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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: linux-mm@kvack.org, akpm@linux-foundation.org
Cc: linuxppc-dev@lists.ozlabs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
	Anshuman Khandual <anshuman.khandual@arm.com>
Subject: [PATCH v4 12/13] mm/debug_vm_pgtable/hugetlb: Disable hugetlb test on ppc64
Date: Wed,  2 Sep 2020 17:12:21 +0530
Message-ID: <20200902114222.181353-13-aneesh.kumar@linux.ibm.com> (raw)
In-Reply-To: <20200902114222.181353-1-aneesh.kumar@linux.ibm.com>

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.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
---
 mm/debug_vm_pgtable.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c
index b53903fdee85..9afa1354326b 100644
--- a/mm/debug_vm_pgtable.c
+++ b/mm/debug_vm_pgtable.c
@@ -811,6 +811,7 @@ static void __init hugetlb_basic_tests(unsigned long pfn, pgprot_t prot)
 #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_tests(struct mm_struct *mm,
 	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);
-- 
2.26.2


  parent reply index

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-02 11:42 [PATCH v4 00/13] mm/debug_vm_pgtable fixes Aneesh Kumar K.V
2020-09-02 11:42 ` [PATCH v4 01/13] powerpc/mm: Add DEBUG_VM WARN for pmd_clear Aneesh Kumar K.V
2020-09-02 11:42 ` [PATCH v4 02/13] powerpc/mm: Move setting pte specific flags to pfn_pte Aneesh Kumar K.V
2020-09-02 12:30   ` Christophe Leroy
2020-09-02 11:42 ` [PATCH v4 03/13] mm/debug_vm_pgtable/ppc64: Avoid setting top bits in radom value Aneesh Kumar K.V
2020-09-04  4:03   ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 04/13] mm/debug_vm_pgtables/hugevmap: Use the arch helper to identify huge vmap support Aneesh Kumar K.V
2020-09-02 12:40   ` Christophe Leroy
2020-09-02 12:53     ` Aneesh Kumar K.V
2020-09-04  4:08   ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 05/13] mm/debug_vm_pgtable/savedwrite: Enable savedwrite test with CONFIG_NUMA_BALANCING Aneesh Kumar K.V
2020-09-04  4:09   ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 06/13] mm/debug_vm_pgtable/THP: Mark the pte entry huge before using set_pmd/pud_at Aneesh Kumar K.V
2020-09-04  5:21   ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 07/13] mm/debug_vm_pgtable/set_pte/pmd/pud: Don't use set_*_at to update an existing pte entry Aneesh Kumar K.V
2020-09-04  5:34   ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 08/13] mm/debug_vm_pgtable/locks: Move non page table modifying test together Aneesh Kumar K.V
2020-09-04  3:58   ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 09/13] mm/debug_vm_pgtable/locks: Take correct page table lock Aneesh Kumar K.V
2020-09-04  5:39   ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 10/13] mm/debug_vm_pgtable/thp: Use page table depost/withdraw with THP Aneesh Kumar K.V
2020-09-04  4:21   ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 11/13] mm/debug_vm_pgtable/pmd_clear: Don't use pmd/pud_clear on pte entries Aneesh Kumar K.V
2020-09-04  6:03   ` Anshuman Khandual
2020-09-02 11:42 ` Aneesh Kumar K.V [this message]
2020-09-04  6:19   ` [PATCH v4 12/13] mm/debug_vm_pgtable/hugetlb: Disable hugetlb test on ppc64 Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 13/13] mm/debug_vm_pgtable: Avoid none pte in pte_clear_test Aneesh Kumar K.V
2020-09-11  2:13   ` Nathan Chancellor
2020-09-11  5:21     ` Aneesh Kumar K.V
2020-09-23  3:14       ` Anshuman Khandual
2020-10-11 20:02   ` Guenter Roeck
2020-10-12  4:29     ` Aneesh Kumar K.V
2020-09-02 11:46 ` Aneesh Kumar K.V
2020-09-04  4:16   ` Anshuman Khandual
2020-09-04  6:48 ` [PATCH v4 00/13] mm/debug_vm_pgtable fixes Anshuman Khandual
2020-09-04 15:26   ` Gerald Schaefer
2020-09-04 16:01     ` Gerald Schaefer
2020-09-04 17:53       ` Gerald Schaefer
2020-09-09  8:38         ` Anshuman Khandual
2020-09-08 15:39       ` Gerald Schaefer
2020-09-09  6:08         ` Aneesh Kumar K.V
2020-09-09 11:16           ` Gerald Schaefer
2020-09-09  8:15       ` Anshuman Khandual
2020-09-09 11:10         ` Gerald Schaefer
2020-09-09  8:08     ` Anshuman Khandual
2020-09-09 11:36       ` Gerald Schaefer
2020-09-13 11:03 ` [PATCH] mm/debug_vm_pgtable: Avoid doing memory allocation with pgtable_t mapped Aneesh Kumar K.V
2020-09-13 13:42   ` Matthew Wilcox
2020-10-13 20:58 ` [PATCH v4 00/13] mm/debug_vm_pgtable fixes Andrew Morton
2020-10-14  3:15   ` Aneesh Kumar K.V
2020-10-14 20:36     ` Andrew Morton
2020-10-15  2:59       ` Anshuman Khandual

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