linux-kernel - Re: [PATCH v2] RISC-V: Implement ASID allocator

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Date:   Tue, 9 Apr 2019 11:02:31 +0800
From:   Guo Ren <guoren@...nel.org>
To:     Anup Patel <Anup.Patel@....com>
Cc:     Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Christoph Hellwig <hch@...radead.org>,
        Atish Patra <Atish.Patra@....com>, Gary Guo <gary@...yguo.net>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH v2] RISC-V: Implement ASID allocator

Hi Anup,

On Thu, Mar 28, 2019 at 06:32:36AM +0000, Anup Patel wrote:
> This patch is tested on QEMU/virt machine and SiFive Unleashed board.
> On QEMU/virt machine, we see 10% (approx) performance improvement with
> SW emulated TLBs provided by QEMU. Unfortunately, ASID bits of SATP CSR
> are not implemented on SiFive Unleashed board so we don't see any change
> in performance.
Can you tell me what is the test case ?

Best Regards
 Guo Ren