linux-kernel - Re: [PATCH 7/8] RISC-V: Comment on the TLB flush in smp

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Date:   Thu, 30 Aug 2018 07:42:33 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Palmer Dabbelt <palmer@...ive.com>
Cc:     linux-riscv@...ts.infradead.org, daniel.lezcano@...aro.org,
        jason@...edaemon.net, ard.biesheuvel@...aro.org,
        marc.zyngier@....com, catalin.marinas@....com,
        dmitriy@...-tech.org, jeremy.linton@....com,
        linux-kernel@...r.kernel.org, atish.patra@....com,
        aou@...s.berkeley.edu, Greg KH <gregkh@...uxfoundation.org>,
        tglx@...utronix.de
Subject: Re: [PATCH 7/8] RISC-V: Comment on the TLB flush in smp_callin()

>  	notify_cpu_starting(smp_processor_id());
>  	set_cpu_online(smp_processor_id(), 1);
> +	/* Remote TLB flushes are ignored while the CPU is offline, so emit a local
> +	 * TLB flush right now just in case. */

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