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Message-Id: <20220721130419.1904711-1-chenhuacai@loongson.cn>
Date: Thu, 21 Jul 2022 21:04:15 +0800
From: Huacai Chen <chenhuacai@...ngson.cn>
To: Arnd Bergmann <arnd@...db.de>, Huacai Chen <chenhuacai@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
Andy Lutomirski <luto@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>
Cc: loongarch@...ts.linux.dev, linux-arch@...r.kernel.org,
Xuefeng Li <lixuefeng@...ngson.cn>,
Guo Ren <guoren@...nel.org>, Xuerui Wang <kernel@...0n.name>,
Jiaxun Yang <jiaxun.yang@...goat.com>,
Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Huacai Chen <chenhuacai@...ngson.cn>,
Feiyang Chen <chenfeiyang@...ngson.cn>
Subject: [PATCH V5 0/4] mm/sparse-vmemmap: Generalise helpers and enable for LoongArch
This series is in order to enable sparse-vmemmap for LoongArch. But
LoongArch cannot use generic helpers directly because MIPS&LoongArch
need to call pgd_init()/pud_init()/pmd_init() when populating page
tables. So we adjust the prototypes of p?d_init() to make generic
helpers can call them, then enable sparse-vmemmap with generic helpers,
and to be further, generalise vmemmap_populate_hugepages() for ARM64,
X86 and LoongArch.
V1 -> V2:
Split ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP to a separate patch.
V2 -> V3:
1, Change the Signed-off-by order of author and committer;
2, Update commit message about the build error on LoongArch.
V3 -> V4:
Change pmd to pmdp for ARM64 for consistency.
V4 -> V5:
Add a detailed comment for no-fallback in the altmap case.
Huacai Chen and Feiyang Chen(4):
MIPS&LoongArch: Adjust prototypes of p?d_init().
LoongArch: Add sparse memory vmemmap support.
mm/sparse-vmemmap: Generalise vmemmap_populate_hugepages().
LoongArch: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP.
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
Signed-off-by: Feiyang Chen <chenfeiyang@...ngson.cn>
---
arch/arm64/mm/mmu.c | 53 ++++++--------------
arch/loongarch/Kconfig | 2 +
arch/loongarch/include/asm/pgalloc.h | 13 +----
arch/loongarch/include/asm/pgtable.h | 13 +++--
arch/loongarch/include/asm/sparsemem.h | 8 +++
arch/loongarch/kernel/numa.c | 4 +-
arch/loongarch/mm/init.c | 44 +++++++++++++++-
arch/loongarch/mm/pgtable.c | 23 +++++----
arch/mips/include/asm/pgalloc.h | 8 +--
arch/mips/include/asm/pgtable-64.h | 8 +--
arch/mips/kvm/mmu.c | 3 +-
arch/mips/mm/pgtable-32.c | 10 ++--
arch/mips/mm/pgtable-64.c | 18 ++++---
arch/mips/mm/pgtable.c | 2 +-
arch/x86/mm/init_64.c | 92 ++++++++++++----------------------
include/linux/mm.h | 8 +++
include/linux/page-flags.h | 1 +
mm/sparse-vmemmap.c | 64 +++++++++++++++++++++++
18 files changed, 222 insertions(+), 152 deletions(-)
--
2.27.0
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