default or selected kernelversion does not have config value CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON.
Result is shown for kernelversion 6.9.9
Default freeing vmemmap pages of HugeTLB to on
configname: CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON
Linux Kernel Configuration
└─>File systems
└─>Pseudo filesystems
└─>Default freeing vmemmap pages of HugeTLB to on
In linux kernel since version 5.14 (release Date: 2021-08-29)
When using HUGETLB_PAGE_FREE_VMEMMAP, the freeing unused vmemmap
pages associated with each HugeTLB page is default off. Say Y here
to enable freeing vmemmap pages of HugeTLB by default. It can then
be disabled on the command line via hugetlb_free_vmemmap=off.
pages associated with each HugeTLB page is default off. Say Y here
to enable freeing vmemmap pages of HugeTLB by default. It can then
be disabled on the command line via hugetlb_free_vmemmap=off.