From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1C53444D6B9; Fri, 27 Feb 2026 19:30:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772220643; cv=none; b=YsapmyM6kATw+7Td6f1gQG2j+RZ2bSsdZzJFaStsC4PzOPB0+P/7X07ZGJ5U6v8z5fa3ncDdJZmacX04CY/LfBf2lezUY56aGtOud7F4W+l49hXKbrVKSXeb4TaBp7OsMXd36aSnbbZntPNNr14xhAeruMflHZH4pnuHgyFUXds= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772220643; c=relaxed/simple; bh=dDlhIg1ZurYJ03ybCvzQ/8rd/HYYP+ChnQ3pTqezzmk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZUl/PG1GyuBg2YrWZqKZ4uu16wMSgxRmQ9N5d1YloDX0j4VVuBdvTOQHpHxu6sLnZV3G14MJhOdqv56aiFoHzAmwww0ADUjMmK+hWdIM4lXZaqDrR+JUO/ipnX8i8l0nRf+5tkHdoWiOdLYI1RgymRVv0nbZAVAfnFRwqgITlWk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iePS0/Dw; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iePS0/Dw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D45EFC116C6; Fri, 27 Feb 2026 19:30:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772220643; bh=dDlhIg1ZurYJ03ybCvzQ/8rd/HYYP+ChnQ3pTqezzmk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iePS0/Dw97YoKZqjJEs4Khp3/s0IFW65wsVvq2OfyTJ6xyUllIl9bFV+1fLPKEKDq teTsJwPOnCyWZn4tbFNjwwDYriv+idQUZaDkhKRRvY9vQKxAocQZBgNAlqVbJE7NqD ZEdGLjLouJED4PMaSZOuLaHYe0B02FxetIcJpJO06bx4999teuiH33vP14D4yFkcs0 Dn3lUw1JMn4RybxD7zq+g6YY+LhsljbpTe5gcehCCu4fxhF2mMtkdCvdi2rBeaC6qr KSVJ8R2bhUw+ceCxR3MHC70qalNhpe4t4vUnat18jET6g1oA7GELCD8yhrN9VUBzSe bJolX3+iez0ig== Received: from phl-compute-04.internal (phl-compute-04.internal [10.202.2.44]) by mailfauth.phl.internal (Postfix) with ESMTP id 096E4F40069; Fri, 27 Feb 2026 14:30:41 -0500 (EST) Received: from phl-frontend-04 ([10.202.2.163]) by phl-compute-04.internal (MEProxy); Fri, 27 Feb 2026 14:30:41 -0500 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgddvgeelkeegucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujf gurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepfdfmihhrhihl ucfuhhhuthhsvghmrghuucdlofgvthgrmddfuceokhgrsheskhgvrhhnvghlrdhorhhgqe enucggtffrrghtthgvrhhnpefhudejfedvgeekffefvdekheekkeeuveeftdelheegteel gfefveevueekhfdtteenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrih hlfhhrohhmpehkihhrihhllhdomhgvshhmthhprghuthhhphgvrhhsohhnrghlihhthidq udeiudduiedvieehhedqvdekgeeggeejvdekqdhkrghspeepkhgvrhhnvghlrdhorhhgse hshhhuthgvmhhovhdrnhgrmhgvpdhnsggprhgtphhtthhopedvkedpmhhouggvpehsmhht phhouhhtpdhrtghpthhtoheprghkphhmsehlihhnuhigqdhfohhunhgurghtihhonhdroh hrghdprhgtphhtthhopehmuhgthhhunhdrshhonhhgsehlihhnuhigrdguvghvpdhrtghp thhtohepuggrvhhiugesrhgvughhrghtrdgtohhmpdhrtghpthhtohepfihilhhlhiesih hnfhhrrgguvggrugdrohhrghdprhgtphhtthhopehushgrmhgrrghrihhfieegvdesghhm rghilhdrtghomhdprhgtphhtthhopehfvhgulhesghhoohhglhgvrdgtohhmpdhrtghpth htohepohhsrghlvhgrughorhesshhushgvrdguvgdprhgtphhtthhopehrphhptheskhgv rhhnvghlrdhorhhgpdhrtghpthhtohepvhgsrggskhgrsehsuhhsvgdrtgii X-ME-Proxy: Feedback-ID: i10464835:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 27 Feb 2026 14:30:40 -0500 (EST) From: "Kiryl Shutsemau (Meta)" To: Andrew Morton , Muchun Song , David Hildenbrand , Matthew Wilcox , Usama Arif , Frank van der Linden Cc: Oscar Salvador , Mike Rapoport , Vlastimil Babka , Lorenzo Stoakes , Zi Yan , Baoquan He , Michal Hocko , Johannes Weiner , Jonathan Corbet , Huacai Chen , WANG Xuerui , Palmer Dabbelt , Paul Walmsley , Albert Ou , Alexandre Ghiti , kernel-team@meta.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, Kiryl Shutsemau Subject: [PATCHv7 06/18] LoongArch/mm: Align vmemmap to maximal folio size Date: Fri, 27 Feb 2026 19:30:07 +0000 Message-ID: <20260227193030.272078-6-kas@kernel.org> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20260202155634.650837-1-kas@kernel.org> References: <20260202155634.650837-1-kas@kernel.org> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Kiryl Shutsemau The upcoming change to the HugeTLB vmemmap optimization (HVO) requires struct pages of the head page to be naturally aligned with regard to the folio size. Align vmemmap to MAX_FOLIO_VMEMMAP_ALIGN. Signed-off-by: Kiryl Shutsemau --- arch/loongarch/include/asm/pgtable.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/loongarch/include/asm/pgtable.h b/arch/loongarch/include/asm/pgtable.h index c33b3bcb733e..ea6c09eed2e7 100644 --- a/arch/loongarch/include/asm/pgtable.h +++ b/arch/loongarch/include/asm/pgtable.h @@ -113,7 +113,8 @@ extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]; min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits) / 2) - PMD_SIZE - VMEMMAP_SIZE - KFENCE_AREA_SIZE) #endif -#define vmemmap ((struct page *)((VMALLOC_END + PMD_SIZE) & PMD_MASK)) +#define VMEMMAP_ALIGN max(PMD_SIZE, MAX_FOLIO_VMEMMAP_ALIGN) +#define vmemmap ((struct page *)(ALIGN(VMALLOC_END, VMEMMAP_ALIGN))) #define VMEMMAP_END ((unsigned long)vmemmap + VMEMMAP_SIZE - 1) #define KFENCE_AREA_START (VMEMMAP_END + 1) -- 2.51.2