From: Will Deacon Date: Wed, 5 Jun 2013 11:40:34 +0000 (+0100) Subject: arm64: mm: don't bother invalidating the icache in switch_mm X-Git-Tag: next-20130617~110^2~7 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=737c16dffc458e58ee7840556d43b874cb8e16a0;p=karo-tx-linux.git 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 Signed-off-by: Catalin Marinas --- diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h index e2bc385adb6b..a9eee33dfa62 100644 --- a/arch/arm64/include/asm/mmu_context.h +++ b/arch/arm64/include/asm/mmu_context.h @@ -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); }