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Thu, 27 Aug 2020 08:05:28 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.102.17.9]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 27 Aug 2020 08:05:27 +0000 (GMT) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org Subject: [PATCH v3 08/13] mm/debug_vm_pgtable/thp: Use page table depost/withdraw with THP Date: Thu, 27 Aug 2020 13:34:33 +0530 Message-Id: <20200827080438.315345-9-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200827080438.315345-1-aneesh.kumar@linux.ibm.com> References: <20200827080438.315345-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-08-27_02:2020-08-27, 2020-08-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 impostorscore=0 suspectscore=0 bulkscore=0 mlxscore=0 spamscore=0 phishscore=0 priorityscore=1501 adultscore=0 lowpriorityscore=0 malwarescore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008270057 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200827_040559_289323_57DB1F1A X-CRM114-Status: GOOD ( 19.11 ) X-Spam-Score: -0.8 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.8 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [148.163.156.1 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [148.163.156.1 listed in wl.mailspike.net] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Anshuman Khandual , mpe@ellerman.id.au, "Aneesh Kumar K.V" , x86@kernel.org, Mike Rapoport , Qian Cai , Gerald Schaefer , Christophe Leroy , Vineet Gupta , linux-snps-arc@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Architectures like ppc64 use deposited page table while updating the huge pte entries. Signed-off-by: Aneesh Kumar K.V --- mm/debug_vm_pgtable.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c index f9f6358899a8..0ce5c6a24c5b 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; @@ -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 = pmd_mkhuge(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) @@ -373,7 +377,7 @@ 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, @@ -1015,7 +1019,7 @@ static int __init debug_vm_pgtable(void) pgd_clear_tests(mm, pgdp); pte_advanced_tests(mm, vma, ptep, pte_aligned, vaddr, prot); - pmd_advanced_tests(mm, vma, pmdp, pmd_aligned, vaddr, prot); + pmd_advanced_tests(mm, vma, pmdp, pmd_aligned, vaddr, prot, saved_ptep); pud_advanced_tests(mm, vma, pudp, pud_aligned, vaddr, prot); hugetlb_advanced_tests(mm, vma, ptep, pte_aligned, vaddr, prot);