[v4,20/27] x86/setup: call hugetlb_bootmem_alloc early

Message ID	20250218181656.207178-21-fvdl@google.com (mailing list archive)
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Headers	show Return-Path: <owner-linux-mm@kvack.org> Date: Tue, 18 Feb 2025 18:16:48 +0000 In-Reply-To: <20250218181656.207178-1-fvdl@google.com> Mime-Version: 1.0 References: <20250218181656.207178-1-fvdl@google.com> Message-ID: <20250218181656.207178-21-fvdl@google.com> Subject: [PATCH v4 20/27] x86/setup: call hugetlb_bootmem_alloc early From: Frank van der Linden <fvdl@google.com> To: akpm@linux-foundation.org, muchun.song@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: yuzhao@google.com, usamaarif642@gmail.com, joao.m.martins@oracle.com, roman.gushchin@linux.dev, Frank van der Linden <fvdl@google.com>, Dave Hansen <dave.hansen@linux.intel.com>, Andy Lutomirski <luto@kernel.org>, Peter Zijlstra <peterz@infradead.org> Content-Type: text/plain; charset="UTF-8" Sender: owner-linux-mm@kvack.org Precedence: bulk
Series	hugetlb/CMA improvements for large systems \| expand [v4,00/27] hugetlb/CMA improvements for large systems [v4,01/27] mm/cma: export total and free number of pages for CMA areas [v4,02/27] mm, cma: support multiple contiguous ranges, if requested [v4,03/27] mm/cma: introduce cma_intersects function [v4,04/27] mm, hugetlb: use cma_declare_contiguous_multi [v4,05/27] mm/hugetlb: remove redundant __ClearPageReserved [v4,06/27] mm/hugetlb: use online nodes for bootmem allocation [v4,07/27] mm/hugetlb: convert cmdline parameters from setup to early [v4,08/27] x86/mm: make register_page_bootmem_memmap handle PTE mappings [v4,09/27] mm/bootmem_info: export register_page_bootmem_memmap [v4,10/27] mm/sparse: allow for alternate vmemmap section init at boot [v4,11/27] mm/hugetlb: set migratetype for bootmem folios [v4,12/27] mm: define __init_reserved_page_zone function [v4,13/27] mm/hugetlb: check bootmem pages for zone intersections [v4,14/27] mm/sparse: add vmemmap_*_hvo functions [v4,15/27] mm/hugetlb: deal with multiple calls to hugetlb_bootmem_alloc [v4,16/27] mm/hugetlb: move huge_boot_pages list init to hugetlb_bootmem_alloc [v4,17/27] mm/hugetlb: add pre-HVO framework [v4,18/27] mm/hugetlb_vmemmap: fix hugetlb_vmemmap_restore_folios definition [v4,19/27] mm/hugetlb: do pre-HVO for bootmem allocated pages [v4,20/27] x86/setup: call hugetlb_bootmem_alloc early [v4,21/27] x86/mm: set ARCH_WANT_SPARSEMEM_VMEMMAP_PREINIT [v4,22/27] mm/cma: simplify zone intersection check [v4,23/27] mm/cma: introduce a cma validate function [v4,24/27] mm/cma: introduce interface for early reservations [v4,25/27] mm/hugetlb: add hugetlb_cma_only cmdline option [v4,26/27] mm/hugetlb: enable bootmem allocation from CMA areas [v4,27/27] mm/hugetlb: move hugetlb CMA code in to its own file

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20250218181656.207178-21-fvdl@google.com (mailing list archive)

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Date: Tue, 18 Feb 2025 18:16:48 +0000
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Subject: [PATCH v4 20/27] x86/setup: call hugetlb_bootmem_alloc early
From: Frank van der Linden <fvdl@google.com>
To: akpm@linux-foundation.org, muchun.song@linux.dev, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Cc: yuzhao@google.com, usamaarif642@gmail.com, joao.m.martins@oracle.com,
	roman.gushchin@linux.dev, Frank van der Linden <fvdl@google.com>,
	Dave Hansen <dave.hansen@linux.intel.com>, Andy Lutomirski <luto@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>
Content-Type: text/plain; charset="UTF-8"
Sender: owner-linux-mm@kvack.org
Precedence: bulk

Series

hugetlb/CMA improvements for large systems | expand

Commit Message

Frank van der Linden Feb. 18, 2025, 6:16 p.m. UTC

Call hugetlb_bootmem_allloc in an earlier spot in setup, after
hugelb_cma_reserve. This will make vmemmap preinit of
the sections covered by the allocated hugetlb pages possible.

Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Frank van der Linden <fvdl@google.com>
---
 arch/x86/kernel/setup.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index cebee310e200..ff8604007b08 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1108,8 +1108,10 @@  void __init setup_arch(char **cmdline_p)
 	initmem_init();
 	dma_contiguous_reserve(max_pfn_mapped << PAGE_SHIFT);
 
-	if (boot_cpu_has(X86_FEATURE_GBPAGES))
+	if (boot_cpu_has(X86_FEATURE_GBPAGES)) {
 		hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
+		hugetlb_bootmem_alloc();
+	}
 
 	/*
 	 * Reserve memory for crash kernel after SRAT is parsed so that it

[v4,20/27] x86/setup: call hugetlb_bootmem_alloc early

Commit Message

Patch