linux-kernel - Re: [PATCH v2 0/3] RISC-V: Export Zba, Zbb to usermode via hwprobe

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Message-Id: <168721242551.30028.288770602847866224.b4-ty@rivosinc.com>
Date:   Mon, 19 Jun 2023 15:07:05 -0700
From:   Palmer Dabbelt <palmer@...osinc.com>
To:     Evan Green <evan@...osinc.com>
Cc:     Albert Ou <aou@...s.berkeley.edu>,
        Andrew Bresticker <abrestic@...osinc.com>,
        Andrew Jones <ajones@...tanamicro.com>,
        Anup Patel <apatel@...tanamicro.com>,
        Celeste Liu <coelacanthus@...look.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Heiko Stuebner <heiko.stuebner@...ll.eu>,
        Jisheng Zhang <jszhang@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Sunil V L <sunilvl@...tanamicro.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v2 0/3] RISC-V: Export Zba, Zbb to usermode via hwprobe


On Tue, 09 May 2023 11:25:00 -0700, Evan Green wrote:
> This change detects the presence of Zba, Zbb, and Zbs extensions and exports
> them per-hart to userspace via the hwprobe mechanism. Glibc can then use
> these in setting up hwcaps-based library search paths.
> 
> There's a little bit of extra housekeeping here: the first change adds
> Zba and Zbs to the set of extensions the kernel recognizes, and the second
> change starts tracking ISA features per-hart (in addition to the ANDed
> mask of features across all harts which the kernel uses to make
> decisions). Now that we track the ISA information per-hart, we could
> even fix up /proc/cpuinfo to accurately report extension per-hart,
> though I've left that out of this series for now.
> 
> [...]

Applied, thanks!

[1/3] RISC-V: Add Zba, Zbs extension probing
      https://git.kernel.org/palmer/c/c6699baf1064
[2/3] RISC-V: Track ISA extensions per hart
      https://git.kernel.org/palmer/c/82e9c66e81c8
[3/3] RISC-V: hwprobe: Expose Zba, Zbb, and Zbs
      https://git.kernel.org/palmer/c/c0baf321038d

Best regards,
-- 
Palmer Dabbelt <palmer@...osinc.com>