| Date | Thu, 5 Jan 2023 10:18:03 +0000 | Subject | [PATCH 05/46] hugetlb: add CONFIG_HUGETLB_HIGH_GRANULARITY_MAPPING | From | James Houghton <> |
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This adds the Kconfig to enable or disable high-granularity mapping. Each architecture must explicitly opt-in to it (via ARCH_WANT_HUGETLB_HIGH_GRANULARITY_MAPPING), but when opted in, HGM will be enabled by default if HUGETLB_PAGE is enabled.
Signed-off-by: James Houghton <jthoughton@google.com> --- fs/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/fs/Kconfig b/fs/Kconfig index 2685a4d0d353..ce2567946016 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -267,6 +267,13 @@ config HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON enable HVO by default. It can be disabled via hugetlb_free_vmemmap=off (boot command line) or hugetlb_optimize_vmemmap (sysctl). +config ARCH_WANT_HUGETLB_HIGH_GRANULARITY_MAPPING + bool + +config HUGETLB_HIGH_GRANULARITY_MAPPING + def_bool HUGETLB_PAGE + depends on ARCH_WANT_HUGETLB_HIGH_GRANULARITY_MAPPING + config MEMFD_CREATE def_bool TMPFS || HUGETLBFS -- 2.39.0.314.g84b9a713c41-goog
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