[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: Russell King <rmk+kernel@arm.linux.org.uk>
tirimbino
Russell King 20 years ago committed by Russell King
parent 2ea83398b7
commit a343e6075a
  1. 15
      arch/arm/mm/mm-armv.c

@ -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:

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