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arm64: mm: don't bother invalidating the icache in switch_mm 

We don't support software broadcast of cache maintenance operations, so
this flush is not required (__sync_icache_dcache will always affect all
CPUs).

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
hifive-unleashed-5.1
Will Deacon 2013-06-05 12:40:34 +01:00 committed by Catalin Marinas
parent 4ecf7ccb19
commit 737c16dffc
1 changed files with 0 additions and 6 deletions
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6
arch/arm64/include/asm/mmu_context.h
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@ -151,12 +151,6 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
{
unsigned int cpu = smp_processor_id();
#ifdef CONFIG_SMP
/* check for possible thread migration */
if (!cpumask_empty(mm_cpumask(next)) &&
!cpumask_test_cpu(cpu, mm_cpumask(next)))
__flush_icache_all();
#endif
if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next)
check_and_switch_context(next, tsk);
}