[PATCH 2/5] arm64: mm: remove unused __cpu_uses_extended_idmap[_level()]
From: Ard Biesheuvel <ardb@kernel.org>
Date: 2021-03-10 17:16:54
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
These routines lost all existing users during the latest merge window so we can remove them. This avoids the need to fix them in the context of fixing a regression related to the ID map on 52-bit VA kernels. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- arch/arm64/include/asm/mmu_context.h | 14 -------------- 1 file changed, 14 deletions(-)
diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h
index 0f467d550f27..bd02e99b1a4c 100644
--- a/arch/arm64/include/asm/mmu_context.h
+++ b/arch/arm64/include/asm/mmu_context.h@@ -63,20 +63,6 @@ static inline void cpu_switch_mm(pgd_t *pgd, struct mm_struct *mm) extern u64 idmap_t0sz; extern u64 idmap_ptrs_per_pgd; -static inline bool __cpu_uses_extended_idmap(void) -{ - return unlikely(idmap_t0sz != TCR_T0SZ(vabits_actual)); -} - -/* - * True if the extended ID map requires an extra level of translation table - * to be configured. - */ -static inline bool __cpu_uses_extended_idmap_level(void) -{ - return ARM64_HW_PGTABLE_LEVELS(64 - idmap_t0sz) > CONFIG_PGTABLE_LEVELS; -} - /* * Ensure TCR.T0SZ is set to the provided value. */
--
2.30.1
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