Commit 1a3abcf4 authored by Vitaly Andrianov's avatar Vitaly Andrianov Committed by Russell King

ARM: 7418/1: LPAE: fix access flag setup in mem_type_table

A zero value for prot_sect in the memory types table implies that
section mappings should never be created for the memory type in question.
This is checked for in alloc_init_section().

With LPAE, we set a bit to mask access flag faults for kernel mappings.
This breaks the aforementioned (!prot_sect) check in alloc_init_section().

This patch fixes this bug by first checking for a non-zero
prot_sect before setting the PMD_SECT_AF flag.
Signed-off-by: default avatarVitaly Andrianov <>
Acked-by: default avatarCatalin Marinas <>
Signed-off-by: default avatarRussell King <>
parent 9b61a4d1
......@@ -489,7 +489,8 @@ static void __init build_mem_type_table(void)
for (i = 0; i < ARRAY_SIZE(mem_types); i++) {
mem_types[i].prot_pte |= PTE_EXT_AF;
mem_types[i].prot_sect |= PMD_SECT_AF;
if (mem_types[i].prot_sect)
mem_types[i].prot_sect |= PMD_SECT_AF;
kern_pgprot |= PTE_EXT_AF;
vecs_pgprot |= PTE_EXT_AF;
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