Guo Ren a3c7d6b642 riscv: mm: hugetlb: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP ... Add HVO support for RISC-V; see commit 6be24bed9d ("mm: hugetlb: introduce a new config HUGETLB_PAGE_FREE_VMEMMAP"). This patch is similar to commit 1e63ac088f ("arm64: mm: hugetlb: enable HUGETLB_PAGE_FREE_VMEMMAP for arm64"), and riscv's motivation is the same as arm64. The current riscv was ready to enable HVO after fixup, ref commit d33deda095 ("riscv/mm: hugepage's PG_dcache_clean flag is only set in head page"). See Documentation/mm/vmemmap_dedup.rst for more details. The HugeTLB VmemmapvOptimization (HVO) defaults to off in Kconfig. Here is the riscv test log: cat /proc/sys/vm/hugetlb_optimize_vmemmap echo 8 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages mount -t hugetlbfs none test/ -o pagesize=2048k <Try some simple hugetlb test in test dir, no problem found.> Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org> Link: https://lore.kernel.org/linux-riscv/1F5AF29D-708A-483B-A29F-CAEE6F554866@linux.dev/ Acked-by: Muchun Song <songmuchun@bytedance.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Link: https://lore.kernel.org/r/20230201015259.3222524-1-guoren@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2023-02-21 17:28:12 -08:00
..
boot	RISC-V: kbuild: convert all use of SOC_FOO to ARCH_FOO	2022-12-27 18:01:40 +00:00
configs	RISC-V Patches for the 6.2 Merge Window, Part 1	2022-12-14 15:23:49 -08:00
errata	RISC-V: take text_mutex during alternative patching	2023-02-21 17:21:33 -08:00
include	riscv: Add header include guards to insn.h	2023-02-21 17:22:54 -08:00
kernel	Merge patch series "riscv: Dump faulting instructions in oops handler"	2023-02-21 17:21:51 -08:00
kvm	riscv: KVM: Switch has_svinval() to riscv_has_extension_unlikely()	2023-01-31 23:29:44 -08:00
lib	riscv: Fix Zbb alternative IDs	2023-02-14 16:10:36 -08:00
mm	riscv, mm: Perform BPF exhandler fixup on page fault	2023-02-21 17:21:39 -08:00
net	riscv, bpf: Emit fixed-length instructions for BPF_PSEUDO_FUNC	2022-12-06 20:59:27 +01:00
purgatory	RISC-V: add infrastructure to allow different str* implementations	2023-01-31 11:43:23 -08:00
Kbuild	riscv: move errata/ and kvm/ builds to arch/riscv/Kbuild	2022-06-01 22:26:32 -07:00
Kconfig	riscv: mm: hugetlb: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP	2023-02-21 17:28:12 -08:00
Kconfig.debug	RISC-V: Remove EARLY_PRINTK support	2018-12-17 10:23:46 -08:00
Kconfig.erratas	drivers/perf: riscv_pmu_sbi: add support for PMU variant on T-Head C9xx cores	2022-10-27 14:35:20 -07:00
Kconfig.socs	RISC-V: Kconfig: Remove trailing whitespace	2023-01-24 18:09:12 -08:00
Makefile	Merge patch series "riscv: Optimize function trace"	2023-02-15 10:59:54 -08:00