diff options
Diffstat (limited to 'arch/arm/mm/pageattr.c')
| -rw-r--r-- | arch/arm/mm/pageattr.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/mm/pageattr.c b/arch/arm/mm/pageattr.c index 5f8071110e88..b7ff7f19b541 100644 --- a/arch/arm/mm/pageattr.c +++ b/arch/arm/mm/pageattr.c @@ -331,6 +331,10 @@ static void __set_pmd_pte(pmd_t *pmd, unsigned long address, pte_t *pte) cpa_debug("__set_pmd_pte %x %x %x\n", pmd, pte, *pte); + /* enforce pte entry stores ordering to avoid pmd writes + * bypassing pte stores. + */ + dsb(); /* change init_mm */ pmd_populate_kernel(&init_mm, pmd, pte); @@ -342,7 +346,10 @@ static void __set_pmd_pte(pmd_t *pmd, unsigned long address, pte_t *pte) pgd_index(address), address); pmd_populate_kernel(NULL, pmd, pte); } - + /* enforce pmd entry stores ordering to avoid tlb flush bypassing + * pmd entry stores. + */ + dsb(); } static int |