diff options
Diffstat (limited to 'arch/arm/mm/context.c')
| -rw-r--r-- | arch/arm/mm/context.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index 3ad0fdaa5cc1..52e6f13ac9c7 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -180,6 +180,7 @@ static int is_reserved_asid(u64 asid) static u64 new_context(struct mm_struct *mm, unsigned int cpu) { + static u32 cur_idx = 1; u64 asid = atomic64_read(&mm->context.id); u64 generation = atomic64_read(&asid_generation); @@ -197,7 +198,7 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu) * as we reserve ASID #0 to switch via TTBR0 and indicate * rollover events. */ - asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1); + asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, cur_idx); if (asid == NUM_USER_ASIDS) { generation = atomic64_add_return(ASID_FIRST_VERSION, &asid_generation); @@ -205,6 +206,7 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu) asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1); } __set_bit(asid, asid_map); + cur_idx = asid; asid |= generation; cpumask_clear(mm_cpumask(mm)); } |