This adds the Kconfig to enable or disable high-granularity mapping. It is enabled by default for architectures that use ARCH_WANT_GENERAL_HUGETLB. There is also an arch-specific config ARCH_HAS_SPECIAL_HUGETLB_HGM which controls whether or not the architecture has been updated to support HGM if it doesn't use general HugeTLB. Signed-off-by: James Houghton <jthoughton@xxxxxxxxxx> --- fs/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/Kconfig b/fs/Kconfig index 5976eb33535f..d76c7d812656 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -268,6 +268,13 @@ config HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON to enable optimizing vmemmap pages of HugeTLB by default. It can then be disabled on the command line via hugetlb_free_vmemmap=off. +config ARCH_HAS_SPECIAL_HUGETLB_HGM + bool + +config HUGETLB_HIGH_GRANULARITY_MAPPING + def_bool ARCH_WANT_GENERAL_HUGETLB || ARCH_HAS_SPECIAL_HUGETLB_HGM + depends on HUGETLB_PAGE + config MEMFD_CREATE def_bool TMPFS || HUGETLBFS -- 2.37.0.rc0.161.g10f37bed90-goog
