When we enable boot-time page size, some macros are no longer compile-time constants. Where these macros are used as cases in switch statements, the switch statements no longer compile. Let's convert these to if/else blocks, which can handle the runtime values. Signed-off-by: Ryan Roberts <ryan.roberts@xxxxxxx> --- ***NOTE*** Any confused maintainers may want to read the cover note here for context: https://lore.kernel.org/all/20241014105514.3206191-1-ryan.roberts@xxxxxxx/ arch/arm64/kvm/mmu.c | 32 +++++++++++++++----------------- arch/arm64/mm/hugetlbpage.c | 34 +++++++++++----------------------- 2 files changed, 26 insertions(+), 40 deletions(-) diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index a509b63bd4dd5..248a2d7ad6dbb 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -1487,29 +1487,27 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, vma_shift = get_vma_page_shift(vma, hva); } - switch (vma_shift) { #ifndef __PAGETABLE_PMD_FOLDED - case PUD_SHIFT: - if (fault_supports_stage2_huge_mapping(memslot, hva, PUD_SIZE)) - break; - fallthrough; + if (vma_shift == PUD_SHIFT) { + if (!fault_supports_stage2_huge_mapping(memslot, hva, PUD_SIZE)) + vma_shift = PMD_SHIFT; + } #endif - case CONT_PMD_SHIFT: + if (vma_shift == CONT_PMD_SHIFT) { vma_shift = PMD_SHIFT; - fallthrough; - case PMD_SHIFT: - if (fault_supports_stage2_huge_mapping(memslot, hva, PMD_SIZE)) - break; - fallthrough; - case CONT_PTE_SHIFT: + } + if (vma_shift == PMD_SHIFT) { + if (!fault_supports_stage2_huge_mapping(memslot, hva, PMD_SIZE)) + vma_shift = PAGE_SHIFT; + } + if (vma_shift == CONT_PTE_SHIFT) { vma_shift = PAGE_SHIFT; force_pte = true; - fallthrough; - case PAGE_SHIFT: - break; - default: - WARN_ONCE(1, "Unknown vma_shift %d", vma_shift); } + if (vma_shift != PUD_SHIFT && + vma_shift != PMD_SHIFT && + vma_shift != PAGE_SHIFT) + WARN_ONCE(1, "Unknown vma_shift %d", vma_shift); vma_pagesize = 1UL << vma_shift; diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c index 5f1e2103888b7..bc98c20655bba 100644 --- a/arch/arm64/mm/hugetlbpage.c +++ b/arch/arm64/mm/hugetlbpage.c @@ -51,16 +51,12 @@ void __init arm64_hugetlb_cma_reserve(void) static bool __hugetlb_valid_size(unsigned long size) { - switch (size) { #ifndef __PAGETABLE_PMD_FOLDED - case PUD_SIZE: + if (size == PUD_SIZE) return pud_sect_supported(); #endif - case CONT_PMD_SIZE: - case PMD_SIZE: - case CONT_PTE_SIZE: + if (size == CONT_PMD_SIZE || size == PMD_SIZE || size == CONT_PTE_SIZE) return true; - } return false; } @@ -104,24 +100,20 @@ static inline int num_contig_ptes(unsigned long size, size_t *pgsize) *pgsize = size; - switch (size) { #ifndef __PAGETABLE_PMD_FOLDED - case PUD_SIZE: + if (size == PUD_SIZE) { if (pud_sect_supported()) contig_ptes = 1; - break; + } else #endif - case PMD_SIZE: + if (size == PMD_SIZE) { contig_ptes = 1; - break; - case CONT_PMD_SIZE: + } else if (size == CONT_PMD_SIZE) { *pgsize = PMD_SIZE; contig_ptes = CONT_PMDS; - break; - case CONT_PTE_SIZE: + } else if (size == CONT_PTE_SIZE) { *pgsize = PAGE_SIZE; contig_ptes = CONT_PTES; - break; } return contig_ptes; @@ -339,20 +331,16 @@ unsigned long hugetlb_mask_last_page(struct hstate *h) { unsigned long hp_size = huge_page_size(h); - switch (hp_size) { #ifndef __PAGETABLE_PMD_FOLDED - case PUD_SIZE: + if (hp_size == PUD_SIZE) return PGDIR_SIZE - PUD_SIZE; #endif - case CONT_PMD_SIZE: + if (hp_size == CONT_PMD_SIZE) return PUD_SIZE - CONT_PMD_SIZE; - case PMD_SIZE: + if (hp_size == PMD_SIZE) return PUD_SIZE - PMD_SIZE; - case CONT_PTE_SIZE: + if (hp_size == CONT_PTE_SIZE) return PMD_SIZE - CONT_PTE_SIZE; - default: - break; - } return 0UL; } -- 2.43.0
