Now that HGM is fully supported for GENERAL_HUGETLB, we can enable it for x86_64. We can only enable it for 64-bit architectures because the vm flag VM_HUGETLB_HGM uses a high bit. The x86 KVM MMU already properly handles HugeTLB HGM pages (it does a page table walk to determine which size to use in the second-stage page table instead of, for example, checking vma_mmu_pagesize, like arm64 does). Signed-off-by: James Houghton <jthoughton@xxxxxxxxxx> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 3604074a878b..fde9ba1dd8d7 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -126,6 +126,7 @@ config X86 select ARCH_WANT_GENERAL_HUGETLB select ARCH_WANT_HUGE_PMD_SHARE select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP if X86_64 + select ARCH_WANT_HUGETLB_HIGH_GRANULARITY_MAPPING if X86_64 select ARCH_WANT_LD_ORPHAN_WARN select ARCH_WANTS_THP_SWAP if X86_64 select ARCH_HAS_PARANOID_L1D_FLUSH -- 2.39.2.637.g21b0678d19-goog
