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ARM: 6944/1: mm: allow ASID 0 to be allocated to tasks 

Now that ASID 0 is no longer used as a reserved value, allow it to be
allocated to tasks.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Will Deacon 2011-05-26 11:24:25 +01:00 committed by Russell King
parent 52af9c6cd8
commit 45b95235b0
1 changed files with 3 additions and 3 deletions
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6
arch/arm/mm/context.c
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@ -94,7 +94,7 @@ static void reset_context(void *info)
return;
smp_rmb();
asid = cpu_last_asid + cpu + 1;
asid = cpu_last_asid + cpu;
flush_context();
set_mm_context(mm, asid);
@ -144,13 +144,13 @@ void __new_context(struct mm_struct *mm)
* to start a new version and flush the TLB.
*/
if (unlikely((asid & ~ASID_MASK) == 0)) {
asid = cpu_last_asid + smp_processor_id() + 1;
asid = cpu_last_asid + smp_processor_id();
flush_context();
#ifdef CONFIG_SMP
smp_wmb();
smp_call_function(reset_context, NULL, 1);
#endif
cpu_last_asid += NR_CPUS;
cpu_last_asid += NR_CPUS - 1;
}
set_mm_context(mm, asid);