The commit 351336929ccf222ae38ff0cb7a8dd5fd5c6236a0 which can be seen
Breaks all non-GPL modules that use __vmalloc() or any of the vmap(),
vm_map_ram(), etc functions on MIPS architecture.
All those functions are EXPORT_SYMBOL() so are meant to be allowed to be
used by non-GPL kernel modules. These calls all take page protection as
an argument which is normally a constant like PAGE_KERNEL.
This commit causes all protection constants like PAGE_KERNEL to not be
constants and instead to contain the GPL-only symbol
This means that all calls to __vmalloc(), vmap(), etc, cause non-GPL
modules to fail to link with the complaint that they are trying to use the
GPL-only symbol _page_cachable_default...
I therefore propose that the EXPORT_SYMBOL_GPL(_page_cachable_default) is
changed to EXPORT_SYMBOL(_page_cachable_default) to re-instate the
ability for non-GPL modules to call __vmalloc(), vmap(), vm_map_ram(),
and such like.
Here is a patch that does this. If you approve, please apply it.
Thanks a lot in advance for your consideration.
Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer, http://www.linux-ntfs.org/
[PATCH] Fix __vmalloc(), vmap(), vm_map_ram(), etc on MIPS for non-GPL modules.
Commit 351336929ccf222ae38ff0cb7a8dd5fd5c6236a0 broke these functions for
non-GPL modules by causing the page protection constants not to be
constants any more and instead to include a GPL-only symbol and as these
functions take a page protection argument this causes them to not be
callable from non-GPL modules any more even though the functions are
Signed-off-by: Anton Altaparmakov <firstname.lastname@example.org>
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index be8627b..12af739 100644
@@ -133,7 +133,7 @@ void __update_cache(struct vm_area_struct *vma,
unsigned long _page_cachable_default;
static inline void setup_protection_map(void)