Commit 30b26757 authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Will Deacon
Browse files

arm64: mm: remove unused __cpu_uses_extended_idmap[_level()] 



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: default avatarArd Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20210310171515.416643-3-ardb@kernel.org


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 7ba8f2b2

arch/arm64/include/asm/mmu_context.h

+0 −14
Original line number Diff line number Diff line
@@ -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.

 */