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b=UOq5WGMGF0HNf4rFbWd5tkdmWEP+Pta6b9RgYUSgo9tNsWF1goyuBzjDKYnFQKK/M hszkFI8uSiDY7oWYfDcOAmSeARNOEEOmGvqG6zMpFFAgfLZe7WgmlO37nIvTez/Bx/ AZYp2+iXWISWo+4cVyCHFliShq5BcZpeqxSgS3dYg6kMsOo/LcRGFwhB++dylKH5oJ RmmeL1NMifKlbFX/H+htu+XtO/G3LhRsIUBKoTzdHdDA7T4NWMaFFF1ZvjOq8G+E8M vTkaFeztYKA5y9Z+kVckQxcJj/SHgmaLQMOZYHbFmLOkbj6sDPqL4/GerP0XU5J8WU +zrGyoSnbGsTw== Message-ID: <2a0afa8c-15be-4766-ad3d-494875395b94@kernel.org> Date: Wed, 13 May 2026 17:50:41 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 8/9] mm: replace thp_disabled_by_hw() with pgtable_has_pmd_leaves() To: Luiz Capitulino , linux-kernel@vger.kernel.org, linux-mm@kvack.org, baolin.wang@linux.alibaba.com, ziy@nvidia.com, lance.yang@linux.dev Cc: corbet@lwn.net, tsbogend@alpha.franken.de, maddy@linux.ibm.com, mpe@ellerman.id.au, agordeev@linux.ibm.com, gerald.schaefer@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, x86@kernel.org, dave.hansen@linux.intel.com, djbw@kernel.org, vishal.l.verma@intel.com, dave.jiang@intel.com, akpm@linux-foundation.org, lorenzo.stoakes@oracle.com References: From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: r8uuigs9kacsmmxg44ihz81tyabh67pb X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: DD0DA40014 X-Rspam-User: X-HE-Tag: 1778687449-964398 X-HE-Meta: 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 SwBCYtvD QfMT13DUVbGQXRDjvNBSmbMeQ+pCMUgU5d/+6wxHJShRhgCYHJ4PI3ABf0G74OhTwdwDTsT+CalJ0XKLwONxmrufQ7QimcLfUeEH7H7O92I4a20HJJ1XdbA4uAygAmMf9KlF50IjpRtFsCzsgmwfM7u2mvN3y0bkupLTwXwUzL1YQpLYibb+M/6RAd2u0CBeTndXhI+5++ROsjwy+2JPLubgV91KIvNcKlsbZuPeCemnyrWPXZm2zGPMIpJ4S/T8O6M46Mkqu+3z8eM0IEV8blHr83E1f03A2DR2q+l+sheaRabaUDXRatO1GTs8UT2GOJG2HjmT69EV/dYgBTYbgpAuF711Qs6b1xFNbvJ4s/9r+1qGRUfQd0cLRL5TCohy1YD0xqIesJQrlLk7VHqU22sUWLg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 5/1/26 21:18, Luiz Capitulino wrote: > Despite its name, thp_disabled_by_hw() just checks whether the > architecture supports PMD-sized pages. It returns true when > TRANSPARENT_HUGEPAGE_UNSUPPORTED is set in transparent_hugepage_flags, > this only occurs if the architecture implements arch_has_pmd_leaves() > and that function returns false. > > Since pgtable_has_pmd_leaves() provides the same semantics, use it > instead. > > Reviewed-by: Lance Yang > Reviewed-by: Baolin Wang > Acked-by: Zi Yan > Signed-off-by: Luiz Capitulino > --- Makes sense, and the next patch will actually limit it only to PMD orders. Acked-by: David Hildenbrand (Arm) -- Cheers, David