From 87f34986de0b3799efb1a5eaaa9baa790047f839 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Thu, 15 Oct 2020 20:04:56 -0700 Subject: mm/debug_vm_pgtable/thp: use page table depost/withdraw with THP Architectures like ppc64 use deposited page table while updating the huge pte entries. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Andrew Morton Reviewed-by: Anshuman Khandual Cc: Christophe Leroy Cc: Michael Ellerman Link: https://lkml.kernel.org/r/20200902114222.181353-11-aneesh.kumar@linux.ibm.com Signed-off-by: Linus Torvalds --- mm/debug_vm_pgtable.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'mm/debug_vm_pgtable.c') diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c index d9f00ee07c62..cbf6e0019f62 100644 --- a/mm/debug_vm_pgtable.c +++ b/mm/debug_vm_pgtable.c @@ -154,7 +154,7 @@ static void __init pmd_basic_tests(unsigned long pfn, pgprot_t prot) static void __init pmd_advanced_tests(struct mm_struct *mm, struct vm_area_struct *vma, pmd_t *pmdp, unsigned long pfn, unsigned long vaddr, - pgprot_t prot) + pgprot_t prot, pgtable_t pgtable) { pmd_t pmd = pfn_pmd(pfn, prot); @@ -165,6 +165,8 @@ static void __init pmd_advanced_tests(struct mm_struct *mm, /* Align the address wrt HPAGE_PMD_SIZE */ vaddr = (vaddr & HPAGE_PMD_MASK) + HPAGE_PMD_SIZE; + pgtable_trans_huge_deposit(mm, pmdp, pgtable); + pmd = pfn_pmd(pfn, prot); set_pmd_at(mm, vaddr, pmdp, pmd); pmdp_set_wrprotect(mm, vaddr, pmdp); @@ -193,6 +195,8 @@ static void __init pmd_advanced_tests(struct mm_struct *mm, pmdp_test_and_clear_young(vma, vaddr, pmdp); pmd = READ_ONCE(*pmdp); WARN_ON(pmd_young(pmd)); + + pgtable = pgtable_trans_huge_withdraw(mm, pmdp); } static void __init pmd_leaf_tests(unsigned long pfn, pgprot_t prot) @@ -369,7 +373,7 @@ static void __init pud_basic_tests(unsigned long pfn, pgprot_t prot) { } static void __init pmd_advanced_tests(struct mm_struct *mm, struct vm_area_struct *vma, pmd_t *pmdp, unsigned long pfn, unsigned long vaddr, - pgprot_t prot) + pgprot_t prot, pgtable_t pgtable) { } static void __init pud_advanced_tests(struct mm_struct *mm, @@ -1046,7 +1050,7 @@ static int __init debug_vm_pgtable(void) ptl = pmd_lock(mm, pmdp); pmd_clear_tests(mm, pmdp); - pmd_advanced_tests(mm, vma, pmdp, pmd_aligned, vaddr, prot); + pmd_advanced_tests(mm, vma, pmdp, pmd_aligned, vaddr, prot, saved_ptep); pmd_huge_tests(pmdp, pmd_aligned, prot); pmd_populate_tests(mm, pmdp, saved_ptep); spin_unlock(ptl); -- cgit v1.2.3