| Message ID | 20200902114601.183715-1-aneesh.kumar@linux.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | None | expand |
On 09/02/2020 05:16 PM, Aneesh Kumar K.V wrote: > pte_clear_tests operate on an existing pte entry. Make sure that > is not a none pte entry. > > Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> > --- > mm/debug_vm_pgtable.c | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c > index 9afa1354326b..c36530c69e33 100644 > --- a/mm/debug_vm_pgtable.c > +++ b/mm/debug_vm_pgtable.c > @@ -542,9 +542,10 @@ static void __init pgd_populate_tests(struct mm_struct *mm, pgd_t *pgdp, > #endif /* PAGETABLE_P4D_FOLDED */ > > static void __init pte_clear_tests(struct mm_struct *mm, pte_t *ptep, > - unsigned long vaddr) > + unsigned long pfn, unsigned long vaddr, > + pgprot_t prot) > { > - pte_t pte = ptep_get(ptep); > + pte_t pte = pfn_pte(pfn, prot); > > pr_debug("Validating PTE clear\n"); > pte = __pte(pte_val(pte) | RANDOM_ORVALUE); > @@ -1049,7 +1050,7 @@ static int __init debug_vm_pgtable(void) > > ptl = pte_lockptr(mm, pmdp); > spin_lock(ptl); > - pte_clear_tests(mm, ptep, vaddr); > + pte_clear_tests(mm, ptep, pte_aligned, vaddr, prot); > pte_advanced_tests(mm, vma, ptep, pte_aligned, vaddr, prot); > pte_unmap_unlock(ptep, ptl); > > Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c index 9afa1354326b..c36530c69e33 100644 --- a/mm/debug_vm_pgtable.c +++ b/mm/debug_vm_pgtable.c @@ -542,9 +542,10 @@ static void __init pgd_populate_tests(struct mm_struct *mm, pgd_t *pgdp, #endif /* PAGETABLE_P4D_FOLDED */ static void __init pte_clear_tests(struct mm_struct *mm, pte_t *ptep, - unsigned long vaddr) + unsigned long pfn, unsigned long vaddr, + pgprot_t prot) { - pte_t pte = ptep_get(ptep); + pte_t pte = pfn_pte(pfn, prot); pr_debug("Validating PTE clear\n"); pte = __pte(pte_val(pte) | RANDOM_ORVALUE); @@ -1049,7 +1050,7 @@ static int __init debug_vm_pgtable(void) ptl = pte_lockptr(mm, pmdp); spin_lock(ptl); - pte_clear_tests(mm, ptep, vaddr); + pte_clear_tests(mm, ptep, pte_aligned, vaddr, prot); pte_advanced_tests(mm, vma, ptep, pte_aligned, vaddr, prot); pte_unmap_unlock(ptep, ptl);
pte_clear_tests operate on an existing pte entry. Make sure that is not a none pte entry. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> --- mm/debug_vm_pgtable.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)