--- a/arch/um/sys-x86_64/Makefile
+++ b/arch/um/sys-x86_64/Makefile
@@ -4,16 +4,20 @@
# Licensed under the GPL
#
+#XXX: why into lib-y?
lib-y = bitops.o bugs.o csum-partial.o delay.o fault.o mem.o memcpy.o \
ptrace.o ptrace_user.o semaphore.o sigcontext.o signal.o \
syscalls.o sysrq.o thunk.o syscall_table.o
+obj-y := ksyms.o
+obj-$(CONFIG_MODULES) += module.o um_module.o
+
USER_OBJS := ptrace_user.o sigcontext.o
include arch/um/scripts/Makefile.rules
SYMLINKS = bitops.c csum-copy.S csum-partial.c csum-wrappers.c memcpy.S \
- semaphore.c thunk.S
+ semaphore.c thunk.S module.c
# this needs to be before the foreach, because clean-files does not accept
# complete paths like $(src)/$f.
@@ -30,6 +34,7 @@
memcpy.S-dir = lib
semaphore.c-dir = kernel
thunk.S-dir = lib
+module.c-dir = kernel
$(SYMLINKS): FORCE
$(call if_changed,make_link)
diff --git a/arch/um/sys-x86_64/ksyms.c b/arch/um/sys-x86_64/ksyms.c
new file mode 100644
index 0000000..8d30fa8
--- /dev/null
+++ b/arch/um/sys-x86_64/ksyms.c
@@ -0,0 +1,23 @@
+#include "linux/module.h"
+#include "linux/in6.h"
+#include "linux/rwsem.h"
+#include "asm/byteorder.h"
+#include "asm/semaphore.h"
+#include "asm/uaccess.h"
+#include "asm/checksum.h"
+#include "asm/errno.h"
+
+EXPORT_SYMBOL(__down_failed);
+EXPORT_SYMBOL(__down_failed_interruptible);
+EXPORT_SYMBOL(__down_failed_trylock);
+EXPORT_SYMBOL(__up_wakeup);
+
+/*XXX: we need them because they would be exported by x86_64 */
+EXPORT_SYMBOL(__memcpy);
+EXPORT_SYMBOL(strcmp);
+EXPORT_SYMBOL(strcat);
+EXPORT_SYMBOL(strcpy);
+
+/* Networking helper routines. */
+/*EXPORT_SYMBOL(csum_partial_copy_from);
+EXPORT_SYMBOL(csum_partial_copy_to);*/
diff --git a/arch/um/sys-x86_64/um_module.c b/arch/um/sys-x86_64/um_module.c
new file mode 100644
index 0000000..8b8eff1
--- /dev/null
+++ b/arch/um/sys-x86_64/um_module.c
@@ -0,0 +1,19 @@
+#include <linux/vmalloc.h>
+#include <linux/moduleloader.h>
+
+/*Copied from i386 arch/i386/kernel/module.c */
+void *module_alloc(unsigned long size)
+{
+ if (size == 0)
+ return NULL;
+ return vmalloc_exec(size);
+}
+
+/* Free memory returned from module_alloc */
+void module_free(struct module *mod, void *module_region)
+{
+ vfree(module_region);
+ /* FIXME: If module_region == mod->init_region, trim exception
+ table entries. */
+}
+