linux/arch/sparc
Paul Gortmaker a56b072fa3 sparc32: make copy_to/from_user_page() usable from modular code
While copy_to/from_user_page() users are uncommon, there is one in
drivers/staging/lustre/lustre/libcfs/linux/linux-curproc.c which leads
to the following:

ERROR: "sparc32_cachetlb_ops" [drivers/staging/lustre/lustre/libcfs/libcfs.ko] undefined!

during routine allmodconfig build coverage.  The reason this happens
is as follows:

In arch/sparc/include/asm/cacheflush_32.h we have:

 #define flush_cache_page(vma,addr,pfn) \
        sparc32_cachetlb_ops->cache_page(vma, addr)

 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
        do {                                                    \
                flush_cache_page(vma, vaddr, page_to_pfn(page));\
                memcpy(dst, src, len);                          \
        } while (0)
 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
        do {                                                    \
                flush_cache_page(vma, vaddr, page_to_pfn(page));\
                memcpy(dst, src, len);                          \
        } while (0)

However, sparc32_cachetlb_ops isn't exported and hence the error.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-19 19:49:48 -05:00
..
boot
configs
crypto
include sparc: Hook up sched_setattr and sched_getattr syscalls. 2014-01-29 00:45:06 -08:00
kernel sparc: Hook up sched_setattr and sched_getattr syscalls. 2014-01-29 00:45:06 -08:00
lib sparc64: Make PAGE_OFFSET variable. 2013-11-12 15:22:34 -08:00
math-emu
mm sparc32: make copy_to/from_user_page() usable from modular code 2014-02-19 19:49:48 -05:00
net bpf: do not use reciprocal divide 2014-01-15 17:02:08 -08:00
oprofile
power
prom sparc: delete non-required instances of include <linux/init.h> 2014-01-28 23:38:23 -08:00
Kbuild
Kconfig sparc32: fix build failure for arch_jump_label_transform 2014-02-19 19:49:48 -05:00
Kconfig.debug
Makefile