Commit a343e607 authored by Russell King's avatar Russell King Committed by Russell King

[PATCH] ARM: Move PGD kernel page table initialisation

It doesn't make sense to have the PGD kernel pointers initialisation
separate from the PGD user pointers, especially when we clean the
data cache over the whole range.
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 2ea83398
......@@ -169,7 +169,14 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
memzero(new_pgd, FIRST_KERNEL_PGD_NR * sizeof(pgd_t));
/*
* Copy over the kernel and IO PGD entries
*/
init_pgd = pgd_offset_k(0);
memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR,
(PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t));
clean_dcache_area(new_pgd, PTRS_PER_PGD * sizeof(pgd_t));
if (!vectors_high()) {
/*
......@@ -198,14 +205,6 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
spin_unlock(&mm->page_table_lock);
}
/*
* Copy over the kernel and IO PGD entries
*/
memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR,
(PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t));
clean_dcache_area(new_pgd, PTRS_PER_PGD * sizeof(pgd_t));
return new_pgd;
no_pte:
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment