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

arch/arm/mm/mm-armv.c

+7 −8
Original line number Diff line number Diff line
@@ -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: