clear_page() and copy_page() are suitable for use outside of the kernel
address space, so annotate them as position-independent code.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210319100146.1149909-2-qperret@google.com
* Parameters:
* x0 - dest
*/
-SYM_FUNC_START(clear_page)
+SYM_FUNC_START_PI(clear_page)
mrs x1, dczid_el0
and w1, w1, #0xf
mov x2, #4
tst x0, #(PAGE_SIZE - 1)
b.ne 1b
ret
-SYM_FUNC_END(clear_page)
+SYM_FUNC_END_PI(clear_page)
EXPORT_SYMBOL(clear_page)
* x0 - dest
* x1 - src
*/
-SYM_FUNC_START(copy_page)
+SYM_FUNC_START_PI(copy_page)
alternative_if ARM64_HAS_NO_HW_PREFETCH
// Prefetch three cache lines ahead.
prfm pldl1strm, [x1, #128]
stnp x16, x17, [x0, #112 - 256]
ret
-SYM_FUNC_END(copy_page)
+SYM_FUNC_END_PI(copy_page)
EXPORT_SYMBOL(copy_page)