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xtensa: mmu: Avoid unnecessary mapping

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When duplicating a page table, we don't need to copy
the mapping to the kernel l1 page table virtual address.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This commit is contained in:
Flavio Ceolin 2024-04-24 11:13:22 -07:00 committed by Johan Hedberg
parent 4104012123
commit d8635905e9
1 changed files with 2 additions and 1 deletions
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3
arch/xtensa/core/ptables.c
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@ -737,7 +737,8 @@ static uint32_t *dup_table(uint32_t *source_table)
for (i = 0; i < XTENSA_L1_PAGE_TABLE_ENTRIES; i++) {
uint32_t *l2_table, *src_l2_table;
if (is_pte_illegal(source_table[i])) {
if (is_pte_illegal(source_table[i]) ||
(i == XTENSA_MMU_L1_POS(XTENSA_MMU_PTEVADDR))) {
dst_table[i] = XTENSA_MMU_PTE_ILLEGAL;
continue;
}