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| author | Nicholas Piggin <npiggin@gmail.com> | 2019-09-02 18:29:28 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-09-05 07:22:40 +0300 |
| commit | fd13daea5f72605a0a7386ebedbb5ff2b2a48da4 (patch) | |
| tree | e836591d82fdc331bc4bddbf11d1faba604d3aa7 | |
| parent | 99161de3a283af59f2813da6cbdccc1d2784c7de (diff) | |
| download | linux-fd13daea5f72605a0a7386ebedbb5ff2b2a48da4.tar.xz | |
powerpc/64s: make mmu_partition_table_set_entry TLB flush optional
No functional change.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190902152931.17840-4-npiggin@gmail.com
| -rw-r--r-- | arch/powerpc/include/asm/mmu.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_nested.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/mm/book3s64/hash_utils.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/mm/book3s64/pgtable.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/mm/book3s64/radix_pgtable.c | 2 |
5 files changed, 6 insertions, 6 deletions
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index ba94ce8c22d7..0699cfeeb8c9 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -257,7 +257,7 @@ extern void radix__mmu_cleanup_all(void); /* Functions for creating and updating partition table on POWER9 */ extern void mmu_partition_table_init(void); extern void mmu_partition_table_set_entry(unsigned int lpid, unsigned long dw0, - unsigned long dw1); + unsigned long dw1, bool flush); #endif /* CONFIG_PPC64 */ struct mm_struct; diff --git a/arch/powerpc/kvm/book3s_hv_nested.c b/arch/powerpc/kvm/book3s_hv_nested.c index b3316da2f13e..fff90f2c3de2 100644 --- a/arch/powerpc/kvm/book3s_hv_nested.c +++ b/arch/powerpc/kvm/book3s_hv_nested.c @@ -411,7 +411,7 @@ static void kvmhv_flush_lpid(unsigned int lpid) void kvmhv_set_ptbl_entry(unsigned int lpid, u64 dw0, u64 dw1) { if (!kvmhv_on_pseries()) { - mmu_partition_table_set_entry(lpid, dw0, dw1); + mmu_partition_table_set_entry(lpid, dw0, dw1, true); return; } diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c index 7aed27ea5361..b73d08b54d12 100644 --- a/arch/powerpc/mm/book3s64/hash_utils.c +++ b/arch/powerpc/mm/book3s64/hash_utils.c @@ -825,7 +825,7 @@ static void __init hash_init_partition_table(phys_addr_t hash_table, * For now, UPRT is 0 and we have no segment table. */ htab_size = __ilog2(htab_size) - 18; - mmu_partition_table_set_entry(0, hash_table | htab_size, 0); + mmu_partition_table_set_entry(0, hash_table | htab_size, 0, true); pr_info("Partition table %p\n", partition_tb); } diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c index c2b87c5ba50b..6fab9c0bbbaf 100644 --- a/arch/powerpc/mm/book3s64/pgtable.c +++ b/arch/powerpc/mm/book3s64/pgtable.c @@ -224,7 +224,7 @@ static void flush_partition(unsigned int lpid, bool radix) } void mmu_partition_table_set_entry(unsigned int lpid, unsigned long dw0, - unsigned long dw1) + unsigned long dw1, bool flush) { unsigned long old = be64_to_cpu(partition_tb[lpid].patb0); @@ -251,7 +251,7 @@ void mmu_partition_table_set_entry(unsigned int lpid, unsigned long dw0, uv_register_pate(lpid, dw0, dw1); pr_info("PATE registered by ultravisor: dw0 = 0x%lx, dw1 = 0x%lx\n", dw0, dw1); - } else { + } else if (flush) { flush_partition(lpid, (old & PATB_HR)); } } diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c index 83fa7864e8f4..078a7eeec1f5 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -396,7 +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); + mmu_partition_table_set_entry(0, dw0, dw1, true); asm volatile("ptesync" : : : "memory"); asm volatile(PPC_TLBIE_5(%0,%1,2,1,1) : : |