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

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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>
Link: https://lore.kernel.org/r/20210310171515.416643-3-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Ard Biesheuvel 2021-03-10 18:15:12 +01:00 committed by Will Deacon
parent 7ba8f2b2d6
commit 30b2675761
1 changed files with 0 additions and 14 deletions
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14
arch/arm64/include/asm/mmu_context.h
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@ -63,20 +63,6 @@ static inline void cpu_switch_mm(pgd_t *pgd, struct mm_struct *mm)
extern u64 idmap_t0sz; extern u64 idmap_t0sz;
extern u64 idmap_ptrs_per_pgd; 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. * Ensure TCR.T0SZ is set to the provided value.
*/ */