Re: [RFC PATCH 03/14] sparc64: routines for basic mmu shared context structure management

[David Miller]

From: Mike Kravetz <mike.krav...@oracle.com>
Date: Fri, 16 Dec 2016 10:35:26 -0800

> +void smp_flush_shared_tlb_mm(struct mm_struct *mm)
> +{
> +     u32 ctx = SHARED_CTX_HWBITS(mm->context);
> +
> +     (void)get_cpu();                /* prevent preemption */

preempt_disable();

> +
> +     smp_cross_call(&xcall_flush_tlb_mm, ctx, 0, 0);
> +     __flush_tlb_mm(ctx, SECONDARY_CONTEXT);
> +
> +     put_cpu();

preempt_enable();