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Wed, 12 Aug 2020 06:34:34 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.85.71.109]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 12 Aug 2020 06:34:34 +0000 (GMT) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org Cc: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, Anshuman Khandual , "Aneesh Kumar K.V" Subject: [PATCH 07/16] debug_vm_pgtable/THP: Mark the pte entry huge before using set_pud_at Date: Wed, 12 Aug 2020 12:03:49 +0530 Message-Id: <20200812063358.369514-7-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200812063358.369514-1-aneesh.kumar@linux.ibm.com> References: <20200812063358.369514-1-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=2020-08-11_19:2020-08-11,2020-08-11 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 spamscore=0 priorityscore=1501 mlxscore=0 impostorscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 adultscore=0 phishscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008120044 X-Rspamd-Queue-Id: 7313C16A4AD X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: kernel expect entries to be marked huge before we use set_pud_at(). Signed-off-by: Aneesh Kumar K.V --- mm/debug_vm_pgtable.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c index b6aca2526e01..cd609a212dd4 100644 --- a/mm/debug_vm_pgtable.c +++ b/mm/debug_vm_pgtable.c @@ -265,7 +265,7 @@ static void __init pud_advanced_tests(struct mm_struc= t *mm, unsigned long pfn, unsigned long vaddr, pgprot_t prot) { - pud_t pud =3D pfn_pud(pfn, prot); + pud_t pud; =20 if (!has_transparent_hugepage()) return; @@ -274,25 +274,28 @@ static void __init pud_advanced_tests(struct mm_str= uct *mm, /* Align the address wrt HPAGE_PUD_SIZE */ vaddr =3D (vaddr & HPAGE_PUD_MASK) + HPAGE_PUD_SIZE; =20 + pud =3D pud_mkhuge(pfn_pud(pfn, prot)); set_pud_at(mm, vaddr, pudp, pud); pudp_set_wrprotect(mm, vaddr, pudp); pud =3D READ_ONCE(*pudp); WARN_ON(pud_write(pud)); =20 #ifndef __PAGETABLE_PMD_FOLDED - pud =3D pfn_pud(pfn, prot); + + pud =3D pud_mkhuge(pfn_pud(pfn, prot)); set_pud_at(mm, vaddr, pudp, pud); pudp_huge_get_and_clear(mm, vaddr, pudp); pud =3D READ_ONCE(*pudp); WARN_ON(!pud_none(pud)); =20 - pud =3D pfn_pud(pfn, prot); + pud =3D pud_mkhuge(pfn_pud(pfn, prot)); set_pud_at(mm, vaddr, pudp, pud); pudp_huge_get_and_clear_full(mm, vaddr, pudp, 1); pud =3D READ_ONCE(*pudp); WARN_ON(!pud_none(pud)); #endif /* __PAGETABLE_PMD_FOLDED */ - pud =3D pfn_pud(pfn, prot); + + pud =3D pud_mkhuge(pfn_pud(pfn, prot)); pud =3D pud_wrprotect(pud); pud =3D pud_mkclean(pud); set_pud_at(mm, vaddr, pudp, pud); --=20 2.26.2