From: "Alexei Starovoitov" <alexei.starovoitov@gmail.com>
To: "Yazhou Tang" <tangyazhou@zju.edu.cn>,
"Eduard Zingerman" <eddyz87@gmail.com>, <bpf@vger.kernel.org>,
<ast@kernel.org>, <andrii@kernel.org>
Cc: <daniel@iogearbox.net>, <martin.lau@linux.dev>,
<kernel-team@fb.com>, <yonghong.song@linux.dev>,
<shung-hsi.yu@suse.com>, <paul.chaignon@gmail.com>,
<harishankar.vishwanathan@gmail.com>,
"Shenghao Yuan" <shenghaoyuan0928@163.com>,
"Tianci Cao" <ziye@zju.edu.cn>
Subject: Re: [PATCH RFC bpf-next 0/4] bpf: replace min/max fields with struct cnum{32,64}
Date: Wed, 22 Apr 2026 08:03:07 -0700 [thread overview]
Message-ID: <DHZRWV9NZOPX.1PD401F76IUT9@gmail.com> (raw)
In-Reply-To: <9d47111a-61c8-491b-8750-63fb79968125@zju.edu.cn>
On Wed Apr 22, 2026 at 7:50 AM PDT, Yazhou Tang wrote:
> This was built for potential integration into Solana BPF and is
we were thinking about adding these insns as well
uhmul64_imm dst = ((u128)dst * (u128)imm)>>64 0x77 BPF_PQR BPF_UHMUL | BPF_K v2
uhmul64_reg dst = ((u128)dst * (u128)src)>>64 0x7f BPF_PQR BPF_UHMUL | BPF_X v2
shmul64_imm dst = ((i128)dst * (i128)imm)>>64 0x87 BPF_PQR BPF_SHMUL | BPF_K v2
shmul64_reg dst = ((i128)dst * (i128)src)>>64 0x8f BPF_PQR BPF_SHMUL | BPF_X v2
if you have kernel patches for that please share.
next prev parent reply other threads:[~2026-04-22 15:03 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-21 10:28 [PATCH RFC bpf-next 0/4] bpf: replace min/max fields with struct cnum{32,64} Eduard Zingerman
2026-04-21 10:28 ` [PATCH RFC bpf-next 1/4] bpf: representation and basic operations on circular numbers Eduard Zingerman
2026-04-21 11:16 ` bot+bpf-ci
2026-04-21 17:18 ` sashiko-bot
2026-04-21 17:45 ` Eduard Zingerman
2026-04-23 22:51 ` Eduard Zingerman
2026-04-21 10:28 ` [PATCH RFC bpf-next 2/4] bpf: use accessor functions for bpf_reg_state min/max fields Eduard Zingerman
2026-04-21 10:28 ` [PATCH RFC bpf-next 3/4] bpf: replace min/max fields with struct cnum{32,64} Eduard Zingerman
2026-04-21 11:16 ` bot+bpf-ci
2026-04-21 16:23 ` Alexei Starovoitov
2026-04-21 16:48 ` Eduard Zingerman
2026-04-21 17:16 ` Alexei Starovoitov
2026-04-21 17:20 ` Eduard Zingerman
2026-04-21 18:06 ` sashiko-bot
2026-04-21 18:31 ` Eduard Zingerman
2026-04-21 10:28 ` [PATCH RFC bpf-next 4/4] selftests/bpf: new cases handled by 32->64 range refinements Eduard Zingerman
2026-04-21 16:10 ` [PATCH RFC bpf-next 0/4] bpf: replace min/max fields with struct cnum{32,64} Alexei Starovoitov
2026-04-21 16:33 ` Eduard Zingerman
2026-04-21 17:14 ` Alexei Starovoitov
2026-04-21 23:45 ` Eduard Zingerman
2026-04-22 14:50 ` Yazhou Tang
2026-04-22 15:03 ` Alexei Starovoitov [this message]
2026-04-22 15:32 ` Yazhou Tang
2026-04-22 16:13 ` Alexei Starovoitov
2026-04-23 11:23 ` shenghao yuan
2026-04-22 19:05 ` Eduard Zingerman
2026-04-23 11:45 ` shenghao yuan
2026-04-23 14:18 ` Yazhou Tang
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