| Date | Mon, 27 Jun 2022 17:58:50 +0530 | Subject | Re: [RFC PATCH 05/26] hugetlb: add CONFIG_HUGETLB_HIGH_GRANULARITY_MAPPING | From | "manish.mishra" <> |
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On 24/06/22 11:06 pm, James Houghton wrote: > 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@google.com> reviewed-by:manish.mishra@nutanix.com > --- > 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 >
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