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| author | Nicholas Piggin <npiggin@gmail.com> | 2019-09-02 18:29:30 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-09-05 07:22:41 +0300 |
| commit | 7d805accbec57a151bd0dd305a1109feebdfd4a4 (patch) | |
| tree | 74b29ce6b0e206b947a45f88bd01906b1e201406 /arch/powerpc/mm/book3s64/radix_pgtable.c | |
| parent | 7e71c428a60e2029585be7d7cc22775f442e5b2c (diff) | |
| download | linux-7d805accbec57a151bd0dd305a1109feebdfd4a4.tar.xz | |
powerpc/64s: remove unnecessary translation cache flushes at boot
The various translation structure invalidations performed in early boot
when the MMU is off are not required, because everything is invalidated
immediately before a CPU first enables its MMU (see early_init_mmu
and early_init_mmu_secondary).
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190902152931.17840-6-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/mm/book3s64/radix_pgtable.c')
| -rw-r--r-- | arch/powerpc/mm/book3s64/radix_pgtable.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c index e1e711c4704a..0d1107fb34c1 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -396,13 +396,7 @@ static void __init radix_init_partition_table(void) rts_field = radix__get_tree_size(); dw0 = rts_field | __pa(init_mm.pgd) | RADIX_PGD_INDEX_SIZE | PATB_HR; dw1 = __pa(process_tb) | (PRTB_SIZE_SHIFT - 12) | PATB_GR; - mmu_partition_table_set_entry(0, dw0, dw1, true); - - asm volatile("ptesync" : : : "memory"); - asm volatile(PPC_TLBIE_5(%0,%1,2,1,1) : : - "r" (TLBIEL_INVAL_SET_LPID), "r" (0)); - asm volatile("eieio; tlbsync; ptesync" : : : "memory"); - trace_tlbie(0, 0, TLBIEL_INVAL_SET_LPID, 0, 2, 1, 1); + mmu_partition_table_set_entry(0, dw0, dw1, false); pr_info("Initializing Radix MMU\n"); pr_info("Partition table %p\n", partition_tb); |