From: Andrew Jones <ajones@ventanamicro.com>
To: Xiao Wang <xiao.w.wang@intel.com>
Cc: paul.walmsley@sifive.com, palmer@dabbelt.com,
aou@eecs.berkeley.edu, luke.r.nels@gmail.com, xi.wang@gmail.com,
bjorn@kernel.org, ast@kernel.org, daniel@iogearbox.net,
andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com,
song@kernel.org, yonghong.song@linux.dev,
john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com,
haoluo@google.com, jolsa@kernel.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
bpf@vger.kernel.org, pulehui@huawei.com, haicheng.li@intel.com,
conor@kernel.org, ben.dooks@codethink.co.uk
Subject: Re: [PATCH v3] riscv, bpf: Optimize zextw insn with Zba extension
Date: Thu, 16 May 2024 14:38:28 +0200 [thread overview]
Message-ID: <20240516-0ec6ff4ad0e23302003be51a@orel> (raw)
In-Reply-To: <20240516090430.493122-1-xiao.w.wang@intel.com>
On Thu, May 16, 2024 at 05:04:30PM GMT, Xiao Wang wrote:
> The Zba extension provides add.uw insn which can be used to implement
> zext.w with rs2 set as ZERO.
>
> Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
> ---
> v3:
> * Remove the Kconfig dependencies on TOOLCHAIN_HAS_ZBA and
> RISCV_ALTERNATIVE. (Andrew)
> v2:
> * Add Zba description in the Kconfig. (Lehui)
> * Reword the Kconfig help message to make it clearer. (Conor)
> ---
> arch/riscv/Kconfig | 12 ++++++++++++
> arch/riscv/net/bpf_jit.h | 18 ++++++++++++++++++
> 2 files changed, 30 insertions(+)
>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
next prev parent reply other threads:[~2024-05-16 12:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-16 9:04 [PATCH v3] riscv, bpf: Optimize zextw insn with Zba extension Xiao Wang
2024-05-16 12:38 ` Andrew Jones [this message]
2024-05-17 7:24 ` Pu Lehui
2024-05-24 15:10 ` patchwork-bot+netdevbpf
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