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Date:   Thu, 22 Aug 2019 10:10:54 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Atish Patra <atish.patra@wdc.com>
Cc:     linux-kernel@vger.kernel.org, Albert Ou <aou@eecs.berkeley.edu>,
        linux-riscv@lists.infradead.org,
        Palmer Dabbelt <palmer@sifive.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Christoph Hellwig <hch@lst.de>, Anup Patel <Anup.Patel@wdc.com>
Subject: Re: [PATCH v4 2/3] RISC-V: Issue a local tlbflush if possible.
Message-ID: <20190822081054.GB17573@lst.de>
References: <20190822075151.24838-1-atish.patra@wdc.com> <20190822075151.24838-3-atish.patra@wdc.com>
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On Thu, Aug 22, 2019 at 12:51:50AM -0700, Atish Patra wrote:
> In RISC-V, tlb flush happens via SBI which is expensive. If the local
> cpu is the only cpu in cpumask, there is no need to invoke a SBI call.
> 
> Just do a local flush and return.
> 
> Signed-off-by: Atish Patra <atish.patra@wdc.com>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>