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| author | Vineet Gupta <vgupta@kernel.org> | 2019-09-14 00:20:01 +0200 |
|---|---|---|
| committer | Vineet Gupta <vgupta@kernel.org> | 2021-08-24 23:25:48 +0200 |
| commit | 89d0d42412a116563c28c763d9c1bdee83b5b6af (patch) | |
| tree | b83d63611782632c2002ae30357cab5eb0343f7d /arch/arc/mm | |
| parent | ARC: mm: non-functional code movement/cleanup (diff) | |
| download | linux-89d0d42412a116563c28c763d9c1bdee83b5b6af.tar.xz linux-89d0d42412a116563c28c763d9c1bdee83b5b6af.zip | |
ARC: mm: move MMU specific bits out of ASID allocator
And while at it, rewrite commentary on ASID allocator
Signed-off-by: Vineet Gupta <vgupta@kernel.org>
Diffstat (limited to 'arch/arc/mm')
| -rw-r--r-- | arch/arc/mm/tlb.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c index 15cbc285b0de..b68d5798327b 100644 --- a/arch/arc/mm/tlb.c +++ b/arch/arc/mm/tlb.c @@ -716,14 +716,11 @@ void arc_mmu_init(void) if (IS_ENABLED(CONFIG_ARC_HAS_PAE40) && !mmu->pae) panic("Hardware doesn't support PAE40\n"); - /* Enable the MMU */ - write_aux_reg(ARC_REG_PID, MMU_ENABLE); + /* Enable the MMU with ASID 0 */ + mmu_setup_asid(NULL, 0); - /* In arc700/smp needed for re-entrant interrupt handling */ -#ifdef CONFIG_ISA_ARCV2 - /* swapper_pg_dir is the pgd for the kernel, used by vmalloc */ - write_aux_reg(ARC_REG_SCRATCH_DATA0, swapper_pg_dir); -#endif + /* cache the pgd pointer in MMU SCRATCH reg (ARCv2 only) */ + mmu_setup_pgd(NULL, swapper_pg_dir); if (pae40_exist_but_not_enab()) write_aux_reg(ARC_REG_TLBPD1HI, 0); |