Messages in this thread | | | From | Xie Yisheng <> | Subject | [RFC PATCH v2 0/2] arm64/hugetlb: enable gigantic page | Date | Mon, 22 Aug 2016 10:56:41 +0800 |
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Arm64 supports different size of gigantic page which can be seen from: commit 084bd29810a5 ("ARM64: mm: HugeTLB support.") commit 66b3923a1a0f ("arm64: hugetlb: add support for PTE contiguous bit")
So I tried to use this function by adding hugepagesz=1G in kernel parameters, with CONFIG_CMA=y. However, when I echo xx > \ /sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages it failed with the following info: -bash: echo: write error: Invalid argument
This is a v2 patchset which make gigantic page can be used on arm64, with CONFIG_CMA=y, or other related configs is enable.
You can see the former discussions at: https://lkml.org/lkml/2016/8/18/310 Xie Yisheng (2): mm/hugetlb: Introduce ARCH_HAS_GIGANTIC_PAGE arm64 Kconfig: Select gigantic page
arch/arm64/Kconfig | 1 + arch/s390/Kconfig | 1 + arch/x86/Kconfig | 1 + fs/Kconfig | 4 ++++ mm/hugetlb.c | 2 +- 5 files changed, 8 insertions(+), 1 deletion(-)
-- 1.7.12.4
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