The patch titled
Subject: mm/debug_vm_pgtable/hugetlb: disable hugetlb test on ppc64
has been added to the -mm tree. Its filename is
mm-debug_vm_pgtable-hugetlb-disable-hugetlb-test-on-ppc64.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-debug_vm_pgtable-hugetlb-disable-hugetlb-test-on-ppc64.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-debug_vm_pgtable-hugetlb-disable-hugetlb-test-on-ppc64.patch
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------------------------------------------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Subject: mm/debug_vm_pgtable/hugetlb: disable hugetlb test on ppc64
The seems to be missing quite a lot of details w.r.t allocating the
correct pgtable_t page (huge_pte_alloc()), holding the right lock
(huge_pte_lock()) etc. The vma used is also not a hugetlb VMA.
ppc64 do have runtime checks within CONFIG_DEBUG_VM for most of these.
Hence disable the test on ppc64.
Link: https://lkml.kernel.org/r/20200902114222.181353-13-aneesh.kumar@xxxxxxxxxxxxx
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/debug_vm_pgtable.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/mm/debug_vm_pgtable.c~mm-debug_vm_pgtable-hugetlb-disable-hugetlb-test-on-ppc64
+++ a/mm/debug_vm_pgtable.c
@@ -811,6 +811,7 @@ static void __init hugetlb_basic_tests(u
#endif /* CONFIG_ARCH_WANT_GENERAL_HUGETLB */
}
+#ifndef CONFIG_PPC_BOOK3S_64
static void __init hugetlb_advanced_tests(struct mm_struct *mm,
struct vm_area_struct *vma,
pte_t *ptep, unsigned long pfn,
@@ -853,6 +854,7 @@ static void __init hugetlb_advanced_test
pte = huge_ptep_get(ptep);
WARN_ON(!(huge_pte_write(pte) && huge_pte_dirty(pte)));
}
+#endif
#else /* !CONFIG_HUGETLB_PAGE */
static void __init hugetlb_basic_tests(unsigned long pfn, pgprot_t prot) { }
static void __init hugetlb_advanced_tests(struct mm_struct *mm,
@@ -1065,7 +1067,9 @@ static int __init debug_vm_pgtable(void)
pud_populate_tests(mm, pudp, saved_pmdp);
spin_unlock(ptl);
+#ifndef CONFIG_PPC_BOOK3S_64
hugetlb_advanced_tests(mm, vma, ptep, pte_aligned, vaddr, prot);
+#endif
spin_lock(&mm->page_table_lock);
p4d_clear_tests(mm, p4dp);
_
Patches currently in -mm which might be from aneesh.kumar@xxxxxxxxxxxxx are
powerpc-mm-add-debug_vm-warn-for-pmd_clear.patch
powerpc-mm-move-setting-pte-specific-flags-to-pfn_pte.patch
mm-debug_vm_pgtable-ppc64-avoid-setting-top-bits-in-radom-value.patch
mm-debug_vm_pgtables-hugevmap-use-the-arch-helper-to-identify-huge-vmap-support.patch
mm-debug_vm_pgtable-savedwrite-enable-savedwrite-test-with-config_numa_balancing.patch
mm-debug_vm_pgtable-thp-mark-the-pte-entry-huge-before-using-set_pmd-pud_at.patch
mm-debug_vm_pgtable-set_pte-pmd-pud-dont-use-set__at-to-update-an-existing-pte-entry.patch
mm-debug_vm_pgtable-locks-move-non-page-table-modifying-test-together.patch
mm-debug_vm_pgtable-locks-take-correct-page-table-lock.patch
mm-debug_vm_pgtable-thp-use-page-table-depost-withdraw-with-thp.patch
mm-debug_vm_pgtable-pmd_clear-dont-use-pmd-pud_clear-on-pte-entries.patch
mm-debug_vm_pgtable-hugetlb-disable-hugetlb-test-on-ppc64.patch
mm-debug_vm_pgtable-avoid-none-pte-in-pte_clear_test.patch
