Commit 737c16df authored by Will Deacon's avatar Will Deacon Committed by Catalin Marinas

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: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 4ecf7ccb
...@@ -151,12 +151,6 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next, ...@@ -151,12 +151,6 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
{ {
unsigned int cpu = smp_processor_id(); 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) if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next)
check_and_switch_context(next, tsk); check_and_switch_context(next, tsk);
} }
......
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