diff options
Diffstat (limited to 'arch/arm/mm/proc-macros.S')
| -rw-r--r-- | arch/arm/mm/proc-macros.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S index b795afd0a2c..f8f777df8d7 100644 --- a/arch/arm/mm/proc-macros.S +++ b/arch/arm/mm/proc-macros.S @@ -109,6 +109,10 @@ * 110x 0 1 0 r/w r/o * 11x0 0 1 0 r/w r/o * 1111 0 1 1 r/w r/w + * + * If !CONFIG_CPU_USE_DOMAINS, the following permissions are changed: + * 110x 1 1 1 r/o r/o + * 11x0 1 1 1 r/o r/o */ .macro armv6_mt_table pfx \pfx\()_mt_table: @@ -148,8 +152,11 @@ tst r1, #L_PTE_USER orrne r3, r3, #PTE_EXT_AP1 +#ifdef CONFIG_CPU_USE_DOMAINS + @ allow kernel read/write access to read-only user pages tstne r3, #PTE_EXT_APX bicne r3, r3, #PTE_EXT_APX | PTE_EXT_AP0 +#endif tst r1, #L_PTE_EXEC orreq r3, r3, #PTE_EXT_XN |